Test plan for nginx-module-vts component upgrade

Copy the test plan below to a comment of the merge request that upgrades the component.

Test plan

• Checked nginx-vts module changelog for potential breaking changes.
• Started a new pipeline and trigger Trigger::ee-package.
• Started a new pipeline on dev.gitlab.org for the branch.
  • Rebase to tip of dev/master if needed.
• Test the library:

  • Confirm nginx has vts support

    • The command /opt/gitlab/embedded/sbin/nginx -V should include --add-module=/opt/gitlab/src/nginx_modules/nginx-module-vts in the return.

  • Check the version of the vts module.

    • Create a minimal nginx.conf:
    worker_processes  1;
    events {
        worker_connections  1024;
    }
    http {
        vhost_traffic_status_zone;
        default_type  application/octet-stream;
        sendfile        on;
        keepalive_timeout  65;
        server {
            listen       80;
            server_name localhost;
            location /status {
                vhost_traffic_status_display;
                vhost_traffic_status_display_format html;
            }
        }
    }

    • Start nginx with the configuration with /opt/gitlab/embedded/sbin/nginx -c nginx.conf
    • Check the version with curl -ssL localhost:80/status/format/json | jq '.moduleVersion'

  • function

    • Follow the instructions to configure the VTS module.
    • Run curl -s -g "http://localhost:9090/api/v1/query?query=rate(nginx_vts_server_request_seconds_total[5m])"
    • The command should return "status":"success"...