Yo,
Wandering what the limit is when it comes to how many containers I can run. Currently I’m running around 15 containers. What happens if this is increased to say, 40? Also, can docker containers go “idle” when not being used - to save system resources?
I’m running a i7-6700k Intel cpu. Doesn’t seem to be struggling at all with my current setup at least, maybe only when transcoding for Jellyfin.
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Run 19 but barely get over 5% usage even when transcoding 4K movies where the copyright has expired.
None, I use Nix instead. :P
None I use kubernetes with pods instead 😁
Zero. It seems like software is increasingly expecting to be deployed in a container though, so that probably won’t last forever.
While I understand the frustration of feeling like you’re being forced to adopt a particular process rather than being allowed to control your setup the way you see fit, the rapid proliferation of containers happened because they really do offer astonishing advantages over traditional methods of software development.
It was a total game changer for me at least. Gone are the days of me spending an entire weekend day upgrading applications and eventually being scared to patch services. I also try things out I wouldn’t have. I can have thee service up in a few minutes
FWIW, I switched to Linux due to the amazing container support and haven’t looked back in terms of running software. The easy set up, tear down, and common monitoring makes it far more convenient to host stuff on Linux.
Yeah, my own experience of switching to containers was certainly frustrating at first because I was so used to doing things the old way, but once it clicked I couldn’t believe how much easier it made things. I used to block out several days for the trial and error it would take getting some new service to work properly. Now I’ll have stuff up and running in 5 minutes. It’s insane.
I like containers it makes shit very convenient. I dont give a fuck about the specifics of some service i copy paste a docker compose and im off to the races.
Remember dealing with conflicting packages and conf files or updating dozens of vms? I sure do, and I don’t miss it at all
And then it doesn’t work on one VM and it takes you three days to figure out that VM had a slightly different version of a library and that makes the app segfault.
A Docker container is essentially a process running on your machine. Just like any other process. It can be idle, stopped or hogging the CPU. You can use Docker constraints to limit resource use if you want to, memory, CPU and network to name a few.
So, can you run 40 processes?
Very likely. Probably 400 or 4000, depending on CPU usage and memory.
I ran that particular CPU with 64 GB of RAM and used it to run multiple virtual machines, my main debian desktop and a VM specifically as a docker host, running dozens of instances of Google Chrome without ever noticing it slowing down.
Then the power cable shortened out and life was never the same. That was six months ago, the machine was a late 2015 iMac running macos and VMware Fusion.
I’ll add here that the “docker top” command allows you to easily see what kind of resources your containers are using.
If you prefer a UI, Dozzle runs as a container, is super lightweight, requires basically no setup, and makes it very easy to see your docker resource usage.
Very handy, thanks!
Also try Lazydocker, I think it’s far superior to Dozzle for features. If you run it in a folder with a docker-compose.yml, it’ll just show the processes from that set of containers, if you run it in any other folder it’ll show all your docker containers.
