Split K8sHelper, add WorkerProvisioner protocol, and add LinuxWorker … (#2110)

- Closes #2102.
- LinuxWorkerProvisioner sets up a kind-based node.
- Includes some test cleanups.

Co-authored-by: John Logan <john_logan@apple.com>
This commit is contained in:
jshi991
2026-08-18 13:12:06 -07:00
committed by GitHub
co-authored by John Logan
parent 7d4ffb6cb1
commit b3357fdb2e
20 changed files with 1092 additions and 793 deletions
+2 -3
View File
@@ -166,13 +166,12 @@ let package = Package(
]
),
.testTarget(
name: "K8sTests",
name: "K8sPluginTests",
dependencies: [
"ContainerK8s",
"ContainerResource",
"Yams",
],
path: "Tests/K8sPluginTests"
]
),
.target(
name: "ContainerK8s",
+1 -1
View File
@@ -108,7 +108,7 @@ public struct Builder: Sendable {
}
if let terminal = config.terminal {
_ = Task {
Task {
let winchHandler = AsyncSignalHandler.create(notify: [SIGWINCH])
let setWinch = { (rows: UInt16, cols: UInt16) in
var winch = ClientStream()
+37 -97
View File
@@ -75,112 +75,52 @@ public struct K8sCreate: AsyncParsableCommand {
progress.start()
let containerSystemConfig: ContainerSystemConfig = try await ConfigurationLoader.load()
try await K8sHelper.ensureImage(nodeImage: nodeImage, log: log, containerSystemConfig: containerSystemConfig)
let fqdn = K8sHelper.fqdn(for: name, domain: containerSystemConfig.dns.domain)
let dns = Flags.DNS(domain: nil, nameservers: [], options: [], searchDomains: [])
let management = Flags.Management(
arch: Arch.hostArchitecture().rawValue,
capAdd: ["ALL"],
capDrop: [],
cidfile: "",
detach: true,
dns: dns,
dnsDisabled: false,
entrypoint: nil,
initImage: nil,
kernel: nil,
kernelArgs: [],
labels: [
"\(ResourceLabelKeys.plugin)=\(K8sHelper.pluginName)",
"\(ResourceLabelKeys.role)=\(K8sHelper.controlPlaneRoleName)",
],
maskedPaths: [],
mounts: [],
name: name,
networks: [],
os: "linux",
platform: nil,
publishPorts: fqdn == nil ? [try await K8sHelper.clusterPort()] : [],
publishSockets: [],
readOnly: false,
readonlyPaths: [],
let provisioner = try LinuxNodeProvisioner(
clusterName: name,
roles: [StandardRoles.controlPlane, StandardRoles.worker],
nodeImage: nodeImage,
cpus: resourceFlags.cpus,
memory: resourceFlags.memory,
registryScheme: registryFlags.scheme,
maxConcurrentDownloads: imageFetchFlags.maxConcurrentDownloads,
remove: remove,
rosetta: true,
runtime: nil,
ssh: false,
shmSize: nil,
tmpFs: [],
useInit: false,
virtualization: false,
volumes: []
)
let updatedResource = K8sHelper.defaultedResourceFlags(resourceFlags)
let processFlags = Flags.Process(cwd: nil, env: K8sHelper.nodeProxyEnv(), envFile: [], gid: nil, interactive: false, tty: false, uid: nil, ulimits: [], user: nil)
var (config, kernel, initfs) = try await Utility.containerConfigFromFlags(
id: name,
image: nodeImage,
arguments: [],
process: processFlags,
management: management,
resource: updatedResource,
registry: registryFlags,
imageFetch: imageFetchFlags,
containerSystemConfig: containerSystemConfig,
progressUpdate: progress.handler,
log: log
)
// Allow the node to modify /proc/sys (e.g. net.ipv4.ip_forward) during setup.
config.maskedPaths = []
config.readonlyPaths = []
let client = ContainerClient()
let options = ContainerCreateOptions(autoRemove: remove)
try await client.create(
configuration: config,
options: options,
kernel: kernel,
initImage: initfs
fqdn: fqdn
)
progress.set(description: "Starting cluster")
let io = try ProcessIO.create(tty: false, interactive: false, detach: true)
defer { try? io.close() }
let process = try await client.bootstrap(id: name, stdio: io.stdio)
try await process.start()
try io.closeAfterStart()
try await provisioner.provision(name: name, log: log)
progress.set(description: "Waiting for node to boot")
try await K8sHelper.waitForNodeBooted(containerId: name, client: client, log: log)
let snapshot = try await client.get(id: name)
guard let vmIP = snapshot.networks.first?.ipv4Address.address.description else {
throw ContainerizationError(.internalError, message: "no VM IP for control plane \(name)")
}
var sans = ["127.0.0.1"]
if let fqdn { sans.append(contentsOf: [vmIP, fqdn]) }
progress.set(description: "Running kubeadm init")
try await K8sHelper.prepareNode(nodeID: name, client: client, log: log)
try await K8sHelper.bootstrapControlPlane(
nodeID: name, apiServerSANs: sans, advertiseAddress: vmIP,
client: client, log: log)
progress.set(description: "Waiting for cluster to be ready")
try await K8sHelper.waitForReady(containerId: name, client: client, log: log)
progress.set(description: "Writing kubeconfig")
let client = ContainerClient()
do {
let rawConfig = try await K8sHelper.fetchConfig(containerId: name, client: client, log: log)
let kubeConfig = try await K8sHelper.transformConfig(rawConfig, containerId: name, fqdn: fqdn, client: client)
try K8sHelper.mergeConfig(kubeConfig, containerId: name, setCurrentContext: true, log: log)
let vmIP = try await provisioner.address(name: name, log: log)
var sans = ["127.0.0.1"]
if let fqdn { sans.append(contentsOf: [vmIP, fqdn]) }
progress.set(description: "Running kubeadm init")
try await K8sHelper.prepareNode(nodeID: name, client: client, log: log)
try await K8sHelper.bootstrapControlPlane(
nodeID: name, apiServerSANs: sans, advertiseAddress: vmIP,
schedulable: provisioner.roles.contains(StandardRoles.worker),
client: client, log: log)
progress.set(description: "Waiting for cluster to be ready")
try await K8sHelper.waitForReady(containerId: name, client: client, log: log)
progress.set(description: "Writing kubeconfig")
do {
let rawConfig = try await K8sHelper.fetchConfig(containerId: name, client: client, log: log)
let kubeConfig = try await K8sHelper.transformConfig(rawConfig, containerId: name, fqdn: fqdn, client: client)
try K8sHelper.mergeConfig(kubeConfig, containerId: name, setCurrentContext: true, log: log)
} catch {
log.warning("failed to write kubeconfig", metadata: ["name": "\(name)", "error": "\(error)"])
log.info("cluster is running; use 'container k8s write-config --name \(name)' to write the kubeconfig")
}
} catch {
log.warning("failed to write kubeconfig", metadata: ["name": "\(name)", "error": "\(error)"])
log.info("cluster is running; use 'container k8s write-config --name \(name)' to write the kubeconfig")
try? await provisioner.teardown(name: name, log: log)
try? K8sHelper.removeConfig(containerId: name, log: log)
throw error
}
progress.finish()
+17 -571
View File
@@ -15,183 +15,54 @@
//===----------------------------------------------------------------------===//
import ContainerAPIClient
import ContainerPersistence
import ContainerPlugin
import ContainerResource
import ContainerVersion
import ContainerizationError
import ContainerizationOCI
import ContainerizationOS
import Darwin
import Foundation
import Logging
import SystemPackage
import Yams
// MARK: - ListDisplayable
protocol ListDisplayable {
static var tableHeader: [String] { get }
var tableRow: [String] { get }
var quietValue: String { get }
}
// MARK: - TableOutput
struct TableOutput: Sendable {
private let rows: [[String]]
private let spacing: Int
init(rows: [[String]], spacing: Int = 2) {
self.rows = rows
self.spacing = spacing
}
func format() -> String {
var output = ""
let maxLengths = self.maxLength()
for rowIndex in 0..<self.rows.count {
let row = self.rows[rowIndex]
for columnIndex in 0..<row.count - 1 {
let currentLength = (maxLengths[columnIndex] ?? 0) + self.spacing
let padded = row[columnIndex].padding(toLength: currentLength, withPad: " ", startingAt: 0)
output += padded
}
output += row.last ?? ""
output += (rowIndex == self.rows.count - 1) ? "" : "\n"
}
return output
}
private func maxLength() -> [Int: Int] {
var output: [Int: Int] = [:]
for row in self.rows {
for (i, column) in row.enumerated() {
let currentMax = output[i] ?? 0
output[i] = (column.count > currentMax) ? column.count : currentMax
}
}
return output
}
}
// MARK: - K8sHelper
struct K8sHelper {
static let pluginName: String = "k8s"
static let defaultName: String = "k8s-dev"
static let controlPlaneRoleName: String = "control-plane"
public struct K8sHelper {
public static let pluginName: String = "k8s"
public static let defaultName: String = "k8s-dev"
public static let controlPlaneRoleName: String = "control-plane"
public static let workerRoleName: String = "worker"
private static var defaultCPUs: Int64 {
Int64(max(ProcessInfo.processInfo.processorCount / 4, 2))
}
private static var defaultMemory: String {
let gb = Int(ProcessInfo.processInfo.physicalMemory / (1024 * 1024 * 1024)) / 4
return "\(max(gb, 2))g"
}
static let nodeImage = "docker.io/kindest/node:v1.35.5@sha256:ce977ae6d65918d0b58a5f8b5e940429c2ce42fa3a5619ec2bbc60b949c0ac95"
private static let kubeconfigPath = "/etc/kubernetes/admin.conf"
private static let kubeconfigEnv = "KUBECONFIG=\(kubeconfigPath)"
private static let kubectlPath = "/bin/kubectl"
private static let kubeadmPath = "/usr/bin/kubeadm"
private static let ignorePreflightErrors =
public static let nodeImage = "docker.io/kindest/node:v1.35.5@sha256:ce977ae6d65918d0b58a5f8b5e940429c2ce42fa3a5619ec2bbc60b949c0ac95"
static let kubeconfigPath = "/etc/kubernetes/admin.conf"
static let kubeconfigEnv = "KUBECONFIG=/etc/kubernetes/admin.conf"
static let kubectlPath = "/bin/kubectl"
public static let kubeadmPath = "/usr/bin/kubeadm"
public static let ignorePreflightErrors =
"Swap,SystemVerification,FileContent--proc-sys-net-bridge-bridge-nf-call-iptables"
private static let podSubnet = "10.244.0.0/16"
static let podSubnet = "10.244.0.0/16"
// kubeadm default service subnet; must stay in sync if ClusterConfiguration.serviceSubnet is ever set.
private static let serviceSubnet = "10.96.0.0/12"
static let serviceSubnet = "10.96.0.0/12"
// Proxy env var names forwarded from the host into the cluster container.
static let proxyEnvVars = ["HTTP_PROXY", "HTTPS_PROXY", "NO_PROXY", "http_proxy", "https_proxy", "no_proxy"]
// Returns proxy env vars with NO_PROXY augmented to bypass internal cluster CIDRs.
