From 36f5968b45eefff9382eb64bb8578760d626af65 Mon Sep 17 00:00:00 2001 From: Paul Holzinger Date: Sun, 28 Mar 2021 16:26:31 +0200 Subject: [PATCH] podman generate systemd --new do not duplicate params podman generate systemd --new inserts extra idfile arguments. The generated unit can break when the user did provide their own idfile arguments as they overwrite the arguments added by generate systemd. This also happens when a user tries to generate the systemd unit on a container already create with a --new unit. This should now create a identical unit. The solution is to remove all user provided idfile arguments. This commit also ensures that we do not remove arguments that are part off the containers entrypoint. Fixes #9776 Signed-off-by: Paul Holzinger --- pkg/systemd/generate/common.go | 36 +++++- pkg/systemd/generate/common_test.go | 147 +++++++++++++++++++++--- pkg/systemd/generate/containers.go | 21 ++-- pkg/systemd/generate/containers_test.go | 91 +++++++++++++++ pkg/systemd/generate/pods.go | 8 +- pkg/systemd/generate/pods_test.go | 19 +++ 6 files changed, 290 insertions(+), 32 deletions(-) diff --git a/pkg/systemd/generate/common.go b/pkg/systemd/generate/common.go index 19d468403f..eafd45528b 100644 --- a/pkg/systemd/generate/common.go +++ b/pkg/systemd/generate/common.go @@ -39,20 +39,46 @@ After=network-online.target RequiresMountsFor={{{{.GraphRoot}}}} {{{{.RunRoot}}}} ` -// filterPodFlags removes --pod and --pod-id-file from the specified command. -func filterPodFlags(command []string) []string { +// filterPodFlags removes --pod, --pod-id-file and --infra-conmon-pidfile from the specified command. +// argCount is the number of last arguments which should not be filtered, e.g. the container entrypoint. +func filterPodFlags(command []string, argCount int) []string { processed := []string{} - for i := 0; i < len(command); i++ { + for i := 0; i < len(command)-argCount; i++ { s := command[i] - if s == "--pod" || s == "--pod-id-file" { + if s == "--pod" || s == "--pod-id-file" || s == "--infra-conmon-pidfile" { i++ continue } - if strings.HasPrefix(s, "--pod=") || strings.HasPrefix(s, "--pod-id-file=") { + if strings.HasPrefix(s, "--pod=") || + strings.HasPrefix(s, "--pod-id-file=") || + strings.HasPrefix(s, "--infra-conmon-pidfile=") { continue } processed = append(processed, s) } + processed = append(processed, command[len(command)-argCount:]...) + return processed +} + +// filterCommonContainerFlags removes --conmon-pidfile, --cidfile and --cgroups from the specified command. +// argCount is the number of last arguments which should not be filtered, e.g. the container entrypoint. +func filterCommonContainerFlags(command []string, argCount int) []string { + processed := []string{} + for i := 0; i < len(command)-argCount; i++ { + s := command[i] + + switch { + case s == "--conmon-pidfile", s == "--cidfile", s == "--cgroups": + i++ + continue + case strings.HasPrefix(s, "--conmon-pidfile="), + strings.HasPrefix(s, "--cidfile="), + strings.HasPrefix(s, "--cgroups="): + continue + } + processed = append(processed, s) + } + processed = append(processed, command[len(command)-argCount:]...) return processed } diff --git a/pkg/systemd/generate/common_test.go b/pkg/systemd/generate/common_test.go index 3787e461ea..30e758127e 100644 --- a/pkg/systemd/generate/common_test.go +++ b/pkg/systemd/generate/common_test.go @@ -1,7 +1,6 @@ package generate import ( - "strings" "testing" "github.com/stretchr/testify/assert" @@ -9,22 +8,144 @@ import ( func TestFilterPodFlags(t *testing.T) { tests := []struct { - input []string + input []string + output []string + argCount int }{ - {[]string{"podman", "pod", "create"}}, - {[]string{"podman", "pod", "create", "--name", "foo"}}, - {[]string{"podman", "pod", "create", "--pod-id-file", "foo"}}, - {[]string{"podman", "pod", "create", "--pod-id-file=foo"}}, - {[]string{"podman", "run", "--pod", "foo"}}, - {[]string{"podman", "run", "--pod=foo"}}, + { + []string{"podman", "pod", "create"}, + []string{"podman", "pod", "create"}, + 