标签:names relay_log com copyright 图片 pass nbsp section sbin
(1)获取管理脚本master_ip_failover
提示:yum安装的manager是没有这个脚本的。
我们需要从manager的源码包里复制一个。
[root@mysql-db03 ~]# ll mha4mysql-manager-0.56.tar.gz
-rw-r--r--. 1 root root 113914 Sep 4 18:43 mha4mysql-manager-0.56.tar.gz
[root@mysql-db03 ~]# tar xf mha4mysql-manager-0.56.tar.gz
[root@mysql-db03 ~]# cd mha4mysql-manager-0.56
[root@mysql-db03 mha4mysql-manager-0.56]# cd samples/scripts/
[root@mysql-db03 scripts]# ll
total 32
-rwxr-xr-x. 1 4984 users 3648 Mar 31 2014 master_ip_failover #这就是管理虚拟IP的脚本
-rwxr-xr-x. 1 4984 users 9870 Mar 31 2014 master_ip_online_change
-rwxr-xr-x. 1 4984 users 11867 Mar 31 2014 power_manager
-rwxr-xr-x. 1 4984 users 1360 Mar 31 2014 send_report
[root@mysql-db03 scripts]# cp master_ip_failover /usr/local/bin/ #复制到/usr/local/bin目录下
[root@mysql-db03 scripts]# which master_ip_failover
/usr/local/bin/master_ip_failover
(2)修改mha配置文件
[root@mysql-db03 scripts]# vim /etc/mha/mha1.cnf
[root@mysql-db03 scripts]# cat /etc/mha/mha1.cnf
[server default]
manager_log=/var/log/mha/mha1/manager
manager_workdir=/var/log/mha/mha1
master_binlog_dir=/usr/local/mysql/data
master_ip_failover_script=/usr/local/bin/master_ip_failover #添加脚本位置
password=666666
ping_interval=2
repl_password=666666
repl_user=rep
ssh_user=root
user=mha
#candidate_master=1 #留着备用的注释项
#check_repl_delay=0 #留着备用的注释项
[server1]
hostname=192.168.200.20
port=3306
[server2]
hostname=192.168.200.28
port=3306
[server3]
hostname=192.168.200.29
port=3306
(3)修改源程序自带VIP漂移脚本
#在下边的脚本里添加如下4行代码:
[root@mysql-db03 scripts]# sed -n ‘34,37p‘ /usr/local/bin/master_ip_failover
my $vip = ‘192.168.0.60/24‘; #定义VIP my $key = ‘0‘; #定义网卡后缀数值,如果eth0就是0,eth1就是1
my $ssh_start_vip = "/sbin/ifconfig eth0:$key $vip"; #绑定VIP的命令 my $ssh_stop_vip = "/sbin/ifconfig eth0:$key down"; #关闭VIP的命令
(4)重启动mha管理端
[root@mysql-db03 ~]# ps -ef | grep mha | grep -v grep #查看mha进程
root 14138 13211 0 19:22 pts/3 00:00:00 perl /usr/bin/masterha_manager --conf=/etc/mha/mha1.cnf --remove_dead_master_conf --ignore_last_failover
[root@mysql-db03 ~]# pkill perl #杀掉perl进程
[1]+ Exit 1 nohup masterha_manager --conf=/etc/mha/mha1.cnf --remove_dead_master_conf --ignore_last_failover < /dev/null > /var/log/mha/mha1/manager.log 2>&1
[root@mysql-db03 ~]# ps -ef | grep mha | grep -v grep #查看mha进程
[root@mysql-db03 ~]# nohup masterha_manager --conf=/etc/mha/mha1.cnf --remove_dead_master_conf --ignore_last_failover < /dev/null > #启动mha进程 /var/log/mha/mha1/manager.log 2>&1 &
(1)查看mysql-db01网络状态
(2)停掉mysql-db01的MySQL数据库服务
[root@localhost ~]# /etc/init.d/mysqld stop
Shutting down MySQL....... SUCCESS!
[root@localhost ~]# ifconfig #VIP没了
eth0 Link encap:Ethernet HWaddr 00:0C:29:E0:9C:4A
inet addr:192.168.200.20 Bcast:192.168.200.255 Mask:255.255.255.0
inet6 addr: fe80::20c:29ff:fee0:9c4a/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:249568 errors:0 dropped:0 overruns:0 frame:0
TX packets:22184 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:337973697 (322.3 MiB) TX bytes:3172031 (3.0 MiB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:66 errors:0 dropped:0 overruns:0 frame:0
TX packets:66 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:10106 (9.8 KiB) TX bytes:10106 (9.8 KiB)
(3)查看mysql-db02
(4)查看mysql-db03的主从同步情况
(5)mysql-db01故障恢复
[root@localhost ~]# /etc/init.d/mysqld start
Starting MySQL........ SUCCESS!
