{"id":1735,"date":"2021-10-12T17:54:02","date_gmt":"2021-10-13T00:54:02","guid":{"rendered":"https:\/\/www.xh86.me\/?p=1735"},"modified":"2021-10-12T17:54:02","modified_gmt":"2021-10-13T00:54:02","slug":"mysql-%e9%ab%98%e5%8f%af%e7%94%a8%e9%9b%86%e7%be%a4%e6%9e%b6%e6%9e%84%e4%b9%8bmmm","status":"publish","type":"post","link":"https:\/\/www.xh86.me\/?p=1735","title":{"rendered":"MySQL \u9ad8\u53ef\u7528\u96c6\u7fa4\u67b6\u6784\u4e4bMMM"},"content":{"rendered":"

MMM\uff08Master-Master replication manager for MySQL\uff09\u662f\u4e00\u5957\u652f\u6301\u53cc\u4e3b\u6545\u969c\u5207\u6362\u548c\u53cc\u4e3b\u65e5\u5e38\u7ba1\u7406\u7684\u811a\u672c\u7a0b\u5e8f\u3002MMM\u4f7f\u7528Perl\u8bed\u8a00\u5f00\u53d1\uff0c\u4e3b\u8981\u7528\u6765\u76d1\u63a7\u548c\u7ba1\u7406MySQL Master-Master\uff08\u53cc\u4e3b\uff09\u590d\u5236\uff0c\u867d\u7136\u53eb\u505a\u53cc\u4e3b\u590d\u5236\uff0c\u4f46\u662f\u4e1a\u52a1\u4e0a\u540c\u4e00\u65f6\u523b\u53ea\u5141\u8bb8\u5bf9\u4e00\u4e2a\u4e3b\u8fdb\u884c\u5199\u5165\uff0c\u53e6\u4e00\u53f0\u5907\u9009\u4e3b\u4e0a\u63d0\u4f9b\u90e8\u5206\u8bfb\u670d\u52a1\uff0c\u4ee5\u52a0\u901f\u5728\u4e3b\u4e3b\u5207\u6362\u65f6\u523b\u5907\u9009\u4e3b\u7684\u9884\u70ed\uff0c\u53ef\u4ee5\u8bf4MMM\u8fd9\u5957\u811a\u672c\u7a0b\u5e8f\u4e00\u65b9\u9762\u5b9e\u73b0\u4e86\u6545\u969c\u5207\u6362\u7684\u529f\u80fd\uff0c\u53e6\u4e00\u65b9\u9762\u5176\u5185\u90e8\u9644\u52a0\u7684\u5de5\u5177\u811a\u672c\u4e5f\u53ef\u4ee5\u5b9e\u73b0\u591a\u4e2aslave\u7684read\u8d1f\u8f7d\u5747\u8861\u3002<\/p>\n

MMM\u63d0\u4f9b\u4e86\u81ea\u52a8\u548c\u624b\u52a8\u4e24\u79cd\u65b9\u5f0f\u79fb\u9664\u4e00\u7ec4\u670d\u52a1\u5668\u4e2d\u590d\u5236\u5ef6\u8fdf\u8f83\u9ad8\u7684\u670d\u52a1\u5668\u7684\u865a\u62dfip\uff0c\u540c\u65f6\u5b83\u8fd8\u53ef\u4ee5\u5907\u4efd\u6570\u636e\uff0c\u5b9e\u73b0\u4e24\u8282\u70b9\u4e4b\u95f4\u7684\u6570\u636e\u540c\u6b65\u7b49\u3002\u7531\u4e8eMMM\u65e0\u6cd5\u5b8c\u5168\u7684\u4fdd\u8bc1\u6570\u636e\u4e00\u81f4\u6027\uff0c\u6240\u4ee5MMM\u9002\u7528\u4e8e\u5bf9\u6570\u636e\u7684\u4e00\u81f4\u6027\u8981\u6c42\u4e0d\u662f\u5f88\u9ad8\uff0c\u4f46\u662f\u53c8\u60f3\u6700\u5927\u7a0b\u5ea6\u7684\u4fdd\u8bc1\u4e1a\u52a1\u53ef\u7528\u6027\u7684\u573a\u666f\u3002\u5bf9\u4e8e\u90a3\u4e9b\u5bf9\u6570\u636e\u7684\u4e00\u81f4\u6027\u8981\u6c42\u5f88\u9ad8\u7684\u4e1a\u52a1\uff0c\u975e\u5e38\u4e0d\u5efa\u8bae\u91c7\u7528MMM\u8fd9\u79cd\u9ad8\u53ef\u7528\u67b6\u6784\u3002<\/p>\n