0, + }, + { + []string{"podman", "pod", "create", "--name", "foo"}, + []string{"podman", "pod", "create", "--name", "foo"}, + 0, + }, + { + []string{"podman", "pod", "create", "--pod-id-file", "foo"}, + []string{"podman", "pod", "create"}, + 0, + }, + { + []string{"podman", "pod", "create", "--pod-id-file=foo"}, + []string{"podman", "pod", "create"}, + 0, + }, + { + []string{"podman", "pod", "create", "--pod-id-file", "foo", "--infra-conmon-pidfile", "foo"}, + []string{"podman", "pod", "create"}, + 0, + }, + { + []string{"podman", "pod", "create", "--pod-id-file", "foo", "--infra-conmon-pidfile=foo"}, + []string{"podman", "pod", "create"}, + 0, + }, + { + []string{"podman", "run", "--pod", "foo"}, + []string{"podman", "run"}, + 0, + }, + { + []string{"podman", "run", "--pod=foo"}, + []string{"podman", "run"}, + 0, + }, + { + []string{"podman", "run", "--pod=foo", "fedora", "podman", "run", "--pod=test", "alpine"}, + []string{"podman", "run", "fedora", "podman", "run", "--pod=test", "alpine"}, + 5, + }, + { + []string{"podman", "run", "--pod", "foo", "fedora", "podman", "run", "--pod", "test", "alpine"}, + []string{"podman", "run", "fedora", "podman", "run", "--pod", "test", "alpine"}, + 6, + }, + { + []string{"podman", "run", "--pod-id-file=foo", "fedora", "podman", "run", "--pod-id-file=test", "alpine"}, + []string{"podman", "run", "fedora", "podman", "run", "--pod-id-file=test", "alpine"}, + 5, + }, + { + []string{"podman", "run", "--pod-id-file", "foo", "fedora", "podman", "run", "--pod-id-file", "test", "alpine"}, + []string{"podman", "run", "fedora", "podman", "run", "--pod-id-file", "test", "alpine"}, + 6, + }, + } + + for _, test := range tests { + processed := filterPodFlags(test.input, test.argCount) + assert.Equal(t, test.output, processed) + } +} + +func TestFilterCommonContainerFlags(t *testing.T) { + tests := []struct { + input []string + output []string + argCount int + }{ + { + []string{"podman", "run", "alpine"}, + []string{"podman", "run", "alpine"}, + 1, + }, + { + []string{"podman", "run", "--conmon-pidfile", "foo", "alpine"}, + []string{"podman", "run", "alpine"}, + 1, + }, + { + []string{"podman", "run", "--conmon-pidfile=foo", "alpine"}, + []string{"podman", "run", "alpine"}, + 1, + }, + { + []string{"podman", "run", "--cidfile", "foo", "alpine"}, + []string{"podman", "run", "alpine"}, + 1, + }, + { + []string{"podman", "run", "--cidfile=foo", "alpine"}, + []string{"podman", "run", "alpine"}, + 1, + }, + { + []string{"podman", "run", "--cgroups", "foo", "alpine"}, + []string{"podman", "run", "alpine"}, + 1, + }, + { + []string{"podman", "run", "--cgroups=foo", "alpine"}, + []string{"podman", "run", "alpine"}, + 1, + }, + { + []string{"podman", "run", "--cgroups", "foo", "--conmon-pidfile", "foo", "--cidfile", "foo", "alpine"}, + []string{"podman", "run", "alpine"}, + 1, + }, + { + []string{"podman", "run", "--cgroups=foo", "--conmon-pidfile=foo", "--cidfile=foo", "alpine"}, + []string{"podman", "run", "alpine"}, + 1, + }, + { + []string{"podman", "run", "--cgroups", "foo", "--conmon-pidfile", "foo", "--cidfile", "foo", "alpine", "--cgroups", "foo", "--conmon-pidfile", "foo", "--cidfile", "foo"}, + []string{"podman", "run", "alpine", "--cgroups", "foo", "--conmon-pidfile", "foo", "--cidfile", "foo"}, + 7, + }, + { + []string{"podman", "run", "--cgroups=foo", "--conmon-pidfile=foo", "--cidfile=foo", "alpine", "--cgroups=foo", "--conmon-pidfile=foo", "--cidfile=foo"}, + []string{"podman", "run", "alpine", "--cgroups=foo", "--conmon-pidfile=foo", "--cidfile=foo"}, + 4, + }, } for _, test := range tests { - processed := filterPodFlags(test.input) - for _, s := range processed { - assert.False(t, strings.HasPrefix(s, "--pod-id-file")) - assert.False(t, strings.HasPrefix(s, "--pod")) - } + processed := filterCommonContainerFlags(test.input, test.argCount) + assert.Equal(t, test.output, processed) } } diff --git a/pkg/systemd/generate/containers.go