[root@localhost ~]# mysql -uroot -p666666
Warning: Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 1
Server version: 5.6.17-log MySQL Community Server (GPL)
Copyright (c) 2000, 2014, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type ‘help;‘ or ‘\h‘ for help. Type ‘\c‘ to clear the current input statement.
mysql> CHANGE MASTER TO MASTER_HOST=‘192.168.200.28‘, MASTER_PORT=3306, MASTER_AUTO_POSITION=1, MASTER_USER=‘rep‘, MASTER_PASSWORD=‘666666‘;
Query OK, 0 rows affected, 2 warnings (0.11 sec)
mysql> start slave;
Query OK, 0 rows affected, 1 warning (0.13 sec)
mysql> show slave status\G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.200.28
Master_User: rep
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000006
Read_Master_Log_Pos: 231
Relay_Log_File: localhost-relay-bin.000002
Relay_Log_Pos: 361
Relay_Master_Log_File: mysql-bin.000006
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
...一下省略...
(6)补上缺失的mha配置文件
[root@localhost ~]# cat /etc/mha/mha1.cnf
[server default]
manager_log=/var/log/mha/mha1/manager
manager_workdir=/var/log/mha/mha1
master_binlog_dir=/usr/local/mysql/data
master_ip_failover_script=/usr/local/bin/master_ip_failover
password=666666
ping_interval=2
repl_password=666666
repl_user=rep
ssh_user=root
user=mha
[server1]
hostname=192.168.200.20
port=3306
[server2]
hostname=192.168.200.28
port=3306
[server3]
hostname=192.168.200.29
port=3306
(7)启动mha管理进程
[root@localhost ~]# ps -ef | grep mha | grep -v grep
[root@localhost ~]# nohup masterha_manager --conf=/etc/mha/mha1.cnf --remove_dead_master_conf --ignore_last_failover < /dev/null > /var/log/mha/mha1/manager.log 2>&1 &
[1] 7382
[root@localhost ~]# ps -ef | grep mha | grep -v grep
root 7382 5389 1 03:14 pts/0 00:00:00 perl /usr/bin/masterha_manager --conf=/etc/mha/mha1.cnf --remove_dead_master_conf --ignore_last_failover
主库宕机,也许会造成主库binlog复制不及时而导致数据丢失的情况出现,因此配置binlog-server进行时时同步备份,是必要的一种安全手段。
[root@localhost ~]# vim /etc/mha/mha1.cnf
[root@localhost ~]# cat /etc/mha/mha1.cnf
[server default]
manager_log=/var/log/mha/mha1/manager
manager_workdir=/var/log/mha/mha1
master_binlog_dir=/usr/local/mysql/data #全局的binlog存放位置
master_ip_failover_script=/usr/local/bin/master_ip_failover
password=666666
ping_interval=2
repl_password=666666
repl_user=rep
ssh_user=root
user=mha
[server1]
hostname=192.168.200.20
port=3306
[server2]
hostname=192.168.200.28
port=3306
[server3]
hostname=192.168.200.29
port=3306
[binlog1] #添加binlog模块
no_master=1 #不允许切换为主
hostname=192.168.200.29 #存放IP
master_binlog_dir=/data/mysql/binlog/ #binlog存放位置优先级比全局的高
[root@localhost ~]# mkdir -p /data/mysql/binlog #创建存放目录
[root@localhost ~]# cd /data/mysql/binlog #进入存放目录
[root@localhost binlog]# ll
total 0
[root@localhost binlog]# which mysqlbinlog
/usr/local/bin/mysqlbinlog
[root@localhost binlog]# mysqlbinlog -R --host=192.168.200.60 --user=mha --password=666666 --raw --stop-never mysql-bin.000001 & #拉取主库binlog,这里的IP是VIP的
[2] 8133
[root@localhost binlog]# Warning: Using a password on the command line interface can be insecure.
[root@localhost binlog]# ll
total 24
-rw-r--r--. 1 root root 143 Nov 25 03:37 mysql-bin.000001
-rw-r--r--. 1 root root 174 Nov 25 03:37 mysql-bin.000002
-rw-r--r--. 1 root root 685 Nov 25 03:37 mysql-bin.000003
-rw-r--r--. 1 root root 254 Nov 25 03:37 mysql-bin.000004
-rw-r--r--. 1 root root 254 Nov 25 03:37 mysql-bin.000005
-rw-r--r--. 1 root root 120 Nov 25 03:37 mysql-bin.000006
[root@localhost binlog]# ps -ef | grep mysqlbinlog | grep -v grep
root 8133 5389 0 03:37 pts/0 00:00:00 mysqlbinlog -R --host=192.168.200.60 --user=mha --password=x xxxx --raw --stop-never mysql-bin.000001
[root@localhost binlog]# nohup masterha_manager --conf=/etc/mha/mha1.cnf --remove_dead_master_conf --ignore_last_failover < /dev/null > /var/log/mha/mha1/manager.log 2>&1 &
[root@localhost binlog]# ps -ef | grep mysqlbinlog | grep -v grep
root 8133 5389 0 03:37 pts/0 00:00:00 mysqlbinlog -R --host=192.168.200.60 --user=mha --password=x xxxx --raw --stop-never mysql-bin.000001 #binlog进程在
[root@localhost binlog]# ps -ef | grep perl | grep -v grep
root 7382 5389 0 03:14 pts/0 00:00:01 perl /usr/bin/masterha_manager --conf=/etc/mha/mha1.cnf --remove_dead_master_conf --ignore_last_failover #mha进程在
标签:names relay_log com copyright 图片 pass nbsp section sbin
原文地址:https://www.cnblogs.com/fengdou/p/10014906.html