[ Openstack ] Openstack-Mitaka 高可用之 Rabbitmq-server 集群部署

本文轉載自查看原文 2017-12-16 17:33 1549

環境介紹

openstack內部是遵循AMQP（高級消息隊列協議）的基礎上采用消息隊列進行通信。 nova對請求應答進行異步調用，當請求接收后立即出發一個回調。由於使用了異步通信，不會有用戶的動作被長置於等待狀態。異步使整個系統變得更加高效。

集群搭建

以下操作三個節點都需要執行：

安裝rabbitmq

# yum install rabbitmq-server  -y

配置監聽地址（每個controller節點都需要配置本地監聽地址）：

[root@controller1 ~]# vim /etc/rabbitmq/rabbitmq-env.conf        # 在RHEL7.2系統上默認是不存在該文件的
RABBITMQ_NODE_IP_ADDRESS=192.168.0.11
RABBITMQ_NODE_PORT=5672

只啟動第一個節點：

[root@controller1 ~]# systemctl start rabbitmq-server

拷貝.erlang.cookie文件到controller2 controller3，注意該文件的權限是400

[root@controller1 ~]# scp /var/lib/rabbitmq/.erlang.cookie controller2:/var/lib/rabbitmq/
.erlang.cookie                                                                                                                    100%   20     0.0KB/s   00:00    
[root@controller1 ~]# scp /var/lib/rabbitmq/.erlang.cookie controller3:/var/lib/rabbitmq/
.erlang.cookie                                                                                                                    100%   20     0.0KB/s   00:00

[root@controller1 ~]# ll /var/lib/rabbitmq/.erlang.cookie 
-r-------- 1 rabbitmq rabbitmq 20 Nov 30 00:00 /var/lib/rabbitmq/.erlang.cookie
[root@controller2 ~]# chown -R rabbitmq:rabbitmq /var/lib/rabbitmq/.erlang.cookie
[root@controller3 ~]# chown -R rabbitmq:rabbitmq /var/lib/rabbitmq/.erlang.cookie

啟動controller2、controller3 rabbitmq服務

# systemctl start rabbitmq-server

將controller2、controller3 與controller1組成集群

Controller2:

[root@controller2 ~]# rabbitmqctl stop_app
Stopping node rabbit@controller2 ...
[root@controller2 ~]# rabbitmqctl join_cluster rabbit@controller1
Clustering node rabbit@controller2 with rabbit@controller1 ...
[root@controller2 ~]# rabbitmqctl start_app
Starting node rabbit@controller2 ...

Controller3:

[root@controller3 ~]# rabbitmqctl stop_app
Stopping node rabbit@controller3 ...
[root@controller3 ~]# rabbitmqctl join_cluster rabbit@controller1
Clustering node rabbit@controller3 with rabbit@controller1 ...
[root@controller3 ~]# rabbitmqctl start_app
Starting node rabbit@controller3 …

在任意節點執行 rabbitmqctl cluster_status 查看集群

[root@controller1 ~]# rabbitmqctl cluster_status
Cluster status of node rabbit@controller1 ...
[{nodes,[{disc,[rabbit@controller1,rabbit@controller2,rabbit@controller3]}]},
 {running_nodes,[rabbit@controller3,rabbit@controller2,rabbit@controller1]},
 {cluster_name,<<"rabbit@controller1">>},
 {partitions,[]},
 {alarms,[{rabbit@controller3,[]},
          {rabbit@controller2,[]},
          {rabbit@controller1,[]}]}]

設置鏡像隊列
在任意一個節點上執行：

[root@controller1 rabbitmq]# rabbitmqctl set_policy ha-all '^(?!amq\.).*' '{"ha-mode": "all"}'
Setting policy "ha-all" for pattern "^(?!amq\\.).*" to "{\"ha-mode\": \"all\"}" with priority "0" ...
...done.

將所有隊列設置為鏡像隊列，即隊列會被復制到各個節點，各個節點狀態保持一致。

在rabbitmq中創建openstack用戶

[root@controller1 rabbitmq]# rabbitmqctl add_user openstack openstack
Creating user "openstack" ...
...done.
[root@controller1 rabbitmq]# rabbitmqctl set_permissions openstack ".*" ".*" ".*"
Setting permissions for user "openstack" in vhost "/" ...
...done.

到此，rabbitmq高可用搭建完畢。

在配置Mariadb-galera和rabbitmq監聽地址的時候，rabbitmq配置監聽地址尤其要注意，配置如下：

[root@controller1 ~]# chown rabbitmq:rabbitmq /etc/rabbitmq/rabbitmq-env.conf
[root@controller1 ~]# systemctl restart rabbitmq-server
[root@controller1 ~]# netstat -ntplu | egrep 5672
tcp        0      0 192.168.0.11:5672       0.0.0.0:*               LISTEN      29644/beam.smp      
tcp        0      0 0.0.0.0:25672           0.0.0.0:*               LISTEN      29644/beam.smp

rabbitmq-env.conf 說明：
RABBITMQ_NODE_IP_ADDRESS= //IP地址，空串bind所有地址，指定地址bind指定網絡接口
RABBITMQ_NODE_PORT=       //TCP端口號，默認是5672
RABBITMQ_NODENAME=        //節點名稱。默認是rabbit
RABBITMQ_CONFIG_FILE= //配置文件路徑，即rabbitmq.config文件路徑
RABBITMQ_MNESIA_BASE=     //mnesia所在路徑
RABBITMQ_LOG_BASE=        //日志所在路徑
RABBITMQ_PLUGINS_DIR=     //插件所在路徑

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