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Question Error 503 after changing to "FPM application served by..."

tanasis

Regular Pleskian
Server operating system version
AlmaLinux 8.10
Plesk version and microupdate number
Version 18.0.61 Update #5
Hello,
on my webserver I had high traffic websites with PHP as "Dedicated FPM application served by Apache / nginx" and I had high CPU.
I changed 4 of them to "FPM application served by Apache / nginx" (no Dedicated) and then some sites start showing Error 503.
I think to change the PHP-FPM settings globally, I'll have to increase the values.

Where can I find the globally settings in Plesk?

1717615794753.png
 
The only way to raise PHP-FPM children is from Service Plans? How many pm.maxchildren/request apache can he handle?
 
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