checkpoint is not a docker command

Question

I want to use checkpoint in docker. I refer this doc to learn.enter link description here But I have some problems. When I type docker checkpoint $cid, docker tell me checkpoint is not a docker command, I don't know how to solve this problem.

Wangs-MacBook-Pro:~ wxc575843$ export cid=$(docker run -d busybox tail -f /dev/null)
Wangs-MacBook-Pro:~ wxc575843$ docker checkpoint $cid
docker: 'checkpoint' is not a docker command.
See 'docker --help'.

Did you install the dependency as described in the [docs](https://github.com/docker/docker/blob/master/experimental/checkpoint-restore.md)? — Roman, Nov 02 '16 at 02:56
What version of docker do you use? what does it show when you do `docker --help`? — Rao, Nov 02 '16 at 04:10
My docker version is 1.12.0. docker --help command list the command I can use in docker. But it is not include docker checkpoint. — 王晓晨, Nov 03 '16 at 02:30
I see the doc of criu, but I am not sure if criu can install on OSX. — 王晓晨, Nov 03 '16 at 02:42
I install criu as the doc say. But the problem is not solved. — 王晓晨, Nov 03 '16 at 06:19

score 1 · Answer 1 · answered Dec 01 '17 at 15:05

Docker supports "checkpoint and restore" of a container, thanks to the CRIU integration with Docker. But, it is in the experimental mode so be careful.

The correct command to checkpoint a Docker container :

docker checkpoint create [OPTIONS] CONTAINER CHECKPOINT

Reference :

https://docs.docker.com/engine/reference/commandline/checkpoint_create/

An example of how to checkpoint and restore a container in a single host is given:

Container migration in Docker

score 0 · Answer 2 · answered Dec 01 '17 at 11:35

0

The client and daemon API must both be at least 1.25 to use this command. Or Docker Version 1.13 and above. Also, you need to enable experimental mode in your docker engine.

check this out: https://github.com/moby/moby/issues/30996

answered Dec 01 '17 at 11:35

Farhood Hosseinpour

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checkpoint is not a docker command

2 Answers2