[Solved] Gitlab: Maximum number of ci instance level variables (25) exceeded

1. Start Gitlab Rails Console

sudo gitlab-rails console

Ref: https://docs.gitlab.com/ee/administration/operations/rails_console.html#starting-a-rails-console-session

1. Run following command to increase instance level variables

Plan.default.actual_limits.update!(ci_instance_level_variables: 300)

Wait for sometime for the command to run.

Ref: https://docs.gitlab.com/ee/administration/instance_limits.html

1. Exist from Rails Console

exit

Type exit command and press enter