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-rw-r--r--cmd/podman/common.go2
-rw-r--r--docs/source/markdown/podman-create.1.md3
-rw-r--r--docs/source/markdown/podman-run.1.md3
-rw-r--r--libpod/container.go5
-rw-r--r--libpod/oci_conmon_linux.go13
-rw-r--r--libpod/options.go21
-rw-r--r--pkg/spec/namespaces.go4
-rw-r--r--pkg/spec/spec.go4
-rw-r--r--pkg/systemdgen/systemdgen.go5
-rw-r--r--pkg/systemdgen/systemdgen_test.go2
10 files changed, 40 insertions, 22 deletions
diff --git a/cmd/podman/common.go b/cmd/podman/common.go
index 8690be64f..f3aff1d49 100644
--- a/cmd/podman/common.go
+++ b/cmd/podman/common.go
@@ -158,7 +158,7 @@ func getCreateFlags(c *cliconfig.PodmanCommand) {
)
createFlags.String(
"cgroups", "enabled",
- "control container cgroup configuration",
+ `control container cgroup configuration ("enabled"|"disabled"|"no-conmon")`,
)
createFlags.String(
"cgroup-parent", "",
diff --git a/docs/source/markdown/podman-create.1.md b/docs/source/markdown/podman-create.1.md
index 0236e30ba..7f0c2260c 100644
--- a/docs/source/markdown/podman-create.1.md
+++ b/docs/source/markdown/podman-create.1.md
@@ -78,8 +78,9 @@ If the host uses cgroups v1, the default is set to **host**. On cgroups v2 the
**--cgroups**=*mode*
Determines whether the container will create CGroups.
-Valid values are *enabled* and *disabled*, which the default being *enabled*.
+Valid values are *enabled*, *disabled*, *no-conmon*, which the default being *enabled*.
The *disabled* option will force the container to not create CGroups, and thus conflicts with CGroup options (**--cgroupns** and **--cgroup-parent**).
+The *no-conmon* option disables a new CGroup only for the conmon process.
**--cgroup-parent**=*path*
diff --git a/docs/source/markdown/podman-run.1.md b/docs/source/markdown/podman-run.1.md
index f613e6668..2b1452b53 100644
--- a/docs/source/markdown/podman-run.1.md
+++ b/docs/source/markdown/podman-run.1.md
@@ -92,8 +92,9 @@ If the host uses cgroups v1, the default is set to **host**. On cgroups v2 the
**--cgroups**=*mode*
Determines whether the container will create CGroups.
-Valid values are *enabled* and *disabled*, which the default being *enabled*.
+Valid values are *enabled*, *disabled*, *no-conmon*, which the default being *enabled*.
The *disabled* option will force the container to not create CGroups, and thus conflicts with CGroup options (**--cgroupns** and **--cgroup-parent**).
+The *no-conmon* option disables a new CGroup only for the conmon process.
**--cgroup-parent**=*cgroup*
diff --git a/libpod/container.go b/libpod/container.go
index b3cb6334a..f29cebf20 100644
--- a/libpod/container.go
+++ b/libpod/container.go
@@ -373,8 +373,11 @@ type ContainerConfig struct {
// Time container was created
CreatedTime time.Time `json:"createdTime"`
// NoCgroups indicates that the container will not create CGroups. It is
- // incompatible with CgroupParent.
+ // incompatible with CgroupParent. Deprecated in favor of CgroupsMode.
NoCgroups bool `json:"noCgroups,omitempty"`
+ // CgroupsMode indicates how the container will create cgroups
+ // (disabled, no-conmon, enabled). It supersedes NoCgroups.
+ CgroupsMode string `json:"cgroupsMode,omitempty"`
// Cgroup parent of the container
CgroupParent string `json:"cgroupParent"`
// LogPath log location
diff --git a/libpod/oci_conmon_linux.go b/libpod/oci_conmon_linux.go
index 0e8a64865..722012386 100644
--- a/libpod/oci_conmon_linux.go
+++ b/libpod/oci_conmon_linux.go
@@ -1425,11 +1425,22 @@ func startCommandGivenSelinux(cmd *exec.Cmd) error {
// it then signals for conmon to start by sending nonse data down the start fd
func (r *ConmonOCIRuntime) moveConmonToCgroupAndSignal(ctr *Container, cmd *exec.Cmd, startFd *os.File) error {
mustCreateCgroup := true
- // If cgroup creation is disabled - just signal.
+
if ctr.config.NoCgroups {
mustCreateCgroup = false
}
+ // If cgroup creation is disabled - just signal.
+ switch ctr.config.CgroupsMode {
+ case "disabled", "no-conmon":
+ mustCreateCgroup = false
+ }
+
+ // $INVOCATION_ID is set by systemd when running as a service.
+ if os.Getenv("INVOCATION_ID") != "" {
+ mustCreateCgroup = false
+ }
+
if mustCreateCgroup {
cgroupParent := ctr.CgroupParent()
if r.cgroupManager == define.SystemdCgroupsManager {
diff --git a/libpod/options.go b/libpod/options.go
index 8bc5a541d..593037382 100644
--- a/libpod/options.go
+++ b/libpod/options.go
@@ -1078,25 +1078,26 @@ func WithLogTag(tag string) CtrCreateOption {
}
-// WithNoCgroups disables the creation of CGroups for the new container.
