podman-container-restore

podman-container-restore(1) General Commands Manual podman-container-restore(1)

NAME

   podman-container-restore - Restore one or more containers from a checkpoint

SYNOPSIS

   podman container restore [options] name [...]

DESCRIPTION

   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

   Restore all checkpointed containers.
   The default is false.
   IMPORTANT: This OPTION does not need a container name or ID as input argument.

--file-locks

   Restore  a  container  with  file locks. This option is required to restore file locks from a checkpoint image. If the checkpoint image does not contain file locks, this option is ig‐
   nored. Defaults to not restoring file locks.
   The default is false.

--ignore-rootfs

   If a container is restored from a checkpoint tar.gz file it is possible that it also contains all root file-system changes. With --ignore-rootfs it is possible to  explicitly  disable
   applying these root file-system changes to the restored container.
   The default is false.
   IMPORTANT: This OPTION is only available in combination with --import, -i.

--ignore-static-ip

   If the container was started with --ip the restored container also tries to use that IP address and restore fails if that IP address is already in use. This can happen, if a container
   is restored multiple times from an exported checkpoint with --name, -n.

   Using --ignore-static-ip tells Podman to ignore the IP address if it was configured with --ip during container creation.

   The default is false.

--ignore-static-mac

   If  the container was started with --mac-address the restored container also tries to use that MAC address and restore fails if that MAC address is already in use. This can happen, if
   a container is restored multiple times from an exported checkpoint with --name, -n.

   Using --ignore-static-mac tells Podman to ignore the MAC address if it was configured with --mac-address during container creation.

   The default is false.

--ignore-volumes

   This option must be used in combination with the --import, -i option.  When restoring containers from a checkpoint tar.gz file with this option, the content of associated volumes  are
   not restored.
   The default is false.

--import, -i=file

   Import a checkpoint tar.gz file, which was exported by Podman. This can be used to import a checkpointed container from another host.
   IMPORTANT: This OPTION does not need a container name or ID as input argument.

   During  the  import  of  a checkpoint file Podman selects the same container runtime which was used during checkpointing. This is especially important if a specific (non-default) con‐
   tainer runtime was specified during container creation. Podman also aborts the restore if the container runtime specified during restore does not much the container runtime  used  for
   container creation.

--import-previous=file

   Import a pre-checkpoint tar.gz file which was exported by Podman. This option must be used with -i or --import. It only works on runc 1.0-rc3 or higher.  IMPORTANT: This OPTION is not
   supported on the remote client, including Mac and Windows (excluding WSL2) machines.

--keep, -k

   Keep all temporary log and statistics files created by CRIU during checkpointing as well as restoring. These files are not deleted if restoring fails for further debugging. If restor‐
   ing  succeeds  these  files are theoretically not needed, but if these files are needed Podman can keep the files for further analysis. This includes the checkpoint directory with all
   files created during checkpointing. The size required by the checkpoint directory is roughly the same as the amount of memory required by the processes in the checkpointed container.
   Without the --keep, -k option, the checkpoint is consumed and cannot be used again.
   The default is false.

--latest, -l

   Instead of providing the container ID or name, use the last created container. The default is false.  IMPORTANT: This OPTION is not available with the remote Podman client,  including
   Mac and Windows (excluding WSL2) machines. This OPTION does not need a container name or ID as input argument.

--name, -n=name

   If  a  container is restored from a checkpoint tar.gz file it is possible to rename it with --name, -n. This way it is possible to restore a container from a checkpoint multiple times
   with different names.

   If the --name, -n option is used, Podman does not attempt to assign the same IP address to the container it was using before checkpointing as each IP address can only  be  used  once,
   and the restored container has another IP address. This also means that --name, -n cannot be used in combination with --tcp-established.
   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.
   IMPORTANT: This OPTION is only available for a checkpoint image or in combination with --import, -i.

   This option requires at least CRIU 3.16.

--print-stats

   Print out statistics about restoring the container(s). The output is rendered in a JSON array and contains information about how much time different restore operations required.  Many
   of the restore statistics are created by CRIU and just passed through to Podman. The following information is provided in the JSON array:

          • podman_restore_duration: Overall time (in microseconds) needed to restore all checkpoints.

          • runtime_restore_duration: Time (in microseconds) the container runtime needed to restore the checkpoint.

          • forking_time: Time (in microseconds) CRIU needed to create (fork) all processes in the restored container (measured by CRIU).

          • restore_time: Time (in microseconds) CRIU needed to restore all processes in the container (measured by CRIU).

          • pages_restored: Number of memory pages restored (measured by CRIU).

   The default is false.

--publish, -p=port

   Replaces the ports that the container publishes, as configured during the initial container start, with a new set of port forwarding rules.

   For more details, see podman run --publish.

--tcp-established

   Restore  a  container  with established TCP connections. If the checkpoint image contains established TCP connections, this option is required during restore.  If the checkpoint image
   does not contain established TCP connections this option is ignored. Defaults to not restoring containers with established TCP connections.
   The default is false.

EXAMPLE

   Restore the container "mywebserver".

   # podman container restore mywebserver

   Import a checkpoint file and a pre-checkpoint file.

   # podman container restore --import-previous pre-checkpoint.tar.gz --import checkpoint.tar.gz

   Start the container "mywebserver". Make a checkpoint of the container and export it. Restore the container with other port ranges from the exported file.

   $ podman run --rm -p 2345:80 -d webserver
   # podman container checkpoint -l --export=dump.tar
   # 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