Revert "generate systemd: custom stop signal"

This reverts commit 70801b3. It turns out that letting systemd handle stopping the container is not working as I thought it will. Conmon is receiving the stop/kill signals and may exit non-zero, which in turn lets the systemd service transition into the `failed` state. We need to get back to letting Podman stop the containers and do a partial revert of commit 9ac5267 which removed using --cidfile. Happening in a following commit. Signed-off-by: Valentin Rothberg <[email protected]>
containers · Aug 24, 2021 · 74ab2aa · 74ab2aa
1 parent e20ec47
commit 74ab2aa
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Showing 6 changed files with 25 additions and 59 deletions.
diff --git a/pkg/systemd/generate/common.go b/pkg/systemd/generate/common.go
@@ -8,9 +8,9 @@ import (
 	"github.com/pkg/errors"
 )
 
-// minTimeoutStopSec is the minimal stop timeout for generated systemd units
-// without --new.  Once exceeded, processes of the services are killed and the
-// cgroup(s) are cleaned up.
+// minTimeoutStopSec is the minimal stop timeout for generated systemd units.
+// Once exceeded, processes of the services are killed and the cgroup(s) are
+// cleaned up.
 const minTimeoutStopSec = 60
 
 // validateRestartPolicy checks that the user-provided policy is valid.

diff --git a/pkg/systemd/generate/containers.go b/pkg/systemd/generate/containers.go
@@ -16,7 +16,6 @@ import (
 	"github.com/pkg/errors"
 	"github.com/sirupsen/logrus"
 	"github.com/spf13/pflag"
-	"golang.org/x/sys/unix"
 )
 
 // containerInfo contains data required for generating a container's systemd
@@ -33,8 +32,6 @@ type containerInfo struct {
 	// StopTimeout sets the timeout Podman waits before killing the container
 	// during service stop.
 	StopTimeout uint
-	// KillSignal of the container.
-	KillSignal string
 	// RestartPolicy of the systemd unit (e.g., no, on-failure, always).
 	RestartPolicy string
 	// PIDFile of the service. Required for forking services. Must point to the
@@ -105,9 +102,6 @@ Environment={{{{- range $index, $value := .ExtraEnvs -}}}}{{{{if $index}}}} {{{{
 {{{{- end}}}}
 Restart={{{{.RestartPolicy}}}}
 TimeoutStopSec={{{{.TimeoutStopSec}}}}
-{{{{- if .KillSignal}}}}
-KillSignal={{{{.KillSignal}}}}
-{{{{- end}}}}
 {{{{- if .ExecStartPre}}}}
 ExecStartPre={{{{.ExecStartPre}}}}
 {{{{- end}}}}
@@ -190,13 +184,6 @@ func generateContainerInfo(ctr *libpod.Container, options entities.GenerateSyste
 		containerEnv:      envs,
 	}
 
-	// Set a custom kill signal for non SIGTERM (already default in
-	// systemd) signals.
-	stopSignal := ctr.StopSignal()
-	if stopSignal != uint(unix.SIGTERM) {
-		info.KillSignal = fmt.Sprintf("%d", stopSignal)
-	}
-
 	return &info, nil
 }
 
@@ -372,15 +359,7 @@ func executeContainerTemplate(info *containerInfo, options entities.GenerateSyst
 		info.ExecStart = strings.Join(startCommand, " ")
 	}
 
-	info.TimeoutStopSec = info.StopTimeout
-
-	// For units without --new add an additional 60 seconds to the stop
-	// timeout to make sure that Podman stop has enough time to properly
-	// shutdown and cleanup the container before systemd starts to nuke
-	// everything in the cgroup.
-	if !options.New {
-		info.TimeoutStopSec += minTimeoutStopSec
-	}
+	info.TimeoutStopSec = minTimeoutStopSec + info.StopTimeout
 
 	if info.PodmanVersion == "" {
 		info.PodmanVersion = version.Version.String()

