Hi,
We have nginx configured as reverse proxy for our application servers. It also loadbalances connections to the two tomcat application servers using an upstream.
Below is our upstream configuration:
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upstream prod {
sticky name=prodx path=/pc;
server 10.x.x.x:8084 ;
server 10.x.x.x:8084 ;
}
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We are noticing frequent connection timed out errors in the debug error log and also our users are getting session time outs.
Below are the errors we noted in the logs:
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2018/02/27 13:13:01 [debug] 25552#0: *1365757 input buf 0000555555AB40C0 4096
2018/02/27 13:13:01 [debug] 25552#0: *1365757 malloc: 0000555555AB50D0:4096
2018/02/27 13:13:01 [debug] 25552#0: *1365757 readv: 1, last:4096
2018/02/27 13:13:01 [debug] 25552#0: *1365757 pipe recv chain: 325
2018/02/27 13:13:01 [debug] 25552#0: *1365757 readv: 1, last:3771
2018/02/27 13:13:01 [debug] 25552#0: *1365757 readv() not ready (11: Resource temporarily unavailable)
2018/02/27 13:13:01 [debug] 25552#0: *1365757 pipe recv chain: -2
2018/02/27 13:13:01 [debug] 25552#0: *1365757 pipe buf in s:1 t:1 f:0 0000555555B435C0, pos 0000555555B43703, size: 3773 file: 0, size: 0
2018/02/27 13:13:01 [debug] 25552#0: *1365757 pipe buf in s:1 t:1 f:0 0000555555AB40C0, pos 0000555555AB40C0, size: 4096 file: 0, size: 0
2018/02/27 13:13:01 [debug] 25552#0: *1365757 pipe buf free s:0 t:1 f:0 0000555555AB50D0, pos 0000555555AB50D0, size: 325 file: 0, size: 0
2018/02/27 13:13:01 [debug] 25552#0: *1365757 pipe length: 327
.
.
.
.
2018/02/27 13:27:15 [debug] 25553#0: *1398223 SSL_read: -1
2018/02/27 13:27:15 [debug] 25553#0: *1398223 SSL_get_error: 2
2018/02/27 13:27:15 [debug] 25553#0: *1398223 free: 0000555555B4FE00
2018/02/27 13:27:15 [debug] 25552#0: *1404063 event timer del: 31: 1519756035496
2018/02/27 13:27:15 [debug] 25552#0: *1404063 http wait request handler
2018/02/27 13:27:15 [info] 25552#0: *1404063 client timed out (110: Connection timed out) while waiting for request, client: 108.254.97.167, server: 0.0.0.0:443
2018/02/27 13:27:15 [debug] 25552#0: *1404063 close http connection: 31
2018/02/27 13:27:15 [debug] 25552#0: *1404063 SSL_shutdown: 1
2018/02/27 13:27:15 [debug] 25552#0: *1404063 reusable connection: 0
2018/02/27 13:27:15 [debug] 25552#0: *1404063 free: 0000000000000000
2018/02/27 13:27:15 [debug] 25552#0: *1404063 free: 0000555555B17DD0, unused: 16
2018/02/25 15:39:55 [error] 3640#0: *5271942 upstream timed out (110: Connection timed out) while connecting to upstream, client: X.X.X.X, server: Testtemp.com, request: "GET /mediawiki-1.16.0beta2/skins/common/quickbar.css HTTP/1.1", upstream: "http://x.x.x.x:80/mediawiki-1.16.0beta2/skins/common/quickbar.css", host: "x.x.x.x"
2018/02/25 15:39:55 [error] 3639#0: *5271969 upstream timed out (110: Connection timed out) while connecting to upstream, client: x.x.x.x, server: Testtemp.com, request: "GET /phpnuke-5.4/moin_static186/classic/css/projection.css HTTP/1.1", upstream: "http://x.x.x.x:80/phpnuke-5.4/moin_static186/classic/css/projection.css", host: "x.x.x.x"
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Any suggestions in the nginx configuration to remediate this issue will be greatly appreciated.
Thanks in advance.