MMM\u9879\u76ee\u6765\u81ea\u00a0Google\uff1ahttp:\/\/code.google.com\/p\/mysql-master-master<\/a><\/p>\n

\u5b98\u65b9\u7f51\u7ad9\u4e3a\uff1ahttp:\/\/mysql-mmm.org<\/a><\/p>\n

\u4e0b\u9762\u6211\u4eec\u901a\u8fc7\u4e00\u4e2a\u5b9e\u9645\u6848\u4f8b\u6765\u5145\u5206\u4e86\u89e3MMM\u7684\u5185\u90e8\u67b6\u6784\uff0c\u5982\u4e0b\u56fe\u6240\u793a\u3002<\/p>\n

\"Diagram\n\nDescription<\/p>\n

\u5177\u4f53\u7684\u914d\u7f6e\u4fe1\u606f\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n

\u89d2\u8272 ip\u5730\u5740 \u4e3b\u673a\u540d\u5b57 server-id<\/p>\n

monitoring 192.168.0.30 db2 –<\/p>\n

master1 192.168.0.60 db1 1<\/p>\n

master2 192.168.0.50 db2 2<\/p>\n

slave1 192.168.0.40 db3 3<\/p>\n

\u4e1a\u52a1\u4e2d\u7684\u670d\u52a1ip\u4fe1\u606f\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n

ip\u5730\u5740 \u89d2\u8272 \u63cf\u8ff0<\/p>\n

192.168.0.108 write \u5e94\u7528\u7a0b\u5e8f\u8fde\u63a5\u8be5ip\u5bf9\u4e3b\u5e93\u8fdb\u884c\u5199\u8bf7\u6c42<\/p>\n

192.168.0.88 read \u5e94\u7528\u7a0b\u5e8f\u8fde\u63a5\u8be5ip\u8fdb\u884c\u8bfb\u8bf7\u6c42<\/p>\n

192.168.0.98 read \u5e94\u7528\u7a0b\u5e8f\u8fde\u63a5\u8be5ip\u8fdb\u884c\u8bfb\u8bf7\u6c42<\/p>\n

\u5177\u4f53\u7684\u914d\u7f6e\u6b65\u9aa4\u5982\u4e0b\uff1a<\/p>\n

\uff081\uff09\u4e3b\u673a\u914d\u7f6e<\/p>\n

\u914d\u7f6e\/etc\/hosts,\u5728\u6240\u6709\u4e3b\u673a\u4e2d\uff0c\u6dfb\u52a0\u6240\u6709\u7684\u4e3b\u673a\u4fe1\u606f\uff1a<\/p>\n

[root@192.168.0.30 ~]# cat \/etc\/hosts<\/p>\n

192.168.0.60 db1<\/p>\n

192.168.0.50 db2<\/p>\n

192.168.0.40 db3<\/p>\n

[root@192.168.0.30 ~]#<\/p>\n

\uff082\uff09\u9996\u5148\u57283\u53f0\u4e3b\u673a\u4e0a\u5b89\u88c5mysql\u548c\u642d\u5efa\u590d\u5236\uff08192.168.0.60\u548c192.168.0.50\u4e92\u4e3a\u4e3b\u4ece\uff0c192.168.0.40\u4e3a192.168.0.60\u7684\u4ece\uff09\u5177\u4f53\u7684\u590d\u5236\u642d\u5efa\u8fd9\u91cc\u5c31\u7701\u7565\uff0c\u8981\u662f\u8fd9\u90fd\u4e0d\u4f1a\uff0c\u90a3\u4e48\u8be5\u6587\u7ae0\u5bf9\u4f60\u5c31\u6ca1\u610f\u601d\u4e86\u3002\u7136\u540e\u5728\u6bcf\u4e2amysql\u7684\u914d\u7f6e\u6587\u4ef6\u4e2d\u52a0\u5165\u4ee5\u4e0b\u5185\u5bb9\uff0c\u6ce8\u610fserver_id \u4e0d\u80fd\u91cd\u590d\u3002<\/strong><\/p>\n

