Mysql双主配置及安装部署
Mysql双主配置及安装部署 来源: https://www.ucloud.cn/yun/129271.html 作者: IT那活儿 发布日期: 发布于2023 01 11 13:19 Mysql双主配置及安装部署 点击上方“IT那活儿 ”公众号,关注后了解更多内容,不管IT什么活儿,干就完了!!! https:/
来源: https://www.ucloud.cn/yun/129271.html 作者: IT那活儿 发布日期: 发布于2023-01-11 13:19
Mysql双主配置及安装部署
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由于在工作中客户要求安装Mysql并进行双主配置,Mysql的双主配置在生产环境中也是常用到的,下面我来介绍一下Mysql的安装与双主的配置,有不对的地方,欢迎大家指出!!
一
部署安装
1.1 获取安装介质
https://cdn.mysql.com//Downloads/MySQL-8.0/mysql-8.0.23-linux-glibc2.12-x86\_64.tar.xz
1.2 创建用户
groupaddmysqluseradd-r -g mysql -s /bin/false mysql
1.3 解压安装包
cd/usr/localchown-R mysql:mysql mysql-8.0.23-linux-glibc2.12-x86_64.tar.xztar-xvf mysql-8.0.23-linux-glibc2.12-x86_64.tar.xzchown-R mysql:mysql mysql-8.0.23-linux-glibc2.12-x86_64ln-s mysql-8.0.23-linux-glibc2.12-x86_64 mysqlchown-R mysql:mysql mysql
1.4 创建数据文件目录
mkdir-p /mysqldata/datamkdir-p /mysqldata/logmkdir-p /mysqldata/syschown-R mysql:mysql /mysqldata/chmod-R 750 /mysqldata/
1.5 配置环境变量(写到/etc/profile)
exportPATH=/usr/local/mysql/bin:$PATHsource/etc/profile
1.6 编辑参数文件
- 主库
vi/etc/my.cnf[mysql]prompt=[u@h][d]>\_socket=/mysqldata/sys/mysql.sock[mysqld]user=mysqldatadir=/mysqldata/data/socket=/mysqldata/sys/mysql.sockcharacter_set_server=utf8mb4transaction_isolation=read-committedexplicit_defaults_for_timestamp=1max_allowed_packet=16777216event_scheduler=1server_id=212211lower_case_table_names=1interactive_timeout=1800wait_timeout=1800skip_name_resolve=1max_connections=2000max_connect_errors=100000table_open_cache=4096table_definition_cache=4096table_open_cache_instances=64read_buffer_size=6Mread_rnd_buffer_size=16Msort_buffer_size=16Mtmp_table_size=64Mjoin_buffer_size=64Mthread_cache_size=64log_error=/mysqldata/log/alert.loglog_bin=/mysqldata/log/binlogmaster_info_repository=tablerelay_log_info_repository=tablesync_binlog=1gtid_mode=onenforce_gtid_consistency=1log_slave_updates=1binlog_format=rowbinlog_rows_query_log_events=1relay_log=/mysqldata/log/relay.logrelay_log_recovery=1#slave_rows_search_algorithms=index_scan,hash_scaninnodb_buffer_pool_size=16Ginnodb_buffer_pool_instances=4innodb_buffer_pool_load_at_startup=1innodb_buffer_pool_dump_at_shutdown=1innodb_lru_scan_depth=2048innodb_flush_method=o_directinnodb_open_files=4096innodb_log_file_size=1024000000
-
从库
从库的参数基本上跟主库的参数一致,只需要改变一个server_id,这个配置双主的时候不能一样。
1.7 初始化数据库
cd/usr/local/mysqlbin/mysqld--initialize --lower-case-table-names=1 -user=mysql
1.8 启动数据库
cd/usr/local/mysqlbin/mysqld_safe--user=mysql &
1.9 进入mysql修改密码
mysql-uroot -p(初始密码在error.log里)VKgfkfqUA0,7alteruser root@localhost identified by My1qaz@WSX;flushprivileges;
1.10 添加服务到系统
cd/usr/local/mysqlcpsupport-files/mysql.server /etc/init.d/mysqlchmod+x /etc/init.d/mysqlchkconfig--add mysqlchkconfig--list mysql
1.11 测试
servicemysql start
二
双主配置
2.1 192.168.245.138->192.168.245.139方向
1)创建复制用户(主库:192.168.245.138)
createuser repl@% identified with mysql_native_password by "2w3e@W#E";grantfile on *.* to repl@%;grantreplication slave on *.* to repl@%;flushprivileges;
2)开启复制进程(从库:192.168.245.139)
changemaster tomaster_host=192.168.245.138,master_port=3306,master_user=repl,master_password=2w3e@W#E,master_auto_position=1;startslave;
3)检查slave状态
showslave statusG
2.2 192.168.245.139->192.168.245.138方向
1)创建复制用户(主库:192.168.245.139)
createuser sysadmin@% identified with mysql_native_password by"1q2w!Q@W";grantall on *.* to sysadmin@%;flushprivileges;
2)开启复制进程(从库:192.168.245.138)
changemaster tomaster_host=192.168.245.139,master_port=3306,master_user=repl,master_password=2w3e@W#E,master_auto_position=1;startslave;
3)检查slave状态
showslave statusG
三
测试
3.1 192.168.245.138->192.168.245.139方向
192.168.245.138:CREATEDATABASE `gohealth-plat` CHARACTER SET utf8mb4 COLLATEutf8mb4_general_ci;usegohealth-plat;createtable product(product_idint(10) not NULL,product_namevarchar(100) not NULL,product_tyepvarchar(32) not NULL,sale_priceint(10) default 0,input_priceint(10) default 0,regist_timedate,primarykey (product_id));192.168.245.139:showdatabases;usegohealth-plat;showtables;
3.2 192.168.245.139->192.168.245.138方向
192.168.245.139:usegohealth-plat;insertinto product values(555,sdfsd,sdfd,54,215,null);select* from product;192.168.245.138:select* from product;
MySQL软件安装以及双主配置还是非常简单的,如果在启动复制过程中报错,可以使用showslave status进行查看是什么原因导致的,好了,今天的分享就到此结束了!!

本文作者:关 莹(上海新炬王翦团队)
本文来源:“IT那活儿”公众号
