sites just stops working (502 bad gateway)

cr33p

Everything worked fine for years, nothing is changed. But now some of my sites giving me 504 bad gateway error, no big load on server, everything is fine. In logs i found this. 2022/08/21 21:19:24 [error] 6245#0: *10046 connect() to unix:/tmp/php-cgi-74.sock failed (11: Resource temporarily unavailable) while connecting to upstream, client: (my ip), server: mydomain.com, request: ＂GET / HTTP/2.0＂, upstream: ＂fastcgi://unix:/tmp/php-cgi-74.sock:＂, host: ＂mydomain.com＂

cr33p

wired thing is, some sites are working ok, no problems at all, but some of sites don't, 502 error everywhere.
how this can be ?
it's not DDoS or something, load average is fine.

aaPanel_Kern

cr33p
Hi. Please check if php74 is running properly and the logs are ok? You can find it in the app store.

cr33p

I've checked logs, sure php7.4 is working fine, also, tried to change it to php8 for some sites, same thing. Just 502 error, sometimes, 504.

i didn't touch anything, literally, i mean, everything worked just fine, no problem at all, no big load on server.
and now this happening, i don't know why and how can i fix it.

please help me with that!
Thanks in advance!

cr33p

and most wired thing, is that other sites are working ok!
problem just with few sites, it's really strange.

aaPanel_Kern

cr33p
This requires you to check the website's access log and error log.

cr33p

More updates! When i switch to php8 sites are working ok !
Look's like it's php 7.4 problem only, but why it comes from nowhere ?
I mean, everything is worked ok for year! With no problems at all!

Any suggestions ?

aaPanel_Kern

cr33p
It is recommended to consult the developer of the website

cr33p

it's not php problem, there is real simple one page sites

aaPanel_Kern

cr33p
No matter what the website page is, as long as there is a problem, please check the error log of the website and the log of php. Solve the problem based on the content of the log

cr33p

aaPanel_Kern
sure, you're right. but look at my first post. all i have in logs it that thing!
but now i have fix it. it's wired too.
how ? just deleted php 7.4 and install it once again.
now it's working again.
all i want to ask, what just happened ? and how can i avoid it in the future ?
it's some real strange bug or something, i don't know.
aapanel is running for years and we see it for the firsts time!
and yes, we try to reboot too, not helped.
only worked with php 7.4 reinstall. simple as that.

aaPanel_Kern

cr33p
Has the server restarted abnormally? What specific log shows

cr33p

fixed the problem. it was not aapanel.
we just have problem with one of our websites script.
all good now!

notelseit

cr33p is a prestashop site ?