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Arthur
Arthur

Reputation: 3473

Multiple GitLab Runner Docker instances at one host?

I need to configure GitLab runner to run multiple shared runners in Docker containers at one server (host).

So, I registered two runners with gitlab-runner register as shared runners with same tag.

But there is an issue now - only one of them is currently using and all other tasks are waiting in Pending status until the first runner is stopped. So, second runner instance is not using, until first instance will be stopped.

All tasks have same tag.

How to run multiple runners at same server host?

Upvotes: 2

Views: 6950

Answers (2)

Jürgen Brandstetter
Jürgen Brandstetter

Reputation: 7324

To utilize all your CPU cores set concurrent in /etc/gitlab-runner/config.toml (when running as root) or ~/.gitlab-runner/config.toml (when running as non root) to the number of your CPUs.

You can find the number of CPUs like this: grep -c ^processor /proc/cpuinfo.

In my case the config.toml says concurrent = 8

Citations:

Upvotes: 0

djuarezg
djuarezg

Reputation: 2541

By default concurrent is 1, so unless you increase it your runner will just use one registration at a time: https://docs.gitlab.com/runner/configuration/advanced-configuration.html#the-global-section

limits how many jobs globally can be run concurrently. The most upper limit of jobs using all defined runners. 0 does not mean unlimited

Upvotes: 4

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