1.???環(huán)境說明：

機器名

eth0

說明

server01

192.168.100.30/24

Mysql、keepalive

server02

192.168.100.31/24

Mysql、keepalive

2.???安裝mysql

去官網(wǎng)下載mysql5.5的安裝包，源碼安裝比較麻煩所以忽略

MySQL-client-5.5.29-1.el6.x86_64.rpm? MySQL-server-5.5.29-1.el6.x86_64.rpm MySQL-devel-5.5.29-2.el6.x86_64.rpm

出現(xiàn)錯誤提示：

[root@server01 ~]# rpm -ivhMySQL-server-5.5.29-1.el6.x86_64.rpm

Preparing...???????????????########################################### [100%]

file /usr/share/mysql/charsets/Index.xml from install ofMySQL-server-5.5.29-1.el6.x86_64 conflicts with file from packagemysql-libs-5.1.61-4.el6.x86_64

這個是因為安裝了5.1的工具包的問題卸載加參數(shù)-nodeps不檢查依賴

[root@server01 ~]# rpm -e --nodepsmysql-libs

[root@server01 ~]# rpm -ivh ?MySQL-server-5.5.29-1.el6.x86_64.rpm

[root@server01 ~]# rpm -ivh ?MySQL-client-5.5.29-1.el6.x86_64.rpm

3.???配置mysql

查看mysql安裝路徑

[root@server01 mysql]# whereis mysql

mysql: /usr/bin/mysql /usr/lib64/mysql/usr/share/mysql /usr/share/man/man1/mysql.1.gz

創(chuàng)建配置文件夾可以直接放在/etc目錄下

[root@server01mysql]# cp my-medium.cnf? /etc/

[root@server01 mysql]# mv my-medium.cnfmy.cnf

[root@server01 mysql]# chown? mysql:mysql /etc/my.conf

配置my.cnf

master.cnf:

[mysqld]

server-id=1

log-bin=server01.log

relay-log-index=slave-relay-bin.index #配置雙主模式所以服務器都要配置從的relay-log

relay-log=slave-relay-bin

innodb_flush_log_at_trx_commit=1

sync_binlog=1

注意：為了使用事務的InnoDB在復制中最大的持久性和一致性，你應該指定innodb_flush_log_at_trx_commit=1,sync_binlog=1 選項。

需要在從機的slave.cnf文件的【mysqld】部分增加server-id選項。server-id的值類似主機，必須是 1到2 的32次方之間的一個正整數(shù)，而且必須和主機的ID不一樣。如果你設置多臺從機，那么每臺必須有別于主機和其他從機的唯一的server-id值?？梢园裺erver-id值認為是類似IP地址的東西：這些ID在復制服務器通信的時候標識了每臺唯一的服務器實例。

slave.cnf:

[mysqld]

server-id=2

log-bin=server02-bin.log

relay-log-index=slave-relay-bin.index

relay-log=slave-relay-bin

innodb_flush_log_at_trx_commit=1

sync_binlog=1

設置mysql自啟動

[root@server01 mysql]# chkconfig? mysql on

[root@server01 etc]# service? mysql start

[root@server01 ~]# mysqladmin -urootpassword password

4.????創(chuàng)建復制賬戶

[root@server01 ~]# mysql –uroot

mysql> create userrepl_user@192.168.100.31;

mysql> grant replication slave on *.* torepl_user@192.168.100.31 identified by 'password';

鎖住主機，禁止用戶寫入mysql

mysql> flush tables with read lock;

Query OK, 0 rows affected (0.00 sec)

不改變mysql用戶，復制test測試同步庫

mysqldump -urrot -password test >test.sql

從機啟動會解鎖

mysql> unlock tables;

Query OK, 0 rows affected (0.00 sec

拷貝test.sql到從機

從機執(zhí)行

mysql -uroot -ppassword test < test.sql

回到主機查看當前日志偏差值

mysql> show master status;

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

| File??????????????? | Position | Binlog_Do_DB | Binlog_Ignore_DB|

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

| server01-bin.000003 |???? 4921 |????????????? |????????????????? |

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

1 row in set (0.00 sec)

在從機上初始化復制了。在從機上執(zhí)行以下命令

mysql> slave stop;

Query OK, 0 rows affected, 1 warning (0.00sec)

mysql> change master toMASTER_HOST='192.168.100.30',

-> MASTER_USER='repl_user',

-> MASTER_PASSWORD='password',

-> MASTER_LOG_FILE='server01-bin.000003',

-> MASTER_LOG_POS= 2877;

Query OK, 0 rows affected (0.03 sec)

mysql> slave start;

Query OK, 0 rows affected (0.00 sec)

