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小編給大家分享一下如何安裝mysql-mmm,相信大部分人都還不怎么了解,因此分享這篇文章給大家參考一下,希望大家閱讀完這篇文章后大有收獲,下面讓我們一起去了解一下吧!
安裝mysql-mmm
1)安裝epel
相關(guān)文檔參見:http://fedoraproject.org/wiki/EPEL
rpm -Uvh http://download.fedora.redhat.com/pub/epel/5/i386/epel-release-5-4.noarch.rpm
2) monitor軟件安裝
[root@localhost ~]# yum install –y mysql-mmm-monitor-*
包如下:
[root@localhost ~]# rpm -qa|grep mysql
mysql-mmm-monitor-2.2.1-1.el5
mysql-mmm-2.2.1-1.el5
mysql-5.0.77-4.el5_5.4
3)所在機器安裝(包括master,slave)
[root@localhost ~]# yum install –y -mmm-agent*
包如下:
[root@localhost ~]# rpm -qa|grep mysql
mysql-test-5.0.77-4.el5_5.4
mysql-mmm-agent-2.2.1-1.el5
mysql-5.0.77-4.el5_5.4
mysql-server-5.0.77-4.el5_5.4
mysql-devel-5.0.77-4.el5_5.4
mysql-bench-5.0.77-4.el5_5.4
mysql-mmm-2.2.1-1.el5
mysql-connector-odbc-3.51.26r1127-1.el5
配置文件
1)monitor配置文件
[root@localhost ~]# vi /etc/mysql-mmm/mmm_mon.conf
include mmm_common.conf
<monitor>
ip 127.0.0.1
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 172.16.71.128,172.16.71.130 #master,slave實際數(shù)據(jù)庫ip
auto_set_online 60
</monitor>
<host default>
monitor_user mmm_monitor
monitor_password 10jqka
</host>
Debug
2)通用的配置文件,在monitor及master,slave上放置的這個文件都一致
[root@localhost ~]# vi /etc/mysql-mmm/mmm_common.conf
active_master_role writer
<host default>
cluster_interface eth0
pid_path /var/run/mysql-mmm/mmm_agentd.pid
bin_path /usr/libexec/mysql-mmm/
replication_user replicant
replication_password 10jqka
agent_user mmm_agent
agent_password 10jqka
</host>
<host db1>
ip 172.16.71.128 #真實master數(shù)據(jù)庫ip
mode master
peer db2
</host>
<host db2>
ip 172.16.71.130 #真實master數(shù)據(jù)庫ip
mode master
peer db1
</host>
#<host db3>
# ip 192.168.100.51 #真實slave數(shù)據(jù)庫ip
# mode slave
#</host>
<role writer>
hosts db1, db2
ips 172.16.71.253 #虛擬寫數(shù)據(jù)庫ip
mode exclusive
</role>
<role reader>
hosts db1, db2
ips 172.16.71.251,172.16.71.252 #虛擬讀數(shù)據(jù)庫ip
mode balanced
</role>
3)master,slave配置文件
[root@localhost ~]# vi /etc/mysql-mmm/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 db1#如為第一臺master db則為db1如為第二臺則為db2與mmm_common.conf里的機器對應(yīng)
查看效果
1)啟動db1的相關(guān)服務(wù)
service mysqld start
service mysql-mmm-agent start
數(shù)據(jù)庫授權(quán):所有數(shù)據(jù)庫的授權(quán)一致
GRANT REPLICATION CLIENT ON *.* TO 'mmm_monitor'@'172.16.71.%' IDENTIFIED BY '10jqka';
GRANT SUPER, REPLICATION CLIENT, PROCESS ON *.* TO 'mmm_agent'@'172.16.71.%' IDENTIFIED BY '10jqka';
grant all on *.* to replicant@'172.16.71.%' identified by '10jqka';
flush privileges;
2)啟動monitor相關(guān)服務(wù)
service mysql-mmm-monitor start
查看狀態(tài):
mmm_control show
把db1設(shè)置為online狀態(tài):
mmm_control set_online db1
開放mmm_agentd端口9989
真實機器查看分配的vip地址
[root@localhost ~]# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast qlen 1000
link/ether 00:0c:29:ef:79:70 brd ff:ff:ff:ff:ff:ff
inet 172.16.71.132/24 brd 172.16.71.255 scope global eth0
inet 172.16.71.251/32 scope global eth0
inet 172.16.71.253/32 scope global eth0
inet6 fe80::20c:29ff:feef:7970/64 scope link
valid_lft forever preferred_lft forever
主主(master-master)同步配置
1)172.16.71.132機器my.cnf
skip-name-resolve
server_id = 132
set-variable = key_buffer_size=512M
set-variable = table_cache=32
set-variable = sort_buffer_size=32M
set-variable = read_buffer_size=32M
set-variable = max_connections=2100
set-variable = log_slow_queries=/var/lib/mysql/log/mysql-slow.log
set-variable = log_bin=/var/lib/mysql/log/mysql-bin
set-variable = long_query_time=1
set-variable = thread_concurrency=16
set-variable = tmp_table_size=4000000000
set-variable = slave_skip_errors=all
#replicate-ignore-db=mysql
#replicate-ignore-db=test 發(fā)覺加上這個ignore選項后會導(dǎo)致mmm接管出現(xiàn)點小問題不知道為什么
log-slave-updates
sync_binlog=1
auto_increment_increment=2
auto_increment_offset=1
進入mysql配置設(shè)置為從
mysql> change master to master_host='172.16.71.128';
mysql>change master to master_user='repl';
mysql>change master to master_password='10jqka';
mysql>start slave
主(master)服務(wù)器配置:
GRANT REPLICATION SLAVE ON *.* TO 'repl'@'172.16.71.%' IDENTIFIED BY '10jqka';
2)172.16.71.128機器my.cnf配置
skip-name-resolve
server_id = 1
set-variable = key_buffer_size=512M
set-variable = table_cache=32
set-variable = sort_buffer_size=32M
set-variable = read_buffer_size=32M
set-variable = max_connections=2100
set-variable = log_slow_queries=/var/lib/mysql/log/mysql-slow.log
set-variable = log_bin=/var/lib/mysql/log/mysql-bin
set-variable = long_query_time=1
set-variable = thread_concurrency=16
set-variable = tmp_table_size=4000000000
set-variable = slave_skip_errors=all
#replicate-ignore-db=mysql
#replicate-ignore-db=test
log-slave-updates
sync_binlog=1
auto_increment_increment=2
auto_increment_offset=2
進入mysql配置設(shè)置為從
mysql> change master to master_host='172.16.71.132';
mysql>change master to master_user='repl';
mysql>change master to master_password='10jqka';
mysql>start slave
主(master)服務(wù)器配置:
GRANT REPLICATION SLAVE ON *.* TO 'repl'@'172.16.71.%' IDENTIFIED BY '10jqka';
其它從(slave)服務(wù)器配置:
my.cnf配置
skip-name-resolve
server_id = 1
set-variable = key_buffer_size=512M
set-variable = table_cache=32
set-variable = sort_buffer_size=32M
set-variable = read_buffer_size=32M
set-variable = max_connections=2100
set-variable = log_slow_queries=/var/lib/mysql/log/mysql-slow.log
set-variable = log_bin=/var/lib/mysql/log/mysql-bin
set-variable = long_query_time=1
set-variable = thread_concurrency=16
set-variable = tmp_table_size=4000000000
set-variable = slave_skip_errors=all
mysql>change master to master_host='172.16.71.253';
mysql>change master to master_user='repl';
mysql>change master to master_password='10jqka'; mysql>change master to master_log_file=’mysql-bin.00001’;