diff --git a/pkg/systemd/generate/containers_test.go b/pkg/systemd/generate/containers_test.go
@@ -129,7 +129,7 @@ RequiresMountsFor=/var/run/containers/storage
 [Service]
 Environment=PODMAN_SYSTEMD_UNIT=%n
 Restart=always
-TimeoutStopSec=10
+TimeoutStopSec=70
 ExecStart=/usr/bin/podman container run --cgroups=no-conmon --rm --sdnotify=conmon -d --replace --name jadda-jadda --hostname hello-world awesome-image:latest command arg1 ... argN "foo=arg \"with \" space"
 Type=notify
 NotifyAccess=all
@@ -151,7 +151,7 @@ RequiresMountsFor=/var/run/containers/storage
 [Service]
 Environment=PODMAN_SYSTEMD_UNIT=%n
 Restart=always
-TimeoutStopSec=10
+TimeoutStopSec=70
 ExecStart=/usr/bin/podman container run --cgroups=no-conmon --rm -d --replace --sdnotify=container --name jadda-jadda --hostname hello-world awesome-image:latest command arg1 ... argN "foo=arg \"with \" space"
 Type=notify
 NotifyAccess=all
@@ -173,7 +173,7 @@ RequiresMountsFor=/var/run/containers/storage
 [Service]
 Environment=PODMAN_SYSTEMD_UNIT=%n
 Restart=always
-TimeoutStopSec=10
+TimeoutStopSec=70
 ExecStart=/usr/bin/podman run --cgroups=no-conmon --rm --sdnotify=conmon --replace -d --name jadda-jadda --hostname hello-world awesome-image:latest command arg1 ... argN
 Type=notify
 NotifyAccess=all
@@ -195,7 +195,7 @@ RequiresMountsFor=/var/run/containers/storage
 [Service]
 Environment=PODMAN_SYSTEMD_UNIT=%n
 Restart=always
-TimeoutStopSec=10
+TimeoutStopSec=70
 ExecStart=/usr/bin/podman run --cgroups=no-conmon --rm --pod-id-file %t/pod-foobar.pod-id-file --sdnotify=conmon --replace -d --name jadda-jadda --hostname hello-world awesome-image:latest command arg1 ... argN
 Type=notify
 NotifyAccess=all
@@ -217,7 +217,7 @@ RequiresMountsFor=/var/run/containers/storage
 [Service]
 Environment=PODMAN_SYSTEMD_UNIT=%n
 Restart=always
-TimeoutStopSec=10
+TimeoutStopSec=70
 ExecStart=/usr/bin/podman run --cgroups=no-conmon --rm --sdnotify=conmon --replace --detach --name jadda-jadda --hostname hello-world awesome-image:latest command arg1 ... argN
 Type=notify
 NotifyAccess=all
@@ -239,7 +239,7 @@ RequiresMountsFor=/var/run/containers/storage
 [Service]
 Environment=PODMAN_SYSTEMD_UNIT=%n
 Restart=always
-TimeoutStopSec=10
+TimeoutStopSec=70
 ExecStart=/usr/bin/podman run --cgroups=no-conmon --rm --sdnotify=conmon -d awesome-image:latest
 Type=notify
 NotifyAccess=all
@@ -262,7 +262,7 @@ RequiresMountsFor=/var/run/containers/storage
 [Service]
 Environment=PODMAN_SYSTEMD_UNIT=%n
 Restart=always
-TimeoutStopSec=42
+TimeoutStopSec=102
 ExecStart=/usr/bin/podman run --cgroups=no-conmon --rm --sdnotify=conmon ` +
 			detachparam +
 			` awesome-image:latest
@@ -288,7 +288,7 @@ RequiresMountsFor=/var/run/containers/storage
 [Service]
 Environment=PODMAN_SYSTEMD_UNIT=%n
 Restart=always
-TimeoutStopSec=42
