Hi I am also getting same error when try to run jobs from GitLab. I have installed GitLab runner in other machine and registered successfully with GitLab. I have placed signed certificate downloaded it from GitLab machine placed under GitLab-runner/certs/domainname.crt. Could someone let us know what is the problem here and provide solution quickly.
Running with gitlab-runner 12.10.3 (2910048c)
on xxxxxx-runner xxxxxxjb
Preparing the “shell” executor
Running on xxxxxxxxxx…
Getting source from Git repository
Fetching changes with git depth set to 50…
Initialized empty Git repository in /home/gitlab-runner/builds/xxxxxxx/0/gitlabadmin/xxxxxx/.git/
Created fresh repository.
fatal: unable to access ‘https://gitlab-ci-token:[MASKED]@xxxxxxxxxxx/gitlabadmin/xxxxx.git/’: Peer’s Certificate issuer is not recognized.
Uploading artifacts for failed job
ERROR: Job failed: exit status 1