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普通用户Mysql 5.6.13 主从，主主及nagios的mysql slave监控

發(fā)布時間：2025/3/13 数据库 42 豆豆

生活随笔收集整理的這篇文章主要介紹了普通用户Mysql 5.6.13 主从，主主及nagios的mysql slave监控小編覺得挺不錯的,現(xiàn)在分享給大家,幫大家做個參考.

Master:192.168.209.19

Slave:192.168.209.20

mysql版本:mysql5.6.13

1. 以root身份創(chuàng)建普通用戶,如mysql,并創(chuàng)建mysql安裝目錄:

?? # useradd mysql

?? # passwd mysql

?? # mkdir /mysql

?? # chown mysql:mysql /mysql

安裝依賴包：

yum?-y?install??gcc?gcc-c++?autoconf?automake?zlib*?fiex*?libxml*?ncurses-devel?libmcrypt*?libtool-ltdl-devel*?make?cmake

2. 下載MySQL5.6.13完整開發(fā)版, 并將其拷貝到/mysql目錄下.

?? 文件: mysql-5.6.13.tar.gz

3. 以mysql用戶解包MySQL,并將MySQL解包后的目錄更改為/mysql/:

?? # su - mysql

?? $ cd

?? $ mv mysql-5.6.13.tar.gz /mysql

?? $ tar xvzf mysql-5.6.13.tar.gz

4. 配置MySQL:

?? $ cd /mysql/5.6.13

$cmake -DCMAKE_INSTALL_PREFIX=/mysql/mysql-5.6

$make

$make install

$cd /mysql/mysql-5.6/scripts

$ ./mysql_install_db --user=mysql --basedir=/mysql/mysql-5.6 --datadir=/mysql/mysql-5.6/data

#cp /mysql/mysql-5.6/support-files/mysql.server /etc/init.d/mysql

#cp /mysql/mysql-5.6/support-files/my-default.cnf /etc/my.cnf

啟動mysql

$/mysql/mysql-5.6/support-files/mysql.server start

error解決：

[ERROR] Fatal error: Can't open and lock privilege tables: Table 'mysql.user' doesn't exist

初始化數(shù)據(jù)庫就ok，即：./mysql_install_db --user=mysql --basedir=/mysql/mysql-5.6 --datadir=/mysql/mysql-5.6/data

5.配置主從：

5.1、主從服務器分別操作：

? 5.1.1、mysql版本一致

? 5.1.2、初始化表，啟動mysql

? 5.1.3、設置mysql root密碼，?/mysql/mysql-5.6/bin/mysqladmin -u root password ‘123456’

5.2、修改master:

?? #vi /etc/my.cnf

?????? [mysqld]

?????? log-bin=mysql-bin?? #啟用二進制日志

?????? server-id=20?????? #服務器ID標示，主從不一致

5.3、修改slave:

?? #vi /etc/my.cnf

?????? [mysqld]

?????? log-bin=mysql-bin?? #啟用二進制日志

?????? server-id=21? ? ? #服務器ID標示，主從不一致

5.2 登錄mysql master配置

#/mysql/mysql-5.6/bin/mysql -uroot -p123456?

?? mysql>GRANT REPLICATION SLAVE ON *.* to 'test'@'%' identified by '123456';?

#一般不用root帳號，“%”表示所有客戶端都可能連，只要帳號，密碼正確，此處可用具體客戶端IP代替，如192.168.209.20，加強安全。

6、登錄主服務器的mysql，查詢master的狀態(tài)

?? mysql>show master status;

?? +------------------+----------+--------------+------------------+

?? +------------------+----------+--------------+------------------+

?? | mysql-bin.000007 |????? 320 |????????????? |????????????????? |

?? +------------------+----------+--------------+------------------+

?? 1 row in set (0.00 sec)

?? 注：獲取file和position。

7、配置從服務器mysql Slave：

?? mysql>change master?to master_host='192.168.209.19',master_user='test',master_password='123456',master_log_file='mysql-bin.000007',master_log_pos=320;?? #320為主服務器的position，無單引號。

