mysql高可用方案之MMM

環(huán)境規(guī)劃： 主db1 IP:192.168.1.247 host:tong1 主db2 IP:192.168.1.248 host:tong2 從db3 IP:192.168.1.249 host:tong3 monitor IP:192.168.1.249 host:tong3 數(shù)據(jù)庫:mysql-5.6.21 mysqldba技術(shù)群 378190849 武漢-linux運(yùn)維群 236415619 1.網(wǎng)絡(luò)環(huán)境布置 ton

環(huán)境規(guī)劃：

主db1 IP:192.168.1.247 host:tong1

主db2 IP:192.168.1.248 host:tong2

從db3 IP:192.168.1.249 host:tong3

monitor IP:192.168.1.249 host:tong3

數(shù)據(jù)庫:mysql-5.6.21

mysql dba技術(shù)群 378190849

武漢-linux運(yùn)維群 236415619

1.網(wǎng)絡(luò)環(huán)境布置

tong1數(shù)據(jù)節(jié)點(diǎn):

[root@tong1 ~]# ifconfig eth0
eth0 Link encap:Ethernet HWaddr 10:78:D2:C7:83:03
inet addr:192.168.1.247 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::1278:d2ff:fec7:8303/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:4953337 errors:0 dropped:0 overruns:0 frame:0
TX packets:78512 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:346785301 (330.7 MiB) TX bytes:5389268 (5.1 MiB)

[root@tong1 ~]# cat /etc/hosts
192.168.1.247 tong1
192.168.1.248 tong2
192.168.1.249 tong3

[root@tong1 ~]#

tong2數(shù)據(jù)節(jié)點(diǎn):

[root@tong2 ~]# ifconfig eth0
eth0 Link encap:Ethernet HWaddr 10:78:D2:C7:17:E8
inet addr:192.168.1.248 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::1278:d2ff:fec7:17e8/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:4930658 errors:0 dropped:0 overruns:0 frame:0
TX packets:19441 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:315661835 (301.0 MiB) TX bytes:2133138 (2.0 MiB)

[root@tong2 ~]# cat /etc/hosts
192.168.1.247 tong1
192.168.1.248 tong2
192.168.1.249 tong3

[root@tong2 ~]#

tong3監(jiān)控節(jié)點(diǎn):

[root@tong3 ~]# ifconfig eth0
eth0 Link encap:Ethernet HWaddr 10:78:D2:C8:F7:50
inet addr:192.168.1.249 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::1278:d2ff:fec8:f750/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:6864426 errors:0 dropped:0 overruns:0 frame:0
TX packets:99046 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:694563286 (662.3 MiB) TX bytes:7322797 (6.9 MiB)

[root@tong3 ~]# cat /etc/hosts
192.168.1.247 tong1
192.168.1.248 tong2
192.168.1.249 tong3
[root@tong3 ~]#

2.在監(jiān)控節(jié)點(diǎn)上tong3安裝mysql-mmm軟件

下載地址:http://mysql-mmm.org/downloads

[root@tong3 ~]# tar xvf mysql-mmm-2.2.1.tar.gz
[root@tong3 ~]# cd mysql-mmm-2.2.1
[root@tong3 mysql-mmm-2.2.1]# make && make install

[root@tong3 mysql-mmm-2.2.1]# mmm_
mmm_agentd mmm_backup mmm_clone mmm_control mmm_mond mmm_restore
[root@tong3 mysql-mmm-2.2.1]# ll /etc/mysql-mmm/
total 16
-rw-r-----. 1 root root 33 Apr 29 14:06 mmm_agent.conf
-rw-r-----. 1 root root 684 Apr 29 14:06 mmm_common.conf
-rw-r-----. 1 root root 321 Apr 29 14:06 mmm_mon.conf
-rw-r-----. 1 root root 1293 Apr 29 14:06 mmm_tools.conf
[root@tong3 mysql-mmm-2.2.1]#