-func WithNoCgroups() CtrCreateOption {
+// WithCgroupsMode disables the creation of CGroups for the conmon process.
+func WithCgroupsMode(mode string) CtrCreateOption {
return func(ctr *Container) error {
if ctr.valid {
return define.ErrCtrFinalized
}
- if ctr.config.CgroupParent != "" {
- return errors.Wrapf(define.ErrInvalidArg, "NoCgroups conflicts with CgroupParent")
- }
-
- if ctr.config.PIDNsCtr != "" {
- return errors.Wrapf(define.ErrInvalidArg, "NoCgroups requires a private PID namespace and cannot be used when PID namespace is shared with another container")
+ switch mode {
+ case "disabled":
+ ctr.config.NoCgroups = true
+ ctr.config.CgroupsMode = mode
+ case "enabled", "no-conmon":
+ ctr.config.CgroupsMode = mode
+ default:
+ return errors.Wrapf(define.ErrInvalidArg, "Invalid cgroup mode %q", mode)
}
- ctr.config.NoCgroups = true
-
return nil
}
+
}
// WithCgroupParent sets the Cgroup Parent of the new container.
diff --git a/pkg/spec/namespaces.go b/pkg/spec/namespaces.go
index e62d4ed0a..1f98e6e25 100644
--- a/pkg/spec/namespaces.go
+++ b/pkg/spec/namespaces.go
@@ -213,8 +213,8 @@ func (c *CgroupConfig) ToCreateOptions(runtime *libpod.Runtime) ([]libpod.CtrCre
options = append(options, libpod.WithCgroupParent(c.CgroupParent))
}
- if c.Cgroups == "disabled" {
- options = append(options, libpod.WithNoCgroups())
+ if c.Cgroups != "" {
+ options = append(options, libpod.WithCgroupsMode(c.Cgroups))
}
return options, nil
diff --git a/pkg/spec/spec.go b/pkg/spec/spec.go
index 7a220012f..cae055bb0 100644
--- a/pkg/spec/spec.go
+++ b/pkg/spec/spec.go
@@ -358,10 +358,10 @@ func (config *CreateConfig) createConfigToOCISpec(runtime *libpod.Runtime, userM
return nil, errors.New("cannot specify resource limits when cgroups are disabled is specified")
}
configSpec.Linux.Resources = &spec.LinuxResources{}
- case "enabled", "":
+ case "enabled", "no-conmon", "":
// Do nothing
default:
- return nil, errors.New("unrecognized option for cgroups; supported are 'default' and 'disabled'")
+ return nil, errors.New("unrecognized option for cgroups; supported are 'default', 'disabled', 'no-conmon'")
}
// Add annotations
diff --git a/pkg/systemdgen/systemdgen.go b/pkg/systemdgen/systemdgen.go
index 745b708e4..26b3b3756 100644
--- a/pkg/systemdgen/systemdgen.go
+++ b/pkg/systemdgen/systemdgen.go
@@ -153,13 +153,14 @@ func CreateContainerSystemdUnit(info *ContainerInfo, opts Options) (string, erro
if len(info.CreateCommand) < index+1 {
return "", errors.Errorf("container's create command is too short or invalid: %v", info.CreateCommand)
}
- // We're hard-coding the first four arguments and append the
- // CreatCommand with a stripped command and subcomand.
+ // We're hard-coding the first five arguments and append the
+ // CreateCommand with a stripped command and subcomand.
command := []string{
info.Executable,
"run",
"--conmon-pidfile", "/%t/%n-pid",
"--cidfile", "/%t/%n-cid",
+ "--cgroups=no-conmon",
}
command = append(command, info.CreateCommand[index:]...)
info.RunCommand = strings.Join(command, " ")
diff --git a/pkg/systemdgen/systemdgen_test.go b/pkg/systemdgen/systemdgen_test.go
index 9c6933d17..ee2429407 100644
--- a/pkg/systemdgen/systemdgen_test.go
+++ b/pkg/systemdgen/systemdgen_test.go
@@ -122,7 +122,7 @@ Documentation=man:podman-generate-systemd(1)
[Service]
Restart=always
ExecStartPre=/usr/bin/rm -f /%t/%n-pid /%t/%n-cid
-ExecStart=/usr/bin/podman run --conmon-pidfile /%t/%n-pid --cidfile /%t/%n-cid --name jadda-jadda --hostname hello-world awesome-image:latest command arg1 ... argN
+ExecStart=/usr/bin/podman run --conmon-pidfile /%t/%n-pid --cidfile /%t/%n-cid --cgroups=no-conmon --name jadda-jadda --hostname hello-world awesome-image:latest command arg1 ... argN
ExecStop=/usr/bin/podman stop --ignore --cidfile /%t/%n-cid -t 42
ExecStopPost=/usr/bin/podman rm --ignore -f --cidfile /%t/%n-cid
PIDFile=/%t/%n-pid
generated by cgit v1.2.3-54-g00ecf (git 2.39.0) at 2024-12-27 09:32:02 +0000