分享程序员开发的那些事...
更新时间：2022-09-06 12:40:45
需求：
由于要使用saltstack，部署环境，先手动搭建了下主从环境，发现原来的word资料都找不到了，所以这次赶紧的记录到博客当中！！
环境：
两台设备，ip地址分别为：
node1：192.168.56.11
node2：192.168.56.12
系统：Centos7
软件包：使用系统自带的yum 来安装的mariadb
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安装：
分别在两台设备上安装数据库mariadb，使用yum来安装的，可以更换成过内的yum源来操作
命令：yum install -y mariadb mariadb-server
配置：
先配置node1上的master配置
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[root@salt-node1 ~]# vim /etc/my.cnf
[mysqld]innodb_file_per_table=NOlog-bin=/var/lib/mysql/master-bin #这里如果不指定路径默认是在datadir下面生成
binlog_format=mixedserver-id = 11#这个主节点一定要是唯一的
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
# Disabling symbolic-links is recommended to prevent assorted security riskssymbolic-links=0# Settings user and group are ignored when systemd is used.# If you need to run mysqld under a different user or group,# customize your systemd unit file for mariadb according to the# instructions in http://fedoraproject.org/wiki/Systemd[mysqld_safe]log-error=/var/log/mariadb/mariadb.log
pid-file=/var/run/mariadb/mariadb.pid
## include all files from the config directory#!includedir /etc/my.cnf.d
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重启node1上的mysql服务
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systemctl restart mariadb.service |
登录mysql：
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mysql -uroot -p我这里测试就没有设置密码 |
创建帐号并赋予replication的权限。从库,主从库复制数据时需要使用这个帐号进行
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grant replication slave on *.* to 'root'@'192.168.56.%' identified by '123456';
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加锁：
实际工作中，需要禁止数据库的写入，要给数据库上锁
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FLUSH TABLES WITH READ LOCK; |
记录主库的binlog日志文件和位置信息（这个信息，要在从库配置的时候用到）
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MariaDB [(none)]> show master status;+-------------------+----------+--------------+------------------+| File | Position | Binlog_Do_DB | Binlog_Ignore_DB |+-------------------+----------+--------------+------------------+| master-bin.000001 | 398 | | |+-------------------+----------+--------------+------------------+1 row in set (0.00 sec)
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备份主库的数据：
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mysqldump -uroot -p --all-databases > /tmp/db.sql
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==========================================================================================
下面开始配置从库：
导入数据到从库当中
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mysql -uroot -p </tmp/db.sql
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修改配置文件my.cnf：
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[root@salt-node2 ~]# cat /etc/my.cnf
[mysqld]innodb_file_per_table=NO#log-bin=mysql-binbinlog_format=mixedserver-id = 12
relay-log = /var/lib/mysql/relay-bin
#log_slave_updates = 1read_only = ondatadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
# Disabling symbolic-links is recommended to prevent assorted security riskssymbolic-links=0# Settings user and group are ignored when systemd is used.# If you need to run mysqld under a different user or group,# customize your systemd unit file for mariadb according to the# instructions in http://fedoraproject.org/wiki/Systemd[mysqld_safe]log-error=/var/log/mariadb/mariadb.log
pid-file=/var/run/mariadb/mariadb.pid
## include all files from the config directory#!includedir /etc/my.cnf.d
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重启服务：
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systemctl restart mariadb.service |
登录mysql
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mysql -uroot -p |
设置主从服务配置
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CHANGE MASTER TO MASTER_HOST='192.168.56.11',MASTER_USER='root', MASTER_PASSWORD='123456', MASTER_LOG_FILE='master-bin.000001', MASTER_LOG_POS= 398;
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开启主从服务：
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start slave; |
查看从库状态：
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MariaDB [(none)]> show slave status\G;*************************** 1. row *************************** Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.56.11
Master_User: root
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: master-bin.000001
Read_Master_Log_Pos: 485
Relay_Log_File: relay-bin.000002
Relay_Log_Pos: 617
Relay_Master_Log_File: master-bin.000001
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: 485
Relay_Log_Space: 905
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: 11
1 row in set (0.00 sec)
ERROR: No query specified |
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Slave_IO_Running: Yes #这里必须为yes，如果不是，需要排查故障
Slave_SQL_Running: Yes #这里必须为yes，如果不是，需要排查故障
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主从验证，
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#主库创建数据库MariaDB [(none)]> create database jiayou ;Query OK, 1 row affected (0.00 sec)#从库查看是否同步过来这个数据库MariaDB [(none)]> show databases;+--------------------+| Database |+--------------------+| information_schema || gg || jiayou || kk || mysql || performance_schema || salt || test |
+--------------------+8 rows in set (0.00 sec)
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有时候会有一些故障问题，可以参考下面这个博客，自己懒的写了
本文转自 kesungang 51CTO博客，原文链接：http://blog.51cto.com/sgk2011/1911038，如需转载请自行联系原作者