db1\uff08192.168.0.60\uff09\u4e0a\uff1a<\/p>\n

server-id = 1<\/p>\n

log_slave_updates = 1<\/p>\n

auto-increment-increment = 2<\/p>\n

auto-increment-offset = 1<\/p>\n

db2\uff08192.168.0.50\uff09\u4e0a\uff1a<\/p>\n

server-id = 2<\/p>\n

log_slave_updates = 1<\/p>\n

auto-increment-increment = 2<\/p>\n

auto-increment-offset = 2<\/p>\n

db3\uff08192.168.0.40\uff09\u4e0a\uff1a<\/p>\n

server-id = 3<\/p>\n

log_slave_updates = 1<\/p>\n

\u4e0a\u9762\u7684id\u4e0d\u4e00\u5b9a\u8981\u6309\u987a\u5e8f\u6765\uff0c\u53ea\u8981\u6ca1\u6709\u91cd\u590d\u5373\u53ef\u3002<\/p>\n

\uff083\uff09\u5b89\u88c5MMM\u6240\u9700\u8981\u7684Perl\u6a21\u5757\uff08\u6240\u6709\u670d\u52a1\u5668\uff09\u6267\u884c\u8be5\u811a\u672c\uff0c\u4e5f\u53ef\u4ee5\u5b89\u88c5epel\u6e90\uff0c\u7136\u540eyum -y install mysql-mmm*\u6765\u5b89\u88c5MMM\uff1a<\/p>\n

rpm -ivh http:\/\/dl.fedoraproject.org\/pub\/epel\/6\/x86_64\/epel-release-6-8.noarch.rpm<\/p>\n

yum -y install mysql-mmm*<\/p>\n

[root@192.168.0.60 ~]# cat install.sh<\/p>\n

#!\/bin\/bash<\/p>\n

wget http:\/\/xrl.us\/cpanm –no-check-certificate<\/p>\n

mv cpanm \/usr\/bin<\/p>\n

chmod 755 \/usr\/bin\/cpanm<\/p>\n

cat > \/root\/list << EOF<\/p>\n

install Algorithm::Diff<\/p>\n

install Class::Singleton<\/p>\n

install DBI<\/p>\n

install DBD::mysql<\/p>\n

install File::Basename<\/p>\n

install File::stat<\/p>\n

install File::Temp<\/p>\n

install Log::Dispatch<\/p>\n

install Log::Log4perl<\/p>\n

install Mail::Send<\/p>\n

install Net::ARP<\/p>\n

install Net::Ping<\/p>\n

install Proc::Daemon<\/p>\n

install Thread::Queue<\/p>\n

install Time::HiRes<\/p>\n

EOF<\/p>\n

for package in `cat \/root\/list`<\/p>\n

do<\/p>\n

cpanm $package<\/p>\n

done<\/p>\n

[root@192.168.0.60 ~]#<\/p>\n

\uff084\uff09<\/p>\n

\u4e0b\u8f7dmysql-mmm\u8f6f\u4ef6\uff0c\u5728\u6240\u6709\u670d\u52a1\u5668\u4e0a\u5b89\u88c5\uff1a<\/p>\n

[root@192.168.0.60 ~]# wget http:\/\/mysql-mmm.org\/_media\/:mmm2:mysql-mmm-2.2.1.tar.gz<\/p>\n

[root@192.168.0.60 ~]# mv :mmm2:mysql-mmm-2.2.1.tar.gz mysql-mmm-2.2.1.tar.gz<\/p>\n

[root@192.168.0.60 ~]# tar xf mysql-mmm-2.2.1.tar.gz<\/p>\n

[root@192.168.0.60 ~]# cd mysql-mmm-2.2.1<\/p>\n

[root@192.168.0.60 mysql-mmm-2.2.1]# make install<\/p>\n

mysql-mmm\u5b89\u88c5\u540e\u7684\u4e3b\u8981\u62d3\u6251\u7ed3\u6784\u5982\u4e0b\u6240\u793a\uff08\u6ce8\u610f\uff1ayum\u5b89\u88c5\u7684\u548c\u6e90\u7801\u5b89\u88c5\u7684\u8def\u5f84\u6709\u6240\u533a\u522b\uff09\uff1a<\/p>\n