b/pkg/systemd/generate/containers.go index bc13a61167..e06655a8d5 100644 --- a/pkg/systemd/generate/containers.go +++ b/pkg/systemd/generate/containers.go @@ -238,13 +238,7 @@ func executeContainerTemplate(info *containerInfo, options entities.GenerateSyst "--cidfile", "{{{{.ContainerIDFile}}}}", "--cgroups=no-conmon", ) - // If the container is in a pod, make sure that the - // --pod-id-file is set correctly. - if info.Pod != nil { - podFlags := []string{"--pod-id-file", "{{{{.Pod.PodIDFile}}}}"} - startCommand = append(startCommand, podFlags...) - info.CreateCommand = filterPodFlags(info.CreateCommand) - } + remainingCmd := info.CreateCommand[index:] // Presence check for certain flags/options. fs := pflag.NewFlagSet("args", pflag.ContinueOnError) @@ -254,7 +248,16 @@ func executeContainerTemplate(info *containerInfo, options entities.GenerateSyst fs.BoolP("detach", "d", false, "") fs.String("name", "", "") fs.Bool("replace", false, "") - fs.Parse(info.CreateCommand[index:]) + fs.Parse(remainingCmd) + + remainingCmd = filterCommonContainerFlags(remainingCmd, fs.NArg()) + // If the container is in a pod, make sure that the + // --pod-id-file is set correctly. + if info.Pod != nil { + podFlags := []string{"--pod-id-file", "{{{{.Pod.PodIDFile}}}}"} + startCommand = append(startCommand, podFlags...) + remainingCmd = filterPodFlags(remainingCmd, fs.NArg()) + } hasDetachParam, err := fs.GetBool("detach") if err != nil { @@ -266,8 +269,6 @@ func executeContainerTemplate(info *containerInfo, options entities.GenerateSyst return "", err } - remainingCmd := info.CreateCommand[index:] - if !hasDetachParam { // Enforce detaching // diff --git a/pkg/systemd/generate/containers_test.go b/pkg/systemd/generate/containers_test.go index 1359c1a375..899ba6bfa1 100644 --- a/pkg/systemd/generate/containers_test.go +++ b/pkg/systemd/generate/containers_test.go @@ -392,6 +392,56 @@ ExecStopPost=/usr/bin/podman rm --ignore -f --cidfile %t/jadda-jadda.ctr-id PIDFile=%t/jadda-jadda.pid Type=forking +[Install] +WantedBy=multi-user.target default.target +` + + goodNewWithIDFiles := `# jadda-jadda.service +# autogenerated by Podman CI + +[Unit] +Description=Podman jadda-jadda.service +Documentation=man:podman-generate-systemd(1) +Wants=network.target +After=network-online.target +RequiresMountsFor=/var/lib/containers/storage /var/run/containers/storage + +[Service] +Environment=PODMAN_SYSTEMD_UNIT=%n +Restart=always +TimeoutStopSec=70 +ExecStartPre=/bin/rm -f %t/jadda-jadda.pid %t/jadda-jadda.ctr-id +ExecStart=/usr/bin/podman run --conmon-pidfile %t/jadda-jadda.pid --cidfile %t/jadda-jadda.ctr-id --cgroups=no-conmon -d awesome-image:latest podman run --cgroups=foo --conmon-pidfile=foo --cidfile=foo alpine +ExecStop=/usr/bin/podman stop --ignore --cidfile %t/jadda-jadda.ctr-id -t 10 +ExecStopPost=/usr/bin/podman rm --ignore -f --cidfile %t/jadda-jadda.ctr-id +PIDFile=%t/jadda-jadda.pid +Type=forking + +[Install] +WantedBy=multi-user.target default.target +` + + goodNewWithPodIDFiles := `# jadda-jadda.service +# autogenerated by Podman CI + +[Unit] +Description=Podman jadda-jadda.service +Documentation=man:podman-generate-systemd(1) +Wants=network.target +After=network-online.target +RequiresMountsFor=/var/lib/containers/storage /var/run/containers/storage + +[Service] +Environment=PODMAN_SYSTEMD_UNIT=%n +Restart=always +TimeoutStopSec=70 +ExecStartPre=/bin/rm -f %t/jadda-jadda.pid %t/jadda-jadda.ctr-id +ExecStart=/usr/bin/podman run --conmon-pidfile %t/jadda-jadda.pid --cidfile %t/jadda-jadda.ctr-id --cgroups=no-conmon --pod-id-file %t/pod-foobar.pod-id-file -d awesome-image:latest podman run --cgroups=foo --conmon-pidfile=foo --cidfile=foo --pod-id-file /tmp/pod-foobar.pod-id-file alpine +ExecStop=/usr/bin/podman stop --ignore --cidfile %t/jadda-jadda.ctr-id -t 10 +ExecStopPost=/usr/bin/podman rm --ignore -f --cidfile %t/jadda-jadda.ctr-id +PIDFile=%t/jadda-jadda.pid +Type=forking + [Install] WantedBy=multi-user.target