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According to your log, the problem is related to rabbitmq server. The controller can not connect to rabbitmq maybe due to your credental problem or networking issues.

At first check whether rabbitmq is up or down:

rabbitmqctl status

If the service was at runing state, and the output be something like here, go to the next step. If not, try to start this service.

After you sure that the rabbitmq server is start, you should test the rabbitmq authentication. So, to make sure about authentication mechanism, change the RabbitMQ guest password:

sudo rabbitmqctl change_password guest password

Restart RabbitMQ service:

sudo service rabbitmq restart

If the problem won't fixed, then execute:

sudo rabbitmqctl change-password guest guest

Restart it again:

sudo service rabbitmq restart

If again the problem wont fixed by the above steps, check your firewall rules:

iptables-save | grep 5672

Make sure that the port is open and is listen.

netstat -lntp | grep 5672

According to your log, the problem is related to rabbitmq server. The controller can not connect to rabbitmq maybe due to your credental problem or networking issues.

At first check whether rabbitmq is up or down:

rabbitmqctl status

If the service was at runing state, and the output be something like here, go to the next step. If not, try to start this service.

After you sure that the rabbitmq server is start, you should test the rabbitmq authentication. So, to make sure about authentication mechanism, change the RabbitMQ guest password:

sudo rabbitmqctl change_password guest password

Restart RabbitMQ service:

sudo service rabbitmq restart

If the problem won't fixed, didn't fix, then execute:

sudo rabbitmqctl change-password guest guest

Restart it again:

sudo service rabbitmq restart

If again the problem wont didn't fixed by the above steps, check your firewall rules:

iptables-save | grep 5672

Make sure that the port is open and is listen.

netstat -lntp | grep 5672