wget https://cdn.mysql.com//Downloads/MySQL-5.7/mysql-5.7.20-linux-glibc2.12-x86_64.tar.gz

[root@mysql-slave ~]# mv mysql-5.7.20-linux-glibc2.12-x86_64 /usr/local/mysql

[root@mysql-slave ~]# cd /usr/local/mysql

[root@mysql-slave mysql]# mkdir –p data/mysql #存放数据目录

[root@mysql-slave mysql]# useradd mysql -s /sbin/nologin

[root@mysql-slave mysql]# chown -R mysql:mysql data/mysql/

[root@localhost mysql]# ./bin/mysqld --user=mysql --basedir=/usr/local/mysql --datadir=/usr/local/mysql/data/mysql –initialize

# 初始化并安装,会提示产生一个默认密码：root@localhost: Tb8lw2pmN&dH

支持加密

# ./bin/mysql_ssl_rsa_setup --datadir=/usr/local/mysql/data/mysql

#/usr/local/mysql/support-files/mysql.server start

启动看看，我这里没有成功，发现配置文件存在问题。

把配置文件复制到/etc/my.cnf

# cp /usr/local/mysql/support-files/my-default.cnf /etc/my.cnf

# vim /etc/my.cnf
[root@localhost bin]# cat /etc/my.cnf  #照如下修改配置文件

[mysqld]

basedir=/usr/local/mysql

datadir=/usr/local/mysql/data/mysql

# 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

character_set_server=utf8

init_connect='SET NAMES utf8'

[mysqld_safe]

log-error=

pid-file=/var/run/mariadb/mariadb.pid

#

# include all files from the config directory

#

!includedir /etc/my.cnf.d

[client]

default-character-set=utf8　　

[root@localhost bin]# cp /usr/local/mysql/support-files/mysql.server /etc/init.d/mysqld

[root@localhost bin]# chmod 755 /etc/init.d/mysqld

[root@localhost mysql]# systemctl start mysqld

[root@localhost mysql]# mysql -uroot –p

-bash: mysql: command not found

[root@localhost mysql]# cd bin

[root@localhost bin]# ./mysql

[root@localhost bin]# ./mysql -uroot -p

Enter password:

Welcome to the MySQL monitor.  Commands end with ; or \g.

Your MySQL connection id is 4

Server version: 5.7.20

Copyright (c) 2000, 2017, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its

affiliates. Other names may be trademarks of their respective

owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> show databases;

ERROR 1820 (HY000): You must reset your password using ALTER USER statement before executing this statement.

mysql> alter user 'root'@'localhost' identified by '1';

Query OK, 0 rows affected (0.00 sec)

mysql> flush privileges;

Query OK, 0 rows affected (0.00 sec)

在[mysqld]下添加

server-id=1

log-bin=/usr/local/mysql/data/mysql/mysql-bin

[root@mysql-m mysql]# systemctl restart mysqld

mysql> grant replication slave on *.* to 'rep'@'192.168.56.%' identified by '1';

Query OK, 0 rows affected, 1 warning (0.01 sec)

mysql> flush privileges;

Query OK, 0 rows affected (0.01 sec)

锁表：

mysql> flush table with read lock;

查看主库状态：

mysql> show master status;

+------------------+----------+--------------+------------------+-------------------+

| File             | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |

+------------------+----------+--------------+------------------+-------------------+

| mysql-bin.000001 |      599 |              |                  |                   |

[root@mysql-m ~]# /usr/local/mysql/bin/mysqldump -uroot -p'1' --events -A -B | gzip > /server/backup/mysql_bak.$(data+%F).sql.gz

-bash: data+%F: command not found

mysqldump: [Warning] Using a password on the command line interface can be insecure.

解锁：

mysql> unlock tables;

Query OK, 0 rows affected (0.00 sec)

[root@mysql-s mysql]# vim /etc/my.cnf  #如果有开启bin-log建议关闭。

server-id=2

重启mysql服务

[root@mysql-s mysql]# systemctl restart mysqld

检查从库log-bin

mysql> show variables like 'log_bin';

+---------------+-------+

| Variable_name | Value |

+---------------+-------+

| log_bin       | OFF   |

+---------------+-------+

1 row in set (0.01 sec)

把备份文件复制到从库并解压

[root@mysql-s ~]# cd /server/backup/

[root@mysql-s backup]# gzip -d mysql_bak.sql.gz

[root@mysql-s backup]# ll

total 764

-rw-r--r-- 1 root root 780324 Nov  5 14:59 mysql_bak.sql

还原备份文件到从库

[root@mysql-s backup]# cd /usr/local/mysql

[root@mysql-s mysql]# bin/mysql -uroot -p'1' < /server/backup/mysql_bak.sql

mysql: [Warning] Using a password on the command line interface can be insecure.

mysql> CHANGE MASTER TO

    -> MASTER_HOST='192.168.56.104',

    -> MASTER_PORT=3306,

    -> MASTER_USER='rep',

    -> MASTER_PASSWORD='1',

    -> MASTER_LOG_FILE='mysql-bin.000001',

    -> MASTER_LOG_POS=599;

Query OK, 0 rows affected, 2 warnings (0.03 sec)

开启从库

mysql> start slave;

Query OK, 0 rows affected (0.01 sec)

mysql> show slave status\G

*************************** 1. row ***************************

               Slave_IO_State:

                  Master_Host: 192.168.56.104

                  Master_User: rep

                  Master_Port: 3306

                Connect_Retry: 60

              Master_Log_File: mysql-bin.000001

          Read_Master_Log_Pos: 599

               Relay_Log_File: mysql-s-relay-bin.000001

                Relay_Log_Pos: 4

        Relay_Master_Log_File: mysql-bin.000001

             Slave_IO_Running: No

            Slave_SQL_Running: Yes

2017-11-05T07:12:16.236482Z 6 [ERROR] Slave I/O for channel '': Fatal error: The slave I/O thread stops because master and slave have equal MySQL serve

[root@mysql-s mysql]# vim auto.cnf

[auto]

server-uuid=ff3d3303-c16d-11e7-b885-080027c5cf4b

把上面uuid最后原来3b-修改为4b重启数据库后，启动从库，成功！！！

mysql> start slave;

Query OK, 0 rows affected (0.01 sec)

mysql> show slave status\G

*************************** 1. row ***************************

Slave_IO_State: Waiting for master to send event

Master_Host: 192.168.56.104

Master_User: rep

Master_Port: 3306

Connect_Retry: 60

Master_Log_File: mysql-bin.000001

Read_Master_Log_Pos: 599

Relay_Log_File: mysql-s-relay-bin.000004

Relay_Log_Pos: 320

Relay_Master_Log_File: mysql-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: 599

Relay_Log_Space: 695

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: ff3d3303-c16d-11e7-b885-080027c5cf3b

Master_Info_File: /usr/local/mysql/data/mysql/master.info

SQL_Delay: 0

SQL_Remaining_Delay: NULL

Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates

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

Replicate_Rewrite_DB:

Channel_Name:

Master_TLS_Version:

1 row in set (0.00 sec)

mysql> create database aaa;

Query OK, 1 row affected (0.01 sec)

查看从库：

mysql> show databases;

+--------------------+

| Database           |

+--------------------+

| information_schema |

| aaa                |

| mysql              |

| performance_schema |

| sys                |

+--------------------+

5 rows in set (0.01 sec)