106 lines
3.5 KiB
Go
106 lines
3.5 KiB
Go
/*
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Copyright 2017 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package integration
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import (
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"testing"
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"github.com/containerd/cgroups"
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runtimespec "github.com/opencontainers/runtime-spec/specs-go"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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"golang.org/x/net/context"
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runtime "k8s.io/kubernetes/pkg/kubelet/apis/cri/runtime/v1alpha2"
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)
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func checkMemoryLimit(t *testing.T, spec *runtimespec.Spec, memLimit int64) {
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require.NotNil(t, spec)
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require.NotNil(t, spec.Linux)
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require.NotNil(t, spec.Linux.Resources)
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require.NotNil(t, spec.Linux.Resources.Memory)
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require.NotNil(t, spec.Linux.Resources.Memory.Limit)
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assert.Equal(t, memLimit, *spec.Linux.Resources.Memory.Limit)
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}
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func TestUpdateContainerResources(t *testing.T) {
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t.Log("Create a sandbox")
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sbConfig := PodSandboxConfig("sandbox", "update-container-resources")
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sb, err := runtimeService.RunPodSandbox(sbConfig, *runtimeHandler)
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require.NoError(t, err)
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defer func() {
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assert.NoError(t, runtimeService.StopPodSandbox(sb))
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assert.NoError(t, runtimeService.RemovePodSandbox(sb))
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}()
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t.Log("Create a container with memory limit")
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cnConfig := ContainerConfig(
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"container",
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pauseImage,
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WithResources(&runtime.LinuxContainerResources{
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MemoryLimitInBytes: 2 * 1024 * 1024,
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}),
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)
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cn, err := runtimeService.CreateContainer(sb, cnConfig, sbConfig)
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require.NoError(t, err)
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t.Log("Check memory limit in container OCI spec")
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container, err := containerdClient.LoadContainer(context.Background(), cn)
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require.NoError(t, err)
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spec, err := container.Spec(context.Background())
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require.NoError(t, err)
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checkMemoryLimit(t, spec, 2*1024*1024)
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t.Log("Update container memory limit after created")
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err = runtimeService.UpdateContainerResources(cn, &runtime.LinuxContainerResources{
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MemoryLimitInBytes: 4 * 1024 * 1024,
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})
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require.NoError(t, err)
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t.Log("Check memory limit in container OCI spec")
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spec, err = container.Spec(context.Background())
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require.NoError(t, err)
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checkMemoryLimit(t, spec, 4*1024*1024)
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t.Log("Start the container")
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require.NoError(t, runtimeService.StartContainer(cn))
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task, err := container.Task(context.Background(), nil)
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require.NoError(t, err)
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t.Log("Check memory limit in cgroup")
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cgroup, err := cgroups.Load(cgroups.V1, cgroups.PidPath(int(task.Pid())))
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require.NoError(t, err)
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stat, err := cgroup.Stat(cgroups.IgnoreNotExist)
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require.NoError(t, err)
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assert.Equal(t, uint64(4*1024*1024), stat.Memory.Usage.Limit)
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t.Log("Update container memory limit after started")
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err = runtimeService.UpdateContainerResources(cn, &runtime.LinuxContainerResources{
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MemoryLimitInBytes: 8 * 1024 * 1024,
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})
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require.NoError(t, err)
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t.Log("Check memory limit in container OCI spec")
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spec, err = container.Spec(context.Background())
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require.NoError(t, err)
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checkMemoryLimit(t, spec, 8*1024*1024)
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t.Log("Check memory limit in cgroup")
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stat, err = cgroup.Stat(cgroups.IgnoreNotExist)
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require.NoError(t, err)
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assert.Equal(t, uint64(8*1024*1024), stat.Memory.Usage.Limit)
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}
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