How to SSH into a seperate Gitlab instance's runner

I have two Gitlab runner instances on my server, both of which have a gitlab runner. They are both named "gitlab-runner". Whenever I SSH into a gitlab runner using the command sudo su - gitlab-runner I always get into the first instance's runner. How do I get access to the other one?

Solution

Based on my understanding, you are running two gitlab runners in the same server. I would modify the /etc/gitlab-runner/config.toml file and assign the runners different names.

vi /etc/gitlab-runner/config.toml

For example,

[[runners]]
  name = "gitlab-runner-1"
  url = "https://your.url.com/"
  token = "your-token"
  executor = "docker"

  [runners.docker]
    tls_verify = false
    image = "openjdk:11-jdk-slim-sid"
    privileged = false
    disable_entrypoint_overwrite = false
    oom_kill_disable = false
    disable_cache = false
    volumes = ["/cache"]
    shm_size = 0
    limit = 1

[[runners]]
  name = "gitlab-runner-2"
  url = "https://your.url.com/"
  token = "your-token"
  executor = "docker"

  [runners.docker]
    tls_verify = false
    image = "openjdk:11-jdk-slim-sid"
    privileged = false
    disable_entrypoint_overwrite = false
    oom_kill_disable = false
    disable_cache = false
    volumes = ["/cache"]
    shm_size = 0
    limit = 1

After modifying the config, you will have to restart the gitlab-runner. The following command may help.

service gitlab-runner restart