mysql>change master to master_log_pos=128; mysql>start slave
或者在my.cnf加入
server-id=2
master-host=172.16.71.253
master-user=repl
master-password=10jqka
問題1:
兩臺機器互為對方的主,此時不能使用master的VIP作為該兩機器的主,如果使用VIP作為master的話沒有一臺先起來作為vip機器的話些會導(dǎo)致monitor不能使用,日志如下:
2010/12/06 16:29:46 WARN db1 is not replicating from db2
2010/12/06 16:29:46 WARN db2 is not replicating from db1
問題2:
當/etc/mysql-mmm/mmm_mon.conf的auto_set_online 3時間設(shè)置為較長時,在瞬間關(guān)閉現(xiàn)有主,開啟現(xiàn)未開啟的備時,會導(dǎo)致monitor不能自動切換VIP導(dǎo)致mmm不可用,需要手工設(shè)置online狀態(tài),有時候甚至?xí)?dǎo)致monitor啟動問題。為防止這情況發(fā)生可以把該時間設(shè)置短些,或者先讓一其中的一臺主起來后,再關(guān)閉另一臺。
問題3:ERROR:Can't connect to monitor daemon
查看進程一般少了perl相關(guān)進程,莫名其妙的感覺,經(jīng)多次嘗試試驗,一般都是在mysql那些擁有agent機器上的配置問題,還有monitor的auto_set_online時間設(shè)置
[root@localhost ~]# ps axu|grep mmm
root 3113 0.0 7.6 14000 8956 ? S 16:27 0:00 mmm_mond
root 3115 0.9 33.2 106440 38976 ? Sl 16:27 0:00 mmm_mond
root 3136 0.4 5.5 10388 6456 ? S 16:28 0:00 perl /usr/libexec/mysql-mmm/monitor/checker ping_ip
root 3140 0.4 6.5 15208 7640 ? S 16:28 0:00 perl /usr/libexec/mysql-mmm/monitor/checker mysql
root 3141 0.3 5.4 10388 6448 ? S 16:28 0:00 perl /usr/libexec/mysql-mmm/monitor/checker ping
root 3142 0.5 6.5 15208 7636 ? S 16:28 0:00 perl /usr/libexec/mysql-mmm/monitor/checker rep_backlog
root 3144 0.6 6.4 15208 7592 ? S 16:28 0:00 perl /usr/libexec/mysql-mmm/monitor/checker rep_threads
root 3148 0.0 0.5 3916 652 pts/0 R+ 16:28 0:00 grep mmm
其它補充資料
主從狀態(tài)查看:
查看master的狀態(tài)
SHOW MASTER STATUS;
Position不應(yīng)為0
查看slave的狀態(tài)
show slave status;
Slave_IO_Running | Slave_SQL_Running這兩個字段 應(yīng)為YES|YES.
show processlist;查看進程
slave start; #啟動從復(fù)制
STOP SLAVE; #停止從復(fù)制
RESET MASTER; #重設(shè)master日志
RESET SLAVE;#重設(shè)slave日志
當Slave_IO_Running: 為No時,從服務(wù)器無法同步時操作下如
SLAVE STOP;#停止slave
CHANGE MASTER TO MASTER_LOG_FILE='mysql-bin.000001', MASTER_LOG_POS=0;
#把master_log_file設(shè)置為從主show master status;得出來的日志名,POS設(shè)置為0
SLAVE START;#再次啟用slave
Mysql普通主從配置(未使用mmm參考)
配置主從my.cnf文件:
skip-innodb
skip-name-resolve
server_id = 132
set-variable = key_buffer_size=512M
set-variable = table_cache=32
set-variable = sort_buffer_size=32M
set-variable = read_buffer_size=32M
set-variable = max_connections=2100
set-variable = log_slow_queries=/var/lib/mysql/log/mysql-slow.log
set-variable = log_bin=/var/lib/mysql/log/mysql-bin#從庫這條語句注釋掉
set-variable = long_query_time=1
set-variable = thread_concurrency=16
set-variable = tmp_table_size=4000000000
set-variable = slave_skip_errors=all
因為mysql版本不同在從服務(wù)器下開啟了下面選項導(dǎo)致同步不能進行
replicate-ignore-db=mysql
replicate-do-db =test
以上是“如何安裝mysql-mmm”這篇文章的所有內(nèi)容,感謝各位的閱讀!相信大家都有了一定的了解,希望分享的內(nèi)容對大家有所幫助,如果還想學(xué)習(xí)更多知識,歡迎關(guān)注億速云行業(yè)資訊頻道!
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