查看狀態(tài)

mysql> show slave status\G

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

Slave_IO_State: Waiting formaster to send event

Master_Host: 192.168.100.30

Master_User: repl_user

Master_Port: 3306

Connect_Retry: 60

Master_Log_File:server01-bin.000003

Read_Master_Log_Pos: 4921

Relay_Log_File:slave-relay-bin.000002

Relay_Log_Pos: 256

Relay_Master_Log_File: server01-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: 4921

Relay_Log_Space: 412

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

1 row in set (0.00 sec)

5.????驗證從機復制特性

主機數(shù)據(jù)庫內(nèi)容如下：

mysql> use test

Database changed

mysql> select * from new

-> ;

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

| id | col1 | col2 |

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

|? 1| hah? | test |

|? 2| s??? | b??? |

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

2 rows in set (0.00 sec)

從機數(shù)據(jù)庫內(nèi)容：

Database changed

mysql> select * from new;

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

| id | col1 | col2 |

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

|? 1| hah? | test |

|? 2| s??? | b??? |

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

2 rows in set (0.02 sec)

回到主機修改數(shù)據(jù):

mysql> update new setcol1='haha',col2='change' where id='1';

Query OK, 1 row affected (0.04 sec)

Rows matched: 1? Changed: 1?Warnings: 0

mysql> select * from new

-> ;

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

| id | col1 | col2?? |

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

|? 1| haha | change |

|? 2| s??? | b????? |

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

2 rows in set (0.00 sec)

查看從機是否修改：

mysql> select * from new;

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

| id | col1 | col2?? |

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

|? 1| haha | change |

|? 2| s??? | b????? |

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

2 rows in set (0.00 sec)

觀察得出從機已經(jīng)從主機同步到了數(shù)據(jù)。

6.???主主模式配置

現(xiàn)在的設置為192.168.100.30為主機，192.168.100.31為從機，

按照上述設置再將192.168.100.31設為主機，192.168.100.30設為從機。

設置完成后兩臺機器既相互為主機也相互為備機，都可以寫入數(shù)據(jù)并同步到對方機器。

7.????安裝keepalived(兩臺均安裝)

安裝依賴包

[root@server01 ~]# yum install -y gcc gcc+gcc-c++ openssl openssl-devel popt-devel

下載

[root@server01 ~]# wgethttp://www.keepalived.org/software/keepalived-1.2.7.tar.gz

[root@server01 ~]# tar -xzf? keepalived-1.2.7.tar.gz

[root@server01 ~]#./configure? --prefix=/usr/local/keeplived

[root@server01 ~]# make

[root@server01 ~]# make install

[root@server01 ~]# cp/usr/local/keeplived/sbin/keepalived?/usr/bin/

[root@server01 ~]# cp /usr/local/keeplived/etc/sysconfig/keepalived? /etc/sysconfig/

[root@server01 ~]# cp/usr/local/keeplived/etc/rc.d/init.d/keepalived?/etc/init.d/

[root@server01 ~]# mkdir /etc/keepalived

創(chuàng)建 vi keepalived.conf如下內(nèi)容

! Configuration File for keepalived

global_defs {

notification_email {

cmwu@biencloud.com

}

notification_email_from haha@biencloud.com

smtp_server 127.0.0.1

router_id LVS_DEVEL

}

vrrp_instance VI_1 {

state BACKUP

interface eth0

virtual_router_id 50

priority 100

advert_int 1

nopreempt

authentication {

auth_type PASS

auth_pass 1111

}

virtual_ipaddress {

192.168.100.40

}

}

192.168.100.31上的配置文件為

global_defs {

notification_email {

cmwu@biencloud.com

}

notification_email_from haha@biencloud.com

smtp_server 127.0.0.1

smtp_connect_timeout 30

router_id LVS_DEVEL

}

vrrp_instance VI_1 {

state BACKUP

interface eth0

virtual_router_id 50

priority 90

advert_int 1

authentication {

auth_type PASS

auth_pass 1111

}

virtual_ipaddress {

192.168.100.40

}

}

[root@server01 ~]# ping 192.168.100.40

PING 192.168.100.40 (192.168.100.40) 56(84)bytes of data.

64 bytes from 192.168.100.40: icmp_seq=1ttl=64 time=0.262 ms

[root@server02 ~]# ping 192.168.100.40

PING 192.168.100.40 (192.168.100.40) 56(84)bytes of data.

64 bytes from 192.168.100.40: icmp_seq=1ttl=64 time=0.064 ms

兩臺服務器均可以ping通服務器。

Ip addr可以看到虛擬IP已經(jīng)綁定到網(wǎng)卡上了

總結(jié)

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