Resolved NGINX 502 bad gateway after activating fail2ban

[LaurentR2D2]

OS‪CentOS Linux 7.4.1708 (Core)‬ProduitPlesk Onyx
Version 17.5.3 Mise à jour n° 23, dernière mise à jour le 2 Oct 2017 03:51

Hello,

I can't activate fail2ban, since I always get a NGINX 502 bad gateway error on my websites when I do it. Should I reinstall it like it was suggested for Debian/Ubuntu systems ? ModSecurity is activated with Atomic Basic ModSecurity, and intermediate settings.

Thank you

 

[UFHH01]

Hi LaurentR2D2,

did you probably forget to insert "localhost" your server IP's on your server to the whitelist of Fail2Ban?

Should I reinstall it like it was suggested for Debian/Ubuntu systems ?

This is never a bad idea, to solve ( possible ) issues/errors/problems, but from my point of view, you should rather investigate the root cause of your issue, as you might experience the very same issues/errors/problems again afterwards.

 

[LaurentR2D2]

Hi LaurentR2D2,

did you probably forget to insert "localhost" your server IP's on your server to the whitelist of Fail2Ban?


This is never a bad idea, to solve ( possible ) issues/errors/problems, but from my point of view, you should rather investigate the root cause of your issue, as you might experience the very same issues/errors/problems again afterwards.

I've added the ip of my server, and the problem is solved. There was 127.0.0.1/8 in the whitelist, but obviously it was not enough. Thank you