mysql主从
时间:2021-10-11
本文章向大家介绍mysql主从，主要包括mysql主从使用实例、应用技巧、基本知识点总结和需要注意事项，具有一定的参考价值，需要的朋友可以参考一下。
mysql主从
主从安装mariadb
[root@master ~]# yum -y install mariadb*
[root@slave ~]# yum -y install mariadb*
zabbix服务启动
[root@zabbix ~]# zabbix_server
[root@zabbix ~]# zabbix_agentd
[root@zabbix ~]# ss -antl
State Recv-Q Send-Q Local Address:Port Peer Address:Port
LISTEN 0 32 192.168.122.1:53 0.0.0.0:*
LISTEN 0 128 0.0.0.0:22 0.0.0.0:*
LISTEN 0 5 127.0.0.1:631 0.0.0.0:*
LISTEN 0 128 0.0.0.0:10050 0.0.0.0:*
LISTEN 0 128 0.0.0.0:10051 0.0.0.0:*
LISTEN 0 128 127.0.0.1:9000 0.0.0.0:*
LISTEN 0 128 0.0.0.0:111 0.0.0.0:*
LISTEN 0 128 [::]:22 [::]:*
LISTEN 0 5 [::1]:631 [::]:*
LISTEN 0 80 *:3306 *:*
LISTEN 0 128 [::]:111 [::]:*
LISTEN 0 128 *:80 *:*
主从开启mysql
[root@master ~]# systemctl start mariadb
[root@slave ~]# systemctl start mariadb
主从关闭防火墙
[root@master ~]# systemctl disable --now firewalld.service
Removed /etc/systemd/system/multi-user.target.wants/firewalld.service.
Removed /etc/systemd/system/dbus-org.fedoraproject.FirewallD1.service.
[root@master ~]# setenforce 0
//从服务器已经关闭过
主服务器操作
主创建权限账户
[root@master ~]# mysql
Welcome to the MariaDB monitor. Commands end with ; or \g.
Your MariaDB connection id is 9
Server version: 10.3.11-MariaDB MariaDB Server
Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
MariaDB [(none)]> grant replication slave on *.* to 'repl'@'192.168.145.171' identified by 'repl123!';
Query OK, 0 rows affected (0.000 sec)
MariaDB [(none)]> flush privileges;
Query OK, 0 rows affected (0.000 sec)
MariaDB [(none)]> quit
Bye
进入此目录找到mysqld添加后两行
[root@master ~]# vim /etc/my.cnf.d/mariadb-server.cnf
[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
log-error=/var/log/mariadb/mariadb.log
pid-file=/run/mariadb/mariadb.pid
server-id = 10
log-bin = mysql_bin
进入/var/lib/mysql/下查看是否添加mysql_bin 如果没有重启
[root@master ~]# ll /var/lib/mysql/
总用量 122936
-rw-rw----. 1 mysql mysql 16384 10月 11 02:45 aria_log.00000001
-rw-rw----. 1 mysql mysql 52 10月 11 02:45 aria_log_control
-rw-rw----. 1 mysql mysql 972 10月 11 02:45 ib_buffer_pool
-rw-rw----. 1 mysql mysql 12582912 10月 11 02:45 ibdata1
-rw-rw----. 1 mysql mysql 50331648 10月 11 02:45 ib_logfile0
-rw-rw----. 1 mysql mysql 50331648 10月 11 02:45 ib_logfile1
-rw-rw----. 1 mysql mysql 12582912 10月 11 02:45 ibtmp1
-rw-rw----. 1 mysql mysql 0 10月 11 02:45 multi-master.info
drwx------. 2 mysql mysql 4096 10月 11 02:45 mysql
srwxrwxrwx. 1 mysql mysql 0 10月 11 02:45 mysql.sock
-rw-rw----. 1 mysql mysql 16 10月 11 02:45 mysql_upgrade_info
drwx------. 2 mysql mysql 20 10月 11 02:45 performance_schema
-rw-rw----. 1 mysql mysql 24576 10月 11 02:45 tc.log
[root@master ~]# systemctl restart mariadb
[root@master ~]# ll /var/lib/mysql/
总用量 122920
-rw-rw----. 1 mysql mysql 16384 10月 11 02:55 aria_log.00000001
-rw-rw----. 1 mysql mysql 52 10月 11 02:55 aria_log_control
-rw-rw----. 1 mysql mysql 976 10月 11 02:55 ib_buffer_pool
-rw-rw----. 1 mysql mysql 12582912 10月 11 02:55 ibdata1
-rw-rw----. 1 mysql mysql 50331648 10月 11 02:55 ib_logfile0
-rw-rw----. 1 mysql mysql 50331648 10月 11 02:45 ib_logfile1
-rw-rw----. 1 mysql mysql 12582912 10月 11 02:55 ibtmp1
-rw-rw----. 1 mysql mysql 0 10月 11 02:45 multi-master.info
drwx------. 2 mysql mysql 4096 10月 11 02:45 mysql
-rw-rw----. 1 mysql mysql 328 10月 11 02:55 mysql_bin.000001
-rw-rw----. 1 mysql mysql 19 10月 11 02:55 mysql_bin.index
srwxrwxrwx. 1 mysql mysql 0 10月 11 02:55 mysql.sock
-rw-rw----. 1 mysql mysql 16 10月 11 02:45 mysql_upgrade_info
drwx------. 2 mysql mysql 20 10月 11 02:45 performance_schema
MariaDB [(none)]> show master status;
