准备安装包
从ORACLE官方网站下载最新版本的MYSQL客户端和服务器安装包，MYSQL目前采用整体打包下载，没单独的安装包下载，直接下载
V45446-01整体压缩包，里面包含最新版本MYSQL5.6.19的客户端和服务器安装包。
MySQL-client-advanced-5.6.19-1.el6.x86_64.rpm（V45446-01）
MySQL-server-advanced-5.6.19-1.el6.x86_64.rpm（V45446-01）
在redhat安装，还要准备MYSQL 关依赖包：
perl-5.10.1-136.el6.x86_64.rpm
libaio-0.3.107-10.el6.x86_64.rpm
mysql-lib5-5.1.71-1.el6.x86_64.rpm
一、mysql安装
1、安装系统、配置ip、配置/etc/hosts 文件
/etc/hosts 文件
192.168.1.21 replm
192.168.1.22 replsl
配置ip
[root@replm mysql]# cat /etc/sysconfig/network-scripts/ifcfg-eth0
DEVICE=eth0
HWADDR=08:00:27:a7:0e:e2
TYPE=Ethernet
ONBOOT=yes
NM_CONTROLLED=yes
BOOTPROTO=static
IPADDR=192.168.1.21
NETMASK=255.255.255.0
GATEWAY=192.168.1.1
IPV6INIT=no
USERCTL=no
2、上传rpm 安装包
3、关闭防火墙 （需要关闭，否则同步可能不成功，我遇到此问题，后面详细介绍遇到的问题）
service iptables stop --停止防火墙
chkconfig iptables off --配置系统重启不启动防火墙
4、配置yum源
mount /dev/cdrom /mnt/ --挂载光驱
vi /etc/yum.repos.d/mysql.repo
[mysql]
name=mysql
baseurl=file:///mnt
gpgcheck=0
enable=1
5、删除系统自带的 mysql-libs* 包，否则安装MySQL-server-advanced-5.6.19-1.el6.x86_64.rpm 报错，删除命令为：
yum -y remove mysql-libs-*
6、安装rpm包，命令为 rpm
rpm -ivh MySQL-devel-advanced-5.6.19-1.el6.x86_64.rpm
rpm -ivh MySQL-client-advanced-5.6.19-1.el6.x86_64.rpm
rpm -ivh MySQL-server-advanced-5.6.19-1.el6.x86_64.rpm
7、启动mysql
service mysql start
设置开启自启动
chkconfig mysql on
8、登陆MYSQL，并设置root用户密码
Mysql安装后，会将默认密码放在/root/.mysql_secret文件中，第一次登陆时，请采用改密码登陆：
cat /root/.mysql_secret
# The random password set for the root user at Thu Jul 10 16:23:52 2014 (local time): GeEUu0kRfQKatLY0
使用默认密码登陆mysql：
mysql -uroot -p GeEUu0kRfQKatLY0
设置新的root密码，假设设置为111111
mysql> SET PASSWORD = PASSWORD(‘111111‘);
设置root用户登陆权限，使用户可以使用客户端远程登陆：
mysql> use mysql;
mysql> GRANT ALL PRIVILEGES ON *.* TO root@"%" IDENTIFIED BY "111111";
mysql> update user set password = password(‘111111‘) where user=‘root‘;
刷新权限,权限修改才能生效：
mysql>flush privileges;
注意：远程登陆并验证root用户访问没问题，再开始配置主从复制。
二、 MYSQL主从配置
1、先关闭服务：
service mysql stop
修改mysql配置文件，主从复制要求台机器server-id 不能相同，从库必须打开relay-log：
1）修改master 配置文件
vi /etc/my.cnf
server-id = 111
log-bin=/var/lib/mysql/binlog/mysql-bin.log
relay-log=/var/lib/mysql/relaylog/mysql-relay.log
创建日志路径：
mkdir /var/lib/mysql/binlog
mkdir /var/lib/mysql/relaylog
修改路径权限：
chown mysql:mysql /var/lib/mysql/binlog -R
chown mysql:mysql /var/lib/mysql/relaylog -R
2）修改从slave 配置文件
vi /etc/my.cnf
加入以下内容：
server-id = 222
log-bin=/var/lib/mysql/binlog/mysql-bin.log
relay-log=/var/lib/mysql/relaylog/mysql-relay.log
创建日志路径：
mkdir /var/lib/mysql/binlog
mkdir /var/lib/mysql/relaylog
修改路径权限：
chown mysql:mysql /var/lib/mysql/binlog -R
chown mysql:mysql /var/lib/mysql/relaylog -R
2、master 和salve 启动mysql实例
service mysql start
3、登陆master 和slave 设置专用的复制账号repl，主从都执行
设置主从账号，起名为repl，设置其访问范围为192.168.1网段内，密码123456：
mysql > grant replication slave,replication client on *.* to ‘repl‘@‘192.168.1.%‘ identified by ‘111111‘;
刷新权限：
mysql > flush privileges;
查看主库当前位置（主库执行）
mysql> show master status;