default.target ` @@ -782,6 +832,47 @@ WantedBy=multi-user.target default.target false, false, }, + {"good with ID files", + containerInfo{ + Executable: "/usr/bin/podman", + ServiceName: "jadda-jadda", + ContainerNameOrID: "jadda-jadda", + RestartPolicy: "always", + PIDFile: "/var/run/containers/storage/overlay-containers/639c53578af4d84b8800b4635fa4e680ee80fd67e0e6a2d4eea48d1e3230f401/userdata/conmon.pid", + StopTimeout: 10, + PodmanVersion: "CI", + GraphRoot: "/var/lib/containers/storage", + RunRoot: "/var/run/containers/storage", + CreateCommand: []string{"I'll get stripped", "create", "--cgroups=foo", "--conmon-pidfile=foo", "--cidfile=foo", "awesome-image:latest", "podman", "run", "--cgroups=foo", "--conmon-pidfile=foo", "--cidfile=foo", "alpine"}, + EnvVariable: define.EnvVariable, + }, + goodNewWithIDFiles, + true, + false, + false, + }, + {"good with pod ID files", + containerInfo{ + Executable: "/usr/bin/podman", + ServiceName: "jadda-jadda", + ContainerNameOrID: "jadda-jadda", + RestartPolicy: "always", + PIDFile: "/var/run/containers/storage/overlay-containers/639c53578af4d84b8800b4635fa4e680ee80fd67e0e6a2d4eea48d1e3230f401/userdata/conmon.pid", + StopTimeout: 10, + PodmanVersion: "CI", + GraphRoot: "/var/lib/containers/storage", + RunRoot: "/var/run/containers/storage", + CreateCommand: []string{"I'll get stripped", "create", "--cgroups=foo", "--conmon-pidfile=foo", "--cidfile=foo", "--pod", "test", "awesome-image:latest", "podman", "run", "--cgroups=foo", "--conmon-pidfile=foo", "--cidfile=foo", "--pod-id-file", "/tmp/pod-foobar.pod-id-file", "alpine"}, + EnvVariable: define.EnvVariable, + Pod: &podInfo{ + PodIDFile: "%t/pod-foobar.pod-id-file", + }, + }, + goodNewWithPodIDFiles, + true, + false, + false, + }, } for _, tt := range tests { test := tt diff --git a/pkg/systemd/generate/pods.go b/pkg/systemd/generate/pods.go index a76979ecf7..1b92649e85 100644 --- a/pkg/systemd/generate/pods.go +++ b/pkg/systemd/generate/pods.go @@ -279,16 +279,16 @@ func executePodTemplate(info *podInfo, options entities.GenerateSystemdOptions) } podRootArgs = info.CreateCommand[1 : podCreateIndex-1] info.RootFlags = strings.Join(escapeSystemdArguments(podRootArgs), " ") - podCreateArgs = filterPodFlags(info.CreateCommand[podCreateIndex+1:]) + podCreateArgs = filterPodFlags(info.CreateCommand[podCreateIndex+1:], 0) } // We're hard-coding the first five arguments and append the // CreateCommand with a stripped command and subcommand. startCommand := []string{info.Executable} startCommand = append(startCommand, podRootArgs...) startCommand = append(startCommand, - []string{"pod", "create", - "--infra-conmon-pidfile", "{{{{.PIDFile}}}}", - "--pod-id-file", "{{{{.PodIDFile}}}}"}...) + "pod", "create", + "--infra-conmon-pidfile", "{{{{.PIDFile}}}}", + "--pod-id-file", "{{{{.PodIDFile}}}}") // Presence check for certain flags/options. fs := pflag.NewFlagSet("args", pflag.ContinueOnError) diff --git a/pkg/systemd/generate/pods_test.go b/pkg/systemd/generate/pods_test.go index 559f7365f6..0e4d92c506 100644 --- a/pkg/systemd/generate/pods_test.go +++ b/pkg/systemd/generate/pods_test.go @@ -320,6 +320,25 @@ WantedBy=multi-user.target default.target false, false, }, + {"pod --new with ID files", + podInfo{ + Executable: "/usr/bin/podman", + ServiceName: "pod-123abc", + InfraNameOrID: "jadda-jadda-infra", + RestartPolicy: "on-failure", + PIDFile: "/run/containers/storage/overlay-containers/639c53578af4d84b8800b4635fa4e680ee80fd67e0e6a2d4eea48d1e3230f401/userdata/conmon.pid", + StopTimeout: 10, + PodmanVersion: "CI", + GraphRoot: "/var/lib/containers/storage", + RunRoot: "/var/run/containers/storage", + RequiredServices: []string{"container-1", "container-2"}, + CreateCommand: []string{"podman", "pod", "create", "--infra-conmon-pidfile", "/tmp/pod-123abc.pid", "--pod-id-file", "/tmp/pod-123abc.pod-id", "--name", "foo", "bar=arg with space"}, + }, + podGoodNamedNew, + true, + false, + false, + }, } for _, tt := range tests {