消息队列Rabbitmq

1. 启动

rabbitmq-server &

2. 队列重置（清空队列、用户等）

rabbitmqctl stop_app
rabbitmqctl reset
rabbitmqctl stop

3. 关闭

rabbitmqctl stop

4. 列举所有用户

rabbitmqctl list_users

5. 列举所有队列

rabbitmqctl list_queues

6. 添加用户

rabbitmqctl add_user user_name user_passwd

7. 设置用户角色为管理员

rabbitmqctl set_user_tags user_name administrator

8. 权限设置

rabbitmqctl set_permissions -p / user_name ".*" ".*" ".*"
6,7,8三步操作举例（添加用户admin）

sudo rabbitmqctl add_user admin admin
sudo rabbitmqctl set_user_tags admin administrator
sudo rabbitmqctl set_permissions -p / admin ".*" ".*" ".*"

9. 查看状态

rabbitmqctl status

10.安装 RabbitMQWeb管理插件

rabbitmq-plugins enable rabbitmq_management
可以利用http://ip:15672查看界面状态

11.疑难杂症

11.1 症状：启动后出现

Error: unable to connect to node 'rabbit@idcp-mq010177080030': nodedown
Error in log handler
====================
Event: {error,<0.9.0>,
{<0.451.0>,
"** Connection attempt from disallowed node ~w ** ~n",
['rabbitmq-cli-3355@idcp-mq010177080030']}}
Error: function_clause

破解

重启服务

sudo rabbitmq-server restart

11.2 无法正常启动rabbitmq-server

Error: unable to connect to node rabbit@nu5i12294: nodedown
ERROR: epmd error for host nu5i12294: address (cannot connect to host/port

解决：
http://yodi.polatic.me/solve-rabbitmq-error-epmd-error-for-host-ubuntu-address-cannot-connect-to-hostport/
判断hostname 与/host/hosts里面的ip和主机名一致

例如，ip为10.10.10.10

检查hostname:

$hostname
host_jihite

检查 /etc/hosts

10.10.10.10  host_jihite

12. RabbitMQ 集群与高可用配置

http://88250.b3log.org/rabbitmq-clustering-ha