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Masking main level, image, and container commands that are not yet
implemented for the remote client. As each command is completed, be
sure to unmask it.
Also, masking podman command line switches that are not applicable
to the remote client.
Signed-off-by: baude <bbaude@redhat.com>
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Allow multiple alias for listing containers and images.
Also fix documentation for umount and unmount
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
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Allow user to prune unused/unnamed images, the layer images from building,
via podman rmi --prune.
Allow user to prune stopped/exiuted containers via podman rm --prune.
This should resolve #1910
Signed-off-by: baude <bbaude@redhat.com>
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Add an exists subcommand to podman container and podman image that allows
users to verify the existence of a container or image by ID or name. The return
code can be 0 (success), 1 (failed to find), or 125 (failed to work with runtime).
Issue #1845
Signed-off-by: baude <bbaude@redhat.com>
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runc uses CRIU to support checkpoint and restore of containers. This
brings an initial checkpoint/restore implementation to podman.
None of the additional runc flags are yet supported and container
migration optimization (pre-copy/post-copy) is also left for the future.
The current status is that it is possible to checkpoint and restore a
container. I am testing on RHEL-7.x and as the combination of RHEL-7 and
CRIU has seccomp troubles I have to create the container without
seccomp.
With the following steps I am able to checkpoint and restore a
container:
# podman run --security-opt="seccomp=unconfined" -d registry.fedoraproject.org/f27/httpd
# curl -I 10.22.0.78:8080
HTTP/1.1 403 Forbidden # <-- this is actually a good answer
# podman container checkpoint <container>
# curl -I 10.22.0.78:8080
curl: (7) Failed connect to 10.22.0.78:8080; No route to host
# podman container restore <container>
# curl -I 10.22.0.78:8080
HTTP/1.1 403 Forbidden
I am using CRIU, runc and conmon from git. All required changes for
checkpoint/restore support in podman have been merged in the
corresponding projects.
To have the same IP address in the restored container as before
checkpointing, CNI is told which IP address to use.
If the saved network configuration cannot be found during restore, the
container is restored with a new IP address.
For CRIU to restore established TCP connections the IP address of the
network namespace used for restore needs to be the same. For TCP
connections in the listening state the IP address can change.
During restore only one network interface with one IP address is handled
correctly. Support to restore containers with more advanced network
configuration will be implemented later.
v2:
* comment typo
* print debug messages during cleanup of restore files
* use createContainer() instead of createOCIContainer()
* introduce helper CheckpointPath()
* do not try to restore a container that is paused
* use existing helper functions for cleanup
* restructure code flow for better readability
* do not try to restore if checkpoint/inventory.img is missing
* git add checkpoint.go restore.go
v3:
* move checkpoint/restore under 'podman container'
v4:
* incorporated changes from latest reviews
Signed-off-by: Adrian Reber <areber@redhat.com>
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Execute the command as described by a container image. The value of the label is processed
into a command by:
1. Ensuring the first argument of the command is podman.
2. Substituting any variables with those defined by the environment or otherwise.
If no label exists in the container image, nothing is done.
podman container runlabel LABEL IMAGE extra_args
Signed-off-by: baude <bbaude@redhat.com>
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Don't print potentially verbose help messages in case of usage errors,
but print only the usage error followed by a pointer to the command's
help. This aligns with Docker.
```
$ podman run -h
flag needs an argument: -h
See 'podman run --help'.
```
Signed-off-by: Valentin Rothberg <vrothberg@suse.com>
Closes: #1379
Approved by: rhatdan
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Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
Closes: #1167
Approved by: baude
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When we run containers in detach mode, nothing cleans up the network stack or
the mount points. This patch will tell conmon to execute the cleanup code when
the container exits.
It can also be called to attempt to cleanup previously running containers.
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
Closes: #942
Approved by: mheon
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Signed-off-by: Matthew Heon <matthew.heon@gmail.com>
Closes: #981
Approved by: baude
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Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
Closes: #941
Approved by: TomSweeneyRedHat
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