Files
containerd/integration/oom_linux_test.go
Wei Fu cbb1b13a81 cri-integration: add stress test for TestOOMEventMonitor
The test was validated locally by running 100 pods for 100 rounds without
observing any failures. Due to limited resources in the CI environment,
the test parameters were reduced to 8 pods and 10 rounds.

```bash
FOCUS=TestOOMEventMonitor CGROUP_DRIVER=cgroupfs taskset -c 0,1 make cri-integration | tee /tmp/log
```

Signed-off-by: Wei Fu <fuweid89@gmail.com>
2026-01-06 20:44:04 -05:00

142 lines
3.5 KiB
Go

/*
Copyright The containerd 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
http://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.
*/
package integration
import (
"fmt"
"os"
"path/filepath"
"sync"
"syscall"
"testing"
"time"
"github.com/containerd/containerd/v2/integration/images"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
criruntime "k8s.io/cri-api/pkg/apis/runtime/v1"
runtimeapi "k8s.io/cri-api/pkg/apis/runtime/v1"
)
func TestOOMEventMonitor(t *testing.T) {
workDir := t.TempDir()
rawCfg := fmt.Sprintf(`
version = 3
[plugins.'io.containerd.cri.v1.runtime'.containerd.runtimes.runc]
runtime_type = "io.containerd.runc.v2"
runtime_path = "%s/containerd-shim-runc-v2"
`, *buildDir)
err := os.WriteFile(
filepath.Join(workDir, "config.toml"),
[]byte(rawCfg),
0600,
)
require.NoError(t, err, "failed to create config")
ctrd := newCtrdProc(t, filepath.Join(*buildDir, "containerd"), workDir, []string{})
logPath := ctrd.logPath()
t.Cleanup(func() {
if t.Failed() {
dumpFileContent(t, logPath)
}
})
require.NoError(t, ctrd.isReady())
var busyboxImage = images.Get(images.BusyBox)
pullImagesByCRI(t, ctrd.criImageService(t), busyboxImage)
n := 8
podCtxs := []*podTCtx{}
defer func() {
for _, p := range podCtxs {
p.stop(true)
}
assert.NoError(t, ctrd.kill(syscall.SIGTERM))
assert.NoError(t, ctrd.wait(5*time.Minute))
}()
t.Logf("Creating %d pod sandboxes", n)
for i := 0; i < n; i++ {
podCtx := newPodTCtx(t,
ctrd.criRuntimeService(t),
fmt.Sprintf("test-oom-event-%d", i),
"sandbox",
WithHostNetwork)
podCtxs = append(podCtxs, podCtx)
}
for round := range 10 {
if t.Failed() {
break
}
t.Logf("Creating %d running container and wait for them OOMKilled", n)
var wg sync.WaitGroup
for _, podCtx := range podCtxs {
wg.Add(1)
go func() {
defer wg.Done()
cntrID := podCtx.createContainer(fmt.Sprintf("round-%d-running", round), busyboxImage,
criruntime.ContainerState_CONTAINER_RUNNING,
WithCommand(
"sh",
"-c",
"dd if=/dev/zero of=/dev/null bs=20M",
),
WithResources(
&runtimeapi.LinuxContainerResources{
MemoryLimitInBytes: 15 * 1024 * 1024,
MemorySwapLimitInBytes: 15 * 1024 * 1024,
},
),
)
assert.NoError(t, Eventually(func() (bool, error) {
status, err := ctrd.criRuntimeService(t).ContainerStatus(cntrID)
if err != nil {
return false, err
}
state := status.GetState()
if state != criruntime.ContainerState_CONTAINER_EXITED {
return false, nil
}
if code := status.GetExitCode(); int(code) != 137 {
return false, fmt.Errorf("expected 137 but got %d", code)
}
if reason := status.GetReason(); reason != "OOMKilled" {
return false, fmt.Errorf("expected OOMKilled but got %s", reason)
}
return true, nil
}, time.Second, 90*time.Second), "wait for container %s to exit", cntrID)
assert.NoError(t, ctrd.criRuntimeService(t).RemoveContainer(cntrID), "failed to remove container %s", cntrID)
}()
}
wg.Wait()
}
}