I was previously using mod_fastcgi and had issues as described here with configurations getting ignored. After moving to mod_fcgid, I've seen a whole new issue which is causing issues for all sites hosted on the server.

At random intervals throughout the day, the server outputs a "Server too busy" message to requests and I'm not sure what is outputting it- fcgid, apache2 or varnish. Under what circumstances would this message usually show and what are my options to prevent it from happening again?


  • What does the rest of the message say? Commented Mar 3, 2014 at 16:29
  • That's literately it, with a 503 code!
    – MrNorm
    Commented Mar 4, 2014 at 10:29
  • Didn't you check the error log? Commented Mar 4, 2014 at 10:31

2 Answers 2


Checking out varnish and apache2 showed that they both returned 200 OK codes. The issue was actually load balancer on our hosting providers network intercepting responses.


Give Apache a bigger RAM allowance! Apache 2.2 defaults to a very small amount so you would probably want to increase it (Unless you have a terrible PC)!


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