// Without this, kubelet routes apiserver traffic through the host proxy and times out.
static func nodeProxyEnv() -> [String] {
let bypassCIDRs = "192.168.0.0/16,\(podSubnet),\(serviceSubnet)"
let hostEnv = ProcessInfo.processInfo.environment
return proxyEnvVars.map { name in
guard name.uppercased() == "NO_PROXY" else { return name }
let existing = hostEnv[name] ?? hostEnv[name == "NO_PROXY" ? "no_proxy" : "NO_PROXY"] ?? ""
let augmented = existing.isEmpty ? bypassCIDRs : "\(existing),\(bypassCIDRs)"
return "\(name)=\(augmented)"
}
}
private static let clusterContainerPort: UInt16 = 6443
private static let clusterHostPortBase: UInt16 = 6445
private static func findAvailableHostPort(excluding: Set<UInt16> = []) throws -> UInt16 {
var port = clusterHostPortBase
while port < UInt16.max {
if excluding.contains(port) {
port += 1
continue
}
let sock = Darwin.socket(AF_INET, SOCK_STREAM, 0)
guard sock >= 0 else {
throw ContainerizationError(.internalError, message: "socket() failed while probing for available port")
}
var addr = sockaddr_in()
addr.sin_family = sa_family_t(AF_INET)
addr.sin_port = port.bigEndian
addr.sin_addr.s_addr = INADDR_ANY
let available = withUnsafePointer(to: &addr) { ptr in
ptr.withMemoryRebound(to: sockaddr.self, capacity: 1) {
Darwin.bind(sock, $0, socklen_t(MemoryLayout<sockaddr_in>.size)) == 0
}
}
Darwin.close(sock)
if available { return port }
port += 1
}
throw ContainerizationError(.internalError, message: "no available host port found above \(clusterHostPortBase)")
}
static func clusterPort() async throws -> String {
let snapshots = try await ContainerClient().list(
filters: ContainerListFilters(labels: [ResourceLabelKeys.plugin: pluginName])
)
let reserved = Set(snapshots.flatMap { $0.configuration.publishedPorts.map(\.hostPort) })
let port = try findAvailableHostPort(excluding: reserved)
return "\(port):\(clusterContainerPort)"
}
private static let kubeconfigDir: FilePath = FilePath(
FileManager.default.homeDirectoryForCurrentUser.path(percentEncoded: false)
).appending(".kube")
public static let clusterContainerPort: UInt16 = 6443
// MARK: - Resource defaults
static func defaultedResourceFlags(_ flags: Flags.Resource) -> Flags.Resource {
public static func defaultedResourceFlags(_ flags: Flags.Resource) -> Flags.Resource {
var f = flags
if f.cpus == nil { f.cpus = defaultCPUs }
if f.memory == nil { f.memory = defaultMemory }
return f
}
// MARK: - Image management
static func ensureImage(nodeImage: String = K8sHelper.nodeImage, log: Logger, containerSystemConfig: ContainerSystemConfig) async throws {
do {
_ = try await ClientImage.get(reference: nodeImage, containerSystemConfig: containerSystemConfig)
log.debug("k8s node image present", metadata: ["ref": "\(nodeImage)"])
return
} catch let error as ContainerizationError where error.code == .notFound {
log.info("Pulling k8s node image", metadata: ["ref": "\(nodeImage)"])
}
let platform = try Platform(from: "linux/\(Arch.hostArchitecture().rawValue)")
_ = try await ClientImage.fetch(
reference: nodeImage,
platform: platform,
scheme: .https,
containerSystemConfig: containerSystemConfig,
progressUpdate: nil)
}
// MARK: - Node bootstrap
private static func execCapture(
// Shared exec helper used by bootstrap, readiness, and kubeconfig extensions.
public static func execCapture(
containerId: String, executable: String, arguments: [String],
client: ContainerClient
) async throws -> (code: Int32, output: String) {
@@ -209,418 +80,6 @@ struct K8sHelper {
return (code, String(data: data, encoding: .utf8) ?? "")
}
static func prepareNode(nodeID: String, client: ContainerClient, log: Logger) async throws {
log.info("Preparing node", metadata: ["id": "\(nodeID)"])
let result = try await execCapture(
containerId: nodeID, executable: "/bin/sh",
arguments: ["-c", nodePrepScript], client: client)
guard result.code == 0 else {
throw ContainerizationError(.internalError, message: "node prep failed on \(nodeID): \(result.output)")
}
}
static func bootstrapControlPlane(
nodeID: String, apiServerSANs: [String], advertiseAddress: String,
client: ContainerClient, log: Logger
) async throws {
let configYAML = initConfigYAML(advertiseAddress: advertiseAddress, certSANs: apiServerSANs)
var r = try await execCapture(
containerId: nodeID, executable: "/bin/sh",
arguments: ["-c", "cat > /etc/kubernetes/kubeadm-config.yaml <<'EOF'\n\(configYAML)\nEOF"],
client: client)
guard r.code == 0 else {
throw ContainerizationError(.internalError, message: "write kubeadm config failed on \(nodeID): \(r.output)")
}
log.info("Running kubeadm init", metadata: ["node": "\(nodeID)"])
r = try await execCapture(
containerId: nodeID, executable: kubeadmPath,
arguments: [
"init", "--config", "/etc/kubernetes/kubeadm-config.yaml",
"--ignore-preflight-errors", ignorePreflightErrors,
],
client: client)
guard r.code == 0 else {
throw ContainerizationError(.internalError, message: "kubeadm init failed on \(nodeID): \(r.output)")
}
r = try await execCapture(
containerId: nodeID, executable: "/bin/sh",
arguments: ["-c", "mkdir -p /root/.kube && cp \(kubeconfigPath) /root/.kube/config"],
client: client)
guard r.code == 0 else {
throw ContainerizationError(.internalError, message: "failed to install root kubeconfig on \(nodeID): \(r.output)")
}
log.info("Removing control-plane taint for single-node scheduling", metadata: ["node": "\(nodeID)"])
_ = try await runProbe(
client: client, containerId: nodeID,
arguments: ["taint", "nodes", "--all", "node-role.kubernetes.io/control-plane-"])
log.info("Applying kindnet CNI", metadata: ["node": "\(nodeID)"])
let manifest = try await loadKindnetManifest(log: log)
let apply =
"cat > /tmp/kindnet.yaml <<'EOF'\n\(manifest)\nEOF\n"
+ "\(kubeconfigEnv) kubectl apply -f /tmp/kindnet.yaml"
r = try await execCapture(
containerId: nodeID, executable: "/bin/sh",
arguments: ["-c", apply], client: client)
guard r.code == 0 else {
throw ContainerizationError(.internalError, message: "apply CNI failed on \(nodeID): \(r.output)")
}
}
private static func loadKindnetManifest(log: Logger) async throws -> String {
let pluginLoader = try await makePluginLoader(log: log)
guard let plugin = pluginLoader.findPlugin(forExecutable: CommandLine.executablePath),
let resourceURL = plugin.resourceURL
else {
throw ContainerizationError(.internalError, message: "unable to locate k8s plugin installation or resources")
}
let url = resourceURL.appendingPathComponent("kindnet.yaml")
guard let contents = try? String(contentsOf: url, encoding: .utf8) else {
throw ContainerizationError(.internalError, message: "kindnet manifest resource missing at \(url.path)")
}
return contents
}
/// NOTE: This duplicates `Application.createPluginLoader()` in
/// Sources/ContainerCommands/Application.swift. `ContainerK8s` cannot depend on
/// `ContainerCommands`, so the plugin directory/factory list here is kept in sync
/// by hand if that logic changes, update this copy too (or factor a shared
/// constructor into `ContainerPlugin`).
