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For future work, we need multiple implementations of the OCI
runtime, not just a Conmon-wrapped runtime matching the runc CLI.
As part of this, do some refactoring on the interface for exec
(move to a struct, not a massive list of arguments). Also, add
'all' support to Kill and Stop (supported by runc and used a bit
internally for removing containers).
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
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This includes:
Implement exec -i and fix some typos in description of -i docs
pass failed runtime status to caller
Add resize handling for a terminal connection
Customize exec systemd-cgroup slice
fix healthcheck
fix top
add --detach-keys
Implement podman-remote exec (jhonce)
* Cleanup some orphaned code (jhonce)
adapt remote exec for conmon exec (pehunt)
Fix healthcheck and exec to match docs
Introduce two new OCIRuntime errors to more comprehensively describe situations in which the runtime can error
Use these different errors in branching for exit code in healthcheck and exec
Set conmon to use new api version
Signed-off-by: Jhon Honce <jhonce@redhat.com>
Signed-off-by: Peter Hunt <pehunt@redhat.com>
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the compilation demands of having libpod in main is a burden for the
remote client compilations. to combat this, we should move the use of
libpod structs, vars, constants, and functions into the adapter code
where it will only be compiled by the local client.
this should result in cleaner code organization and smaller binaries. it
should also help if we ever need to compile the remote client on
non-Linux operating systems natively (not cross-compiled).
Signed-off-by: baude <bbaude@redhat.com>
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build a podman-remote binary for windows that allows users to use the
remote client on windows and interact with podman on linux system.
Signed-off-by: baude <bbaude@redhat.com>
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This is basically the same change as
ff47a4c2d5485fc49f937f3ce0c4e2fd6bdb1956 (Use a struct to pass options to Checkpoint())
just for the Restore() function. It is used to pass multiple restore
options to the API and down to conmon which is used to restore
containers. This is for the upcoming changes to support checkpointing
and restoring containers with '--tcp-established'.
Signed-off-by: Adrian Reber <areber@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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We need into to identify the OCI runtime and conmon used by podman.
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
Closes: #1224
Approved by: baude
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this should represent the last major changes to get darwin to **compile**. again,
the purpose here is to get darwin to compile so that we can eventually implement a
ci task that would protect against regressions for darwin compilation.
i have left the manual darwin compilation largely static still and in fact now only
interject (manually) two build tags to assist with the build. trevor king has great
ideas on how to make this better and i will defer final implementation of those
to him.
Signed-off-by: baude <bbaude@redhat.com>
Closes: #1047
Approved by: rhatdan
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Signed-off-by: baude <bbaude@redhat.com>
Closes: #1015
Approved by: baude
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