502 Bad Gateway on all websites after enabling nginx on server with fail2ban

Refers to:

  • Plesk 12.5 for Linux
  • Plesk Onyx for Linux
  • Plesk 12.0 for Linux

Created:

2016-11-16 12:39:00 UTC

Modified:

2017-01-18 15:41:42 UTC

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502 Bad Gateway on all websites after enabling nginx on server with fail2ban

Symptoms

After enabling nginx on server, all websites are showing 502 Bad Gateway error.

Fail2ban is installed on server.

Cause

Caused by internal issue #PPP-18023 . Issue was fixed in Plesk 12.5 MU#7 .

Resolution

  1. Apply latest Plesk microupdates .

  2. In Plesk > Tools & Settings > IP Addresses click Re-read IP button to add server IP addresses to Trusted list of Fail2Ban.

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