nginx DNS doesn't update the upstream IP

Grzegorz Kulewski gk at
Wed Apr 14 16:55:38 UTC 2021

W dniu 14.04.2021 o 18:48, kay pisze:
> We tested with a default "resolver;" and "resolver 30s;"
> options. Both keep using the outdated IP address until you run "nginx -s
> reload". The upstream is AWS LoadBalancer, which changes IPs quite
> frequently.
> I'm using nginx 1.19.3. Any clue what could be wrong?

You should probably paste at least proxy_pass and upstream directives from your configuration.

Please note that nginx open source does not dynamically resolve hosts from server directives in upstream - only those from proxy_pass.

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