\u76ee\u5f55 \u4ecb\u7ecd<\/p>\n

\/usr\/lib\/perl5\/vendor_perl\/5.8.8\/MMM MMM\u4f7f\u7528\u7684\u4e3b\u8981perl\u6a21\u5757<\/p>\n

\/usr\/lib\/mysql-mmm MMM\u4f7f\u7528\u7684\u4e3b\u8981\u811a\u672c<\/p>\n

\/usr\/sbin MMM\u4f7f\u7528\u7684\u4e3b\u8981\u547d\u4ee4\u7684\u8def\u5f84<\/p>\n

\/etc\/init.d\/ MMM\u7684agent\u548cmonitor\u542f\u52a8\u670d\u52a1\u7684\u76ee\u5f55<\/p>\n

\/etc\/mysql-mmm MMM\u914d\u7f6e\u6587\u4ef6\u7684\u8def\u5f84\uff0c\u9ed8\u8ba4\u6240\u4ee5\u7684\u914d\u7f6e\u6587\u4ef6\u4f4d\u4e8e\u8be5\u76ee\u5f55\u4e0b<\/p>\n

\/var\/log\/mysql-mmm \u9ed8\u8ba4\u7684MMM\u4fdd\u5b58\u65e5\u5fd7\u7684\u4f4d\u7f6e<\/p>\n

\u5230\u8fd9\u91cc\u5df2\u7ecf\u5b8c\u6210\u4e86MMM\u7684\u57fa\u672c\u9700\u6c42\uff0c\u63a5\u4e0b\u6765\u9700\u8981\u914d\u7f6e\u5177\u4f53\u7684\u914d\u7f6e\u6587\u4ef6\uff0c\u5176\u4e2dmmm_common.conf\uff0cmmm_agent.conf\u4e3aagent\u7aef\u7684\u914d\u7f6e\u6587\u4ef6\uff0cmmm_mon.conf\u4e3amonitor\u7aef\u7684\u914d\u7f6e\u6587\u4ef6\u3002<\/p>\n

\uff085\uff09\u914d\u7f6eagent\u7aef\u7684\u914d\u7f6e\u6587\u4ef6\uff0c\u9700\u8981\u5728db1\uff0cdb2\uff0cdb3\u4e0a\u5206\u522b\u914d\u7f6e\u3002<\/p>\n

\u5728db1\u4e3b\u673a\u4e0a\u914d\u7f6eagent\u914d\u7f6e\u6587\u4ef6\uff1a<\/p>\n

