Difference between revisions of "Containerd"

Revision as of 09:28, 26 October 2021

This article describes the status of checkpoint/restore integration with containerd, and how to use it.

Container Checkpoint/Restore

Note: ctr is unsupported debug and administrative client for interacting with the containerd daemon. The commands, options, and operations are not guaranteed to be backward compatible or stable from release to release of the containerd project.

Pull "ubuntu:latest" image if not already available locally.

ctr image pull docker.io/library/redis:alpine

Create and run a container with ID "looper"

ctr run --runtime io.containerd.runc.v1 -d docker.io/library/redis:alpine redis

Create container checkpoint

ctr c checkpoint --rw --task redis checkpoint/redis:20211011

Restore container from checkpoint

ctr c restore redis-debug checkpoint/redis:20211011

Difference between revisions of "Containerd"

Revision as of 09:28, 26 October 2021

Container Checkpoint/Restore

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@@ Line 3: / Line 3: @@
 == Container Checkpoint/Restore ==
-Create a container with ID "looper" based on the "ubuntu:latest" image.
+{{Note|<code>ctr</code> is unsupported debug and administrative client for interacting with the containerd daemon. The commands, options, and operations are not guaranteed to be backward compatible or stable from release to release of the containerd project.}}
- ctr run -d docker.io/library/ubuntu:latest looper /bin/sh -c 'i=0; while true; do echo $i; i=$(expr $i + 1); sleep 1; done'
+Pull "ubuntu:latest" image if not already available locally.
-  ctr task kill -s KILL looper
+  ctr image pull docker.io/library/redis:alpine
- tr task rm looperc
-  ctr containers rm looper
+Create and run a container with ID "looper"
+ ctr run --runtime io.containerd.runc.v1 -d docker.io/library/redis:alpine redis
+Create container checkpoint
+ ctr c checkpoint --rw --task redis checkpoint/redis:20211011
+Restore container from checkpoint
+  ctr c restore redis-debug checkpoint/redis:20211011