3.在tong1,tong2,tong3節(jié)點(diǎn)安裝mysql數(shù)據(jù)庫(步驟一樣)

[root@tong1 ~]# wget http://mirrors.sohu.com/mysql/MySQL-5.6/mysql-5.6.23-linux-glibc2.5-x86_64.tar.gz

[root@tong1 ~]# tar xvf mysql-5.6.23-linux-glibc2.5-x86_64.tar.gz -C /usr/local/

[root@tong1 ~]# cd /usr/local/

[root@tong1 ~]# mv mysql-5.6.23-linux-glibc2.5-x86_64/ mysql-5.6.23

[root@tong1 ~]# cd mysql-5.6.23/

[root@tong1 ~]# ./scripts/mysql_install_db --user=mysql --group=mysql --basedir=/usr/local/mysql-5.6.23 --datadir=/usr/local/mysql-5.6.23/data

[root@tong1 ~]# cp -a my.cnf /etc/

[root@tong1 ~]# cp -a support-files/mysql.server /etc/init.d/mysqld

[root@tong1 ~]# chkconfig --add mysqld

[root@tong1 ~]# chkconfig mysqld on

[root@tong1 ~]# vim /etc/my.cnf

basedir = /usr/local/mysql-5.6.23
datadir = /usr/local/mysql-5.6.23/data
port = 3306
server_id = 20 --server_id在三臺(tái)主機(jī)不同,分別用10,20,30表示
socket = /tmp/mysql.sock

[root@tong1 ~]# pkill mysqld

[root@tong1 ~]# /etc/init.d/mysqld restart

[root@tong1 ~]# /usr/local/mysql-5.6.23/bin/mysqladmin -u root password 'system'

[root@tong1 ~]# /usr/local/mysql-5.6.23/bin/mysql -u root -p --輸入密碼system
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 5
Server version: 5.6.23 MySQL Community Server (GPL)

Copyright (c) 2000, 2015, 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> exit
Bye
[root@tong1 ~]#

4.將tong1和tong2配置成主主架構(gòu)

tong1節(jié)點(diǎn)配置文件:

[root@tong1 ~]# vim /etc/my.cnf

basedir = /usr/local/mysql-5.6.23
datadir = /usr/local/mysql-5.6.23/data
port = 3306
server_id = 20
socket = /tmp/mysql.sock

replicate-do-db=tong --復(fù)制tong數(shù)據(jù)庫
replicate-ignore-db=mysql --忽略mysql數(shù)據(jù)庫

log-bin=mysql-bin --開啟二進(jìn)制日志
log-bin-index=mysql-bin-index

auto_increment_offset=1
auto_increment_increment=2

relay-log=relay-log --開啟中繼日志
relay-log-index=relay-log-index

log_slave_updates --當(dāng)任意一臺(tái)主宕機(jī),從可以接管主應(yīng)用
sync-binlog=1

[root@tong1 ~]#

tong2節(jié)點(diǎn)配置文件:

[root@tong2 ~]# vim /etc/my.cnf

basedir = /usr/local/mysql-5.6.23
datadir = /usr/local/mysql-5.6.23/data
port = 3306
server_id = 10
socket = /tmp/mysql.sock

replicate-do-db=tong
replicate-ignore-db=mysql

log-bin=mysql-bin
log-bin-index=mysql-bin-index

auto_increment_offset=2
auto_increment_increment=2

relay-log=relay-log
relay-log-index=relay-log-index

log_slave_updates
sync-binlog=1

[root@tong2 ~]#

tong3節(jié)點(diǎn)配置文件:

[root@tong3 ~]# vim /etc/my.cnf

basedir = /usr/local/mysql-5.6.23
datadir = /usr/local/mysql-5.6.23/data
port = 3306
server_id = 30
socket = /tmp/mysql.sock

replicate-do-db=tong
replicate-ignore-db=mysql

[root@tong3 ~]#

配置主主模式:

tong1節(jié)點(diǎn):

