Linux环境下mysql主从同步环境搭建

#my.cnf添加内容
vim /etc/my.cnf
添加以内容：

## replication
server_id=195
binlog-ignore-db=mysql
binlog_format=mixed
log-bin=master-mysql-bin

#登录数据服务器，输入密码
mysql -h 主ip -u root -p
use mysql;

#新建同步账号（从数据库服务器IP与用户以及密码）
grant replication slave, replication client on *.* to 'root'@'从ip' identified by 'Nsk123';

#账号权限生效
flush privileges;

#master数据服务器状态
show master status

显示如下信息：

+-------------------------+----------+--------------+------------------+-------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+-------------------------+----------+--------------+------------------+-------------------+
| master-mysql-bin.000002 | 120 | | mysql | |
+-------------------------+----------+--------------+------------------+-------------------+

#从服务器安装好之后查看主服务器
show processlist\G;

如果显示以下信息则说明安装成功：

*************************** 1. row ***************************
Id: 2
User: root
Host: 从ip:32902
db: NULL
Command: Binlog Dump
Time: 37
State: Master has sent all binlog to slave; waiting for binlog to be updated
Info: NULL
*************************** 2. row ***************************

#在主数据库服务器上新建一个表，看下是不是会立即同步到从数据库对应数据库里面

#从服务器设置
#my.cnf添加内容
vim /etc/my.cnf
添加以内容：

## replication
server-id =194
relay-log=relay-bin
relay-log-index=relay-bin
replicate-ignore-db=mysql
replicate-ignore-db=information_schema

#链接从数据库服务器,输入密码
mysql -h 从ip -u root -p
use mysql

#停止从数据库服务器
stop slave;

#添加主数据库服务器相关信息（主IP,用户名，密码，主binlog文件名称，这个与show master status命令显示的File一致，,MASTER_LOG_POS是主日记文件的行数，show master status#命令显示的Position一致）

CHANGE MASTER TO MASTER_HOST='主ip',MASTER_USER='root',MASTER_PASSWORD='Nsk123',MASTER_LOG_FILE='master-mysql-bin.000002',MASTER_LOG_POS=120;

#显示从数据库服务器状态
show slave status\G;

显示如下信息：
*************************** 1. row ***************************
Slave_IO_State:
Master_Host: 主ip
Master_User: root
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: master-mysql-bin.000002
Read_Master_Log_Pos: 120
Relay_Log_File: relay-bin.000001
Relay_Log_Pos: 4
Relay_Master_Log_File: master-mysql-bin.000002
Slave_IO_Running: No
Slave_SQL_Running: No
Replicate_Do_DB:
Replicate_Ignore_DB: mysql,information_schema
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: 120
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: NULL
Master_SSL_Verify_Server_Cert: No
Last_IO_Errno: 1236
Last_IO_Error: Got fatal error 1236 from master when reading data from binary log: 'Could not find first log file name in binary log index file'
Last_SQL_Errno: 0
Last_SQL_Error:
Replicate_Ignore_Server_Ids:
Master_Server_Id: 195
Master_UUID: 7ed5adb7-0928-11d6-b93f-ec388f720bcb
Master_Info_File: /usr/local/dev/mysql/data/master.info
SQL_Delay: 0
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State:
Master_Retry_Count: 86400
Master_Bind:
Last_IO_Error_Timestamp: 181215 21:27:17
Last_SQL_Error_Timestamp:
Master_SSL_Crl:
Master_SSL_Crlpath:
Retrieved_Gtid_Set:
Executed_Gtid_Set:
Auto_Position: 0

#启动从数据库服务器
start slave;