需求：
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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
分享标题：centos7maiadb主从复制搭建
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