+------------------+----------+--------------+------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+------------------+----------+--------------+------------------+
| mysql_bin.000001 | 328 | | |
+------------------+----------+--------------+------------------+
1 row in set (0.000 sec)
从库操作
修i该配置文件
[root@slave ~]# vim /etc/my.cnf.d/mariadb-server.cnf
[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
log-error=/var/log/mariadb/mariadb.log
pid-file=/run/mariadb/mariadb.pid
server-id = 20
relay-log = myrelay
MariaDB [(none)]> change master to
-> master_host='192.168.145.169',
-> master_user='repl',
-> master_password='repl123!',
-> master_log_file='mysql_bin.000002',
-> master_log_pos=328;
MariaDB [(none)]> start slave;
Query OK, 0 rows affected (0.001 sec)
MariaDB [(none)]> show slave status\G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.145.169
Master_User: repl
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql_bin.000002
Read_Master_Log_Pos: 328
Relay_Log_File: myrelay.000002
Relay_Log_Pos: 555
Relay_Master_Log_File: mysql_bin.000002
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Replicate_Do_DB:
Replicate_Ignore_DB:
Replicate_Do_Table:
Replicate_Ignore_Table:
Replicate_Wild_Do_Table:
Replicate_Wild_Ignore_Table:
Last_Errno: 0
Last_Error:
Skip_Counter: 0
Exec_Master_Log_Pos: 328
Relay_Log_Space: 856
Until_Condition: None
Until_Log_File:
Until_Log_Pos: 0
Master_SSL_Allowed: No
Master_SSL_CA_File:
Master_SSL_CA_Path:
Master_SSL_Cert:
Master_SSL_Cipher:
Master_SSL_Key:
Seconds_Behind_Master: 0
Master_SSL_Verify_Server_Cert: No
Last_IO_Errno: 0
Last_IO_Error:
Last_SQL_Errno: 0
Last_SQL_Error:
Replicate_Ignore_Server_Ids:
Master_Server_Id: 10
Master_SSL_Crl:
Master_SSL_Crlpath:
Using_Gtid: No
Gtid_IO_Pos:
Replicate_Do_Domain_Ids:
Replicate_Ignore_Domain_Ids:
Parallel_Mode: conservative
SQL_Delay: 0
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State: Slave has read all relay log; waiting for the slave I/O thread to update it
Slave_DDL_Groups: 0
Slave_Non_Transactional_Groups: 0
Slave_Transactional_Groups: 0
1 row in set (0.000 sec)
授权zabbix账户 MariaDB [(none)]> grant select on *.* to 'zabbix'@'localhost' identified by 'zabbix123!'; Query OK, 0 rows affected (0.000 sec) MariaDB [(none)]> flush privileges; Query OK, 0 rows affected (0.000 sec) MariaDB [(none)]> grant super,replication client on *.* to 'zabbix'@'localhost' identified by 'zabbix123!'; Query OK, 0 rows affected (0.000 sec) MariaDB [(none)]> flush privileges; Query OK, 0 rows affected (0.000 sec) 如果关闭slave执行脚本会显示1 MariaDB [(none)]> stop slave; Query OK, 0 rows affected (0.001 sec) [root@slave scripts]# ./check_replication.sh 1 [root@slave ~]# vim /usr/local/etc/zabb
声音报警
mysql主从延迟
MariaDB [(none)]> show slave status\G *************************** 1. row *************************** Slave_IO_State: Waiting for master to send event Master_Host: 192.168.145.169 Master_User: repl Master_Port: 3306 Connect_Retry: 60 Master_Log_File: mysql_bin.000002 Read_Master_Log_Pos: 328 Relay_Log_File: myrelay.000002 Relay_Log_Pos: 555 Relay_Master_Log_File: mysql_bin.000002 Slave_IO_Running: Yes Slave_SQL_Running: Yes Replicate_Do_DB: Replicate_Ignore_DB: Replicate_Do_Table: Replicate_Ignore_Table: Replicate_Wild_Do_Table: Replicate_Wild_Ignore_Table: Last_Errno: 0 Last_Error: Skip_Counter: 0 Exec_Master_Log_Pos: 328 Relay_Log_Space: 856 Until_Condition: None Until_Log_File: Until_Log_Pos: 0 Master_SSL_Allowed: No Master_SSL_CA_File: Master_SSL_CA_Path: Master_SSL_Cert: Master_SSL_Cipher: Master_SSL_Key: Seconds_Behind_Master: 0 Master_SSL_Verify_Server_Cert: No Last_IO_Errno: 0 Last_IO_Error: Last_SQL_Errno: 0 Last_SQL_Error: