build environment

host	IP	CPU name
MQ01	192.168.0.107	rabbitmq01
MQ02	192.168.0.86	rabbitmq02

Install MQ

Download MQ

wget wget https://packagecloud.io/rabbitmq/rabbitmq-server/packages/el/7/rabbitmq-server-3.8.16-1.el7.noarch.rpm
wget https://packagecloud.io/rabbitmq/erlang/packages/el/7/erlang-23.2.7-1.el7.x86_64.rpm

Install MQ

yum localinstall -y erlang-23.2.7-1.el7.x86_64.rpm
yum localinstall -y rabbitmq-server-3.8.16-1.el7.noarch.rpm

Write master file

touch /etc/rabbitmq/rabbitmq.conf
chow .rabbitmq /etc/rabbitmq/ -R
Vim /etc/rabbitmq/rabbitmq.conf
#禁止来宾访问
loopback_users.guest = false
#监听端口
listeners.tcp.default = 5672
#默认用户名和密码
default_pass = admin
default_user = admin
#WEB管理端端口
management.tcp.port = 15672
management.tcp.ip = 0.0.0.0
#WEB默认访问路径（建议不配置）
management.path_prefix=mq

Modify data, log storage location

mkdir /data/rabbitmq/{
    
    logs/data}
chown rabitmq:rabbitmq /data/rabbitmq -R
vim /etc/rabbitmq/rabbitmq-env.conf
#添加如下两行内容
RABBITMQ_MNESIA_BASE=/data/rabbitmq/data
RABBITMQ_LOG_BASE=/data/rabbitmq/logs

Start MQ

systemctl stop firewalld
systemctl start rabbitmq-server

Set hostname connection

MQ01：

hostnamectl set-hostname rabbitmq01
bash
echo "192.168.0.86    rabbitmq02" >>/etc/hosts
echo "192.168.0.107   rabbitmq01" >>/etc/hosts
ping rabbitmq02

MQ02:

hostnamectl set-hostname rabbitmq02
bash
echo "192.168.0.86    rabbitmq02" >>/etc/hosts
echo "192.168.0.107   rabbitmq01" >>/etc/hosts
ping rabbitmq01

set.erlang.cookie

MQ01:

echo "Weihu2023@" >/var/lib/rabbitmq/.erlang.cookie
systemctl restart rabbitmq-server

MQ02:

echo "Weihu2023@" >/var/lib/rabbitmq/.erlang.cookie
systemctl restart rabbitmq-server

Build a cluster

Node joins the cluster

MQ02：

rabbitmqctl stop_app
rabbitmqctl reset
rabbitmqctl join_cluster rabbit@rabbitmq01
rabbitmqctl start_app

By default, RabbitMQ starts as a disk node. If you want to join as a memory node, you can add the --ram parameter.
If you want to modify the node type, you can use the command:

rabbitmqctl change_cluster_node_type disc(ram)

Note that since RAM nodes only store internal database tables in memory, these data must be synchronized from other nodes when the RAM node starts, so a cluster must contain at least one disk node.

set cluster name

rabbitmqctl set_cluster_name rabbitmq_test_cluster

At this point, the ordinary cluster has been built. If you need to set up a mirrored cluster, you need to continue to perform the following operations

Set up a mirrored cluster

command line settings

rabbitmqctl set_policy "queue_policy_test" "^" '{"ha-mode":"all","ha-sync-mode":"automatic"}'

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view rules

 rabbitmqctl list_policies

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Management interface settings
1. Create rules

各参数含义如下：
Name:                policy 的名称。
Pattern:             queue 的匹配模式(正则表达式)。
Definition：         镜像定义，主要有三个参数：ha-mode, ha-params, ha-sync-mode。
ha-mode：            指明镜像队列的模式，有效值为 all、exactly、nodes。其中 all 表示在集群中所有的节点上进行镜像（默认即此）；exactly 表示在指定个数的节点上进行镜像，节点的个数由 ha-params 指定；nodes 表示在指定的节点上进行镜像，节点名称通过 ha-params 指定。
ha-params：          exactly 模式需要用到的参数,
ha-sync-mode：       进行队列中消息的同步方式，有效值为 automatic 和 manual。
priority 为可选参数，表示 policy 的优先级。

2. Check the rules
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3. Verify the rules (create a queue on a random node and check whether it is synchronized to two nodes)