In the systemd deployment documentation, the step of creating a new user is missing.

[huangsijun17]

Describe the bug
The step of adding users is missing in NGINX Prometheus Exporter with systemd-activated socket, which causes nginx_exporter.service to fail to start.

To reproduce
Follow the document NGINX Prometheus Exporter with systemd-activated socket:

1. Install the NGINX Prometheus Exporter binary to /usr/local/bin/nginx-prometheus-exporter
2. Copy nginx_exporter.service and nginx_exporter.socket to /etc/systemd/system/
3. Run systemctl daemon-reload
4. Run systemctl start nginx_exporter
5. Run systemctl status nginx_exporter to check the status of the service

Expected behavior
A clear and concise description of what you expected to happen.

Your environment

• CentOS Linux release 7.9.2009

Additional context

● nginx_exporter.service - NGINX Prometheus Exporter
   Loaded: loaded (/etc/systemd/system/nginx_exporter.service; enabled; vendor preset: disabled)
   Active: failed (Result: exit-code) since 五 2024-08-09 10:16:37 CST; 24s ago
  Process: 1597 ExecStart=/usr/local/bin/nginx-prometheus-exporter --nginx.scrape-uri=http://127.0.0.1:8080/stub_status --web.systemd-socket (code=exited, status=217/USER)
 Main PID: 1597 (code=exited, status=217/USER)

8月 09 10:16:37 localhost systemd[1]: Started NGINX Prometheus Exporter.
8月 09 10:16:37 localhost systemd[1597]: Failed at step USER spawning /usr/local/bin/nginx-prometheus-exporter: No such process
8月 09 10:16:37 localhost systemd[1]: nginx_exporter.service: main process exited, code=exited, status=217/USER
8月 09 10:16:37 localhost systemd[1]: Unit nginx_exporter.service entered failed state.
8月 09 10:16:37 localhost systemd[1]: nginx_exporter.service failed.

Others

The node_exporter - Systemd Unit mentioned that a new user node_exporter should be created.

[nginx-bot]

Hi @huangsijun17! Welcome to the project! 🎉

Thanks for opening this issue!
Be sure to check out our Contributing Guidelines and the Issue Lifecycle while you wait for someone on the team to take a look at this.