private static func makePluginLoader(log: Logger) async throws -> PluginLoader {
let health = try await ClientHealthCheck.ping(timeout: .seconds(10))
let installRootPath = FilePath(health.installRoot.path(percentEncoded: false))
let userPluginsURL = PluginLoader.userPluginsDir(installRoot: health.installRoot)
var directoryExists: ObjCBool = false
_ = FileManager.default.fileExists(atPath: userPluginsURL.path, isDirectory: &directoryExists)
let appBundlePluginsURL = Bundle.main.resourceURL?.appending(path: "plugins")
let installRootPluginsPath =
installRootPath
.appending(FilePath.Component("libexec"))
.appending(FilePath.Component("container"))
.appending(FilePath.Component("plugins"))
let installRootPluginsURL = URL(fileURLWithPath: installRootPluginsPath.string)
let pluginDirectories = [
directoryExists.boolValue ? userPluginsURL : nil,
appBundlePluginsURL,
installRootPluginsURL,
].compactMap { $0 }
return try PluginLoader(
appRoot: health.appRoot,
installRoot: health.installRoot,
logRoot: health.logRoot,
pluginDirectories: pluginDirectories,
pluginFactories: [
DefaultPluginFactory(logger: log),
AppBundlePluginFactory(logger: log),
],
log: log
)
}
private static let nodePrepScript: String = {
"""
set -e
mkdir -p /etc/containerd/conf.d
cat > /etc/containerd/conf.d/native-snapshotter.toml <<'EOF'
[plugins.'io.containerd.cri.v1.images']
snapshotter = "native"
EOF
sysctl -w net.ipv4.ip_forward=1 2>/dev/null || true
sysctl -w net.bridge.bridge-nf-call-iptables=1 2>/dev/null || true
sysctl -w net.bridge.bridge-nf-call-ip6tables=1 2>/dev/null || true
systemctl restart containerd
ctr -n k8s.io images tag registry.k8s.io/pause:3.10 registry.k8s.io/pause:3.10.1 2>/dev/null || true
/usr/sbin/iptables-nft -t mangle -A OUTPUT -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --set-mss 1220
/usr/sbin/iptables-nft -t mangle -A FORWARD -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --set-mss 1220
"""
}()
private static func initConfigYAML(advertiseAddress: String, certSANs: [String]) -> String {
let sans = certSANs.map { " - \($0)" }.joined(separator: "\n")
return """
apiVersion: kubeadm.k8s.io/v1beta4
kind: InitConfiguration
localAPIEndpoint:
advertiseAddress: \(advertiseAddress)
bindPort: 6443
nodeRegistration:
criSocket: unix:///run/containerd/containerd.sock
---
apiVersion: kubeadm.k8s.io/v1beta4
kind: ClusterConfiguration
kubernetesVersion: \(kubernetesVersion())
networking:
podSubnet: \(podSubnet)
apiServer:
certSANs:
\(sans)
---
apiVersion: kubelet.config.k8s.io/v1beta1
kind: KubeletConfiguration
cgroupDriver: systemd
failSwapOn: false
"""
}
private static func kubernetesVersion() -> String {
let nameAndTag = nodeImage.split(separator: "@").first.map(String.init) ?? nodeImage
guard let ref = try? Reference.parse(nameAndTag), let tag = ref.tag else { return "v1.35" }
return tag
}
// MARK: - FQDN detection
static func fqdn(for name: String, domain: String?) -> String? {
if name.contains(".") { return name }
guard let domain, !domain.isEmpty else { return nil }
return "\(name).\(domain)"
}
static func detectFQDN(name: String) async -> String? {
let domain = try? await ConfigurationLoader.load().dns.domain
return fqdn(for: name, domain: domain)
}
// MARK: - Readiness
static func waitForNodeBooted(containerId: String, client: ContainerClient, log: Logger) async throws {
let timeout = 120
log.info("Waiting for node to boot", metadata: ["node": "\(containerId)"])
for attempt in 1...timeout {
let result = try await execCapture(
containerId: containerId, executable: "/bin/sh",
arguments: ["-c", "test -S /run/containerd/containerd.sock"], client: client)
if result.code == 0 { return }
if attempt == timeout {
log.info("check container logs with 'container logs \(containerId)'")
throw ContainerizationError(
.timeout,
message: "node \(containerId) did not boot within \(timeout * 2)s: containerd socket not present at /run/containerd/containerd.sock"
)
}
try await Task.sleep(for: .seconds(2))
}
}
private static func runProbe(client: ContainerClient, containerId: String, arguments: [String]) async throws -> Int32 {
let devNull = FileHandle(forWritingAtPath: "/dev/null")
defer { try? devNull?.close() }
let probe = ProcessConfiguration(
executable: kubectlPath,
arguments: arguments,
environment: [kubeconfigEnv],
terminal: false)
let proc = try await client.createProcess(
containerId: containerId,
processId: UUID().uuidString.lowercased(),
configuration: probe,
stdio: [nil, devNull, devNull])
try await proc.start()
return try await proc.wait()
}
static func waitForReady(containerId: String, client: ContainerClient, log: Logger) async throws {
let nodeReadyTimeout = 180
let podReadyTimeout = 300
log.info("Waiting for control-plane node to become ready")
for attempt in 1...nodeReadyTimeout {
let code: Int32
do {
code = try await runProbe(
client: client, containerId: containerId,
arguments: ["wait", "--for=condition=Ready", "node", "--all", "--timeout=2s"])
} catch {
throw ContainerizationError(
.internalError, message: "k8s cluster \(containerId) stopped unexpectedly during startup: \(error)")
}
if code == 0 { break }
if attempt == nodeReadyTimeout {
log.info("inspect node state with 'container exec \(containerId) kubectl get nodes -o wide'")
throw ContainerizationError(
.timeout,
message: "k8s cluster \(containerId) control-plane node did not become Ready within \(nodeReadyTimeout * 2)s"
)
}
try await Task.sleep(for: .seconds(2))
}
log.info("Waiting for kube-system pods to become ready")
for attempt in 1...podReadyTimeout {
let code: Int32
do {
code = try await runProbe(
client: client, containerId: containerId,
arguments: ["wait", "--for=condition=Available", "deployment/coredns", "-n", "kube-system", "--timeout=2s"])
} catch {
throw ContainerizationError(
.internalError, message: "k8s cluster \(containerId) stopped unexpectedly during startup: \(error)")
}
if code == 0 { return }
if attempt < podReadyTimeout {
try await Task.sleep(for: .seconds(2))
}
}
log.info("inspect pod state with 'container exec \(containerId) kubectl get pods -n kube-system'")
throw ContainerizationError(
.timeout,
message: "k8s cluster \(containerId) kube-system pods did not become available within \(podReadyTimeout * 2)s"
)
}
// MARK: - Kubeconfig
static func fetchConfig(containerId: String, client: ContainerClient, log: Logger) async throws -> KubeConfig {
log.info("Fetching kubeconfig", metadata: ["cluster": "\(containerId)"])
let container = try await client.get(id: containerId)
guard container.configuration.labels[ResourceLabelKeys.plugin] == pluginName else {
log.error("container is not a k8s cluster, refusing config fetch", metadata: ["name": "\(containerId)"])
throw ContainerizationError(.invalidArgument, message: "\(containerId) is not a k8s cluster")
}
let (exitCode, yaml) = try await execCapture(
containerId: containerId, executable: "/bin/cat",
arguments: [kubeconfigPath], client: client)
guard exitCode == 0 else {
throw ContainerizationError(.internalError, message: "failed to read kubeconfig from \(containerId): exit \(exitCode)")
}
do {
return try YAMLDecoder().decode(KubeConfig.self, from: yaml)
} catch {
throw ContainerizationError(.internalError, message: "failed to decode kubeconfig from \(containerId): \(error)")
}
}
static func transformConfig(_ config: KubeConfig, containerId: String, fqdn: String?, client: ContainerClient) async throws -> KubeConfig {
var config = config
let serverAddress: String
if let fqdn {
serverAddress = "https://\(fqdn):6443"
} else {
let snapshot = try await client.get(id: containerId)
guard
let hostPort = snapshot.configuration.publishedPorts
.first(where: { $0.containerPort == clusterContainerPort })?.hostPort
else {
throw ContainerizationError(.internalError, message: "no published port for cluster \(containerId)")
}
serverAddress = "https://127.0.0.1:\(hostPort)"
}
for i in config.clusters.indices {
config.clusters[i].cluster.server = serverAddress
}
// Rename all entries to containerId. kubeadm uses fixed names ("kubernetes",
// "kubernetes-admin@kubernetes", etc.) rather than "default", so we rename
// unconditionally and fix up the cross-references in the context.
