How to take actions on multiple docker containers at once
from luthis@lemmy.nz to linux@lemmy.ml on 28 Nov 2023 08:01
https://lemmy.nz/post/3841751
from luthis@lemmy.nz to linux@lemmy.ml on 28 Nov 2023 08:01
https://lemmy.nz/post/3841751
Again, please tell me if there is a better way to do this.
While testing docker, frequently I need to start/stop/rm containers. I got real sick of having to ls them and copy paste the container ID.
Using this alias, I just have to remember a single part of the name of the container, and I will get the container IDs that can then be included as part of another command:
$ alias dcl='_dcl(){ docker container ls -aq -f name="$1";}; _dcl'
$ dcl snikket
b3fcbc808cc9
1947885fbb24
054d67d2e8b9
d8fe9df5f61f
So now that I’m getting a list of IDs, I can easily, for example, pause all of them:
$ docker container pause $( dcl snikket ) Error response from daemon: container is not running Error response from daemon: container is not running Error response from daemon: container is not running Error response from daemon: container is not running
The containers weren’t actually running, but this shows the alias working.
dcl obviously stands for ‘docker container ls’
threaded - newest
You can of course do it this way too, it’s just extra typing:
docker container stop $(docker container ls -qf name=snikket)If the containers are related you could use docker-compose, which has commands to stop / restart/ remove all containers at once.
Cool, didn’t know that!
Just tested, so you have to cd to the directory with the docker-compose.yml file in it first
you can also use the -f option to specify the compose file without going to it.
I use Compose even when I have a single container to run because I can put all the config bits I need into a file and can then do most of the work without remembering lots of command line options and often without even needing to mention the service name directly.
Same. I can’t remember the last time I started a docker container without a compose file.
I keep a docker directory in my home dir that has a directory for each docker container/stack in a compose file. Taking down a container looks like so.
Imo, the best way to work with docker.
i do the exact same
This works but I’d just create a function and use that instead of creating an alias that creates a function and then calls itself.
if your containers are created with a docker compose file you can use docker-compose to target them all
Is there a way to do this without cd-ing to the directory with the compose file first?
You can use -f /path/to/compose.yaml to call it from wherever you like.
You can use the container names to address containers. Whether this is a randomly generated name (docker run… with no --name flag), the compose working dir and service name, or the compose container_name var.
I also rarely use the container command.
dockeris sufficient, ordocker compose …while in the working dir of a given compose stack.I often just do
docker ps | awk "{print $1}" | xargs docker stopAdd some filtering in there and you’re golden
How tf do you remember that lol, I’m always amazed by CLI focused people being able to remember so much!
I think it has to do with creativity!
The CLI tools are just small simple tools. The power comes from having the understanding of how each tool works and how they can be combined.
I don’t remember this string of commands, I know docker, awk and xargs. When I need this, that is the solution I always end up with.
Dude, I use the CLI all day, every day and I can’t freakin remember half the commands I need.
If it’s something I use often, I’ll make an alias even if it’s just so I can run ‘alias’ in the terminal to get a list of things I use often.
This is what I do as well
Why create the function
_dcl()?I needed a way to pass an argument into the command so it can be used in name=“$1”
you could instead do:
dcl() { docker container ls -aq -f name="$1" }in
bashrcor wherever you’re setting this up.My better way is just using Portainer, select some containers and hit the stop button.
If I eventually get around to using a GUI, I’ll check out portainer
I don’t know if this works in
docker(usually there is 1:1 equivalency between the two), but withpodmanyou can do something like:man podman-stoptells us:--filter, -f=filter Filter what containers are going to be stopped. Multiple filters can be given with multiple uses of the --filter flag. Filters with the same key work inclusive with the only exception being label which is exclusive. Filters with different keys always work exclusive.Unfortunately no filter here
I’m using docker packages for Doom Emacs. The main one is docker.el. On top of being faster and easier to use than the cli, you can also do some pretty neat stuff like use dired+tramp to browse files and open them in Emacs.
Just a few shortcuts that may help:
docker psis an alias fordocker container lsAs someone else suggested though, docker compose is probably best suited for this job, but hopefully this helps in other situations.