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  • open stack--rabbitmq cluster

    一、前期准备
     
    (1)条件:准备3台linux系统,确保能连到download.yunwei.edu
     
    (2)编写yum源下载脚本:
    vim yum-repo.sh
    wget -O /etc/yum.repos.d/Centos7-Base-yunwei.repo    download.yunwei.edu/shell/Centos7-Base-yunwei.repo
    wget -O /etc/yum.repos.d/epel-yunwei.repo   download.yunwei.edu/shell/epel-yunwei.repo
    wget -O /etc/yum.repos.d/rdo-release-yunwei.repo  download.yunwei.edu/shell/rdo-release-yunwei.repo
    wget -O /etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-SIG-Cloud  download.yunwei.edu/shell/RPM-GPG-KEY-CentOS-SIG-Cloud
    wget -O /etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7  download.yunwei.edu/shell/RPM-GPG-KEY-EPEL-7
     
    (3)将系统自带网络源移走,执行yum-repo.sh
    sh yum-repo.sh
     
    (4)DNS能够解析此三台主机
     
    二、安装过程:
     
    (1)所有node安装rabbtimq和erlang软件包:
    yum install -y erlang rabbitmq-server.noarch
    systemctl enable rabbitmq-server.service
    systemctl start rabbitmq-server.service
    systemctl status rabbitmq-server.service
     
    查看监听端口:
    netstat -lantp | grep 5672
    配置文件:
    vim /etc/rabbitmq/rabbitmq.config
     
    (2)node1:修改guest密码为admin(默认用户为:guest 密码为:guest)
    rabbitmqctl change_password guest admin
     
    (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
     
    (4)node1:编辑rabbittmq变量文件
    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,6,18,<<5000:64/native>>}]"
    RABBITMQ_NODE_IP_ADDRESS=172.16.254.60
     
    (5)node1: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
    scp /etc/rabbitmq/rabbitmq-env.conf con2:/etc/rabbitmq/
    scp /etc/rabbitmq/rabbitmq-env.conf con3:/etc/rabbitmq/
     
    查看rabbitmq插件
    /usr/lib/rabbitmq/bin/rabbitmq-plugins list
     
    (6)所有node 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
     
    systemctl restart rabbitmq-server.service
    systemctl status rabbitmq-server.service
     
    (7)node1发送erlang.cookie到其他节点配置集群
    rabbitmqctl status
    scp /var/lib/rabbitmq/.erlang.cookie con2:/var/lib/rabbitmq/.erlang.cookie
    scp /var/lib/rabbitmq/.erlang.cookie con3:/var/lib/rabbitmq/.erlang.cookie
     
    (8)node2和node3停止应用,并以ram的方式加入node1节点,之后重启应用
    systemctl restart rabbitmq-server.service
    rabbitmqctl stop_app
    rabbitmqctl join_cluster --ram rabbit@con1
    rabbitmqctl start_app
     
    (9)node1检查集群状态
    [root@con1 conf]# rabbitmqctl cluster_status
    Cluster status of node rabbit@con1 ...
    [{nodes,[{disc,[rabbit@con1]},{ram,[rabbit@con3,rabbit@con2]}]},
    {running_nodes,[rabbit@con3,rabbit@con2,rabbit@con1]},
    {cluster_name,<<"rabbit@con1">>},
    {partitions,[]},
    {alarms,[{rabbit@con3,[]},{rabbit@con2,[]},{rabbit@con1,[]}]}]
     
    (10)登陆验证:http://172.16.254.60:15672/#/             guest/admin
     
     
     
     
    其他命令:
    (1)添加管理员:
    rabbitmqctl add_user mqadmin mqadmin
    rabbitmqctl set_user_tags mqadmin administrator
    rabbitmqctl set_permissions -p / mqadmin ".*" ".*" ".*"
     
    (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
     
    (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
     
    (4)从某个节点移除集群中其他节点
    rabbitmqctl forget_cluster_node rabbit@node3
    rabbitmqctl reset
    rabbitmqctl start_app
    rabbitmqctl cluster_status
     
    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
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  • 原文地址:https://www.cnblogs.com/heijuzi-11/p/10908095.html
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