?? Mysql>start slave;??? //啟動從服務器復制功能

8、檢查slave狀態(tài)：

mysql> show slave status\G

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

?????????????? Slave_IO_State: Waiting for master to send event

????????????????? Master_Host: 192.168.209.19

????????????????? Master_User: mysync

????????????????? Master_Port: 3306

??????????????? Connect_Retry: 60

????????????? Master_Log_File: mysql-bin.000007

????????? Read_Master_Log_Pos: 320

?????????????? Relay_Log_File: cdn20-relay-bin.000002

??????????????? Relay_Log_Pos: 283

??????? Relay_Master_Log_File: mysql-bin.000007

???????????? 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: 320

????????????? Relay_Log_Space: 456

????????????? 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: 20

????????????????? Master_UUID: 6a36aa69-1c81-11e4-8213-b8ca3af2484f

???????????? Master_Info_File: /mysql/mysql-5.6/data/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)

Slave_IO及Slave_SQL進程YES狀態(tài)，否則都是錯誤的狀態(tài)(如：其中一個NO均屬錯誤)。

至此，主從服務器配置完成。

9、主從服務器測試：

主服務器Mysql，建立數(shù)據(jù)庫，并在這個庫中建表插入一條數(shù)據(jù)：

mysql> create database test1;

Query OK, 1 row affected (0.00 sec)

mysql> use test1

Database changed

mysql> create table test1(id int(4),name char(8));

Query OK, 0 rows affected (0.01 sec)

mysql> insert into test values(001,'test1');

ERROR 1146 (42S02): Table 'test1.test' doesn't exist

mysql> insert into test1 values(001,'test1');

Query OK, 1 row affected (0.00 sec)

mysql> show databases;

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

| Database?????????? |

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

| information_schema |

| mysql????????????? |

| performance_schema |

| test?????????????? |

| test1????????????? |

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

5 rows in set (0.00 sec)

從服務器Mysql查詢：

mysql> show databases;

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

| Database?????????? |

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

| information_schema |

| mysql????????????? |

| performance_schema |

| test?????????????? |

| test1????????????? |

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

5 rows in set (0.01 sec)

至此，mysql主從配置完成，可以正常使用；后續(xù)會加入集群模式。

10、nagios mysql slave 監(jiān)控

因為網(wǎng)上沒完整的mysql集群監(jiān)控插件，寫個簡單的腳本監(jiān)控mysql主從，只需要傳入幾個簡單參數(shù)即可實現(xiàn)，腳本如下：

[root@host1 objects]# cat /usr/local/nagios/libexec/check_mysql_slave.sh

#!/bin/bash

host=$1

mysqluser=$2

mysqlpasswd=$3

mysqlport=$4

Slave_Yes=`mysql -h $host -u$mysqluser -p$mysqlpasswd -P $4 -e 'show slave status\G' | grep -c Yes`

??????? if [ $Slave_Yes -eq 2 ];then

??????????????? echo "Mysql slave is OK!"

??????? exit 0;

??????? else

??????? echo "Mysql slave is Error!";

??????? exit 2;

??????? fi

定義command.cfg

#check_mysql_slave

define command{

??????? command_name check_mysql_slave

??????? command_line $USER1$/check_mysql_slave.sh $HOSTADDRESS$ $USER7$ $USER8$ $USER9$

}

定義主機配置

define service{

??????? use???????????????????????????? local-service???????? ; Name of service template to use

