I am running an active-active RabbitMQ cluster, and as recommended by "High Availability in RabbitMQ: solving part of the puzzle" (<a href="http://www.rabbitmq.com/blog/2011/10/25/high-availability-in-rabbitmq-solving-part-of-the-puzzle/">http://www.rabbitmq.com/blog/2011/10/25/high-availability-in-rabbitmq-solving-part-of-the-puzzle/</a>), I'm connecting to the cluster of message brokers via an haproxy load balancer. Everything was working fine until one of the nodes failed, after which it seemed that the haproxy load balancer did not appear to detect the failed node. Clients would initiate connections and often just hang, I assume because the load balancer is forwarding them on to the failed node. As a workaround, I've reconfigured clients to connect directly to a working node, and everything returned to normal, so I am suspecting my haproxy configuration is not correct.<div>
<br></div><div>Does anyone have experience using haproxy as a load balancer for RabbitMQ, and if so, can you share your config or take a look at my configuration and let me know if you have any recommendations?</div><div>
<br></div><div>haproxy.cfg:</div><div><div>global</div><div> log 127.0.0.1 local0</div><div> log 127.0.0.1 local1 notice</div><div> maxconn 4096</div><div> user haproxy</div><div> group haproxy</div>
<div> daemon</div><div><br></div><div>defaults</div><div> log global</div><div> mode http</div><div> option dontlognull</div><div> retries 3</div><div> option redispatch</div>
<div> maxconn 2000</div><div> contimeout 5000</div><div> clitimeout 50000</div><div> srvtimeout 50000</div><div><br></div><div>listen rabbitmq <a href="http://0.0.0.0:5672">0.0.0.0:5672</a></div>
<div> mode tcp</div><div> stats enable</div><div> balance roundrobin</div><div> option forwardfor</div><div> option tcpka</div><div> server rabbit01 <a href="http://1.2.3.4:5672">1.2.3.4:5672</a> check inter 5000</div>
<div> server rabbit02 <a href="http://1.2.3.5:5672">1.2.3.5:5672</a> check inter 5000</div><div> server rabbit03 <a href="http://1.2.3.6:5672">1.2.3.6:5672</a> check inter 5000</div></div>