config.clusters = config.clusters.map {
var c = $0
c.name = containerId
return c
}
config.users = config.users.map {
var u = $0
u.name = containerId
return u
}
config.contexts = config.contexts.map {
var nc = $0
nc.name = containerId
nc.context.cluster = containerId
nc.context.user = containerId
return nc
}
config.currentContext = containerId
return config
}
static func resolveKubeconfigMergePath() -> FilePath {
let defaultPath = kubeconfigDir.appending("config")
guard let raw = Darwin.getenv("KUBECONFIG") else { return defaultPath }
let env = String(cString: raw)
guard !env.isEmpty else { return defaultPath }
let paths = env.split(separator: ":").map(String.init).filter { !$0.isEmpty }
guard !paths.isEmpty else { return defaultPath }
if paths.count == 1 { return FilePath(paths[0]) }
for p in paths where FileManager.default.fileExists(atPath: p) {
return FilePath(p)
}
return FilePath(paths[paths.count - 1])
}
static func mergeConfig(_ config: KubeConfig, containerId: String, targetPath: FilePath? = nil, setCurrentContext: Bool = false, log: Logger) throws {
let path = targetPath ?? resolveKubeconfigMergePath()
log.info("Writing kubeconfig", metadata: ["cluster": "\(containerId)", "path": "\(path)"])
let targetDir = path.removingLastComponent()
try FileManager.default.createDirectory(atPath: targetDir.string, withIntermediateDirectories: true)
var existing: KubeConfig
if FileManager.default.fileExists(atPath: path.string) {
do {
let yaml = try String(contentsOfFile: path.string, encoding: .utf8)
existing = try YAMLDecoder().decode(KubeConfig.self, from: yaml)
} catch {
throw ContainerizationError(
.internalError,
message: "kubeconfig at \(path) could not be parsed: \(error)"
)
}
} else {
existing = .empty
}
existing.clusters.removeAll { $0.name == containerId }
existing.contexts.removeAll { $0.name == containerId }
existing.users.removeAll { $0.name == containerId }
existing.clusters.append(contentsOf: config.clusters)
existing.contexts.append(contentsOf: config.contexts)
existing.users.append(contentsOf: config.users)
if setCurrentContext {
existing.currentContext = containerId
}
let output = try YAMLEncoder().encode(existing)
try output.write(toFile: path.string, atomically: true, encoding: .utf8)
}
static func removeConfig(containerId: String, log: Logger) throws {
let path = resolveKubeconfigMergePath()
log.info("Removing kubeconfig", metadata: ["cluster": "\(containerId)", "path": "\(path)"])
guard FileManager.default.fileExists(atPath: path.string) else { return }
let existing: KubeConfig
do {
let yaml = try String(contentsOfFile: path.string, encoding: .utf8)
existing = try YAMLDecoder().decode(KubeConfig.self, from: yaml)
} catch {
log.warning("kubeconfig exists but could not be parsed, skipping removal", metadata: ["path": "\(path)", "error": "\(error)"])
return
}
var updated = existing
updated.clusters.removeAll { $0.name == containerId }
updated.contexts.removeAll { $0.name == containerId }
updated.users.removeAll { $0.name == containerId }
if updated.currentContext == containerId {
updated.currentContext = nil
}
let output = try YAMLEncoder().encode(updated)
try output.write(toFile: path.string, atomically: true, encoding: .utf8)
}
// MARK: - List rows
static func buildK8sRows(from snapshots: [ContainerSnapshot]) -> [K8sNodeResource] {
@@ -669,19 +128,6 @@ struct K8sHelper {
}
return TableOutput(rows: rows).format()
}
// MARK: - Image reference helpers
static func isShortName(_ reference: String) -> Bool {
guard let ref = try? Reference.parse(reference) else { return true }
return ref.domain == nil
}
static func fqReference(_ reference: String) -> String {
guard let ref = try? Reference.parse(reference) else { return reference }
ref.normalize()
return ref.description
}
}
// MARK: - K8sNodeResource
@@ -0,0 +1,229 @@
//===----------------------------------------------------------------------===//
// Copyright © 2026 Apple Inc. and the container project authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//===----------------------------------------------------------------------===//
import ContainerAPIClient
import ContainerPersistence
import ContainerResource
import ContainerizationError
import Logging
/// A `NodeProvisioner` that runs a k8s node as a Linux container on the same host.
public struct LinuxNodeProvisioner: NodeProvisioner {
public let roles: [String]
private let clusterName: String
private let nodeImage: String?
private let cpus: Int64?
private let memory: String?
private let registryScheme: String
private let maxConcurrentDownloads: Int
private let remove: Bool
private let fqdn: String?
public init(
clusterName: String,
roles: [String] = [StandardRoles.controlPlane],
nodeImage: String? = nil,
cpus: Int64? = nil,
memory: String? = nil,
registryScheme: String = "https",
maxConcurrentDownloads: Int = 3,
remove: Bool = false,
fqdn: String? = nil
) throws {
guard !roles.isEmpty else {
throw ContainerizationError(.invalidArgument, message: "LinuxNode roles must not be empty")
}
let known: Set<String> = [StandardRoles.controlPlane, StandardRoles.worker]
let unrecognized = roles.filter { !known.contains($0) }
guard unrecognized.isEmpty else {
throw ContainerizationError(
.invalidArgument,
message: "LinuxNode roles contains unrecognized values: \(unrecognized.joined(separator: ", "))")
}
self.clusterName = clusterName
self.roles = roles
self.nodeImage = nodeImage
self.cpus = cpus
self.memory = memory
self.registryScheme = registryScheme
self.maxConcurrentDownloads = maxConcurrentDownloads
self.remove = remove
self.fqdn = fqdn
}
public func provision(name: String, log: Logger) async throws {
let containerSystemConfig: ContainerSystemConfig = try await ConfigurationLoader.load()
let resolvedImage = nodeImage ?? K8sHelper.nodeImage
try await K8sHelper.ensureImage(nodeImage: resolvedImage, log: log, containerSystemConfig: containerSystemConfig)
let isControlPlane = roles.contains(StandardRoles.controlPlane)
let publishPorts = isControlPlane && fqdn == nil ? [try await K8sHelper.clusterPort()] : []
let management = Flags.Management(
arch: Arch.hostArchitecture().rawValue,
capAdd: ["ALL"],
capDrop: [],
cidfile: "",
detach: true,
dns: .init(domain: nil, nameservers: [], options: [], searchDomains: []),
dnsDisabled: false,
entrypoint: nil,
initImage: nil,
kernel: nil,
kernelArgs: [],
labels: [
"\(ResourceLabelKeys.plugin)=\(K8sHelper.pluginName)",
"\(ResourceLabelKeys.role)=\(roles.joined(separator: ","))",
],
maskedPaths: [],
mounts: [],
name: name,
networks: [],
os: "linux",
platform: nil,
publishPorts: publishPorts,
publishSockets: [],
readOnly: false,
readonlyPaths: [],
remove: remove,
rosetta: true,
runtime: nil,
ssh: false,
shmSize: nil,
tmpFs: [],
useInit: false,
virtualization: false,
volumes: []
)
let updatedResource = K8sHelper.defaultedResourceFlags(Flags.Resource(cpus: cpus, memory: memory))
let processFlags = Flags.Process(
cwd: nil,
env: K8sHelper.nodeProxyEnv(),
envFile: [],
gid: nil,
interactive: false,
tty: false,
uid: nil,
ulimits: [],
user: nil
)
var (config, kernel, initfs) = try await Utility.containerConfigFromFlags(
id: name,
image: resolvedImage,
arguments: [],
process: processFlags,
management: management,
resource: updatedResource,
registry: Flags.Registry(scheme: registryScheme),
imageFetch: Flags.ImageFetch(maxConcurrentDownloads: maxConcurrentDownloads),
containerSystemConfig: containerSystemConfig,
progressUpdate: { _ in },
log: log
)
config.maskedPaths = []
config.readonlyPaths = []
let client = ContainerClient()
try await client.create(
configuration: config,
options: ContainerCreateOptions(autoRemove: remove),
kernel: kernel,
initImage: initfs
)
let io = try ProcessIO.create(tty: false, interactive: false, detach: true)
defer { try? io.close() }
let process = try await client.bootstrap(id: name, stdio: io.stdio)
try await process.start()
try io.closeAfterStart()
try await K8sHelper.waitForNodeBooted(containerId: name, client: client, log: log)
}
public func address(name: String, log: Logger) async throws -> String {
let client = ContainerClient()
let snapshot = try await client.get(id: name)
guard let ip = snapshot.networks.first?.ipv4Address.address.description else {
throw ContainerizationError(.internalError, message: "no VM IP for node \(name)")
}
return ip
}
public func join(
name: String,
controlPlaneEndpoint: String,
token: String,
caCertHash: String,
log: Logger
) async throws {
let client = ContainerClient()
try await K8sHelper.prepareNode(nodeID: name, client: client, log: log)
let (code, output) = try await K8sHelper.execCapture(
containerId: name,
executable: K8sHelper.kubeadmPath,
arguments: [
"join", controlPlaneEndpoint,
"--token", token,
"--discovery-token-ca-cert-hash", caCertHash,
"--ignore-preflight-errors", K8sHelper.ignorePreflightErrors,
"--cri-socket", "unix:///run/containerd/containerd.sock",
],
client: client)
guard code == 0 else {
throw ContainerizationError(.internalError, message: "kubeadm join failed on \(name): \(output)")
}
}
public func waitForReady(name: String, log: Logger) async throws {
let timeout = 180
let client = ContainerClient()
log.info("Waiting for node to become ready", metadata: ["node": "\(name)"])
for attempt in 1...timeout {
let code: Int32
do {
code = try await K8sHelper.runProbe(
client: client,
containerId: clusterName,
arguments: ["wait", "--for=condition=Ready", "node/\(name)", "--timeout=2s"])
} catch {
throw ContainerizationError(
.internalError,
message: "node \(name) stopped unexpectedly while waiting for readiness: \(error)")
}
if code == 0 { return }
if attempt == timeout {
throw ContainerizationError(
.timeout,
message: "node \(name) did not become Ready within \(timeout * 2)s")
}
try await Task.sleep(for: .seconds(2))
}
}
public func teardown(name: String, log: Logger) async throws {
let client = ContainerClient()
do {
try? await client.stop(id: name)
try await client.delete(id: name)
} catch let error as ContainerizationError where error.code == .notFound {
log.debug("node container not found, skipping delete", metadata: ["name": "\(name)"])
}
}
}
@@ -0,0 +1,65 @@
//===----------------------------------------------------------------------===//
// Copyright © 2026 Apple Inc. and the container project authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//===----------------------------------------------------------------------===//
import Logging
/// Well-known role identifiers for use in `NodeProvisioner.roles`.
public struct StandardRoles {
public static let controlPlane = "control-plane"
public static let worker = "worker"
}
/// Manages the lifecycle of a cluster node (control plane or worker).
///
/// Implement this protocol to provision nodes for a cluster created by `K8sCreate`.
///
/// For a **control-plane** node, `K8sCreate` calls:
/// 1. `provision` start the machine before kubeadm init runs
/// 2. `address` return the node IP, used as the advertise address and cert SAN
/// 3. `teardown` called on failure to clean up the node
///
/// For a **worker** node, the caller additionally calls:
/// 4. `join` run kubeadm join with the bootstrap token and CA cert hash
/// 5. `waitForReady` poll until the node is registered and Ready in the cluster
///
/// `K8sDelete` calls `teardown` before removing cluster containers.
