Contents
- 环境准备
- 更改my.cnf
- 开启slave服务
一、环境准备
查看已有mysql的版本
mysql -uroot -p
>select version();
下载相对应的mysql版本：
下载地址:http://dev.mysql.com/downloads/mysql
1）解压
#解压
tar-zxvf mysql-5.6.35-linux-glibc2.5-x86_64.tar.gz
#复制解压后的mysql目录
cp-r mysql-5.6.35-linux-glibc2.5-x86_64 /usr/local/mysql
2）添加用户组和用户
#添加用户组
groupadd mysql
#添加用户mysql 到用户组mysql
useradd -g mysql mysql
3）安装
cd /usr/local/mysql/
mkdir /data/mysql
chown -R mysql:mysql /usr/local/mysql
./scripts/mysql_install_db --user=mysql --datadir=/usr/local/mysql/data/mysql
cp support-files/mysql.server /etc/init.d/mysqld
chmod 755 /etc/init.d/mysqld
cp support-files/my-default.cnf /etc/my.cnf
#修改启动脚本
vi /etc/init.d/mysqld
#修改项：
basedir=/usr/local/mysql/
datadir=/usr/local/mysql/data/mysql
#启动服务
service mysqld start
#测试连接
./mysql/bin/mysql -uroot
#加入环境变量，编辑 /etc/profile，这样可以在任何地方用mysql命令了
export PATH=$PATH:/usr/local/mysql//bin
source /etc/profile
#创建root用户并授权
>GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'password' WITH GRANT OPTION;
>GRANT ALL PRIVILEGES ON *.* TO 'root'@'localhost' IDENTIFIED BY 'password' WITH GRANT OPTION;
>flush privileges;
#启动mysql
service mysqld start
#关闭mysql
service mysqld stop
#查看运行状态
service mysqld status
二、更改my.cnf
mysql_Master：10.150.10.152:3306
mysql_Slave：10.150.10.153:3306
Master端配置：
[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
character-set-server=utf8
log-bin=mysql-bin
binlog-format=ROW
server_id=1
max_connections = 500
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0
# Recommended in standard MySQL setup
sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES
transaction-isolation=Read-Committed
[mysqld_safe]
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid
character_set_server=utf8
Slave端配置：
[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
character-set-server=utf8
log-bin=mysql-bin
binlog-format=ROW
server_id=2
#skip-grant-tables
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0
# Recommended in standard MySQL setup
sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES
transaction-isolation=Read-Committed
[mysqld_safe]
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid
character_set_server=utf8
注意：my.cnf中server_id必须不一致！
三、开启slave服务
Master端：
创建同步账号
>GRANT REPLICATION SLAVE ON *.* to 'sync'@'%' identified by 'p123456' WITH GRANT OPTION;
>flush privileges;
在把Master端的历史数据同步到Slave端之前，查询下bin_log位置：
>show master status;
在shell环境中执行：
sudo mysqldump -uroot -p --all-databases > /tmp/allbak_152.sql
把Master端数据导出成.sql文件，并传到Slave端：
scp /tmp/allbak_152.sql 10.150.10.153:/tmp/
Slave端：
同步历史数据
>source /tmp/allbak_152;
同步数据
>change master to master_host='10.150.10.152',master_user='sync',master_password='p123456',master_log_file='mysql-bin.000104',master_log_pos=141856463;
开启同步及查看状态：
>start slave
>show slave status\G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 10.150.10.152
Master_User: sync
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000104
Read_Master_Log_Pos: 151852665
Relay_Log_File: mysqld-relay-bin.000044
Relay_Log_Pos: 151852828
Relay_Master_Log_File: mysql-bin.000104
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: 151852665
Relay_Log_Space: 151853049
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: 1
Master_UUID: dca1018d-b3b8-11e7-ac20-801844e3234c
Master_Info_File: /var/lib/mysql/master.info
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
Master_Retry_Count: 86400
Master_Bind:
Last_IO_Error_Timestamp:
Last_SQL_Error_Timestamp:
Master_SSL_Crl:
Master_SSL_Crlpath:
Retrieved_Gtid_Set:
Executed_Gtid_Set:
Auto_Position: 0
1 row in set (0.02 sec)
slave操作：
start slave;开启同步
stop slave;关闭同步
reset slave;#重置
show slave status\G查看同步状态
注意：导入历史数据时，选择业务数据更新慢或者停掉的时候，如果slave状态有问题，在Slave端mysql执行
set global sql_slave_skip_counter=1;忽略一条错误
尝试同步到相同bin_log位置。
ok！