??????? host_name?????????????????????? hostname

??????? service_description???????????? MySQL_AB

??????? check_command?????????????????? check_mysql_slave

??????? notifications_enabled?????????? 0

??????? }

同時，需要將mysqluser，mysqlpasswd，mysqlport都寫入到resource.cfg文件中

/usr/local/nagios/etc/resource.cfg

$USER7$=root

$USER8$=passwd

$USER9$=3306

配置完成之后，reload一下nagios配置即可。

具體監(jiān)控如下：

=================MySQL 主主=================

MySQL主主復制，兩臺服務器的任何一臺上面的數(shù)據(jù)庫存發(fā)生了改變都會同步到另一臺服務器上，兩臺服務器互為主從，并且都能向外提供服務。

詳情如下：

server1:192.168.203.10

server2:192.168.203.20

OS:CentOS release 6.3 (Final) 64bit

mysql版本：mysql-5.6.13

一、創(chuàng)建并授權mysql用戶

這一步在每一臺（主）服務器上創(chuàng)建一個用戶，并為之授權，使它們可以互相訪問彼此的數(shù)據(jù)庫

server1

創(chuàng)建允許server2來訪問的用戶test2,密碼為：123456

mysql> GRANT REPLICATION SLAVE ON *.* TO 'test2'@'192.168.203.20' ?IDENTIFIED BY '123456';

server2

創(chuàng)建一個允許server1來訪問的用戶test1,密碼為：123456

mysql> GRANT REPLICATION SLAVE ON *.*? TO 'test1'@'192.168.203.10' ?IDENTIFIED BY '123456';

二、修改MySQL配置文件

MySQL的配置文件中修改/etc/my.cnf：

server1如下：

?[mysqld]

?server-id = 10

?log-bin = mysql-bin

?replicate-do-db = mysqldb

?auto-increment-increment = 2

?auto-increment-offset = 1

# service mysqld restart

server2如下：

?[mysqld]

?server-id = 20

?log-bin = mysql-bin

?replicate-do-db = mysqldb

?auto-increment-increment = 2

?auto-increment-offset = 2?

# service mysqld restart

參數(shù)解釋：

　　兩個配置文件只有server-id不同和auto-increment-offset不同

　　auto-increment-offset是用來設定數(shù)據(jù)庫中自動增長的起點的，因為服務器都設定了一次自動增長值2，所以它們的起點必須得不同，這樣才能避免兩臺服務器數(shù)據(jù)同步時出現(xiàn)主鍵沖突

　　replicate-do-db?指定同步的數(shù)據(jù)庫，mysqldb數(shù)據(jù)庫

　　auto-increment-increment的值應設為整個結構中服務器的總數(shù)，此實驗為兩臺服務器，所以值設為2

三、查詢數(shù)據(jù)庫的二進制日志和pos

　　主主模式，測試的話，可以先做一個數(shù)據(jù)庫，然后，讓第二個數(shù)據(jù)庫來將數(shù)據(jù)自動同步，故不需要備份數(shù)據(jù)或者是導出導入數(shù)據(jù)。?

server1數(shù)據(jù)庫

mysql> show master status;

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

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

| mysql-bin.000006 |??? 11230 |????????????? |????????????????? |?????????????????? |

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

1 row in set (0.00 sec)

server2數(shù)據(jù)庫

mysql> show master status;

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

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

| mysql-bin.000007 |??? 10426 |????????????? |????????????????? |?????????????????? |

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

1 row in set (0.00 sec)

五、說明二進制日志路徑

server1：

# mysql> change master to master_host='192.168.203.20',master_user='test2',master_password='123456',master_log_file='mysql-bin.000007',master_log_pos=10426;? ?

server2：

# mysql>change master to master_host='192.168.203.10',master_user='test2',master_password='123456',master_log_file='mysql-bin.000006',master_log_pos=11230;

六、啟動復制（Replication）功能

在兩臺數(shù)據(jù)庫上分別執(zhí)行

# mysql> START SLAVE;

至此配置完成！

七、測試：

在任意一臺服務器上創(chuàng)建一個數(shù)據(jù)庫或者修改數(shù)據(jù)，對應的在另一臺服務器上查看數(shù)據(jù)庫數(shù)據(jù)。

轉載于:https://www.cnblogs.com/krainbow/p/3894154.html

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