前期准备
第一步：下载
yum install ntp -y
所以机器做个时间同步
vim /etc/ntp.conf
都删除然后编辑
server 127.127.1.0
restrict 127.0.0.1 查看cat /etc/hosts
restrict 192.168.126.6 mask 255.255.255.0
第四步：重启
systemctl restart ntpd
共享端
第一步：下载
yum install ntpdate -y
第二步 ：同步时间
ntpdate 192.168.126.6
第三步：查看
date
编写计划任务
crontab -e
*/5 * * * * /usr/sbin/ntpdate 192.168.126.6
域名解析
? vim /etc/resolv.conf
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（3）node1：添加一个openstack的用户，并设密码为admin。并设置权限和成为管理员
node1：
rabbitmqctl add_user openstack admin
rabbitmqctl set_permissions openstack ".*" ".*" ".*"
rabbitmqctl set_user_tags openstack administrator
（1）条件:准备3台linux系统，确保配置好源，及epel源
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（2）三台机器能够静态解析彼此
cat /etc/hosts
192.168.126.6 zxw6
192.168.126.7 zxw7
192.168.126.8 zxw8
192.168.126.99 zxw99
（3）设置可以无密钥登陆到所有主机
ssh-keygen
ssh-copy-id 192.168.126.7
二、安装过程：
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第一步：所有主机下载rabbitmq 和erlang
yum install -y erlang rabbitmq-server.noarch
第二步：启动所以主机的rabbitmq
systemctl start rabbitmq-server.service
第三步：查看状态
systemctl status rabbitmq-server.service
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第四步：查看监听端口：
ss -tnl | grep 5672
LISTEN 0 128 *:25672 *:*
LISTEN 0 128 :::5672 :::*
netstat -lantp | grep 5672
tcp 0 0 0.0.0.0:25672 0.0.0.0:* LISTEN 3693/beam.smp
tcp6 0 0 :::5672 :::* LISTEN 3693/beam.smp
配置文件路径：/etc/rabbitmq/rabbitmq.config
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第五步：zxw6：修改guest密码为zxw6（默认用户为：guest 密码为：guest)
[[email?protected] ~]# rabbitmqctl change_password guest zxw6
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?第六步：zxw6：编辑rabbittmq变量文件
[[email?protected] ~]# vim /etc/rabbitmq/rabbitmq-env.conf
RABBITMQ_NODE_PORT=5672
ulimit -S -n 4096
RABBITMQ_SERVER_ERL_ARGS="+K true +A30 +P 1048576 -kernel inet_default_connect_options [{nodelay,true},{raw,6,18,<<5000:64/native>>}] -kernel inet_default_listen_options [{raw,<<5000:64/native>>}]"
RABBITMQ_NODE_IP_ADDRESS=192.168.126.6
第七步：zxw6：将rabbittmq变量文件拷贝到其他两节点，之后并修改相应节点的ip
[[email?protected] ~]# scp /etc/rabbitmq/rabbitmq-env.conf zxw7: /etc/rabbitmq/
修改ip为
[[email?protected] ~]# vim /etc/rabbitmq/rabbitmq-env.conf
RABBITMQ_NODE_IP_ADDRESS=192.168.126.7
[[email?protected] ~]# scp /etc/rabbitmq/rabbitmq-env.conf zxw8: /etc/rabbitmq/
修改IP为
[[email?protected] ~]# vim /etc/rabbitmq/rabbitmq-env.conf
RABBITMQ_NODE_IP_ADDRESS=192.168.126.8
第八步：查看rabbitmq插件
rabbitmq-plugins list /usr/lib/rabbitmq/bin/rabbitmq-plugins list
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第九步：所有主机 开启rabbitmq的web管理页面
/usr/lib/rabbitmq/bin/rabbitmq-plugins enable rabbitmq_management mochiweb webmachine rabbitmq_web_dispatch amqp_client rabbitmq_management_agent
或者：
rabbitmq-plugins enable rabbitmq_management
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第十步：重启rabbitmq并查看状态
systemctl restart rabbitmq-server.service
systemctl status rabbitmq-server.service
第十一步：进行访问
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第十二步：查看集群运行状态
rabbitmqctl cluster_status
[{nodes,[{disc,[[email?protected]]}]},节点
{running_nodes,[[email?protected]]},运行节点
{cluster_name,<<"[email?protected]">>},集群名字
{partitions,[]},
{alarms,[{[email?protected],[]}]}]
第十三步：zxw6发送erlang.cookie（认证）到其他节点配置集群
[[email?protected] ~]# cat /var/lib/rabbitmq/.erlang.cookie
CYCRJBVYHICBYKXJINJL
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[[email?protected] ~]# scp /var/lib/rabbitmq/.erlang.cookie zxw7:/var/lib/rabbitmq/
[email?protected]‘s password:
.erlang.cookie 100% 20 0.0KB/s 00:00
[[email?protected] ~]# scp /var/lib/rabbitmq/.erlang.cookie zxw8:/var/lib/rabbitmq/
[email?protected]‘s password:
.erlang.cookie 100% 20 0.0KB/s 00:00
第十四步：重启zxw7和zxw8主机，
[[email?protected] ~]# systemctl restart rabbitmq-server.service
[[email?protected] ~]# systemctl restart rabbitmq-server.service
第十五步：zxw7和zxw8以ram的方式加入zxw6节点，之后重启应用
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[[email?protected] ~]# rabbitmqctl stop_app 停止节点
Stopping node [email?protected] ...
