“fatal: no pudo instalar gitlab-runner: el servicio gitlab-runner ya existe” Código de respuesta

fatal: no pudo instalar gitlab-runner: el servicio gitlab-runner ya existe

Rename the init file with

sudo mv /etc/systemd/system/gitlab-runner.service  /etc/systemd/system/gitlab-runner.service.bak
and execute again

sudo gitlab-runner install --user=my-user --working-directory=/home/my-user
cleanup the backup file

sudo rm /etc/systemd/system/gitlab-runner.service.bak