+TimeoutStopSec=102
 ExecStart=/usr/bin/podman run --cgroups=no-conmon --rm --sdnotify=conmon -d --replace --name test -p 80:80 awesome-image:latest somecmd --detach=false
 Type=notify
 NotifyAccess=all
@@ -310,7 +310,7 @@ RequiresMountsFor=/var/run/containers/storage
 [Service]
 Environment=PODMAN_SYSTEMD_UNIT=%n
 Restart=always
-TimeoutStopSec=42
+TimeoutStopSec=102
 ExecStart=/usr/bin/podman --events-backend none --runroot /root run --cgroups=no-conmon --rm --sdnotify=conmon -d awesome-image:latest
 Type=notify
 NotifyAccess=all
@@ -332,7 +332,7 @@ RequiresMountsFor=/var/run/containers/storage
 [Service]
 Environment=PODMAN_SYSTEMD_UNIT=%n
 Restart=always
-TimeoutStopSec=10
+TimeoutStopSec=70
 ExecStart=/usr/bin/podman container run --cgroups=no-conmon --rm --sdnotify=conmon -d awesome-image:latest
 Type=notify
 NotifyAccess=all
@@ -354,7 +354,7 @@ RequiresMountsFor=/var/run/containers/storage
 [Service]
 Environment=PODMAN_SYSTEMD_UNIT=%n
 Restart=always
-TimeoutStopSec=10
+TimeoutStopSec=70
 ExecStart=/usr/bin/podman run --cgroups=no-conmon --rm --sdnotify=conmon -d --replace --name test --log-driver=journald --log-opt=tag={{.Name}} awesome-image:latest
 Type=notify
 NotifyAccess=all
@@ -376,7 +376,7 @@ RequiresMountsFor=/var/run/containers/storage
 [Service]
 Environment=PODMAN_SYSTEMD_UNIT=%n
 Restart=always
-TimeoutStopSec=10
+TimeoutStopSec=70
 ExecStart=/usr/bin/podman run --cgroups=no-conmon --rm --sdnotify=conmon -d --replace --name test awesome-image:latest sh -c "kill $$$$ && echo %%\\"
 Type=notify
 NotifyAccess=all
@@ -398,7 +398,7 @@ RequiresMountsFor=/var/run/containers/storage
 [Service]
 Environment=PODMAN_SYSTEMD_UNIT=%n
 Restart=always
-TimeoutStopSec=10
+TimeoutStopSec=70
 ExecStart=/usr/bin/podman run --cgroups=no-conmon --rm --sdnotify=conmon -d --conmon-pidfile=foo --cidfile=foo awesome-image:latest podman run --cgroups=foo --conmon-pidfile=foo --cidfile=foo alpine
 Type=notify
 NotifyAccess=all
@@ -420,7 +420,7 @@ RequiresMountsFor=/var/run/containers/storage
 [Service]
 Environment=PODMAN_SYSTEMD_UNIT=%n
 Restart=always
-TimeoutStopSec=10
+TimeoutStopSec=70
 ExecStart=/usr/bin/podman run --cgroups=no-conmon --rm --pod-id-file %t/pod-foobar.pod-id-file --sdnotify=conmon -d --conmon-pidfile=foo --cidfile=foo awesome-image:latest podman run --cgroups=foo --conmon-pidfile=foo --cidfile=foo --pod-id-file /tmp/pod-foobar.pod-id-file alpine
 Type=notify
 NotifyAccess=all
@@ -443,7 +443,7 @@ RequiresMountsFor=/var/run/containers/storage
 Environment=PODMAN_SYSTEMD_UNIT=%n
 Environment=FOO=abc "BAR=my test" USER=%%a
 Restart=always
-TimeoutStopSec=10
+TimeoutStopSec=70
 ExecStart=/usr/bin/podman run --cgroups=no-conmon --rm --sdnotify=conmon -d --env FOO --env=BAR --env=MYENV=2 -e USER awesome-image:latest
 Type=notify
 NotifyAccess=all