[[email?protected] ~]# rabbitmqctl cluster_statu 查看节点状态
Cluster status of node [email?protected] ...
[{nodes,[[email?protected]]}]},{alarms,[]}]
[[email?protected] ~]# rabbitmqctl join_cluster --ram [email?protected]
添加zxw7到zxw6节点集群
Clustering node [email?protected] with [email?protected] ...
[[email?protected] ~]# rabbitmqctl start_app 开启节点
Starting node [email?protected] ...
[[email?protected] ~]# rabbitmqctl cluster_status 再次查看状态
Cluster status of node [email?protected] ...
[{nodes,[[email?protected]]},{ram,[[email?protected]]}]},
{running_nodes,[[email?protected],[email?protected]]},
{cluster_name,<<"[email?protected]">>},
{partitions,[{[email?protected],{[email?protected],[]}]}]
[[email?protected] ~]# rabbitmqctl stop_app
Stopping node [email?protected] ...
您在 /var/spool/mail/root 中有新邮件
[[email?protected] ~]# rabbitmqctl cluster_status
Cluster status of node [email?protected] ...
[{nodes,[[email?protected]]}]},[]}]
[[email?protected] ~]# rabbitmqctl join_cluster --ram [email?protected]
Clustering node [email?protected] with [email?protected] ...
[[email?protected] ~]# rabbitmqctl start_app
Starting node [email?protected] ...
[[email?protected] ~]# rabbitmqctl cluster_status
Cluster status of node [email?protected] ...
[{nodes,[[email?protected]]},[[email?protected],[email?protected]]}]},[[email?protected],[email?protected],[email?protected]]},<<"[email?protected]">>},
第十六步：zxw6检查集群状态
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[[email?protected] ~]# rabbitmqctl cluster_status
Cluster status of node [email?protected] ...
[{nodes,[[email?protected]]},[[email?protected],[email?protected]]}]},[[email?protected],[email?protected],[email?protected]]},<<"[email?protected]">>},[{[email?protected],{[email?protected],{[email?protected],[]}]}]
第十七步：
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其他命令：
（1）添加管理员：
rabbitmqctl add_user mqadmin mqadmin
添加用户
rabbitmqctl set_user_tags mqadmin administrator
设置类型
rabbitmqctl set_permissions -p / mqadmin ".*" ".*" ".*"
给予权限
rabbitmqctl list_users
查看用户详细信息
rabbitmqctl change_password guest zxw6
修个密码
（2）更改节点类型（内存型或磁盘型）
rabbitmqctl stop_app
rabbitmqctl change_cluster_node_type disc 或
rabbitmqctl change_cluster_node_type ram
rabbitmqctl start_app
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（3）从集群移除节点（或者重置节点）
rabbitmqctl stop_app
rabbitmqctl reset
rabbitmqctl start_app
rabbitmqctl cluster_status
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（4）从某个节点移除集群中其他节点
rabbitmqctl stop_app
rabbitmqctl forget_cluster_node [email?protected]
rabbitmqctl reset
rabbitmqctl start_app
rabbitmqctl cluster_status
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1. 保证集群中至少有一个磁盘类型的节点以防数据丢失，在更改节点类型时尤其要注意。
2. 若整个集群被停掉了，应保证最后一个 down 掉的节点被最先启动，若不能则要使用 forget_cluster_node 命令将其移出集群
3. 若集群中节点几乎同时以不可控的方式 down 了此时在其中一个节点使用 force_boot 命令重启节点