[root@tong1 ~]# /etc/init.d/mysqld restart
Shutting down MySQL.... SUCCESS!
Starting MySQL. SUCCESS!
[root@tong1 ~]# mysql -u root -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.6.23-log MySQL Community Server (GPL)

Copyright (c) 2000, 2015, 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> grant replication slave,replication client on *.* to repl_user@'192.168.1.%' identified by 'system!#%246'; --創(chuàng)建復(fù)制用戶

Query OK, 0 rows affected (0.00 sec)

mysql> show master status;
+------------------+----------+--------------+------------------+-------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+------------------+----------+--------------+------------------+-------------------+
| mysql-bin.000001 | 120 | | | |
+------------------+----------+--------------+------------------+-------------------+
1 row in set (0.00 sec)

mysql>

tong2節(jié)點(diǎn):

[root@tong2 ~]# mysql -u root -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.6.23-log MySQL Community Server (GPL)

Copyright (c) 2000, 2015, 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> grant replication slave,replication client on *.* to repl_user@'192.168.1.%' identified by 'system!#%246';

Query OK, 0 rows affected (0.00 sec)

mysql> show master status;
+------------------+----------+--------------+------------------+-------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+------------------+----------+--------------+------------------+-------------------+
| mysql-bin.000001 | 120 | | | |
+------------------+----------+--------------+------------------+-------------------+
1 row in set (0.00 sec)

mysql> change master to master_host='192.168.1.247',master_port=3306,master_user='repl_user',master_password='system!#%246',master_log_file='mysql-bin.000001',master_log_pos=120; --復(fù)制tong1中的數(shù)據(jù)
Query OK, 0 rows affected, 2 warnings (0.50 sec)

mysql> start slave; --開啟從服務(wù)
Query OK, 0 rows affected (0.05 sec)

mysql>

tong1節(jié)點(diǎn):

mysql> change master to master_host='192.168.1.248',master_port=3306,master_user='repl_user',master_password='system!#%246',master_log_file='mysql-bin.000001',master_log_pos=120; --復(fù)制tong2中的數(shù)據(jù)
Query OK, 0 rows affected, 2 warnings (0.22 sec)

mysql> start slave;
Query OK, 0 rows affected (0.05 sec)

mysql> show slave status\G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.1.248
Master_User: repl_user
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000001
Read_Master_Log_Pos: 120
Relay_Log_File: relay-log.000002
Relay_Log_Pos: 283
Relay_Master_Log_File: mysql-bin.000001
Slave_IO_Running: Yes --主主同步成功
Slave_SQL_Running: Yes
Replicate_Do_DB: tong
Replicate_Ignore_DB: mysql
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: 450
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: 10
Master_UUID: de5d22d1-ed4b-11e4-9390-1078d2c717e8
Master_Info_File: /usr/local/mysql-5.6.23/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)

mysql>

5.測(cè)試主主架構(gòu)是否生效

tong1節(jié)點(diǎn):

mysql> create table a(a int);
Query OK, 0 rows affected (0.39 sec)

mysql> insert into a values(1);
Query OK, 1 row affected (0.03 sec)

mysql> select * from a;
+------+
| a |
+------+
| 1 |
+------+
1 row in set (0.00 sec)

mysql>

tong2節(jié)點(diǎn):

mysql> \u tong
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A

Database changed
mysql> select * from a;
+------+
| a |
+------+
| 1 |
+------+
1 row in set (0.00 sec)

mysql> insert into a values(2);
Query OK, 1 row affected (0.03 sec)

mysql> select * from a;
+------+
| a |
+------+
| 1 |
| 2 |
+------+
2 rows in set (0.00 sec)

mysql>

6.將tong3設(shè)置成tong1節(jié)點(diǎn)的從機(jī)

[root@tong3 ~]# /etc/init.d/mysqld restart

Shutting down MySQL.. SUCCESS!
Starting MySQL. SUCCESS!
[root@tong3 ~]# mysql -u root -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 16
Server version: 5.6.23 MySQL Community Server (GPL)