[root@192.168.0.60 ~]# cd \/etc\/mysql-mmm\/<\/p>\n

[root@192.168.0.60 mysql-mmm]# cat mmm_common.conf<\/p>\n

active_master_role writer<\/p>\n

<host default><\/p>\n

cluster_interface eth1<\/p>\n

pid_path \/var\/run\/mmm_agentd.pid<\/p>\n

bin_path \/usr\/lib\/mysql-mmm\/<\/p>\n

replication_user repl<\/strong><\/p>\n

replication_password 123456<\/strong><\/p>\n

agent_user mmm_agent<\/strong><\/p>\n

agent_password mmm_agent<\/strong><\/p>\n

<\/host><\/p>\n

<host db1><\/p>\n

ip 192.168.0.60<\/p>\n

mode master<\/strong><\/p>\n

peer db2<\/p>\n

<\/host><\/p>\n

<host db2><\/p>\n

ip 192.168.0.50<\/p>\n

mode master<\/strong><\/p>\n

peer db1<\/p>\n

<\/host><\/p>\n

<host db3><\/p>\n

ip 192.168.0.40<\/p>\n

mode slave<\/strong><\/p>\n

<\/host><\/p>\n

<role writer><\/p>\n

hosts db1, db2<\/p>\n

ips 192.168.0.108<\/strong><\/p>\n

mode exclusive<\/strong><\/p>\n

<\/role><\/p>\n

<role reader><\/p>\n

hosts db2, db3<\/p>\n

ips 192.168.0.88, 192.168.0.98<\/strong><\/p>\n

mode balanced<\/p>\n

<\/role><\/p>\n

[root@192.168.0.60 mysql-mmm]#<\/p>\n

\u5176\u4e2dreplication_user<\/strong>\u7528\u4e8e\u68c0\u67e5\u590d\u5236\u7684\u7528\u6237\uff0cagent_user<\/strong>\u4e3aagent\u7684\u7528\u6237\uff0cmode<\/strong>\u6807\u660e\u662f\u5426\u4e3a\u4e3b\u6216\u8005\u5907\u9009\u4e3b\uff0c\u6216\u8005\u4ece\u5e93\u3002mode exclusive<\/strong>\u4e3b\u4e3a\u72ec\u5360\u6a21\u5f0f\uff0c\u540c\u4e00\u65f6\u523b\u53ea\u80fd\u6709\u4e00\u4e2a\u4e3b\uff0c<role write><\/strong>\u4e2dhosts\u8868\u793a\u76ee\u524d\u7684\u4e3b\u5e93\u548c\u5907\u9009\u4e3b\u7684\u771f\u5b9e\u4e3b\u673aip\u6216\u8005\u4e3b\u673a\u540d\uff0cips<\/strong>\u4e3a\u5bf9\u5916\u63d0\u4f9b\u7684\u865a\u62df\u673aip\u5730\u5740\uff0c<role readr><\/strong>\u4e2dhosts\u4ee3\u8868\u4ece\u5e93\u771f\u5b9e\u7684ip\u548c\u4e3b\u673a\u540d\uff0cips<\/strong>\u4ee3\u8868\u4ece\u5e93\u7684\u865a\u62dfip\u5730\u5740\u3002<\/p>\n

\u7531\u4e8edb2\u548cdb3\u4e24\u53f0\u4e3b\u673a\u4e5f\u8981\u914d\u7f6eagent\u914d\u7f6e\u6587\u4ef6\uff0c\u6211\u4eec\u76f4\u63a5\u628ammm_common.conf\u4ecedb1\u62f7\u8d1d\u5230db2\u548cdb3\u4e24\u53f0\u4e3b\u673a\u7684\/etc\/mysql-mmm\u4e0b\u3002<\/p>\n

\u6ce8\u610f\uff1amonitor\u4e3b\u673a\u8981\u9700\u8981\uff1a<\/strong><\/p>\n

scp \/etc\/mysql-mmm\/mmm_common.conf db2:\/etc\/mysql-mmm\/<\/p>\n

scp \/etc\/mysql-mmm\/mmm_common.conf db3:\/etc\/mysql-mmm\/<\/p>\n

\u5206\u522b\u5728db1\uff0cdb2\uff0cdb3\u4e09\u53f0\u4e3b\u673a\u7684\/etc\/mysql-mmm\u914d\u7f6emmm_agent.conf\u6587\u4ef6\uff0c\u5206\u522b\u7528\u4e0d\u540c\u7684\u5b57\u7b26\u6807\u8bc6\uff0c\u6ce8\u610f\u8fd9\u4e09\u53f0\u673a\u5668\u7684this db1\u8fd9\u5757\u8981\u60f3\uff0c\u6bd4\u5982\u672c\u73af\u5883\u4e2d\uff0cdb1\u8981\u914d\u7f6ethis db1\uff0cdb2\u8981\u914d\u7f6e\u4e3athis db2\uff0c\u800cdb3\u8981\u914d\u7f6e\u4e3athis db3\u3002<\/p>\n

\u5728db1\uff08192.168.0.60\uff09\u4e0a\uff1a<\/p>\n

[root@192.168.0.60 ~]# cat \/etc\/mysql-mmm\/mmm_agent.conf<\/p>\n

include mmm_common.conf<\/p>\n

this db1<\/p>\n

[root@192.168.0.60 ~]#<\/p>\n

\u5728db2\uff08192.168.0.50\uff09\u4e0a\uff1a<\/p>\n

[root@192.168.0.50 ~]# cat \/etc\/mysql-mmm\/mmm_agent.conf<\/p>\n

include mmm_common.conf<\/p>\n

this db2<\/p>\n

[root@192.168.0.50 ~]#<\/p>\n

\u5728db3\uff08192.168.0.40\uff09\u4e0a\uff1a<\/p>\n

[root@192.168.0.40 ~]# cat \/etc\/mysql-mmm\/mmm_agent.conf<\/p>\n

include mmm_common.conf<\/p>\n

this db3<\/p>\n

[root@192.168.0.40 ~]#<\/p>\n

\u5728db2\uff08192.168.0.30\uff09\u914d\u7f6emonitor\u7684\u914d\u7f6e\u6587\u4ef6\uff1a<\/p>\n