Replicate_Ignore_Server_Ids: Master_Server_Id: 10 Master_SSL_Crl: Master_SSL_Crlpath: Using_Gtid: No Gtid_IO_Pos: Replicate_Do_Domain_Ids: Replicate_Ignore_Domain_Ids: Parallel_Mode: conservative SQL_Delay: 0 SQL_Remaining_Delay: NULL Slave_SQL_Running_State: Slave has read all relay log; waiting for the slave I/O thread to update it Slave_DDL_Groups: 0 Slave_Non_Transactional_Groups: 0 Slave_Transactional_Groups: 0 1 row in set (0.000 sec) [root@slave scripts]# chmod +x check_replication_delay.sh [root@slave scripts]# cat check_replication.sh #!/bin/bash delay=$(mysql -uzabbix -p'zabbix123!' -e 'show slave status\G'|grep 'Behind'|awk '{print $2}') if [ $delay != NULL ];then echo $delay else echo '0' fi [root@slave scripts]# ./check_replication_delay.sh 0 //修改zabbix_agentd.conf配置文件 [root@slave ~]# vim /usr/local/etc/zabbix_agentd.conf 525 UserParameter=check_replication,/scripts/check_replication.sh 526 UserParameter=check_replication_delay,/scripts/check_replicatio n_delay.sh [root@slave ~]# pkill zabbix [root@slave ~]# zabbix_agentd [root@zabbix ~]# zabbix_get -s 192.168.145.171 -k check_replication_delay 0
用户和组权限的设置
[root@zabbix ~]# mysql -uroot -pzs123! mysql: [Warning] Using a password on the command line interface can be insecure. Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 2461 Server version: 5.7.34 MySQL Community Server (GPL) Copyright (c) 2000, 2021, Oracle and/or its affiliates. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. mysql> show databases; +--------------------+ | Database | +--------------------+ | information_schema | | mysql | | performance_schema | | sys | | zabbix | +--------------------+ 5 rows in set (0.01 sec) mysql> use zabbix; Reading table information for completion of table and column names You can turn off this feature to get a quicker startup with -A Database changed mysql> show tables; +----------------------------+ | Tables_in_zabbix | +----------------------------+ | acknowledges | | actions | | alerts | | auditlog | | auditlog_details | | autoreg_host | | conditions | | config | | config_autoreg_tls | | corr_condition | | corr_condition_group | | corr_condition_tag | | corr_condition_tagpair | | corr_condition_tagvalue | | corr_operation | | correlation | | dashboard | | dashboard_page | | dashboard_user | | dashboard_usrgrp | | dbversion | | dchecks | | dhosts | | drules | | dservices | | escalations | | event_recovery | | event_suppress | | event_tag | | events | | expressions | | functions | | globalmacro | | globalvars | | graph_discovery | | graph_theme | | graphs | | graphs_items | | group_discovery | | group_prototype | | history | | history_log | | history_str | | history_text | | history_uint | | host_discovery | | host_inventory | | host_tag | | hostmacro | | hosts | | hosts_groups | | hosts_templates | | housekeeper | | hstgrp | | httpstep | | httpstep_field | | httpstepitem | | httptest | | httptest_field | | httptest_tag | | httptestitem | | icon_map | | icon_mapping | | ids | | images | | interface | | interface_discovery | | interface_snmp | | item_condition | | item_discovery | | item_parameter | | item_preproc | | item_rtdata | | item_tag | | items | | lld_macro_path | | lld_override | | lld_override_condition | | lld_override_opdiscover | | lld_override_operation | | lld_override_ophistory | | lld_override_opinventory | | lld_override_opperiod | | lld_override_opseverity | | lld_override_opstatus | | lld_override_optag | | lld_override_optemplate | | lld_override_optrends | | maintenance_tag | | maintenances | | maintenances_groups | | maintenances_hosts | | maintenances_windows | | media | | media_type | | media_type_message | | media_type_param | | module | | opcommand | | opcommand_grp | | opcommand_hst | | opconditions | | operations | | opgroup | | opinventory | | opmessage | | opmessage_grp | | opmessage_usr | | optemplate | | problem | | problem_tag | | profiles | | proxy_autoreg_host | | proxy_dhistory | | proxy_history | | regexps | | report | | report_param | | report_user | | report_usrgrp | | rights | | role | | role_rule | | script_param | | scripts | | service_alarms | | services | | services_links | | services_times | | sessions | | sysmap_element_trigger | | sysmap_element_url | | sysmap_shape | | sysmap_url | | sysmap_user | | sysmap_usrgrp | | sysmaps | | sysmaps_element_tag | | sysmaps_elements | | sysmaps_link_triggers | | sysmaps_links | | tag_filter | | task | | task_acknowledge | | task_check_now | | task_close_problem | | task_data | | task_remote_command | | task_remote_command_result | | task_result | | timeperiods | | token | | trends | | trends_uint | | trigger_depends | | trigger_discovery | | trigger_queue | | trigger_tag | | triggers | | users | | users_groups | | usrgrp | | valuemap | | valuemap_mapping | | widget | | widget_field | +----------------------------+ 166 rows in set (0.00 sec) mysql> select * from users\G *************************** 1. row *************************** userid: 1 username: Admin name: Zabbix surname: Administrator passwd: $2y$10$92nDno4n0Zm7Ej7Jfsz8WukBfgSS/U0QkIuu8WkJPihXBb2A1UrEK url: autologin: 1 autologout: 0 lang: default refresh: 30s theme: default attempt_failed: 0 attempt_ip: attempt_clock: 0 rows_per_page: 50 timezone: default roleid: 3 *************************** 2. row *************************** userid: 2 username: guest name: surname: passwd: $2y$10$89otZrRNmde97rIyzclecuk6LwKAsHN0BcvoOKGjbT.BwMBfm7G06 url: autologin: 0 autologout: 15m lang: default refresh: 30s theme: default attempt_failed: 0 attempt_ip: attempt_clock: 0 rows_per_page: 50 timezone: default roleid: 4 2 rows in set (0.00 sec) mysql>
原文地址：https://www.cnblogs.com/Aimmi/p/15391664.html
- 调用{dede:likewords}为dedecms添加相关搜索词
- 重新调整Keras中长短期记忆网络的输入数据
- Linux内存(手动释放cache)
- django中间件Middleware
- springboot kafka集成(实现producer和consumer)
- 分布式锁的实现(redis)
- springboot scheduled并发配置
- RabbitMQ高可用集群配置
- zookeeper curator处理会话过期session expired
- redis事务
- 数据库表反向生成(一) MyBatis-generator与IDEA的集成
- 数据库表反向生成(二) Django ORM inspectdb
- RabbitMQ与AMQP协议
- 大数据算法设计模式(2) - 左外链接(leftOuterJoin) spark实现
- MySQL 教程
- MySQL 安装
- MySQL 管理与配置
- MySQL PHP 语法
- MySQL 连接
- MySQL 创建数据库
- MySQL 删除数据库
- MySQL 选择数据库
- MySQL 数据类型
- MySQL 创建数据表
- MySQL 删除数据表
- MySQL 插入数据
- MySQL 查询数据
- MySQL where 子句
- MySQL UPDATE 查询
- MySQL DELETE 语句
- MySQL LIKE 子句
- mysql order by
- Mysql Join的使用
- MySQL NULL 值处理
- MySQL 正则表达式
- MySQL 事务
- MySQL ALTER命令
- MySQL 索引
- MySQL 临时表
- MySQL 复制表
- 查看MySQL 元数据
- MySQL 序列 AUTO_INCREMENT
- MySQL 处理重复数据
- MySQL 及 SQL 注入
- MySQL 导出数据
- MySQL 导入数据
- MYSQL 函数大全
- MySQL Group By 实例讲解
- MySQL Max()函数实例讲解
- mysql count函数实例
- MYSQL UNION和UNION ALL实例
- MySQL IN 用法
- MySQL between and 实例讲解
- JavaScript错误处理完全指南
- 从头创建您自己的vue.js——第4部分(构建反应性)
- Oracle 数据库-服务器端字符集查看方法
- Pywinauto 应用后端类型选择错误：AttributeError: 'NoneType' object has no attribute 'backend'. 原因及解决办法
- 恕我直言你可能真的不会java第11篇-Stream API终端操作
- Python+selenium 自动化-滚动的使用方法，如何滚动到元素的位置
- 恕我直言你可能真的不会java第10篇-集合元素归约
- Python+selenium 自动化-模拟键盘输入、点击操作，如何查看所支持的全部键位名称
- Uber为什么放弃Postgres选择迁移到MySQL？
- BAT 批处理命令 - 文件批量复制、克隆功能实例演示
- 【35期】谈谈你对Java线程之间通信方式的理解
- mac 技术篇-修改hosts文件，hosts文件位置
- 一行能装逼的 JavaScript 代码
- python 技术篇-时间戳的获取，记录程序处理时间
- 基于SpringBoot AOP面向切面编程实现Redis分布式锁