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Line 3:
Line 3: − Create a container with ID "looper" based on the "ubuntu:latest" image.+ − ctr image pull docker.io/library/ubuntu:latest+ − 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' − + − ctr task kill -s SIGKILL looper+ − ctr task rm looper − + + + + + + + + + +
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== Container Checkpoint/Restore ==
== Container Checkpoint/Restore ==
{{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.}}
Pull "ubuntu:latest" image if not already available locally.
ctr containers checkpoint looper cr0
ctr image pull docker.io/library/redis:alpine
Create and run a container with ID "looper"
ctr containers rm 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