We're having issues with a client's Wordpress web site that we've 'adopted'. This site worked fine but we've installed a new theme and we're having issues with it. It works fine on our testing server which happens to be a Cpanel-based host. However, when placed on our live server (Plesk) it throws errors on and off (a bit randomly, it seems).
We're getting sporadic Internal Server 500 errors which, when we look at the logs, shows us this:
(104)Connection reset by peer: mod_fcgid: error reading data from FastCGI server
We've tried switching from Fast CGI, to just CGI and FPM but then we get this error:
Unable to allocate shared memory segment of 67108864 bytes: mmap: Cannot allocate memory (12)
Lots of Googling has been done but we've not found a solution yet.
OS: CentOS 6.10 (Final)
Product: Plesk Onyx
Version: 17.8.11 Update #38,
CPU Intel(R) Xeon(R) CPU E5649 @ 2.53GHz (2 core(s))
3GB RAM (looking at it now, it's using 35% of that)
Any ideas we can look at would be appreciated please!