+------------------+----------+--------------+------------------+-------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+------------------+----------+--------------+------------------+-------------------+
| mysql-bin.000003 | 120 | | | |
+------------------+----------+--------------+------------------+-------------------+
1 row in set (0.00 sec)
3、从库开始同步，同步位置为主库当前位置（从库执行）：
mysql>change master to master_host=‘192.168.100.6‘,master_user=‘repl‘,
master_password=‘123456‘,master_log_file=‘mysql-bin.000003‘,master_log_pos=235;
启动slave
mysql> start slave;
检查从库是否复制正常（Slave_IO_Running和Slave_SQL_Running都Yes，必须都为yes ，其他状态都不复制）
mysql> show slave status\G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.1.21
Master_User: repl
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000003
Read_Master_Log_Pos: 120
Relay_Log_File: replsl-relay-bin.000002
Relay_Log_Pos: 283
Relay_Master_Log_File: mysql-bin.000003
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: 120
Relay_Log_Space: 457
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: 111
Master_UUID: 7b4e0e11-05dc-11e5-b3be-080027a70ee2
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 (0.00 sec)
配置完成
三、测试
1、master端上创建数据库和表、并插入数据
mysql> create database zxmdb;
Query OK, 1 row affected (0.00 sec)
mysql> use zxmdb;
Database changed
mysql> create table t1 (id int,name char(10));
Query OK, 0 rows affected (0.09 sec)
mysql> insert into t1 values (1,‘zxm‘);
Query OK, 1 row affected (0.02 sec)
mysql> insert into t1 values (1,‘zxm‘);
Query OK, 1 row affected (0.02 sec)
mysql> insert into t1 values (1,‘zxm‘);
Query OK, 1 row affected (0.05 sec)
mysql> insert into t1 values (2,‘king ‘);
Query OK, 1 row affected (0.04 sec)
2、slave端验证
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| test |
| zxmdb |
+--------------------+
5 rows in set (0.00 sec)
mysql> use zxmdb
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> select * from t1;
+------+------+
| id | name |
+------+------+
| 1 | zxm |
| 1 | zxm |
| 1 | zxm |
| 2 | king |
+------+------+
4 rows in set (0.00 sec)
四、总结
遇到问题
1、安装过程中报错，无法安装 MySQL-server-advanced-5.6.19-1.el6.x86_64.rpm ，原因是redhat 自带安装了 mysql-libs-
5.1.66-2.el6_3.x86_64，已经存在某些文件，导致无法安装。
解决方法： 删除 mysql-libs-5.1.66-2.el6_3.x86_64
yum -y remove mysql-libs-*
然后安装成功
2、slave端执行show slave status 输出 Slave_IO_Running: Connecting ，导致不能复制数据；
Last_IO_Error: error connecting to master ‘repl@192.168.1.21:3306‘ - retry-time: 60 retries: 36
分析原因：slave端无法连接到master端
1）repl 用户权限不对
2）端口被占用
3）防火墙阻挡
1）测试连接，果然报错
mysql -u repl -p111111 -h 192.168.1.21
Warning: Using a password on the command line interface can be insecure.
ERROR 2003 (HY000): Can‘t connect to MySQL server on ‘192.168.1.21‘ (113)
2）关闭防火墙测试连接，正常连接，然后重启slave ，复制正常
1. my.cnf 配置文件中 skip-networking 、bindaddress 被配置
skip-networking 导致所有TCP/IP端口没有被监听,其他客户端都无法用网络连接到本mysql服务器
bindaddress这个参数是mysql服务器只回应配置ip地址的请求连接
原文地址：http://freebile.blog.51cto.com/447744/1656519
