LinuxQuestions.org - Apache proxy issue

Hi,

I'm suddenly getting 503 service temporary unavailable errors on my proxy server (debian 6 + apache).

Rebooting the server fixes this issue but just for a limited time (few minutes).

Error log of a example site on this server:

Code:

[Wed Aug 13 12:54:11 2014] [error] (24)Too many open files: proxy: HTTPS: error creating fam 2 socket for target xxx.xxx.xxx.xxx

[Wed Aug 13 12:54:11 2014] [error] ap_proxy_connect_backend disabling worker for (xxx.xxx.xxx.xxx)

[Wed Aug 13 13:01:41 2014] [error] proxy: HTTPS: disabled connection for (xxx.xxx.xxx.xxx)

any ideas?