- HAProxy failing at random times (backend has no server available!)
- HAProxy check says server is down when it is up
- Health checking
해당 서버가 구동중이지 않을 경우 문제가 발생한다.
Message from syslogd@localhost at Jun 29 16:01:33 ... haproxy[8372]: backend websocket_backend has no server available! Message from syslogd@localhost at Jun 29 16:01:33 ... haproxy[8372]: backend websocket_backend has no server available! Message from syslogd@localhost at Jun 29 16:01:34 ... haproxy[8372]: backend nodejs_flashpolicy has no server available! Message from syslogd@localhost at Jun 29 16:01:34 ... haproxy[8372]: backend nodejs_flashpolicy has no server available! tail -f /var/log/haproxy/haproxy* ==> /var/log/haproxy/haproxy.notice.log <== Jun 29 16:01:33 localhost haproxy[8372]: Server websocket_backend/srv2 is DOWN, reason: Layer7 invalid response, check duration: 1ms. 0 active and 0 backup servers left. 0 sessions active, 0 requeued, 0 remaining in queue. Jun 29 16:01:33 localhost haproxy[8372]: backend websocket_backend has no server available!
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