rabbitmq-cluster
阿新 • • 發佈:2018-12-12
一、前期準備
(1)條件:準備3臺linux系統,確保能連到
download.yunwei.edu
(2)編寫yum源下載指令碼:
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)將系統自帶網路源移走,執行yum-repo.sh
sh yum-repo.sh
(4)DNS能夠解析此三臺主機
二、安裝過程:
(1)所有node安裝rabbtimq和erlang軟體包:
yum install -y erlang rabbitmq-server.noarch
systemctl enable rabbitmq-server.service
systemctl start rabbitmq-server.service
systemctl status rabbitmq-server.service
檢視監聽埠:
netstat -lantp | grep 5672
配置檔案:
vim /etc/rabbitmq/rabbitmq.config
(2)node1:修改guest密碼為admin(預設使用者為:guest 密碼為:guest)
rabbitmqctl change_password guest admin
(3)node1:新增一個openstack的使用者,並設密碼為admin。並設定許可權和成為管理員
node1:
rabbitmqctl add_user openstack admin
rabbitmqctl set_permissions openstack ".*" ".*" ".*"
rabbitmqctl set_user_tags openstack administrator
(4)node1:編輯rabbittmq變數檔案
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:將rabbittmq變數檔案拷貝到其他兩節點,之後並修改相應節點的ip
scp /etc/rabbitmq/rabbitmq-env.conf con2:/etc/rabbitmq/
scp /etc/rabbitmq/rabbitmq-env.conf con3:/etc/rabbitmq/
檢視rabbitmq外掛
/usr/lib/rabbitmq/bin/rabbitmq-plugins list
(6)所有node 開啟rabbitmq的web管理頁面
/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傳送erlang.cookie到其他節點配置叢集
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停止應用,並以ram的方式加入node1節點,之後重啟應用
systemctl restart rabbitmq-server.service
rabbitmqctl stop_app
rabbitmqctl join_cluster --ram [email protected]
rabbitmqctl start_app
(9)node1檢查叢集狀態
[[email protected] conf]# rabbitmqctl cluster_status
Cluster status of node [email protected] ...
[{nodes,[{disc,[[email protected]]},{ram,[[email protected],[email protected]]}]},
{running_nodes,[[email protected],[email protected],[email protected]]},
{cluster_name,<<"[email protected]">>},
{partitions,[]},
{alarms,[{[email protected],[]},{[email protected],[]},{[email protected],[]}]}]
(10)登陸驗證:
http://172.16.254.60:15672/#/ guest/admin
其他命令:
(1)新增管理員:
rabbitmqctl add_user mqadmin mqadmin
rabbitmqctl set_user_tags mqadmin administrator
rabbitmqctl set_permissions -p / mqadmin ".*" ".*" ".*"
(2)更改節點型別(記憶體型或磁碟型)
rabbitmqctl stop_app
rabbitmqctl change_cluster_node_type disc 或 rabbitmqctl change_cluster_node_type ram
rabbitmqctl start_app
(3)從叢集移除節點(或者重置節點)
rabbitmqctl stop_app
rabbitmqctl reset
rabbitmqctl start_app
rabbitmqctl cluster_status
(4)從某個節點移除叢集中其他節點
rabbitmqctl forget_cluster_node [email protected]
rabbitmqctl reset
rabbitmqctl start_app
rabbitmqctl cluster_status
1. 保證叢集中至少有一個磁碟型別的節點以防資料丟失,在更改節點型別時尤其要注意。
2. 若整個叢集被停掉了,應保證最後一個 down 掉的節點被最先啟動,若不能則要使用 forget_cluster_node 命令將其移出叢集
3. 若叢集中節點幾乎同時以不可控的方式 down 了此時在其中一個節點使用 force_boot 命令重啟節點