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gerhard/shell.sh

Created June 14, 2012 11:59
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nginx upstream fail_timeout not respected
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shell.sh
$ time curl -I "$uri" &> /dev/null
# when routed to the host that is up
curl -I "$uri" &> /dev/null 0.00s user 0.00s system 2% cpu 0.299 total
# when routed to the host that is down. Should this be ~3s as per fail_timeout & max_fails?
curl -I "$uri" &> /dev/null 0.00s user 0.00s system 0% cpu 21.304 total
Raw
upstream.conf.sh
upstream master_apache {
server master-local max_fails=3 fail_timeout=1s; # up and available
server slave-local max_fails=3 fail_timeout=1s; # temporarily down
keepalive 4;
}
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gerhard commented Jun 14, 2012

The servers configured in the upstream are saying: "consider me down if I fail 3 times within 1s". Upping the fail_timeout to 30s and setting a 2s proxy_connect_timeout did the trick.

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