Changing PHP-Version for a specific domain leads to "Service unavailable"

[ehrenwert]

Hello,

if I change the PHP-Version for a specific website I'm getting the error 503.

The logs of the domain shows

[Mon Jan 11 18:29:04.580195 2016] [proxy:error] [pid 955:tid 140696963573504] (2)No such file or directory: AH02454: FCGI: attempt to connect to Unix domain socket /var/www/vhosts/system/example.com/php-fpm.sock (127.0.0.1) failed

[Mon Jan 11 18:29:04.580245 2016] [proxy:error] [pid 955:tid 140696963573504] AH00959: ap_proxy_connect_backend disabling worker for (127.0.0.1) for 60s

[Mon Jan 11 18:29:04.580255 2016] [proxy_fcgi:error] [pid 955:tid 140696963573504] [client 80.147.42.111:52702] AH01079: failed to make connection to backend: httpd-UDS

[Mon Jan 11 18:29:20.225330 2016] [proxy:error] [pid 955:tid 140696434284288] AH00940: FCGI: disabled connection for (127.0.0.1)

[Mon Jan 11 18:29:21.276915 2016] [proxy:error] [pid 955:tid 140696325179136] AH00940: FCGI: disabled connection for (127.0.0.1)

[Mon Jan 11 18:29:21.914266 2016] [proxy:error] [pid 955:tid 140696837134080] AH00940: FCGI: disabled connection for (127.0.0.1)

[Mon Jan 11 18:29:22.409266 2016] [proxy:error] [pid 955:tid 140696820348672] AH00940: FCGI: disabled connection for (127.0.0.1)

[Mon Jan 11 18:29:22.921921 2016] [proxy:error] [pid 955:tid 140696803563264] AH00940: FCGI: disabled connection for (127.0.0.1)

If I use FastCGI instead of FPM it works.

Is this an error in plesk or do I have to change my config?

 

[IgorG]

https://talk.plesk.com/threads/apache-fpm-crashing-from-time-to-time.336281/