100% with upstream / backup server

Matthias Rieber ml-nginx at zu-con.org
Tue Jan 26 19:39:02 MSK 2010


I've noticed a strange issue. I've a configuration like:

upstream _backend {
   server down;
   server down;
   server backup;

the purpose is to disable all backends and switch to some kind of 
maintenance mode.

Howerver, with this config, all workers have after the first requests a 
very high cpu load and nginx is not properly answering requests anymore.
Whenn I kill the workers, they reappear with the high load.

I such a setup not allowed?

kind regards,


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