How to ROLLING update to latest image with rancher-compose?

[dcowden]

I want to do a rolling upgrade for a service, updating its image to a new one, using rancher compose.

I have tried a number of things that do not work

• rancher-compose up --upgrade: not rolling (see How to redeploy after image push)
• rancher-compose upgrade my-service my-service: doesnt work. deletes my containers but doesnt add new ones
• rancher-compose upgrade my-service-1 my-service-2: makes me redefine a copy of my service just to upgrade images
• How could i build a container to do automatic rolling updates. Doesnt use rancher-compose.

What am i missing?

[denise]

Have you seen the docs on upgrades?

http://docs.rancher.com/rancher/rancher-compose/upgrading/

1. If you want to update the image, you should use the label io.rancher.container.pull_image: always so that whenever you launch a new container, it will always pull the new image.

Alternatively, you can add the option --pull to update the image on the hosts when doing the rancher-compose up --upgrade.

It also sounds like you’d want to do teh equivalent of an in-service upgrade, but have the new containers start before hte old containers are stopped.

http://docs.rancher.com/rancher/rancher-compose/upgrading/#starting-new-containers-before-stopping-old-containers