Issue Error : upstream timed out (110: Connection timed out) while SSL handshaking to upstream

[nicolas2212]

Server operating system version

Debian 10.12

Plesk version and microupdate number

18.0.44

About two times per month my websites are done. When I check nginx log I have a lot of error stated as "upstream timed out (110: Connection timed out) while SSL handshaking to upstream"

I need to reboot the server to got a normal service again. If I restart only nginx or apache, the issue is not solve.

I search a lot on the web in order to find something....

OS: Debian 10.12 Plesk Obsidian 18.0.44
CPU Intel(R) Xeon(R) CPU E5-2670 0 @ 2.60GHz (4 core(s)) Version
Plesk Obsidian v18.0.44_build1800220614.18
os_Debian 10.0

Thank you!

 

[Maarten.]

Please have a look at this:

Website is inaccessible: 504 Gateway Timeout

Applicable to: Plesk for Linux Symptoms Plesk hosted website is inaccessible: PLESK_INFO: 504 Gateway Time-out or PLESK_INFO: 502 Bad gateway In /var/www/vhosts/example.com/logs/proxy_err...

web.archive.org

Resolved - nginx Fails, Bringing Site Down

Hi, We had a client's site go down, and investigation showed the issue to be with nginx. The log showed multiple entries like this: 3619#0: *22389 upstream timed out (110: Connection timed out) while SSL handshaking to upstream To get the site back up while troubleshooting, we tried to...

talk.plesk.com

Also, check if there are errors in the Web Application Firewall:
Subscription -> Web Application Firewall -> Error Log File

 

[nicolas2212]

Hello
Thanks for your reply, made some updated stated in the post you send.

I will update the post in case of new error.

Nicolas