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centos7maiadb主从复制搭建-创新互联
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
==========================================================================================
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
[root@salt-node1 ~]# vim /etc/my.cnf [mysqld] innodb_file_per_table=NO log-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=mixed server-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 risks symbolic-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重启node1上的mysql服务
systemctl restart mariadb.service登录mysql：
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
grant replication slave on *.* to 'root'@'192.168.56.%' identified by '123456';加锁：
实际工作中，需要禁止数据库的写入，要给数据库上锁
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）
MariaDB [(none)]> show master status; +-------------------+----------+--------------+------------------+ | File | Position | Binlog_Do_DB | Binlog_Ignore_DB | +-------------------+----------+--------------+------------------+ | master-bin.000001 | 398 | | | +-------------------+----------+--------------+------------------+ 1 row in set (0.00 sec)备份主库的数据：
mysqldump -uroot -p --all-databases > /tmp/db.sql==========================================================================================
下面开始配置从库：
导入数据到从库当中
mysql -uroot -p修改配置文件my.cnf：
[root@salt-node2 ~]# cat /etc/my.cnf [mysqld] innodb_file_per_table=NO #log-bin=mysql-bin binlog_format=mixed server-id = 12 relay-log = /var/lib/mysql/relay-bin #log_slave_updates = 1 read_only = on datadir=/var/lib/mysql socket=/var/lib/mysql/mysql.sock # Disabling symbolic-links is recommended to prevent assorted security risks symbolic-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重启服务：
systemctl restart mariadb.service登录mysql
mysql -uroot -p设置主从服务配置
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;开启主从服务：
start slave;查看从库状态：
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 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，需要排查故障主从验证，
#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)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
http://blog.csdn.net/mingliangniwo/article/details/54606894?locationNum=8&fps=1
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