///
/// If any provisioner step throws, `K8sCreate` tears down the cluster before re-throwing.
public protocol NodeProvisioner: Sendable {
/// The roles this node will serve (e.g. `[StandardRoles.controlPlane]`).
var roles: [String] { get }
/// Start the machine identified by `name` before cluster initialisation.
func provision(name: String, log: Logger) async throws
/// Return the IP address of the machine identified by `name`.
func address(name: String, log: Logger) async throws -> String
/// Join a worker node to the cluster using the supplied kubeadm credentials.
///
/// - Parameters:
/// - name: Node identifier (matches the name passed to `provision`).
/// - controlPlaneEndpoint: `<ip>:<port>` of the control-plane API server.
/// - token: kubeadm bootstrap token (format `<id>.<secret>`).
/// - caCertHash: Discovery token CA cert hash including the `sha256:` prefix.
func join(name: String, controlPlaneEndpoint: String, token: String, caCertHash: String, log: Logger) async throws
/// Poll until the node with `name` is registered and Ready in the cluster.
func waitForReady(name: String, log: Logger) async throws
/// Remove the machine identified by `name`.
func teardown(name: String, log: Logger) async throws
}
@@ -0,0 +1,170 @@
//===----------------------------------------------------------------------===//
// Copyright © 2026 Apple Inc. and the container project authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//===----------------------------------------------------------------------===//
import ContainerAPIClient
import ContainerPlugin
import ContainerizationError
import ContainerizationOCI
import Foundation
import Logging
extension K8sHelper {
public static func prepareNode(nodeID: String, client: ContainerClient, log: Logger) async throws {
log.info("Preparing node", metadata: ["id": "\(nodeID)"])
let result = try await execCapture(
containerId: nodeID, executable: "/bin/sh",
arguments: ["-c", nodePrepScript], client: client)
guard result.code == 0 else {
throw ContainerizationError(.internalError, message: "node prep failed on \(nodeID): \(result.output)")
}
}
static func bootstrapControlPlane(
nodeID: String, apiServerSANs: [String], advertiseAddress: String,
schedulable: Bool, client: ContainerClient, log: Logger
) async throws {
let configYAML = initConfigYAML(advertiseAddress: advertiseAddress, certSANs: apiServerSANs)
var r = try await execCapture(
containerId: nodeID, executable: "/bin/sh",
arguments: ["-c", "cat > /etc/kubernetes/kubeadm-config.yaml <<'EOF'\n\(configYAML)\nEOF"],
client: client)
guard r.code == 0 else {
throw ContainerizationError(.internalError, message: "write kubeadm config failed on \(nodeID): \(r.output)")
}
log.info("Running kubeadm init", metadata: ["node": "\(nodeID)"])
r = try await execCapture(
containerId: nodeID, executable: kubeadmPath,
arguments: [
"init", "--config", "/etc/kubernetes/kubeadm-config.yaml",
"--ignore-preflight-errors", ignorePreflightErrors,
],
client: client)
guard r.code == 0 else {
throw ContainerizationError(.internalError, message: "kubeadm init failed on \(nodeID): \(r.output)")
}
r = try await execCapture(
containerId: nodeID, executable: "/bin/sh",
arguments: ["-c", "mkdir -p /root/.kube && cp \(kubeconfigPath) /root/.kube/config"],
client: client)
guard r.code == 0 else {
throw ContainerizationError(.internalError, message: "failed to install root kubeconfig on \(nodeID): \(r.output)")
}
if schedulable {
log.info("Removing control-plane taint for single-node scheduling", metadata: ["node": "\(nodeID)"])
_ = try await runProbe(
client: client, containerId: nodeID,
arguments: ["taint", "nodes", "--all", "node-role.kubernetes.io/control-plane-"])
}
log.info("Applying kindnet CNI", metadata: ["node": "\(nodeID)"])
let manifest = try await loadKindnetManifest(log: log)
let apply =
"cat > /tmp/kindnet.yaml <<'EOF'\n\(manifest)\nEOF\n"
+ "\(kubeconfigEnv) kubectl apply -f /tmp/kindnet.yaml"
r = try await execCapture(
containerId: nodeID, executable: "/bin/sh",
arguments: ["-c", apply], client: client)
guard r.code == 0 else {
throw ContainerizationError(.internalError, message: "apply CNI failed on \(nodeID): \(r.output)")
}
}
static func createJoinToken(nodeID: String, client: ContainerClient) async throws -> (token: String, caCertHash: String) {
let (code, output) = try await execCapture(
containerId: nodeID, executable: kubeadmPath,
arguments: ["token", "create", "--print-join-command"],
client: client)
guard code == 0 else {
throw ContainerizationError(.internalError, message: "kubeadm token create failed on \(nodeID): \(output)")
}
let parts = output.trimmingCharacters(in: .whitespacesAndNewlines).components(separatedBy: " ")
guard let tokenIdx = parts.firstIndex(of: "--token"), tokenIdx + 1 < parts.count,
let hashIdx = parts.firstIndex(of: "--discovery-token-ca-cert-hash"), hashIdx + 1 < parts.count
else {
throw ContainerizationError(.internalError, message: "could not parse join command output from kubeadm on \(nodeID)")
}
return (token: parts[tokenIdx + 1], caCertHash: parts[hashIdx + 1])
}
private static func loadKindnetManifest(log: Logger) async throws -> String {
let pluginLoader = try await Utility.createPluginLoader(log: log)
guard let plugin = pluginLoader.findPlugin(forExecutable: CommandLine.executablePath),
let resourceURL = plugin.resourceURL
else {
throw ContainerizationError(.internalError, message: "unable to locate k8s plugin installation or resources")
}
let url = resourceURL.appendingPathComponent("kindnet.yaml")
guard let contents = try? String(contentsOf: url, encoding: .utf8) else {
throw ContainerizationError(.internalError, message: "kindnet manifest resource missing at \(url.path)")
}
return contents
}
private static var nodePrepScript: String {
"""
set -e
mkdir -p /etc/containerd/conf.d
cat > /etc/containerd/conf.d/native-snapshotter.toml <<'EOF'
[plugins.'io.containerd.cri.v1.images']
snapshotter = "native"
EOF
sysctl -w net.ipv4.ip_forward=1 2>/dev/null || true
sysctl -w net.bridge.bridge-nf-call-iptables=1 2>/dev/null || true
sysctl -w net.bridge.bridge-nf-call-ip6tables=1 2>/dev/null || true
systemctl restart containerd
ctr -n k8s.io images tag registry.k8s.io/pause:3.10 registry.k8s.io/pause:3.10.1 2>/dev/null || true
/usr/sbin/iptables-nft -t mangle -A OUTPUT -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --set-mss 1220
/usr/sbin/iptables-nft -t mangle -A FORWARD -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --set-mss 1220
"""
}
private static func initConfigYAML(advertiseAddress: String, certSANs: [String]) -> String {
let sans = certSANs.map { " - \($0)" }.joined(separator: "\n")
return """
apiVersion: kubeadm.k8s.io/v1beta4
kind: InitConfiguration
localAPIEndpoint:
advertiseAddress: \(advertiseAddress)
bindPort: 6443
nodeRegistration:
criSocket: unix:///run/containerd/containerd.sock
---
apiVersion: kubeadm.k8s.io/v1beta4
kind: ClusterConfiguration
kubernetesVersion: \(kubernetesVersion())
networking:
podSubnet: \(podSubnet)
apiServer:
certSANs:
\(sans)
---
apiVersion: kubelet.config.k8s.io/v1beta1
kind: KubeletConfiguration
cgroupDriver: systemd
failSwapOn: false
"""
}
private static func kubernetesVersion() -> String {
let nameAndTag = nodeImage.split(separator: "@").first.map(String.init) ?? nodeImage
guard let ref = try? Reference.parse(nameAndTag), let tag = ref.tag else { return "v1.35" }
return tag
}
}
@@ -0,0 +1,54 @@
//===----------------------------------------------------------------------===//
// Copyright © 2026 Apple Inc. and the container project authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//===----------------------------------------------------------------------===//
import ContainerAPIClient
import ContainerPersistence
import ContainerizationError
import ContainerizationOCI
import Logging
extension K8sHelper {
// MARK: - Image management
public static func ensureImage(nodeImage: String = K8sHelper.nodeImage, log: Logger, containerSystemConfig: ContainerSystemConfig) async throws {
do {
_ = try await ClientImage.get(reference: nodeImage, containerSystemConfig: containerSystemConfig)
log.debug("k8s node image present", metadata: ["ref": "\(nodeImage)"])
return
} catch let error as ContainerizationError where error.code == .notFound {
log.info("Pulling k8s node image", metadata: ["ref": "\(nodeImage)"])
}
let platform = try Platform(from: "linux/\(Arch.hostArchitecture().rawValue)")
_ = try await ClientImage.fetch(
reference: nodeImage,
platform: platform,
containerSystemConfig: containerSystemConfig,
progressUpdate: nil)
}
// MARK: - Image reference helpers
static func isShortName(_ reference: String) -> Bool {
guard let ref = try? Reference.parse(reference) else { return true }
return ref.domain == nil
}
static func fqReference(_ reference: String) -> String {
guard let ref = try? Reference.parse(reference) else { return reference }
ref.normalize()
return ref.description
}
}
@@ -0,0 +1,177 @@
//===----------------------------------------------------------------------===//
// Copyright © 2026 Apple Inc. and the container project authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//===----------------------------------------------------------------------===//
import ContainerAPIClient
import ContainerResource
import ContainerizationError
import Darwin
import Foundation
import Logging
import SystemPackage
import Yams
extension K8sHelper {
// MARK: - Kubeconfig
private static var kubeconfigDir: FilePath {
FilePath(FileManager.default.homeDirectoryForCurrentUser.path(percentEncoded: false))
.appending(".kube")
}
static func fetchConfig(containerId: String, client: ContainerClient, log: Logger) async throws -> KubeConfig {
log.info("Fetching kubeconfig", metadata: ["cluster": "\(containerId)"])
let container = try await client.get(id: containerId)
guard container.configuration.labels[ResourceLabelKeys.plugin] == pluginName else {
log.error("container is not a k8s cluster, refusing config fetch", metadata: ["name": "\(containerId)"])
throw ContainerizationError(.invalidArgument, message: "\(containerId) is not a k8s cluster")
}
let (exitCode, yaml) = try await execCapture(
containerId: containerId, executable: "/bin/cat",
arguments: [kubeconfigPath], client: client)
guard exitCode == 0 else {
throw ContainerizationError(.internalError, message: "failed to read kubeconfig from \(containerId): exit \(exitCode)")
}
do {
return try YAMLDecoder().decode(KubeConfig.self, from: yaml)
} catch {
throw ContainerizationError(.internalError, message: "failed to decode kubeconfig from \(containerId): \(error)")
}
}
static func transformConfig(_ config: KubeConfig, containerId: String, fqdn: String?, client: ContainerClient) async throws -> KubeConfig {
var config = config
let serverAddress: String
if let fqdn {
serverAddress = "https://\(fqdn):6443"
} else {
let snapshot = try await client.get(id: containerId)
guard
let hostPort = snapshot.configuration.publishedPorts
.first(where: { $0.containerPort == clusterContainerPort })?.hostPort
else {
throw ContainerizationError(.internalError, message: "no published port for cluster \(containerId)")
}
serverAddress = "https://127.0.0.1:\(hostPort)"
}
for i in config.clusters.indices {
config.clusters[i].cluster.server = serverAddress
}
// Rename all entries to containerId. kubeadm uses fixed names ("kubernetes",
// "kubernetes-admin@kubernetes", etc.) rather than "default", so we rename
// unconditionally and fix up the cross-references in the context.
