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package integration
import (
"fmt"
"os"
"path/filepath"
"strings"
. "github.com/containers/podman/v4/test/utils"
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
. "github.com/onsi/gomega/gexec"
)
var _ = Describe("Podman systemd", func() {
var (
tempdir string
err error
podmanTest *PodmanTestIntegration
systemdUnitFile string
)
BeforeEach(func() {
tempdir, err = CreateTempDirInTempDir()
if err != nil {
os.Exit(1)
}
podmanTest = PodmanTestCreate(tempdir)
podmanTest.Setup()
systemdUnitFile = `[Unit]
Description=redis container
[Service]
Restart=always
ExecStart=/usr/bin/podman start -a redis
ExecStop=/usr/bin/podman stop -t 10 redis
KillMode=process
[Install]
WantedBy=default.target
`
})
AfterEach(func() {
podmanTest.Cleanup()
f := CurrentGinkgoTestDescription()
processTestResult(f)
})
It("podman start container by systemd", func() {
SkipIfRootless("rootless can not write to /etc")
SkipIfContainerized("test does not have systemd as pid 1")
sysFile := os.WriteFile("/etc/systemd/system/redis.service", []byte(systemdUnitFile), 0644)
Expect(sysFile).To(BeNil())
defer func() {
stop := SystemExec("bash", []string{"-c", "systemctl stop redis"})
os.Remove("/etc/systemd/system/redis.service")
SystemExec("bash", []string{"-c", "systemctl daemon-reload"})
Expect(stop).Should(Exit(0))
}()
create := podmanTest.Podman([]string{"create", "--name", "redis", REDIS_IMAGE})
create.WaitWithDefaultTimeout()
Expect(create).Should(Exit(0))
enable := SystemExec("bash", []string{"-c", "systemctl daemon-reload"})
Expect(enable).Should(Exit(0))
start := SystemExec("bash", []string{"-c", "systemctl start redis"})
Expect(start).Should(Exit(0))
logs := SystemExec("bash", []string{"-c", "journalctl -n 20 -u redis"})
Expect(logs).Should(Exit(0))
status := SystemExec("bash", []string{"-c", "systemctl status redis"})
Expect(status.OutputToString()).To(ContainSubstring("active (running)"))
})
It("podman run container with systemd PID1", func() {
ctrName := "testSystemd"
run := podmanTest.Podman([]string{"run", "--name", ctrName, "-t", "-i", "-d", UBI_INIT, "/sbin/init"})
run.WaitWithDefaultTimeout()
Expect(run).Should(Exit(0))
logs := podmanTest.Podman([]string{"logs", ctrName})
logs.WaitWithDefaultTimeout()
Expect(logs).Should(Exit(0))
// Give container 10 seconds to start
started := podmanTest.WaitContainerReady(ctrName, "Reached target Multi-User System.", 30, 1)
Expect(started).To(BeTrue())
systemctl := podmanTest.Podman([]string{"exec", "-t", "-i", ctrName, "systemctl", "status", "--no-pager"})
systemctl.WaitWithDefaultTimeout()
Expect(systemctl).Should(Exit(0))
Expect(systemctl.OutputToString()).To(ContainSubstring("State:"))
result := podmanTest.Podman([]string{"inspect", ctrName})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(0))
conData := result.InspectContainerToJSON()
Expect(conData).To(HaveLen(1))
Expect(conData[0].Config.SystemdMode).To(BeTrue())
// stats not supported w/ CGv1 rootless or containerized
if isCgroupsV1() && (isRootless() || isContainerized()) {
return
}
stats := podmanTest.Podman([]string{"stats", "--no-stream", ctrName})
stats.WaitWithDefaultTimeout()
Expect(stats).Should(Exit(0))
cgroupPath := podmanTest.Podman([]string{"inspect", "--format='{{.State.CgroupPath}}'", ctrName})
cgroupPath.WaitWithDefaultTimeout()
Expect(cgroupPath).Should(Exit(0))
Expect(result.OutputToString()).To(Not(ContainSubstring("init.scope")))
})
It("podman create container with systemd entrypoint triggers systemd mode", func() {
ctrName := "testCtr"
run := podmanTest.Podman([]string{"create", "--name", ctrName, "--entrypoint", "/sbin/init", UBI_INIT})
run.WaitWithDefaultTimeout()
Expect(run).Should(Exit(0))
result := podmanTest.Podman([]string{"inspect", ctrName})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(0))
conData := result.InspectContainerToJSON()
Expect(conData).To(HaveLen(1))
Expect(conData[0].Config.SystemdMode).To(BeTrue())
})
It("podman systemd in command triggers systemd mode", func() {
containerfile := fmt.Sprintf(`FROM %s
RUN mkdir -p /usr/lib/systemd/; touch /usr/lib/systemd/systemd
CMD /usr/lib/systemd/systemd`, ALPINE)
containerfilePath := filepath.Join(podmanTest.TempDir, "Containerfile")
err := os.WriteFile(containerfilePath, []byte(containerfile), 0755)
Expect(err).To(BeNil())
session := podmanTest.Podman([]string{"build", "-t", "systemd", "--file", containerfilePath, podmanTest.TempDir})
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
ctrName := "testCtr"
run := podmanTest.Podman([]string{"create", "--name", ctrName, "systemd"})
run.WaitWithDefaultTimeout()
Expect(run).Should(Exit(0))
result := podmanTest.Podman([]string{"inspect", ctrName})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(0))
conData := result.InspectContainerToJSON()
Expect(conData).To(HaveLen(1))
Expect(conData[0].Config.SystemdMode).To(BeTrue())
})
It("podman create container with --uidmap and conmon PidFile accessible", func() {
ctrName := "testCtrUidMap"
run := podmanTest.Podman([]string{"run", "-d", "--uidmap=0:1:1000", "--name", ctrName, ALPINE, "top"})
run.WaitWithDefaultTimeout()
Expect(run).Should(Exit(0))
session := podmanTest.Podman([]string{"inspect", "--format", "{{.ConmonPidFile}}", ctrName})
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
pidFile := strings.TrimSuffix(session.OutputToString(), "\n")
_, err := os.ReadFile(pidFile)
Expect(err).To(BeNil())
})
It("podman create container with systemd=always triggers systemd mode", func() {
ctrName := "testCtr"
run := podmanTest.Podman([]string{"create", "--name", ctrName, "--systemd", "always", ALPINE})
run.WaitWithDefaultTimeout()
Expect(run).Should(Exit(0))
result := podmanTest.Podman([]string{"inspect", ctrName})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(0))
conData := result.InspectContainerToJSON()
Expect(conData).To(HaveLen(1))
Expect(conData[0].Config.SystemdMode).To(BeTrue())
})
It("podman run --systemd container should NOT mount /run noexec", func() {
session := podmanTest.Podman([]string{"run", "--systemd", "always", ALPINE, "sh", "-c", "mount | grep \"/run \""})
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
Expect(session.OutputToString()).To(Not(ContainSubstring("noexec")))
})
It("podman run --systemd arg is case insensitive", func() {
session := podmanTest.Podman([]string{"run", "--rm", "--systemd", "Always", ALPINE, "echo", "test"})
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
Expect(session.OutputToString()).Should(Equal("test"))
session = podmanTest.Podman([]string{"run", "--rm", "--systemd", "True", ALPINE, "echo", "test"})
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
Expect(session.OutputToString()).Should(Equal("test"))
session = podmanTest.Podman([]string{"run", "--rm", "--systemd", "False", ALPINE, "echo", "test"})
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
Expect(session.OutputToString()).Should(Equal("test"))
})
})
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