Varnish 503 Service unavailable error

Tollef Fog Heen tfheen at
Fri Nov 27 10:28:06 CET 2009

]] Paras Fadte 


|   FetchError  showed  " *no backend connection* "  .  Would playing around
| with "backend probes" rectify this issue if backends are sometimes under
| load ?
|   or  would increasing the "connect_timeout"  help ?

«no backend connection» means just that – we failed to find a backend
connection in time, ran into the maximum number of connections or
similar.  If the problem is connect_timeout, increasing that further
might help, yes.

Tollef Fog Heen 
Redpill Linpro -- Changing the game!
t: +47 21 54 41 73

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