MySQL8.0 MIC高可用集群的搭建进程
发布时间:2022-01-16 15:19:09 所属栏目:MySql教程 来源:互联网
导读:本篇内容主要讲解MySQL8.0 MIC高可用集群的搭建过程,感兴趣的朋友不妨来看看。本文介绍的方法操作简单快捷,实用性强。下面就让小编来带大家学习MySQL8.0 MIC高可用集群的搭建过程吧! 一,集群部署 1.1 安装环境; 操作系统:Linux,版本:CentOS-7-x86 介
本篇内容主要讲解“MySQL8.0 MIC高可用集群的搭建过程”,感兴趣的朋友不妨来看看。本文介绍的方法操作简单快捷,实用性强。下面就让小编来带大家学习“MySQL8.0 MIC高可用集群的搭建过程”吧! 一,集群部署 1.1 安装环境; 操作系统:Linux,版本:CentOS-7-x86 介质准备:无 环境清理 释放yum进程 [root@bug ~]# ps -ef|grep yum root 22481 1694 5 17:23 ? 00:00:03 /usr/bin/python /usr/share/PackageKit/helpers/yum/yumBackend.py get-updates none root 22591 22507 1 17:24 pts/ 00:00:00 grep --color=auto yum [root@bug ~]# kill -9 22481 查看是否有多余系统,有则卸载 [root@bug ~]# rpm -qa|grep mairadb [root@bug ~]# rpm -qa|grep mysql 关闭防火墙 [root@bug ~]# systemctl status firewalld.service ● firewalld.service - firewalld - dynamic firewall daemon Loaded: loaded (/usr/lib/systemd/system/firewalld.service; enabled; vendor preset: enabled) Active: inactive (dead) 关闭selinux,重启系统后生效 [root@bug selinux]# vi /etc/selinux/config SELINUX=disabled [root@bug selinux]# reboot 1.2 安装MySQL8.0 [root@bug ~]# yum install -y wget https://repo.mysql.com//mysql80-community-release-el7-1.noarch.rpm [root@bug ~]# yum list|grep mysql [root@bug ~]# yum install -y mysql-community-client.x86_64 mysql-router.x86_64 mysql-shell.x86_64 采用YUM源安装方式,总下载量约400M, 1.3自动集群部署 部署节点1 [root@bug ~]# mysqlsh MySQL JS > dba.deploySandboxInstance(3310); A new MySQL sandbox instance will be created on this host in /root/mysql-sandboxes/3310 Warning: Sandbox instances are only suitable for deploying and running on your local machine for testing purposes and are not accessible from external networks. Please enter a MySQL root password for the new instance: ****** Deploying new MySQL instance... Instance localhost:3310 successfully deployed and started. Use shell.connect('root@localhost:3310'); to connect to the instance. 第一个节点部署完毕,端口设置为3310,登陆账号为root@localhost,密码 ****** 使用本地认证的方式, 登陆数据库实例,进行验证。 [root@bug ~]# mysql -uroot -porange -S /root/mysql-sandboxes/3310/sandboxdata/mysqld.sock mysql: [Warning] Using a password on the command line interface can be insecure. Welcome to the MySQL monitor. Commands end with ; or g. 同样的方法,部署节点2,节点3。 MySQL localhost:3310 ssl JS > dba.getCluster().status() { "clusterName": "test", "defaultReplicaSet": { "name": "default", "primary": "localhost:3310", "ssl": "REQUIRED", "status": "OK", "statusText": "Cluster is ONLINE and can tolerate up to ONE failure.", "topology": { "localhost:3310": { "address": "localhost:3310", "mode": "R/W", "readReplicas": {}, "role": "HA", "status": "ONLINE" }, "localhost:3320": { "address": "localhost:3320", "mode": "R/O", "readReplicas": {}, "role": "HA", "status": "ONLINE" }, "localhost:3330": { "address": "localhost:3330", "mode": "R/O", "readReplicas": {}, "role": "HA", "status": "ONLINE" } } }, "groupInformationSourceMember": "mysql://root@localhost:3310" } 一个简单的包含三个节点的集群已经创建完成。可以完成数据同步,读写分离等功能,比如此刻3310端口的状态是"R/W",同时read与write,3320与3330的状态是"R/O",只读模式。 1.5配置中间件 此时的集群的高可用性还不完整,需要MySQL-router来完成集群与外部的对接,实现自动切换,故障转移等功能。 MySQL-router的作用类似keepalived 类的中间件。当主机发生故障后,自动将应用切换到其他实例。 mysql> 证明MySQL-router配置完成可用。 1.6验证集群效果 1,通过router同时登陆三个节点,查看端口号。 2,在节点1构造数据,在节点2,3差看状态,验证数据同步性。 3,节点1(主机)离线,查看集群状态与节点2,节点3状态,验证灾备能力。 到此,相信大家对“MySQL8.0 MIC高可用集群的搭建过程”有了更深的了解,不妨来实际操作一番吧! (编辑:晋中站长网) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |