標籤:mysql mmm
一 mysql主從搭建
略
一 設定hosts解析
[[email protected] conf]# vi /etc/hosts (三台伺服器相同都添加下面三項)
192.168.31.2 M1
192.168.31.3 M2
192.168.31.4 slave1
二 設定各台伺服器的名字分別與hosts檔案中的對應
略
三 建立相應的帳號
GRANT REPLICATION SLAVE , REPLICATION CLIENT ON * . * TO ‘mmm_slave‘@‘192.168.31.%‘ IDENTIFIED BY ‘123456‘; (用於主從和主主複製 M1,M2 上都添加這個使用者)
flush privileges;
四 M1 M2 配置成主主模式
M1 設定檔
[mysqld]
innodb_file_per_table=1
log-bin=/data/mysql/mysql-bin.log
binlog_format = ROW
server-id=1
binlog-do-db=mmm_test
replicate-do-db=mmm_test
M2設定檔
[mysqld]
innodb_file_per_table=1
log-bin=/data/mysql/mysql-bin.log
binlog_format = ROW
server-id=2
binlog-do-db=mmm_test
replicate-do-db=mmm_test
在M2上執行
change master to master_host=‘192.168.31.2‘,master_user=‘mmm_slave‘,master_password=‘123456‘,master_log_file=‘mysql-bin.000017‘,master_log_pos=326;
start slave;
在M1 上執行 (主主模型)
change master to master_host=‘192.168.31.3‘,master_user=‘mmm_slave‘,master_password=‘123456‘,master_log_file=‘mysql-bin.000001‘,master_log_pos=312;
start slave;
五 配置M1和slave1 主從
slave1 設定檔
[mysqld]
server-id =3
innodb_file_per_table=1
log-bin=/data/mysql/mysql-bin.log
binlog_format = ROW
replicate-do-db=mmm_test
執行
change master to master_host=‘192.168.31.2‘,master_user=‘mmm_slave‘,master_password=‘123456‘,master_log_file=‘mysql-bin.000017‘,master_log_pos=326;
start slave;
六 安裝MySQL-MMM (三台伺服器執行結果相同)
[[email protected] software]# wget http://download.fedoraproject.org/pub/epel/5/x86_64/epel-release-5-4.noarch.rpm
[[email protected] software]# rpm -ivh epel-release-5-4.noarch.rpm
[[email protected] software]# yum -y install mysql-mmm*
[[email protected] software]# rpm -qa | grep mysql-mmm
mysql-mmm-2.2.1-2.el6.noarch
mysql-mmm-agent-2.2.1-2.el6.noarch
mysql-mmm-tools-2.2.1-2.el6.noarch
mysql-mmm-monitor-2.2.1-2.el6.noarch
七 在三個節點上授權
GRANT PROCESS,SUPER,REPLICATION CLIENT ON * . * TO ‘mmm_agent‘@‘192.168.31.%‘ IDENTIFIED BY ‘123456‘; (代理帳號,是MMM代理用來變成唯讀模式和同步master等的)
GRANT REPLICATION CLIENT ON * . * TO ‘mmm_monitor‘@‘192.168.31.%‘ IDENTIFIED BY ‘123456‘; (監聽帳號,是MMM監控伺服器用來對MySQL伺服器做健全狀態檢查的)
flush privileges;
八 配置 MMM 監控、代理服務
1 三台伺服器上修改mmm_common.conf (三台伺服器上執行步驟相同)
[[email protected] conf]# cd /etc/mysql-mmm/
[[email protected] mysql-mmm]# cp mmm_common.conf mmm_common.conf.bak
[[email protected] mysql-mmm]# vi mmm_common.conf
active_master_role writer
<host default>
cluster_interface eth1 # 這裡視情況而定 我的三台伺服器這裡不相同
pid_path /var/run/mysql-mmm/mmm_agentd.pid
bin_path /usr/libexec/mysql-mmm/
replication_user mmm_slave # 前面建立的複製帳號
replication_password 123456 # 複製帳號的密碼
agent_user mmm_agent # 前面建立的代理帳號
agent_password 123456 # 代理帳號的密碼
</host>
<host M1>
ip 192.168.31.2
mode master
peer M1
</host>
<host M2>
ip 192.168.31.3
mode master
peer M2
</host>
<host slave1>
ip 192.168.31.4
mode slave
</host>
<role writer>
hosts M1, M2 # 能夠作為writer的伺服器
ips 192.168.31.10 # writer節點的虛擬ip, 應用的寫請求將直接連接到這個ip
mode exclusive # 排他模式
</role>
<role reader>
hosts M1,M2,slave1 # 作為reader的伺服器
ips 192.168.31.20 # reader節點虛擬ip,應用的讀請求將直接連接到這個ip
mode balanced # 平衡模式
</role>
2 修改M1的mmm_agent.conf
[[email protected] mysql-mmm]# vi mmm_agent.conf
include mmm_common.conf
# The ‘this‘ variable refers to this server. Proper operation requires
# that ‘this‘ server (db1 by default), as well as all other servers, have the
# proper IP addresses set in mmm_common.conf.
this M1
3 修改M2的mmm_agent.conf
[[email protected] mysql-mmm]# vi mmm_agent.conf
include mmm_common.conf
# The ‘this‘ variable refers to this server. Proper operation requires
# that ‘this‘ server (db1 by default), as well as all other servers, have the
# proper IP addresses set in mmm_common.conf.
this M2
4 修改slave1的mmm_agent.conf
[[email protected] mysql-mmm]# vi mmm_agent.conf
include mmm_common.conf
# The ‘this‘ variable refers to this server. Proper operation requires
# that ‘this‘ server (db1 by default), as well as all other servers, have the
# proper IP addresses set in mmm_common.conf.
this slave1
5 修改 mon 上的mmm_mon.conf (這裡就是M1 共用一台伺服器)
[[email protected] mysql-mmm]# vi mmm_mon.conf
include mmm_common.conf
<monitor>
ip ip 192.168.31.2
pid_path /var/run/mysql-mmm/mmm_mond.pid
bin_path /usr/libexec/mysql-mmm
status_path /var/lib/mysql-mmm/mmm_mond.status
ping_ips 192.168.31.2,192.168.31.3,192.168.31.4
auto_set_online 10
# The kill_host_bin does not exist by default, though the monitor will
# throw a warning about it missing. See the section 5.10 "Kill Host
# Functionality" in the PDF documentation.
#
# kill_host_bin /usr/libexec/mysql-mmm/monitor/kill_host
#
</monitor>
<host default>
monitor_user mmm_monitor
monitor_password 123456
</host>
debug 0
九 啟動各個相關服務
1 三台伺服器都啟動mysql-mmm-agent服務
[[email protected] mysql-mmm]# /etc/init.d/mysql-mmm-agent start
[[email protected] mysql-mmm]# /etc/init.d/mysql-mmm-agent start
[[email protected] mysql-mmm]# /etc/init.d/mysql-mmm-agent start
2 在M1 上啟動mysql-mon服務
[[email protected] mysql-mmm]# /etc/init.d/mysql-mmm-monitor start
3 查看mysql-mon 監控機上的MMM狀態資訊
[[email protected] mysql-mmm]# mmm_control show
出現Can‘t connect to monitor daemon
則yum -y install perl-Time-HiRes*
如果還是出現 Can‘t connect to monitor daemon 則要檢查主從是否有問題
[[email protected] ~]# mmm_control show # 再次執行 會出現下面這幾行
M1(192.168.31.2) master/ONLINE. Roles: writer(192.168.31.10)
M2(192.168.31.3) master/ONLINE. Roles: reader(192.168.31.20)
slave1(192.168.31.4) slave/ONLINE. Roles:
[[email protected] ~]# mmm_control checks all # 出現下面這些
M1 ping [last change: 2015/09/24 00:39:19] OK
M1 mysql [last change: 2015/09/24 00:39:19] OK
M1 rep_threads [last change: 2015/09/24 00:39:19] ERROR: Replication is broken
......
M2 rep_backlog [last change: 2015/09/24 00:39:19] OK: Backlog is null
十 查看叢集日誌
[[email protected] ~]# tail -f /var/log/mysql-mmm/mmm_agentd.log
2015/09/23 18:38:11 FATAL Child exited with exitcode 98, restarting after 10 second sleep
2015/09/23 18:38:21 FATAL Listener: Can‘t create socket!
.......
2015/09/24 00:39:13 INFO Added: writer(192.168.31.10)
[[email protected] ~]# tail -f /var/log/mysql-mmm/mmm_mond.log
2015/09/24 00:35:10 WARN Checker ‘mysql‘ is dead!
......
2015/09/24 00:35:16 INFO Child exited normally (with exitcode 0), shutting down
[[email protected] mysql-mmm]# tail -f /var/log/mysql-mmm/mmm_agentd.log
2015/09/23 02:53:38 INFO END
.......
2015/09/24 00:38:55 INFO Child exited normally (with exitcode 0), shutting down
2015/09/24 00:38:55 INFO Changing active master to ‘M1‘
十一 測試
我們使用在M1 ip a 可以發現 192.168.31.10 在M1上
類比M1宕機
使用 service mysql stop
在查看 ip a 發現vip 在M2上了。
mmm實現mysql高可用