We can do this with docker compose v3 now. https://docs.docker.com/engine/swarm/#feature-highlights https://docs.docker.com/compose/compose-file/ You have to initialize the swarm cluster using command $ docker swarm init You can add more nodes as worker or manager – https://docs.docker.com/engine/swarm/join-nodes/ Once you have your both nodes added to the cluster, pass your compose v3 i.e deployment file to create a … Read more
Just for future reference: Docker 1.13 added a –force flag to service update: –force: Force update even if no changes require it Use it as in: docker service update –force service_name
Updates: 2018/04/17: http://docker-sync.io/ 2018/03/18: Check skaffold from GoogleCloudPlatform. Original post: There is something that I am not getting when developing an application while using docker containers. It’s ok, this is not something trivial. Try to see the big picture, it’s about creating a Development Pipeline (or CI/CD Pipeline if you like to use the terms … Read more
You can execute commands by filtering container name without needing to pass the entire swarm container hash, just by the service name. Like this: docker exec $(docker ps -q -f name=servicename) ls
dockerd – The Docker daemon itself. The highest level component in your list and also the only ‘Docker’ product listed. Provides all the nice UX features of Docker. (docker-)containerd – Also a daemon, listening on a Unix socket, exposes gRPC endpoints. Handles all the low-level container management tasks, storage, image distribution, network attachment, etc… (docker-)containerd-ctr … Read more
Conceptually, both files serve the same purpose – deployment and configuration of your containers on docker engines. Docker-compose tool was created first and its purpose is “for defining and running multi-container Docker applications” on a single docker engine. (see docker compose overview ) You use docker-compose up to create/update your containers, networks, volumes and so … Read more
I installed Docker from the snap package and after a while I decided to move to apt repository installation. I was facing the same problem and using sudo aa-remove-unknown worked for me. So no reinstallation of Apparmor was needed.
I found one handy solution to the problem. docker service ps –no-trunc {serviceName} which will show errors with downloading images, mounting nfs volumes amongst others. ———————- UPDATE Not all errors can be found in the way described above. Another usefull tool is looking at the docker deamon logs which can be done the follwing way … Read more
It will probably help to start with a few definitions: docker-compose: Command used to configure and manage a group of related containers. It is a frontend to the same api’s used by the docker cli, so you can reproduce it’s behavior with commands like docker run. docker-compose.yml: Definition file for a group of containers, used … Read more
Doing docker stack deploy again for me is the way to go to update services. As Francois’ Answer, and also in my own experience, doing so updates only services that need to be updated. But sometimes, it seems easier when testing stuff to only restart a single service. In my case, I had to clear … Read more