config.clusters = config.clusters.map {
var c = $0
c.name = containerId
return c
}
config.users = config.users.map {
var u = $0
u.name = containerId
return u
}
config.contexts = config.contexts.map {
var nc = $0
nc.name = containerId
nc.context.cluster = containerId
nc.context.user = containerId
return nc
}
config.currentContext = containerId
return config
}
static func resolveKubeconfigMergePath() -> FilePath {
let defaultPath = kubeconfigDir.appending("config")
guard let raw = Darwin.getenv("KUBECONFIG") else { return defaultPath }
let env = String(cString: raw)
guard !env.isEmpty else { return defaultPath }
let paths = env.split(separator: ":").map(String.init).filter { !$0.isEmpty }
guard !paths.isEmpty else { return defaultPath }
if paths.count == 1 { return FilePath(paths[0]) }
for p in paths where FileManager.default.fileExists(atPath: p) {
return FilePath(p)
}
return FilePath(paths[paths.count - 1])
}
static func mergeConfig(_ config: KubeConfig, containerId: String, targetPath: FilePath? = nil, setCurrentContext: Bool = false, log: Logger) throws {
let path = targetPath ?? resolveKubeconfigMergePath()
log.info("Writing kubeconfig", metadata: ["cluster": "\(containerId)", "path": "\(path)"])
let targetDir = path.removingLastComponent()
try FileManager.default.createDirectory(atPath: targetDir.string, withIntermediateDirectories: true)
var existing: KubeConfig
if FileManager.default.fileExists(atPath: path.string) {
do {
let yaml = try String(contentsOfFile: path.string, encoding: .utf8)
existing = try YAMLDecoder().decode(KubeConfig.self, from: yaml)
} catch {
throw ContainerizationError(
.internalError,
message: "kubeconfig at \(path) could not be parsed: \(error)"
)
}
} else {
existing = .empty
}
existing.clusters.removeAll { $0.name == containerId }
existing.contexts.removeAll { $0.name == containerId }
existing.users.removeAll { $0.name == containerId }
existing.clusters.append(contentsOf: config.clusters)
existing.contexts.append(contentsOf: config.contexts)
existing.users.append(contentsOf: config.users)
if setCurrentContext {
existing.currentContext = containerId
}
let output = try YAMLEncoder().encode(existing)
try output.write(toFile: path.string, atomically: true, encoding: .utf8)
}
static func removeConfig(containerId: String, log: Logger) throws {
let path = resolveKubeconfigMergePath()
log.info("Removing kubeconfig", metadata: ["cluster": "\(containerId)", "path": "\(path)"])
guard FileManager.default.fileExists(atPath: path.string) else { return }
let existing: KubeConfig
do {
let yaml = try String(contentsOfFile: path.string, encoding: .utf8)
existing = try YAMLDecoder().decode(KubeConfig.self, from: yaml)
} catch {
log.warning("kubeconfig exists but could not be parsed, skipping removal", metadata: ["path": "\(path)", "error": "\(error)"])
return
}
var updated = existing
updated.clusters.removeAll { $0.name == containerId }
updated.contexts.removeAll { $0.name == containerId }
updated.users.removeAll { $0.name == containerId }
if updated.currentContext == containerId {
updated.currentContext = nil
}
let output = try YAMLEncoder().encode(updated)
try output.write(toFile: path.string, atomically: true, encoding: .utf8)
}
}
@@ -0,0 +1,91 @@
//===----------------------------------------------------------------------===//
// Copyright © 2026 Apple Inc. and the container project authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//===----------------------------------------------------------------------===//
import ContainerAPIClient
import ContainerPersistence
import ContainerResource
import ContainerizationError
import Darwin
import Foundation
import Logging
extension K8sHelper {
// MARK: - Networking
private static var clusterHostPortBase: UInt16 { 6445 }
// Returns proxy env vars with NO_PROXY augmented to bypass internal cluster CIDRs.
// Without this, kubelet routes apiserver traffic through the host proxy and times out.
public static func nodeProxyEnv() -> [String] {
let bypassCIDRs = "192.168.0.0/16,\(podSubnet),\(serviceSubnet)"
let hostEnv = ProcessInfo.processInfo.environment
return proxyEnvVars.map { name in
guard name.uppercased() == "NO_PROXY" else { return name }
let existing = hostEnv[name] ?? hostEnv[name == "NO_PROXY" ? "no_proxy" : "NO_PROXY"] ?? ""
let augmented = existing.isEmpty ? bypassCIDRs : "\(existing),\(bypassCIDRs)"
return "\(name)=\(augmented)"
}
}
private static func findAvailableHostPort(excluding: Set<UInt16> = []) throws -> UInt16 {
var port = clusterHostPortBase
while port < UInt16.max {
if excluding.contains(port) {
port += 1
continue
}
let sock = Darwin.socket(AF_INET, SOCK_STREAM, 0)
guard sock >= 0 else {
throw ContainerizationError(.internalError, message: "socket() failed while probing for available port")
}
var addr = sockaddr_in()
addr.sin_family = sa_family_t(AF_INET)
addr.sin_port = port.bigEndian
addr.sin_addr.s_addr = INADDR_ANY
let available = withUnsafePointer(to: &addr) { ptr in
ptr.withMemoryRebound(to: sockaddr.self, capacity: 1) {
Darwin.bind(sock, $0, socklen_t(MemoryLayout<sockaddr_in>.size)) == 0
}
}
Darwin.close(sock)
if available { return port }
port += 1
}
throw ContainerizationError(.internalError, message: "no available host port found above \(clusterHostPortBase)")
}
public static func clusterPort() async throws -> String {
let snapshots = try await ContainerClient().list(
filters: ContainerListFilters(labels: [ResourceLabelKeys.plugin: pluginName])
)
let reserved = Set(snapshots.flatMap { $0.configuration.publishedPorts.map(\.hostPort) })
let port = try findAvailableHostPort(excluding: reserved)
return "\(port):\(clusterContainerPort)"
}
// MARK: - FQDN detection
static func fqdn(for name: String, domain: String?) -> String? {
if name.contains(".") { return name }
guard let domain, !domain.isEmpty else { return nil }
return "\(name).\(domain)"
}
static func detectFQDN(name: String) async -> String? {
let domain = try? await ConfigurationLoader.load().dns.domain
return fqdn(for: name, domain: domain)
}
}
@@ -0,0 +1,111 @@
//===----------------------------------------------------------------------===//
// Copyright © 2026 Apple Inc. and the container project authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//===----------------------------------------------------------------------===//
import ContainerAPIClient
import ContainerResource
import ContainerizationError
import ContainerizationOS
import Foundation
import Logging
extension K8sHelper {
// MARK: - Readiness
public static func runProbe(client: ContainerClient, containerId: String, arguments: [String]) async throws -> Int32 {
let devNull = FileHandle(forWritingAtPath: "/dev/null")
defer { try? devNull?.close() }
let probe = ProcessConfiguration(
executable: kubectlPath,
arguments: arguments,
environment: [kubeconfigEnv],
terminal: false)
let proc = try await client.createProcess(
containerId: containerId,
processId: UUID().uuidString.lowercased(),
configuration: probe,
stdio: [nil, devNull, devNull])
try await proc.start()
return try await proc.wait()
}
public static func waitForNodeBooted(containerId: String, client: ContainerClient, log: Logger) async throws {
let timeout = 120
log.info("Waiting for node to boot", metadata: ["node": "\(containerId)"])
for attempt in 1...timeout {
let result = try await execCapture(
containerId: containerId, executable: "/bin/sh",
arguments: ["-c", "test -S /run/containerd/containerd.sock"], client: client)
if result.code == 0 { return }
if attempt == timeout {
log.info("check container logs with 'container logs \(containerId)'")
throw ContainerizationError(
.timeout,
message: "node \(containerId) did not boot within \(timeout * 2)s: containerd socket not present at /run/containerd/containerd.sock"
)
}
try await Task.sleep(for: .seconds(2))
}
}
static func waitForReady(containerId: String, client: ContainerClient, log: Logger) async throws {
let nodeReadyTimeout = 180
let podReadyTimeout = 300
log.info("Waiting for control-plane node to become ready")
for attempt in 1...nodeReadyTimeout {
let code: Int32
do {
code = try await runProbe(
client: client, containerId: containerId,
arguments: ["wait", "--for=condition=Ready", "node", "--all", "--timeout=2s"])
} catch {
