mysql启用keepalive_keepalive+mysql 主主配置
1.???環境說明：
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-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，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。可以把server-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
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
主機數據庫內容如下：
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)
從機數據庫內容：
Database changed
mysql> select * from new;
+----+------+------+
| id | col1 | col2 |
+----+------+------+
|? 1| hah? | test |
|? 2| s??? | b??? |
+----+------+------+
2 rows in set (0.02 sec)
回到主機修改數據:
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)
觀察得出從機已經從主機同步到了數據。
6.???主主模式配置
現在的設置為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，都可以寫入數據并同步到對方機器。
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
創建 vi keepalived.conf如下內容
! 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已經綁定到網卡上了
總結
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