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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