throw ContainerizationError(
.internalError, message: "k8s cluster \(containerId) stopped unexpectedly during startup: \(error)")
}
if code == 0 { break }
if attempt == nodeReadyTimeout {
log.info("inspect node state with 'container exec \(containerId) kubectl get nodes -o wide'")
throw ContainerizationError(
.timeout,
message: "k8s cluster \(containerId) control-plane node did not become Ready within \(nodeReadyTimeout * 2)s"
)
}
try await Task.sleep(for: .seconds(2))
}
log.info("Waiting for kube-system pods to become ready")
for attempt in 1...podReadyTimeout {
let code: Int32
do {
code = try await runProbe(
client: client, containerId: containerId,
arguments: ["wait", "--for=condition=Available", "deployment/coredns", "-n", "kube-system", "--timeout=2s"])
} catch {
throw ContainerizationError(
.internalError, message: "k8s cluster \(containerId) stopped unexpectedly during startup: \(error)")
}
if code == 0 { return }
if attempt < podReadyTimeout {
try await Task.sleep(for: .seconds(2))
}
}
log.info("inspect pod state with 'container exec \(containerId) kubectl get pods -n kube-system'")
throw ContainerizationError(
.timeout,
message: "k8s cluster \(containerId) kube-system pods did not become available within \(podReadyTimeout * 2)s"
)
}
}
@@ -0,0 +1,65 @@
//===----------------------------------------------------------------------===//
// Copyright © 2026 Apple Inc. and the container project authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//===----------------------------------------------------------------------===//
import Foundation
// MARK: - ListDisplayable
protocol ListDisplayable {
static var tableHeader: [String] { get }
var tableRow: [String] { get }
var quietValue: String { get }
}
// MARK: - TableOutput
struct TableOutput: Sendable {
private let rows: [[String]]
private let spacing: Int
init(rows: [[String]], spacing: Int = 2) {
self.rows = rows
self.spacing = spacing
}
func format() -> String {
var output = ""
let maxLengths = self.maxLength()
for rowIndex in 0..<self.rows.count {
let row = self.rows[rowIndex]
for columnIndex in 0..<row.count - 1 {
let currentLength = (maxLengths[columnIndex] ?? 0) + self.spacing
let padded = row[columnIndex].padding(toLength: currentLength, withPad: " ", startingAt: 0)
output += padded
}
output += row.last ?? ""
output += (rowIndex == self.rows.count - 1) ? "" : "\n"
}
return output
}
private func maxLength() -> [Int: Int] {
var output: [Int: Int] = [:]
for row in self.rows {
for (i, column) in row.enumerated() {
let currentMax = output[i] ?? 0
output[i] = (column.count > currentMax) ? column.count : currentMax
}
}
return output
}
}
@@ -26,7 +26,6 @@ import ContainerizationError
import ContainerizationExtras
import Foundation
import Logging
import SystemPackage
enum Variant: String, ExpressibleByArgument {
case reserved
@@ -24,7 +24,6 @@ import ContainerXPC
import Foundation
import Logging
import NIO
import SystemPackage
extension RuntimeLinuxHelper {
struct Start: AsyncParsableCommand {
@@ -22,15 +22,12 @@ import SystemPackage
extension Utility {
public static func createPluginLoader(log: Logger) async throws -> PluginLoader {
let installRootPath = CommandLine.executablePath
.removingLastComponent()
.removingLastComponent()
let health = try await ClientHealthCheck.ping(timeout: .seconds(10))
// TODO: Remove when we convert PluginLoader to FilePath.
let installRootURL = URL(fileURLWithPath: installRootPath.string)
let pluginsURL = PluginLoader.userPluginsDir(installRoot: installRootURL)
let installRootPath = FilePath(health.installRoot.path(percentEncoded: false))
let userPluginsURL = PluginLoader.userPluginsDir(installRoot: health.installRoot)
var directoryExists: ObjCBool = false
_ = FileManager.default.fileExists(atPath: pluginsURL.path, isDirectory: &directoryExists)
let userPluginsURL = directoryExists.boolValue ? pluginsURL : nil
_ = FileManager.default.fileExists(atPath: userPluginsURL.path, isDirectory: &directoryExists)
// plugins built into the application installed as a macOS app bundle
let appBundlePluginsURL = Bundle.main.resourceURL?.appending(path: "plugins")
@@ -43,7 +40,7 @@ extension Utility {
.appending(FilePath.Component("plugins"))
let installRootPluginsURL = URL(fileURLWithPath: installRootPluginsPath.string)
let pluginDirectories = [
userPluginsURL,
directoryExists.boolValue ? userPluginsURL : nil,
appBundlePluginsURL,
installRootPluginsURL,
].compactMap { $0 }
@@ -0,0 +1,41 @@
//===----------------------------------------------------------------------===//
// Copyright © 2026 Apple Inc. and the container project authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//===----------------------------------------------------------------------===//
import ContainerTestSupport
import Foundation
extension ContainerFixture {
func dumpNodeDiagnostics(node: String) {
print("=== NODE DIAGNOSTICS [\(node)] ===")
let cmds: [(label: String, args: [String])] = [
("ip-link", ["ip", "link", "show"]),
("iptables-mss", ["iptables", "-t", "mangle", "-L", "-n", "-v"]),
("containerd", ["systemctl", "status", "containerd", "--no-pager", "-l"]),
("kubelet-log", ["journalctl", "-u", "kubelet", "--no-pager", "-n", "60"]),
("crictl-images", ["crictl", "images"]),
]
for (label, args) in cmds {
if let r = try? self.run(["exec", node] + args) {
let out = r.output.trimmingCharacters(in: .whitespacesAndNewlines)
let err = r.error.trimmingCharacters(in: .whitespacesAndNewlines)
print("[\(label)] exit=\(r.status)")
if !out.isEmpty { print(out) }
if !err.isEmpty { print("stderr: \(err)") }
}
}
print("=== END NODE DIAGNOSTICS ===")
}
}
@@ -23,27 +23,6 @@ struct TestK8sLoadImageSerial {
private static let testImage = WarmupImage.alpine320.rawValue
private func dumpNodeDiagnostics(_ f: ContainerFixture, node: String) {
print("=== NODE DIAGNOSTICS [\(node)] ===")
let cmds: [(label: String, args: [String])] = [
("ip-link", ["ip", "link", "show"]),
("iptables-mss", ["iptables", "-t", "mangle", "-L", "-n", "-v"]),
("containerd", ["systemctl", "status", "containerd", "--no-pager", "-l"]),
("kubelet-log", ["journalctl", "-u", "kubelet", "--no-pager", "-n", "60"]),
("crictl-images", ["crictl", "images"]),
]
for (label, args) in cmds {
if let r = try? f.run(["exec", node] + args) {
let out = r.output.trimmingCharacters(in: .whitespacesAndNewlines)
let err = r.error.trimmingCharacters(in: .whitespacesAndNewlines)
print("[\(label)] exit=\(r.status)")
if !out.isEmpty { print(out) }
if !err.isEmpty { print("stderr: \(err)") }
}
}
print("=== END NODE DIAGNOSTICS ===")
}
private func imageExistsInNode(_ f: ContainerFixture, node: String, image: String) throws -> Bool {
print("[k8s-load] ctr images list (node: \(node), checking: \(image))")
let result = try f.run(["exec", node, "ctr", "--namespace", "k8s.io", "images", "list"])
@@ -81,7 +60,7 @@ struct TestK8sLoadImageSerial {
if result.status != 0 {
print("[k8s-load] k8s create stderr: \(result.error)")
dumpEnv(f, clusterName: name)
dumpNodeDiagnostics(f, node: name)
f.dumpNodeDiagnostics(node: name)
}
try result.check()
@@ -21,28 +21,7 @@ import Testing
@Suite(.serialized)
struct TestK8sNetworkingSerial {
private static let testImage = WarmupImage.alpine320.rawValue
private func dumpNodeDiagnostics(_ f: ContainerFixture, node: String) {
print("=== NODE DIAGNOSTICS [\(node)] ===")
let cmds: [(label: String, args: [String])] = [
("ip-link", ["ip", "link", "show"]),
("iptables-mss", ["iptables", "-t", "mangle", "-L", "-n", "-v"]),
("containerd", ["systemctl", "status", "containerd", "--no-pager", "-l"]),
("kubelet-log", ["journalctl", "-u", "kubelet", "--no-pager", "-n", "60"]),
("crictl-images", ["crictl", "images"]),
]
for (label, args) in cmds {
if let r = try? f.run(["exec", node] + args) {
let out = r.output.trimmingCharacters(in: .whitespacesAndNewlines)
let err = r.error.trimmingCharacters(in: .whitespacesAndNewlines)
print("[\(label)] exit=\(r.status)")
if !out.isEmpty { print(out) }
if !err.isEmpty { print("stderr: \(err)") }
}
}
print("=== END NODE DIAGNOSTICS ===")
}
private static let testImage = WarmupImage.alpine320
private func dumpEnv(_ f: ContainerFixture, clusterName: String) {
print("=== ENV DUMP [\(clusterName)] ===")
@@ -72,19 +51,19 @@ struct TestK8sNetworkingSerial {
