URL not present during startup

[Wim]

Please use this template for troubleshooting questions.

My issue:

url not present during startup prevents the start of nginx

How I encountered the problem:

push to url configured, but system is tempory down. Should warn only and (re)start other url and services

Solutions I’ve tried:

--no-block during start

Version of NGINX or NGINX adjacent software (e.g. NGINX Gateway Fabric):

Most recent (just started

Deployment environment:

na

Minimal NGINX config to reproduce your issue (preferably running on https://tech-playground.com/playgrounds/nginx for ease of debugging, and if not as a code block): (Tip → Run nginx -T to print your entire NGINX config to your terminal.)

NGINX access/error log: (Tip → You can usually find the logs in the /var/log/nginx directory.)

[davemc]

Fair warning, I am not an NGINX Guru. This might point you in a direction to solve the problem.

First, it is a common problem. NGINX by default performs DNS resolution at startup. If the hostname (upstream or proxy_pass blocks) can’t be resolved, it will report “host not found in upstream”.

The way I know of to try and resolve this is using a variable in proxy_pass and a resolver in the configuration. Resolver will tell NGINX where to look for DNS records, using the variable, which tells NGINX to resolve on the fly.

Check some of the docs: Module ngx_http_core_module