High: Introduces the docker agent to manage docker containers in an HA environment

[davidvossel]

Example:

'docker run --name="cluster-container" myimage sleep 10000'

would be executed and managed by the docker HA agent with these options
OCF_RESKEY_run_cmd="sleep 10000"
OCF_RESKEY_image="myimage"
OCF_RESKEY_container="cluster-container"

If the image did not exist locally and you want the image to be dynamically pulled from the docker registry on startup, the 'allow_pull' option lets this happen.

Also, custom 'docker run' args can be set using the 'run_opts' option.

-- Vossel

[davidvossel]

update monitor logic

[kikupotter]

hi ,i used this RA in my pacemaker +corosync cluster.
i created resource :
crm configure primitive sshd params image="centos:sshd" container=sshd run_cmd="/usr/sbin/sshd -D" run_opts="-it -p 20022:22"
and
[root@node02 ~]# docker images
REPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZE
centos sshd 3f7db58a4f75 9 hours ago 278.5 MB
centos centos6 d3d49dd114bd 6 days ago 212.7 MB

when i started resource sshd,then failed;
log:
Failed actions:
sshd_start_0 on node01 'not configured' (6): call=104, status=complete, last-rc-change='Fri Oct 3 02:14:05 2014', queued=34ms, exec=0ms
thx.

[davidvossel]

@kikupotter Ah yes. I bet there is a bug in how I detect the image when you set the image:tag. I can fix this!

It's great you're testing this agent. I'll fix the agent up, we'll both do some testing and then lets get this agent merged finally :)

[davidvossel]

@kikupotter Alright, the agent is updated. It should work for you now. Please checkout the new changes.

[davidvossel]

this agent should be ready at this point

[davidvossel]

It is important that we make this agent available as soon as possible. Without any further feedback, I'm planning on merging this agent the beginning of next week. Oct 13th