Copyright (c) 2000, 2015, 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='192.168.1.247',master_port=3306,master_user='repl_user',master_password='system!#%246',master_log_file='mysql-bin.000001',master_log_pos=120; --復(fù)制tong1中的數(shù)據(jù)
Query OK, 0 rows affected, 2 warnings (0.27 sec)

mysql> start slave;
Query OK, 0 rows affected (0.07 sec)

mysql> \u tong
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A

Database changed
mysql> select * from a; --數(shù)據(jù)已同步
+------+
| a |
+------+
| 1 |
| 2 |
+------+
2 rows in set (0.00 sec)

mysql>

7.在三個(gè)數(shù)據(jù)庫節(jié)點(diǎn)分別創(chuàng)建監(jiān)控用戶和代理用戶

mysql> grant replication client on *.* to 'mmm_moniton'@'192.168.1.%' identified by 'moniton';
Query OK, 0 rows affected (0.00 sec)

mysql> grant super,replication client,process on *.* to 'mmm_agent'@'192.168.1.%' identified by 'agent';
Query OK, 0 rows affected (0.00 sec)

mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)

mysql>

8.在監(jiān)控節(jié)點(diǎn)修改配置文件

[root@tong3 ~]# cd /etc/mysql-mmm/
[root@tong3 mysql-mmm]# ll
total 16
-rw-r-----. 1 root root 33 Apr 29 14:06 mmm_agent.conf
-rw-r-----. 1 root root 684 Apr 29 14:06 mmm_common.conf
-rw-r-----. 1 root root 321 Apr 29 14:06 mmm_mon.conf
-rw-r-----. 1 root root 1293 Apr 29 14:06 mmm_tools.conf
[root@tong3 mysql-mmm]# vim mmm_common.conf

active_master_role writer

cluster_interface eth0 --心跳網(wǎng)卡接口

pid_path /var/run/mmm_agentd.pid
bin_path /usr/lib/mysql-mmm

replication_user repl_user --復(fù)制用戶名和密碼
replication_password system!#%246

agent_user mmm_agent --代理用戶名和密碼
agent_password agent

--主機(jī)名
ip 192.168.1.247 --tong1的IP地址
mode master --主模式
peer tong1 --主機(jī)名

ip 192.168.1.248
mode master
peer tong2

ip 192.168.1.249
mode slave --從服務(wù)器

hosts tong1, tong2 --tong1和tong2可寫
ips 192.168.1.120
mode exclusive

hosts tong1, tong2, tong3 --三臺(tái)可讀
ips 192.168.1.121
mode balanced

[root@tong3 mysql-mmm]# vim mmm_mon.conf

include mmm_common.conf

ip 127.0.0.1
pid_path /var/run/mmm_mond.pid
bin_path /usr/lib/mysql-mmm
status_path /var/lib/misc/mmm_mond.status
ping_ips 192.168.1.247, 192.168.1.248, 192.168.1.249
auto_set_online 10

monitor_user mmm_moniton --監(jiān)控用戶名和密碼
monitor_password moniton

debug 1 --為1是開啟服務(wù)打印日志,為0是只開啟服務(wù)

[root@tong3 mysql-mmm]# cat mmm_agent.conf
include mmm_common.conf
this tong3 --主機(jī)名
[root@tong3 mysql-mmm]#

9.將tong3節(jié)點(diǎn)的mmm_common.conf復(fù)制到tong1和tong2節(jié)點(diǎn)中

[root@tong3 mysql-mmm]# scp mmm_common.conf tong1:/etc/mysql-mmm/
mmm_common.conf 100% 674 0.7KB/s 00:00
You have mail in /var/spool/mail/root
[root@tong3 mysql-mmm]# scp mmm_common.conf tong2:/etc/mysql-mmm/
mmm_common.conf 100% 674 0.7KB/s 00:00
[root@tong3 mysql-mmm]#

tong1,tong2修改mmm_agent.conf文件并啟動(dòng)服務(wù)

