B03-openstack高可用-rabbitmq集群+memcache集群

RabbitMQ集群

1：下载rabbitmq的相关软件包(所有节点)

[root@controller01 ~]# yum install erlang rabbitmq-server -y

[root@controller01 ~]# systemctl enable rabbitmq-server.service

2：任选1个控制节点首先启动rabbitmq服务，这里选择controller01节点

[root@controller01 ~]# systemctl start rabbitmq-server.service

[root@controller01 ~]# rabbitmqctl cluster_status
Cluster status of node rabbit@controller01
[{nodes,[{disc,[rabbit@controller01]}]},
 {running_nodes,[rabbit@controller01]},
 {cluster_name,<<"rabbit@controller01">>},
 {partitions,[]},
 {alarms,[{rabbit@controller01,[]}]}]

3：分发.erlang.cookie

[root@controller01 ~]# scp /var/lib/rabbitmq/.erlang.cookie root@10.100.214.203:/var/lib/rabbitmq/
[root@controller01 ~]# scp /var/lib/rabbitmq/.erlang.cookie root@10.100.214.202:/var/lib/rabbitmq/

4：修改controller02/03节点.erlang.cookie文件的用户/组，以controller02节点为例

[root@controller03 ~]# chown rabbitmq:rabbitmq /var/lib/rabbitmq/.erlang.cookie

[root@controller02 ~]# chown rabbitmq:rabbitmq /var/lib/rabbitmq/.erlang.cookie

# 注意修改全部控制节点.erlang.cookie文件的权限，默认即400权限，可不修改
[root@controller02 ~]# ll /var/lib/rabbitmq/.erlang.cookie

5：启动controller02/03节点的rabbitmq服务

[root@controller02 ~]# systemctl start rabbitmq-server
[root@controller03 ~]# systemctl start rabbitmq-server

6：构建集群，controller02/03节点以ram节点的形式加入集群

[root@controller02 ~]# rabbitmqctl stop_app
Stopping rabbit application on node rabbit@controller02

[root@controller02 ~]# rabbitmqctl join_cluster --ram rabbit@controller01
Clustering node rabbit@controller02 with rabbit@controller01

[root@controller02 ~]# rabbitmqctl start_app
Starting node rabbit@controller02

[root@controller03 ~]#  rabbitmqctl stop_app
Stopping rabbit application on node rabbit@controller03

[root@controller03 ~]#  rabbitmqctl join_cluster --ram rabbit@controller01
Clustering node rabbit@controller03 with rabbit@controller01

[root@controller03 ~]#  rabbitmqctl start_app
Starting node rabbit@controller03

7：任意节点可验证集群状态

[root@controller01 ~]#  rabbitmqctl cluster_status
Cluster status of node rabbit@controller01
[{nodes,[{disc,[rabbit@controller01]},
         {ram,[rabbit@controller03,rabbit@controller02]}]},
 {running_nodes,[rabbit@controller03,rabbit@controller02,rabbit@controller01]},
 {cluster_name,<<"rabbit@controller01">>},
 {partitions,[]},
 {alarms,[{rabbit@controller03,[]},
          {rabbit@controller02,[]},
          {rabbit@controller01,[]}]}]

8：创建rabbitmq账号

[root@controller01 ~]# rabbitmqctl add_user openstack huayun
Creating user "openstack"

9：设置新建账号的状态

[root@controller01 ~]# rabbitmqctl set_user_tags openstack administrator
Setting tags for user "openstack" to [administrator]

10：设置新建账号的权限

[root@controller01 ~]# rabbitmqctl set_permissions -p "/" openstack ".*" ".*" ".*"
Setting permissions for user "openstack" in vhost "/"
11：查看账号

[root@controller01 ~]# rabbitmqctl list_users
Listing users
openstack    [administrator]
guest    [administrator]

12：设置镜像队列ha

[root@controller01 ~]# rabbitmqctl set_policy ha-all "^" '{"ha-mode":"all"}'
Setting policy "ha-all" for pattern "^" to "{"ha-mode":"all"}" with priority "0"

13：查看镜像队列策略

[root@controller01 ~]# rabbitmqctl list_policies
Listing policies
/    ha-all    all    ^    {"ha-mode":"all"}    0

14：安装web管理插件

# 在全部控制节点安装web管理插件，以controller01节点为例

[root@controller01 ~]#  rabbitmq-plugins enable rabbitmq_management
The following plugins have been enabled:
  amqp_client
  cowlib
  cowboy
  rabbitmq_web_dispatch
  rabbitmq_management_agent
  rabbitmq_management

Applying plugin configuration to rabbit@controller01... started 6 plugins.

 访问任意节点，如：http://10.100.214.201:15672/

memcache集群：

Memcached是无状态的，各控制节点独立部署，openstack各服务模块统一调用多个控制节点的memcached服务即可。

1：安装memcache的软件包（三个节点安装）

[root@controller01 ~]# yum install memcached python-memcached -y

2： 设置memcached

[root@controller01 ~]#  sed -i 's|127.0.0.1,::1|0.0.0.0|g' /etc/sysconfig/memcached
[root@controller01 ~]# cat /etc/sysconfig/memcached
PORT="11211"
USER="memcached"
MAXCONN="1024"
CACHESIZE="64"
OPTIONS="-l 0.0.0.0"

3：开机启动

[root@controller01 ~]# systemctl start memcached
[root@controller01 ~]# systemctl enable memcached