Starting on October 19, 2021, we will enable single-sign-on for our Plesk Support Center to provide a seamless login/account experience. This implies that you’ll be able to use a single account across any of our web-facing properties.
To be prepared for this change and to avoid the need to register during your next ticket submission after the change, we encourage you to create an account here before October 19 using the same email address as your current Zendesk login (support account). It’s essential that you use the same email address on our support center to ensure that your tickets stay attached to the same account. You will continue to use ZenDesk authentication until we switch over to single-sign-on on October 19th.

Articles in this section

See more

All websites/webmails on Plesk for Linux server show error 502 every hour or even constantly

Avatar
Mikhail Shport
Updated
Follow
Plesk for Linux kb: fixed kb: bug ext: sslit

Applicable to:

  • Plesk for Linux

Symptoms

  • On a Plesk for Linux server, all websites/webmails show error 502 every hour or even constantly.

  • Apache restarts repeatedly for a while:

    # journalctl -u httpd | grep "Stopping\|Starting"
    plesk.example.com systemd[1]: Stopping The Apache HTTP Server...
    plesk.example.com systemd[1]: Starting The Apache HTTP Server...
    plesk.example.com systemd[1]: Stopping The Apache HTTP Server...
    plesk.example.com systemd[1]: Starting The Apache HTTP Server...
    plesk.example.com systemd[1]: Stopping The Apache HTTP Server...
    plesk.example.com systemd[1]: Starting The Apache HTTP Server...
    ...

  • SSL It! extension was updated to version 1.8.4-1208.

Cause

Product issue:

  • #EXTSSLIT-1645 "The extension no longer reassigns an already issued Let’s Encrypt certificate to a domain every hour if its mail component should not be secured."
    Fixed in:

Resolution

Please consider updating your server:

Comments

2 comments

Sort by Date Votes
  • Avatar
    Lrnt

    Thank you for this! That helps me a lot because I had nginx 502 Bad Gateway each hour at 58 minutes.

    But I updated the SSL It! Extension since v1.8.5-1210 seems to resolv this issue: 

    1.8.5 (12 June 2021)

    • [-] The extension no longer reassigns an already issued Let's Encrypt certificate to a domain every hour if its mail component should not be secured. (EXTSSLIT-1645)
    0
    Comment actions Permalink
  • Avatar
    Simon Wick

    Despite the update, I still have the problem. I use the LiteSpeed ​​extension as a web server instead of Apache. Does that have an impact? Are there other approaches? Thanks for the help! All websites are offline for about 1 minute every hour ...

    0
    Comment actions Permalink

Please sign in to leave a comment.

Have more questions? Submit a request

Related articles