linux安装mysql 8.0.x的完整步骤

# 下载mysql 

$ wget http://mirrors.163.com/mysql/Downloads/MySQL-8.0/mysql-8.0.13-el7-x86_64.tar.gz

# 解压
$ mysql tar -zxvf mysql-8.0.4-rc-linux-glibc2.12-x86_64.tar.gz -C /usr/local

# 修改文件夹名称 
$ mv mysql-8.0.4-rc-linux-glibc2.12-x86_64/ mysql

添加默认配置文件
$ vim/etc/my.cnf

[client]
port=3306
socket=/tmp/mysql.sock

[mysqld]
port=3306
user=mysql
socket=/tmp/mysql.sock
basedir=/usr/local/mysql
datadir=/usr/local/mysql/data


# 创建mysql组
$ groupadd mysql

# 创建mysql用户
$ useradd -g mysql mysql

# 创建mysql数据目录
$ mkdir $MYSQL_HOME/data

# 初始化mysql 
$ /usr/local/mysql/bin/mysqld --initialize --user=mysql --basedir=/usr/local/mysql/ --datadir=/usr/local/mysql/data/


# 初始化报错
bin/mysqld: error while loading shared libraries: libaio.so.1: cannot open shared object file: No such file or directory

# 解决方法
yum install -y libaio

# 初始化报错
2018-07-08T02:53:24.542370Z 0 [System] [MY-010116] /usr/local/mysql/bin/mysqld (mysqld 8.0.4-rc) starting as process 17745 ...
mysqld: Can't create/write to file '/tmp/mysql/data/ibd35qXQ' (Errcode: 13 - Permission denied)
2018-07-08T02:53:24.554816Z 1 [ERROR] [MY-011066] InnoDB: Unable to create temporary file; errno: 13
2018-07-08T02:53:24.554856Z 1 [ERROR] [MY-011066] InnoDB: InnoDB Database creation was aborted with error Generic error. You may need to delete the ibdata1 file before trying to start up again.
2018-07-08T02:53:24.555000Z 0 [ERROR] [MY-010020] Data Dictionary initialization failed.
2018-07-08T02:53:24.555033Z 0 [ERROR] [MY-010119] Aborting
2018-07-08T02:53:24.555919Z 0 [System] [MY-010910] /usr/local/mysql/bin/mysqld: Shutdown complete.

# 解决办法：修改/tmp/mysql的目录权限
$ chown -R mysql:mysql /tmp/mysql


# 初始化成功
> 如果无异常情况日志如下可以看到mysql默认会生成root账号和密码root@localhost: /TI(mjVAs1Ta

[root@localhost mysql]# bin/mysqld --initialize --user=mysql --basedir=/usr/local/mysql --datadir=/usr/local/mysql/data
2019-01-29T10:19:34.023997Z 0 [System] [MY-013169] [Server] /usr/local/mysql/bin/mysqld (mysqld 8.0.13) initializing of server in progress as process 4240
2019-01-29T10:19:39.764895Z 5 [Note] [MY-010454] [Server] A temporary password is generated for root@localhost: /TI(mjVAs1Ta
2019-01-29T10:19:43.041419Z 0 [System] [MY-013170] [Server] /usr/local/mysql/bin/mysqld (mysqld 8.0.13) initializing of server has completed

# 拷贝mysql启动文件到系统初始化目录
$ cp /usr/local/mysql/support-files/mysql.server /etc/init.d/mysqld


# 启动mysql服务器
$ service mysqld start

# 使用mysql客户端连接mysql
$ /usr/local/mysql/bin/mysql -u root -p password

修改mysql的默认初始化密码
> alter user 'root'@'localhost' identified by 'root';

# 创建用户 CREATE USER '用户名称'@'主机名称' INDENTIFIED BY '用户密码'
> create user 'jack'@'localhost' identified by 'jack';

# 授予权限 grant 权限 on 数据库.表 to '用户名'@'登录主机' [INDENTIFIED BY '用户密码'];
> grant replication slave on *.* to 'jack'@'localhost';

# 刷新
# $ flush privileges; 

# 修改root用户可以远程连接
> update mysql.user set host='%' where user='root';

# 查看mysql所用用户
> select user,host from mysql.user;

# docker 修改mysql的最大连接数
apt-get update
apt-get install vim
vim /etc/mysql/mysql.conf.d/mysqld.cnf
max_connections=1000

> alter user 'root'@'%' identified with mysql_native_password by 'root';

# 配置主服务添加如下配置
$ vim /etc/my.cnf

# 节点唯一id值
server-id=1

# 开启二进制日志
log-bin=mysql-bin

# 指定日志格式 有mixed|row|statement 推荐mixed
binlog-format=mixed

# 步进值auto_imcrement。一般有n台主MySQL就填n(可选配置)
auto_increment_increment=2 

# 起始值。一般填第n台主MySQL。此时为第一台主MySQL(可选配置)
auto_increment_offset=1 

# 忽略mysql库(可选配置)
binlog-ignore=mysql 

# 忽略information_schema库(可选配置)
binlog-ignore=information_schema 

# 要同步的数据库，默认所有库(可选配置)
replicate-do-db=db1


# slave 节点配置

# 节点唯一id值
server-id=2

# 开启二进制日志
log-bin=mysql-bin

# 步进值auto_imcrement。一般有n台主MySQL就填n(可选配置)
auto_increment_increment=2

# 起始值。一般填第n台主MySQL。此时为第一台主MySQL(可选配置)
auto_increment_offset=2

# 要同步的数据库，默认所有库(可选配置)
replicate-do-db=db1


# 查看 master 的状态 , 尤其是当前的日志及位置
> show master status;
+------------------+----------+--------------+------------------+-------------------+
| File    | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+------------------+----------+--------------+------------------+-------------------+
| mysql-bin.000004 |  1608 |    |     |     |
+------------------+----------+--------------+------------------+-------------------+

# 在slave节点执行如下命令

注意master_log_file 是对应show master status;中file的值，master_log_pos是对应position的值

> change master to
master_host='192.168.79.15',
master_user='root',
master_password='root',
master_log_file='mysql-bin.000009',
master_log_pos=0;

# 启动 slave 状态 ( 开始监听 msater 的变化 )
> start slave;

# 查看 slave 的状态 
> show slave status\G

*************************** 1. row ***************************
    Slave_IO_State: Waiting for master to send event
     Master_Host: 192.168.79.15
     Master_User: root
     Master_Port: 3306
    Connect_Retry: 60
    Master_Log_File: mysql-bin.000009
   Read_Master_Log_Pos: 863
    Relay_Log_File: node-6-relay-bin.000002
    Relay_Log_Pos: 500
  Relay_Master_Log_File: mysql-bin.000009
    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: 863
    Relay_Log_Space: 709
    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: 6291c709-23af-11e9-99fb-000c29071862
    Master_Info_File: mysql.slave_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: 
  Master_public_key_path: 
  Get_master_public_key: 0

# 当Slave_IO_Running: Yes和Slave_SQL_Running: Yes都为yes是说明主从复制正常


#重置 slave 状态 .
$ reset slave;

#暂停 slave 状态 ;
$ stop slave;