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containerruntime.go
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/
containerruntime.go
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// SPDX-FileCopyrightText: 2024 SAP SE or an SAP affiliate company and Gardener contributors
//
// SPDX-License-Identifier: Apache-2.0
package operations
import (
"context"
"fmt"
. "github.com/onsi/ginkgo/v2"
. "github.com/onsi/gomega"
gardencorev1beta1 "github.com/gardener/gardener/pkg/apis/core/v1beta1"
v1beta1helper "github.com/gardener/gardener/pkg/apis/core/v1beta1/helper"
extensionsv1alpha1 "github.com/gardener/gardener/pkg/apis/extensions/v1alpha1"
"github.com/gardener/gardener/pkg/utils"
"github.com/gardener/gardener/test/framework"
)
var _ = Describe("Shoot container runtime testing", func() {
f := framework.NewShootFramework(nil)
f.Default().Serial().CIt("should add worker pool with containerd", func(ctx context.Context) {
var (
shoot = f.Shoot
worker = shoot.Spec.Provider.Workers[0]
workerImage = worker.Machine.Image
)
if v1beta1helper.IsWorkerless(shoot) {
Skip("at least one worker pool is required in the test shoot")
}
if !supportsContainerD(f.CloudProfile.Spec.MachineImages, workerImage) {
message := fmt.Sprintf("machine image '%s@%s' does not support containerd", workerImage.Name, *workerImage.Version)
Skip(message)
}
containerdWorker := worker.DeepCopy()
allowedCharacters := "0123456789abcdefghijklmnopqrstuvwxyz"
id, err := utils.GenerateRandomStringFromCharset(3, allowedCharacters)
framework.ExpectNoError(err)
containerdWorker.Name = "test-" + id
containerdWorker.Maximum = 1
containerdWorker.Minimum = 1
containerdWorker.CRI = &gardencorev1beta1.CRI{
Name: gardencorev1beta1.CRINameContainerD,
ContainerRuntimes: nil,
}
shoot.Spec.Provider.Workers = append(shoot.Spec.Provider.Workers, *containerdWorker)
By("Add containerd worker pool")
defer func(ctx context.Context, workerPoolName string) {
By("Remove containerd worker pool after test execution")
err := f.UpdateShoot(ctx, func(s *gardencorev1beta1.Shoot) error {
var workers []gardencorev1beta1.Worker
for _, current := range s.Spec.Provider.Workers {
if current.Name == workerPoolName {
continue
}
workers = append(workers, current)
}
s.Spec.Provider.Workers = workers
return nil
})
framework.ExpectNoError(err)
}(ctx, containerdWorker.Name)
err = f.UpdateShoot(ctx, func(s *gardencorev1beta1.Shoot) error {
s.Spec.Provider.Workers = shoot.Spec.Provider.Workers
return nil
})
framework.ExpectNoError(err)
// check the node labels of the worker pool to contain containerd label
nodeList, err := framework.GetAllNodesInWorkerPool(ctx, f.ShootClient, &containerdWorker.Name)
framework.ExpectNoError(err)
Expect(nodeList.Items).To(HaveLen(int(containerdWorker.Minimum)))
for _, node := range nodeList.Items {
value, found := node.Labels[extensionsv1alpha1.CRINameWorkerLabel]
Expect(found).To(BeTrue())
Expect(value).To(Equal(string(extensionsv1alpha1.CRINameContainerD)))
}
// deploy root pod
rootPodExecutor := framework.NewRootPodExecutor(f.Logger, f.ShootClient, &nodeList.Items[0].Name, "kube-system")
// check the configuration on the host
initializerServiceCommand := fmt.Sprintf("systemctl is-active %s", "containerd-initializer")
executeCommand(ctx, rootPodExecutor, initializerServiceCommand, "active")
containerdServiceCommand := fmt.Sprintf("systemctl is-active %s", "containerd")
executeCommand(ctx, rootPodExecutor, containerdServiceCommand, "active")
// check that config.toml is configured
checkConfigurationCommand := "cat /etc/systemd/system/containerd.service.d/11-exec_config.conf | grep 'usr/bin/containerd --config=/etc/containerd/config.toml' | echo $?"
executeCommand(ctx, rootPodExecutor, checkConfigurationCommand, "0")
// check that config.toml exists
checkConfigCommand := "[ -f /etc/containerd/config.toml ] && echo 'found' || echo 'Not found'"
executeCommand(ctx, rootPodExecutor, checkConfigCommand, "found")
}, scaleWorkerTimeout)
})
// executeCommand executes a command on the host and checks the returned result
func executeCommand(ctx context.Context, rootPodExecutor framework.RootPodExecutor, command, expected string) {
response, err := rootPodExecutor.Execute(ctx, command)
framework.ExpectNoError(err)
Expect(response).ToNot(BeNil())
Expect(string(response)).To(Equal(fmt.Sprintf("%s\n", expected)))
}
func supportsContainerD(cloudProfileImages []gardencorev1beta1.MachineImage, workerImage *gardencorev1beta1.ShootMachineImage) bool {
var (
cloudProfileImage *gardencorev1beta1.MachineImage
machineVersion *gardencorev1beta1.MachineImageVersion
)
for _, c := range cloudProfileImages {
current := c
if current.Name == workerImage.Name {
cloudProfileImage = ¤t
break
}
}
if cloudProfileImage == nil {
return false
}
for _, v := range cloudProfileImage.Versions {
version := v
if version.Version == *workerImage.Version {
machineVersion = &version
break
}
}
if machineVersion == nil {
return false
}
for _, cri := range machineVersion.CRI {
if cri.Name == gardencorev1beta1.CRINameContainerD {
return true
}
}
return false
}