diff options
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/source/markdown/podman-build.1.md | 4 | ||||
| -rw-r--r-- | docs/source/markdown/podman-container-checkpoint.1.md | 59 | ||||
| -rw-r--r-- | docs/source/markdown/podman-container-restore.1.md | 20 |
3 files changed, 79 insertions, 4 deletions
diff --git a/docs/source/markdown/podman-build.1.md b/docs/source/markdown/podman-build.1.md index 03ff88aeb..1080581d7 100644 --- a/docs/source/markdown/podman-build.1.md +++ b/docs/source/markdown/podman-build.1.md @@ -495,6 +495,10 @@ If the pull option is set to `always` (with *--pull=always*), pull the image from the first registry it is found in as listed in registries.conf. Raise an error if not found in the registries, even if the image is present locally. +If the pull option is set to `missing` (with *--pull=missing*), +Pull the image only if it is not present in the local storage. Raise an error if it +could neither be found in the local storage or on a registry. + If the pull option is set to `never` (with *--pull=never*), Do not pull the image from the registry, use only the local version. Raise an error if the image is not present locally. diff --git a/docs/source/markdown/podman-container-checkpoint.1.md b/docs/source/markdown/podman-container-checkpoint.1.md index 5c07cd975..a11897081 100644 --- a/docs/source/markdown/podman-container-checkpoint.1.md +++ b/docs/source/markdown/podman-container-checkpoint.1.md @@ -28,6 +28,60 @@ archives. Not compressing the checkpoint archive can result in faster checkpoint archive creation.\ The default is **zstd**. +#### **--create-image**=*image* + +Create a checkpoint image from a running container. This is a standard OCI image +created in the local image store. It consists of a single layer that contains +all of the checkpoint files. The content of this image layer is in the same format as a +checkpoint created with **--export**. A checkpoint image can be pushed to a +standard container registry and pulled on a different system to enable container +migration. In addition, the image can be exported with **podman image save** and +inspected with **podman inspect**. Inspecting a checkpoint image would display +additional information, stored as annotations, about the host environment used +to do the checkpoint: + +- **io.podman.annotations.checkpoint.name**: Human-readable name of the original + container. + +- **io.podman.annotations.checkpoint.rawImageName**: Unprocessed name of the + image used to create the original container (as specified by the user). + +- **io.podman.annotations.checkpoint.rootfsImageID**: ID of the image used to + create the original container. + +- **io.podman.annotations.checkpoint.rootfsImageName**: Image name used to + create the original container. + +- **io.podman.annotations.checkpoint.podman.version**: Version of Podman used to + create the checkpoint. + +- **io.podman.annotations.checkpoint.criu.version**: Version of CRIU used to + create the checkpoint. + +- **io.podman.annotations.checkpoint.runtime.name**: Container runtime (e.g., + runc, crun) used to create the checkpoint. + +- **io.podman.annotations.checkpoint.runtime.version**: Version of the container + runtime used to create the checkpoint. + +- **io.podman.annotations.checkpoint.conmon.version**: Version of conmon used + with the original container. + +- **io.podman.annotations.checkpoint.host.arch**: CPU architecture of the host + on which the checkpoint was created. + +- **io.podman.annotations.checkpoint.host.kernel**: Version of Linux kernel + of the host where the checkpoint was created. + +- **io.podman.annotations.checkpoint.cgroups.version**: cgroup version used by + the host where the checkpoint was created. + +- **io.podman.annotations.checkpoint.distribution.version**: Version of host + distribution on which the checkpoint was created. + +- **io.podman.annotations.checkpoint.distribution.name**: Name of host + distribution on which the checkpoint was created. + #### **--export**, **-e**=*archive* Export the checkpoint to a tar.gz file. The exported checkpoint can be used @@ -145,6 +199,11 @@ Make a checkpoint for the container "mywebserver". # podman container checkpoint mywebserver ``` +Create a checkpoint image for the container "mywebserver". +``` +# podman container checkpoint --create-image mywebserver-checkpoint-1 mywebserver +``` + Dumps the container's memory information of the latest container into an archive. ``` # podman container checkpoint -P -e pre-checkpoint.tar.gz -l diff --git a/docs/source/markdown/podman-container-restore.1.md b/docs/source/markdown/podman-container-restore.1.md index 5b1bf82c5..a70cc30d1 100644 --- a/docs/source/markdown/podman-container-restore.1.md +++ b/docs/source/markdown/podman-container-restore.1.md @@ -4,10 +4,11 @@ podman\-container\-restore - Restores one or more containers from a checkpoint ## SYNOPSIS -**podman container restore** [*options*] *container* [*container* ...] +**podman container restore** [*options*] *name* [...] ## DESCRIPTION -**podman container restore** restores a container from a checkpoint. The *container IDs* or *names* are used as input. +**podman container restore** restores a container from a container checkpoint or +checkpoint image. The *container IDs*, *image IDs* or *names* are used as input. ## OPTIONS #### **--all**, **-a** @@ -106,14 +107,16 @@ If the **--name, -n** option is used, Podman will not attempt to assign the same address to the *container* it was using before checkpointing as each IP address can only be used once and the restored *container* will have another IP address. This also means that **--name, -n** cannot be used in combination with **--tcp-established**.\ -*IMPORTANT: This OPTION is only available in combination with __--import, -i__.* +*IMPORTANT: This OPTION is only available for a checkpoint image or in combination +with __--import, -i__.* #### **--pod**=*name* Restore a container into the pod *name*. The destination pod for this restore has to have the same namespaces shared as the pod this container was checkpointed from (see **[podman pod create --share](podman-pod-create.1.md#--share)**).\ -*IMPORTANT: This OPTION is only available in combination with __--import, -i__.* +*IMPORTANT: This OPTION is only available for a checkpoint image or in combination +with __--import, -i__.* This option requires at least CRIU 3.16. @@ -175,6 +178,15 @@ $ podman run --rm -p 2345:80 -d webserver # podman container restore -p 5432:8080 --import=dump.tar ``` +Start a container with the name "foobar-1". Create a checkpoint image "foobar-checkpoint". Restore the container from the checkpoint image with a different name. +``` +# podman run --name foobar-1 -d webserver +# podman container checkpoint --create-image foobar-checkpoint foobar-1 +# podman inspect foobar-checkpoint +# podman container restore --name foobar-2 foobar-checkpoint +# podman container restore --name foobar-3 foobar-checkpoint +``` + ## SEE ALSO **[podman(1)](podman.1.md)**, **[podman-container-checkpoint(1)](podman-container-checkpoint.1.md)**, **[podman-run(1)](podman-run.1.md)**, **[podman-pod-create(1)](podman-pod-create.1.md)**, **criu(8)** |