[root@tong1 mysql-mmm]# cat mmm_agent.conf
include mmm_common.conf
this tong1 --修改主機(jī)名
[root@tong1 mysql-mmm]# /etc/init.d/mysql-mmm-agent restart --重啟服務(wù)
Daemon bin: '/usr/sbin/mmm_agentd'
Daemon pid: '/var/run/mmm_agentd.pid'
Daemon bin: '/usr/sbin/mmm_agentd'
Daemon pid: '/var/run/mmm_agentd.pid'
Shutting down MMM Agent daemon. Ok
Daemon bin: '/usr/sbin/mmm_agentd'
Daemon pid: '/var/run/mmm_agentd.pid'
Starting MMM Agent daemon... Ok
[root@tong1 mysql-mmm]#

tong3啟動(dòng)mmm-mysql-agent和mysql-mmm-monitor服務(wù)

[root@tong3 mysql-mmm]# /etc/init.d/mysql-mmm-agent restart
Daemon bin: '/usr/sbin/mmm_agentd'
Daemon pid: '/var/run/mmm_agentd.pid'
Daemon bin: '/usr/sbin/mmm_agentd'
Daemon pid: '/var/run/mmm_agentd.pid'
Shutting down MMM Agent daemon. Ok
Daemon bin: '/usr/sbin/mmm_agentd'
Daemon pid: '/var/run/mmm_agentd.pid'
Starting MMM Agent daemon... Ok
[root@tong3 mysql-mmm]# /etc/init.d/mysql-mmm-monitor restart
Daemon bin: '/usr/sbin/mmm_mond'
Daemon pid: '/var/run/mmm_mond.pid'
Daemon bin: '/usr/sbin/mmm_mond'
Daemon pid: '/var/run/mmm_mond.pid'
Shutting down MMM Monitor daemon: not running.
Daemon bin: '/usr/sbin/mmm_mond'
Daemon pid: '/var/run/mmm_mond.pid'
Starting MMM Monitor daemon: Ok
[root@tong3 mysql-mmm]# mmm_control show
tong1(192.168.1.247) master/ONLINE. Roles: writer(192.168.1.120)
tong2(192.168.1.248) master/ONLINE. Roles:
tong3(192.168.1.249) slave/ONLINE. Roles: reader(192.168.1.121)

[root@tong3 mysql-mmm]# mmm_control set_offline tong1
OK: State of 'tong1' changed to ADMIN_OFFLINE. Now you can wait some time and check all roles!
[root@tong3 mysql-mmm]# mmm_control show
tong1(192.168.1.247) master/ADMIN_OFFLINE. Roles:
tong2(192.168.1.248) master/ONLINE. Roles: writer(192.168.1.120)
tong3(192.168.1.249) slave/ONLINE. Roles: reader(192.168.1.121)

[root@tong3 mysql-mmm]# mmm_control set_offline tong3
OK: State of 'tong3' changed to ADMIN_OFFLINE. Now you can wait some time and check all roles!
[root@tong3 mysql-mmm]# mmm_control show
tong1(192.168.1.247) master/ADMIN_OFFLINE. Roles:
tong2(192.168.1.248) master/ONLINE. Roles: reader(192.168.1.121), writer(192.168.1.120)
tong3(192.168.1.249) slave/ADMIN_OFFLINE. Roles:

[root@tong3 mysql-mmm]# mmm_control set_online tong1
OK: State of 'tong1' changed to ONLINE. Now you can wait some time and check its new roles!
[root@tong3 mysql-mmm]# mmm_control set_online tong3
OK: State of 'tong3' changed to ONLINE. Now you can wait some time and check its new roles!
[root@tong3 mysql-mmm]# mmm_control show
tong1(192.168.1.247) master/ONLINE. Roles: reader(192.168.1.121)
tong2(192.168.1.248) master/ONLINE. Roles: writer(192.168.1.120)
tong3(192.168.1.249) slave/ONLINE. Roles:

You have mail in /var/spool/mail/root
[root@tong3 mysql-mmm]

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