diff --git a/pkg/systemd/generate/pods.go b/pkg/systemd/generate/pods.go
@@ -323,7 +323,7 @@ func executePodTemplate(info *podInfo, options entities.GenerateSystemdOptions)
 		info.ExecStop = "{{{{.Executable}}}} {{{{if .RootFlags}}}}{{{{ .RootFlags}}}} {{{{end}}}}pod stop --ignore --pod-id-file {{{{.PodIDFile}}}} {{{{if (ge .StopTimeout 0)}}}}-t {{{{.StopTimeout}}}}{{{{end}}}}"
 		info.ExecStopPost = "{{{{.Executable}}}} {{{{if .RootFlags}}}}{{{{ .RootFlags}}}} {{{{end}}}}pod rm --ignore -f --pod-id-file {{{{.PodIDFile}}}}"
 	}
-	info.TimeoutStopSec = info.StopTimeout
+	info.TimeoutStopSec = minTimeoutStopSec + info.StopTimeout
 
 	if info.PodmanVersion == "" {
 		info.PodmanVersion = version.Version.String()

diff --git a/pkg/systemd/generate/pods_test.go b/pkg/systemd/generate/pods_test.go
@@ -54,7 +54,7 @@ Before=container-1.service container-2.service
 [Service]
 Environment=PODMAN_SYSTEMD_UNIT=%n
 Restart=always
-TimeoutStopSec=42
+TimeoutStopSec=102
 ExecStart=/usr/bin/podman start jadda-jadda-infra
 ExecStop=/usr/bin/podman stop -t 42 jadda-jadda-infra
 ExecStopPost=/usr/bin/podman stop -t 42 jadda-jadda-infra
@@ -82,7 +82,7 @@ Before=container-1.service container-2.service
 [Service]
 Environment=PODMAN_SYSTEMD_UNIT=%n
 Restart=on-failure
-TimeoutStopSec=10
+TimeoutStopSec=70
 ExecStartPre=/bin/rm -f %t/pod-123abc.pid %t/pod-123abc.pod-id
 ExecStartPre=/usr/bin/podman pod create --infra-conmon-pidfile %t/pod-123abc.pid --pod-id-file %t/pod-123abc.pod-id --name foo "bar=arg with space" --replace
 ExecStart=/usr/bin/podman pod start --pod-id-file %t/pod-123abc.pod-id
@@ -110,7 +110,7 @@ Before=container-1.service container-2.service
 [Service]
 Environment=PODMAN_SYSTEMD_UNIT=%n
 Restart=on-failure
-TimeoutStopSec=10
+TimeoutStopSec=70
 ExecStartPre=/bin/rm -f %t/pod-123abc.pid %t/pod-123abc.pod-id
 ExecStartPre=/usr/bin/podman --events-backend none --runroot /root pod create --infra-conmon-pidfile %t/pod-123abc.pid --pod-id-file %t/pod-123abc.pod-id --name foo "bar=arg with space" --replace
 ExecStart=/usr/bin/podman --events-backend none --runroot /root pod start --pod-id-file %t/pod-123abc.pod-id
@@ -138,7 +138,7 @@ Before=container-1.service container-2.service
 [Service]
 Environment=PODMAN_SYSTEMD_UNIT=%n
 Restart=on-failure
-TimeoutStopSec=10
+TimeoutStopSec=70
 ExecStartPre=/bin/rm -f %t/pod-123abc.pid %t/pod-123abc.pod-id
 ExecStartPre=/usr/bin/podman pod create --infra-conmon-pidfile %t/pod-123abc.pid --pod-id-file %t/pod-123abc.pod-id --name foo --replace
 ExecStart=/usr/bin/podman pod start --pod-id-file %t/pod-123abc.pod-id
@@ -166,7 +166,7 @@ Before=container-1.service container-2.service
 [Service]
 Environment=PODMAN_SYSTEMD_UNIT=%n
 Restart=on-failure
-TimeoutStopSec=10
+TimeoutStopSec=70
 ExecStartPre=/bin/rm -f %t/pod-123abc.pid %t/pod-123abc.pod-id
 ExecStartPre=/usr/bin/podman pod create --infra-conmon-pidfile %t/pod-123abc.pid --pod-id-file %t/pod-123abc.pod-id --name foo --label key={{someval}} --replace
 ExecStart=/usr/bin/podman pod start --pod-id-file %t/pod-123abc.pod-id

diff --git a/test/system/250-systemd.bats b/test/system/250-systemd.bats
@@ -125,17 +125,4 @@ function service_cleanup() {
     service_cleanup
 }
 
-@test "podman generate systemd - stop-signal" {
-    cname=$(random_string)
-    run_podman create --name $cname --stop-signal=42 $IMAGE
-    run_podman generate systemd --new $cname
-    is "$output" ".*KillSignal=42.*" "KillSignal is set"
-
-    # Regression test for #11304: systemd wants a custom stop-signal.
-    run_podman rm -f $cname
-    run_podman create --name $cname --systemd=true $IMAGE systemd
-    run_podman generate systemd --new $cname
-    is "$output" ".*KillSignal=37.*" "KillSignal is set"
-}
-
 # vim: filetype=sh