return (result.output, result.status)
}
private func waitForPod(_ f: ContainerFixture, node: String, podName: String, timeout: Int = 300) throws {
print("[k8s-net] waitForPod \(podName) on \(node) (timeout=\(timeout)s)")
private func waitForPod(_ f: ContainerFixture, node: String, podName: String, timeoutSeconds: Int) throws {
print("[k8s-net] waitForPod \(podName) on \(node) (timeout=\(timeoutSeconds)s)")
let (_, status) = try kubectl(
f, node: node,
args: [
"wait", "--for=condition=Ready", "pod/\(podName)", "--timeout=\(timeout)s",
"wait", "--for=condition=Ready", "pod/\(podName)", "--timeout=\(timeoutSeconds)s",
])
guard status == 0 else {
let (podStatus, _) = try kubectl(f, node: node, args: ["get", "pod", podName, "--no-headers"])
print("[k8s-net] pod \(podName) status: \(podStatus.trimmingCharacters(in: .whitespacesAndNewlines))")
let (podDesc, _) = try kubectl(f, node: node, args: ["describe", "pod", podName])
print("[k8s-net] pod \(podName) describe:\n\(podDesc.prefix(1000))")
throw CommandError.executionFailed("pod \(podName) did not become ready within \(timeout)s")
throw CommandError.executionFailed("pod \(podName) did not become ready within \(timeoutSeconds)s")
}
print("[k8s-net] pod \(podName) is Ready")
}
@@ -102,15 +81,15 @@ struct TestK8sNetworkingSerial {
if result.status != 0 {
print("[k8s-net] k8s create stderr: \(result.error)")
dumpEnv(f, clusterName: name)
dumpNodeDiagnostics(f, node: name)
f.dumpNodeDiagnostics(node: name)
}
try result.check()
print("[k8s-net] pulling \(Self.testImage)")
try f.restoreWarmupImage(.alpine320)
print("[k8s-net] pulling \(Self.testImage.rawValue)")
try f.restoreWarmupImage(Self.testImage)
print("[k8s-net] k8s load-image --name \(name) \(Self.testImage)")
let loadResult = try f.run(["k8s", "load-image", "--name", name, Self.testImage])
print("[k8s-net] k8s load-image --name \(name) \(Self.testImage.rawValue)")
let loadResult = try f.run(["k8s", "load-image", "--name", name, Self.testImage.rawValue])
print("[k8s-net] k8s load-image exit=\(loadResult.status)")
if loadResult.status != 0 { print("[k8s-net] k8s load-image stderr: \(loadResult.error)") }
#expect(loadResult.status == 0)
@@ -119,14 +98,14 @@ struct TestK8sNetworkingSerial {
f, node: name,
args: [
"run", "test-pod",
"--image=\(Self.testImage)",
"--image=\(Self.testImage.rawValue)",
"--image-pull-policy=Never",
"--restart=Never",
"--", "sleep", "300",
])
#expect(createStatus == 0)
try waitForPod(f, node: name, podName: "test-pod")
try waitForPod(f, node: name, podName: "test-pod", timeoutSeconds: 300)
let (output, execStatus) = try kubectl(
f, node: name,
@@ -154,11 +133,11 @@ struct TestK8sNetworkingSerial {
}
try result.check()
print("[k8s-net] pulling \(Self.testImage)")
try f.restoreWarmupImage(.alpine320)
print("[k8s-net] pulling \(Self.testImage.rawValue)")
try f.restoreWarmupImage(Self.testImage)
print("[k8s-net] k8s load-image --name \(name) \(Self.testImage)")
let loadResult = try f.run(["k8s", "load-image", "--name", name, Self.testImage])
print("[k8s-net] k8s load-image --name \(name) \(Self.testImage.rawValue)")
let loadResult = try f.run(["k8s", "load-image", "--name", name, Self.testImage.rawValue])
print("[k8s-net] k8s load-image exit=\(loadResult.status)")
if loadResult.status != 0 { print("[k8s-net] k8s load-image stderr: \(loadResult.error)") }
#expect(loadResult.status == 0)
@@ -168,7 +147,7 @@ struct TestK8sNetworkingSerial {
f, node: name,
args: [
"run", "server",
"--image=\(Self.testImage)",
"--image=\(Self.testImage.rawValue)",
"--image-pull-policy=Never",
"--restart=Never",
"--port=8080",
@@ -176,7 +155,7 @@ struct TestK8sNetworkingSerial {
"while true; do printf 'HTTP/1.1 200 OK\\r\\nContent-Length: 2\\r\\nConnection: close\\r\\n\\r\\nok' | nc -l -p 8080; done",
])
#expect(serverStatus == 0)
try waitForPod(f, node: name, podName: "server")
try waitForPod(f, node: name, podName: "server", timeoutSeconds: 300)
// Expose server as a ClusterIP service.
let (_, exposeStatus) = try kubectl(
@@ -191,13 +170,13 @@ struct TestK8sNetworkingSerial {
f, node: name,
args: [
"run", "client",
"--image=\(Self.testImage)",
"--image=\(Self.testImage.rawValue)",
"--image-pull-policy=Never",
"--restart=Never",
"--", "sleep", "300",
])
#expect(clientStatus == 0)
try waitForPod(f, node: name, podName: "client")
try waitForPod(f, node: name, podName: "client", timeoutSeconds: 300)
// Reach server via the service DNS name exercises CoreDNS + kube-proxy.
print("[k8s-net] wget from client to server-svc:8080")
@@ -23,27 +23,6 @@ import Yams
@Suite(.serialized)
struct TestK8sRunSerial {
private func dumpNodeDiagnostics(_ f: ContainerFixture, node: String) {
print("=== NODE DIAGNOSTICS [\(node)] ===")
let cmds: [(label: String, args: [String])] = [
("ip-link", ["ip", "link", "show"]),
("iptables-mss", ["iptables", "-t", "mangle", "-L", "-n", "-v"]),
("containerd", ["systemctl", "status", "containerd", "--no-pager", "-l"]),
("kubelet-log", ["journalctl", "-u", "kubelet", "--no-pager", "-n", "60"]),
("crictl-images", ["crictl", "images"]),
]
for (label, args) in cmds {
if let r = try? f.run(["exec", node] + args) {
let out = r.output.trimmingCharacters(in: .whitespacesAndNewlines)
let err = r.error.trimmingCharacters(in: .whitespacesAndNewlines)
print("[\(label)] exit=\(r.status)")
if !out.isEmpty { print(out) }
if !err.isEmpty { print("stderr: \(err)") }
}
}
print("=== END NODE DIAGNOSTICS ===")
}
private func loadKubeconfig() throws -> [String: Any] {
let path = FilePath(FileManager.default.homeDirectoryForCurrentUser.path)
.appending(".kube")
@@ -76,7 +55,7 @@ struct TestK8sRunSerial {
print("[k8s-run] k8s create exit=\(result.status)")
if result.status != 0 {
print("[k8s-run] k8s create stderr: \(result.error)")
dumpNodeDiagnostics(f, node: name)
f.dumpNodeDiagnostics(node: name)
}
try result.check()
#expect(result.output.contains(name))
@@ -111,7 +90,7 @@ struct TestK8sRunSerial {
print("[k8s-run] k8s create exit=\(result1.status)")
if result1.status != 0 {
print("[k8s-run] k8s create stderr: \(result1.error)")
dumpNodeDiagnostics(f, node: name1)
f.dumpNodeDiagnostics(node: name1)
}
#expect(result1.status == 0)
@@ -120,7 +99,7 @@ struct TestK8sRunSerial {
print("[k8s-run] k8s create exit=\(result2.status)")
if result2.status != 0 {
print("[k8s-run] k8s create stderr: \(result2.error)")
dumpNodeDiagnostics(f, node: name2)
f.dumpNodeDiagnostics(node: name2)
}
#expect(result2.status == 0)
@@ -23,27 +23,6 @@ import Yams
@Suite(.serialized)
struct TestK8sWriteConfigSerial {
private func dumpNodeDiagnostics(_ f: ContainerFixture, node: String) {
print("=== NODE DIAGNOSTICS [\(node)] ===")
let cmds: [(label: String, args: [String])] = [
("ip-link", ["ip", "link", "show"]),
("iptables-mss", ["iptables", "-t", "mangle", "-L", "-n", "-v"]),
("containerd", ["systemctl", "status", "containerd", "--no-pager", "-l"]),
("kubelet-log", ["journalctl", "-u", "kubelet", "--no-pager", "-n", "60"]),
("crictl-images", ["crictl", "images"]),
]
for (label, args) in cmds {
if let r = try? f.run(["exec", node] + args) {
let out = r.output.trimmingCharacters(in: .whitespacesAndNewlines)
let err = r.error.trimmingCharacters(in: .whitespacesAndNewlines)
print("[\(label)] exit=\(r.status)")
if !out.isEmpty { print(out) }
if !err.isEmpty { print("stderr: \(err)") }
}
}
print("=== END NODE DIAGNOSTICS ===")
}
private func kubeconfigPath() -> FilePath {
FilePath(FileManager.default.homeDirectoryForCurrentUser.path)
.appending(".kube")
@@ -106,7 +85,7 @@ struct TestK8sWriteConfigSerial {
if result.status != 0 {
print("[k8s-cfg] k8s create stderr: \(result.error)")
dumpEnv(f, clusterName: name)
dumpNodeDiagnostics(f, node: name)
f.dumpNodeDiagnostics(node: name)
}
try result.check()
@@ -144,7 +123,7 @@ struct TestK8sWriteConfigSerial {
if result.status != 0 {
print("[k8s-cfg] k8s create stderr: \(result.error)")
dumpEnv(f, clusterName: name)
dumpNodeDiagnostics(f, node: name)
f.dumpNodeDiagnostics(node: name)
}
try result.check()
@@ -174,7 +153,7 @@ struct TestK8sWriteConfigSerial {
if result.status != 0 {
print("[k8s-cfg] k8s create stderr: \(result.error)")
dumpEnv(f, clusterName: name)
dumpNodeDiagnostics(f, node: name)
f.dumpNodeDiagnostics(node: name)
}
try result.check()