[root@192.168.0.30 ~]# cat \/etc\/mysql-mmm\/mmm_mon.conf<\/p>\n

include mmm_common.conf<\/p>\n

<monitor><\/p>\n

ip 127.0.0.1<\/p>\n

pid_path \/var\/run\/mysql-mmm\/mmm_mond.pid<\/p>\n

bin_path \/usr\/libexec\/mysql-mmm<\/p>\n

status_path \/var\/lib\/mysql-mmm\/mmm_mond.status<\/p>\n

ping_ips 192.168.0.40,192.168.0.50,192.168.0.60<\/p>\n

auto_set_online 60<\/p>\n

<\/monitor><\/p>\n

<host default><\/p>\n

monitor_user mmm_monitor<\/p>\n

monitor_password mmm_monitor<\/p>\n

<\/host><\/p>\n

debug 0<\/p>\n

[root@192.168.0.30 ~]#<\/p>\n

\u8fd9\u91cc\u53ea\u5728\u539f\u6709\u914d\u7f6e\u6587\u4ef6\u4e2d\u7684ping_ips\u6dfb\u52a0\u4e86\u6574\u4e2a\u67b6\u6784\u88ab\u76d1\u63a7\u4e3b\u673a\u7684ip\u5730\u5740\uff0c\u800c\u5728<host default>\u4e2d\u914d\u7f6e\u4e86\u7528\u4e8e\u76d1\u63a7\u7684\u7528\u6237\u3002<\/p>\n

\uff086\uff09\u521b\u5efa\u76d1\u63a7\u7528\u6237\uff0c\u8fd9\u91cc\u9700\u8981\u521b\u5efa3\u4e2a\u76d1\u63a7\u7528\u6237\uff0c\u5177\u4f53\u63cf\u8ff0\u5982\u4e0b\uff1a<\/p>\n

\u7528\u6237\u540d \u63cf\u8ff0 \u6743\u9650<\/p>\n

monitor user MMM\u7684monitor\u7aef\u76d1\u63a7\u6240\u6709\u7684mysql\u6570\u636e\u5e93\u7684\u72b6\u6001\u7528\u6237 REPLICATION CLIENT<\/p>\n

agent user \u4e3b\u8981\u662fMMM\u5ba2\u6237\u7aef\u7528\u4e8e\u6539\u53d8\u7684master\u7684read_only\u72b6\u6001\u7528\u6237 SUPER,REPLICATION CLIENT,PROCESS<\/p>\n

repl \u7528\u4e8e\u590d\u5236\u7684\u7528\u6237 REPLICATION SLAVE<\/p>\n

\u57283\u53f0\u670d\u52a1\u5668(db1,db2,db3\uff09\u8fdb\u884c\u6388\u6743\uff0c\u56e0\u4e3a\u6211\u4e4b\u524d\u7684\u4e3b\u4e3b\u590d\u5236\uff0c\u4ee5\u53ca\u4e3b\u4ece\u5df2\u7ecf\u662fok\u7684\uff0c\u6240\u4ee5\u6211\u5728\u5176\u4e2d\u4e00\u53f0\u670d\u52a1\u5668\u6267\u884c\u5c31ok\u4e86\u3002\u7528\u4e8e\u590d\u5236\u7684\u8d26\u53f7\u4e4b\u524d\u5df2\u7ecf\u6709\u4e86\uff0c\u6240\u4ee5\u8fd9\u91cc\u5c31\u6388\u6743\u4e24\u4e2a\u8d26\u53f7\u3002<\/p>\n

mysql> GRANT SUPER, REPLICATION CLIENT, PROCESS ON *.* TO ‘mmm_agent’@’192.168.0.%’ IDENTIFIED BY ‘mmm_agent’;<\/p>\n

Query OK, 0 rows affected (0.08 sec)<\/p>\n

mysql> GRANT REPLICATION CLIENT ON *.* TO ‘mmm_monitor’@’192.168.0.%’ IDENTIFIED BY ‘mmm_monitor’;<\/p>\n

Query OK, 0 rows affected (0.00 sec)<\/p>\n

mysql> flush privileges;<\/p>\n

Query OK, 0 rows affected (0.03 sec)<\/p>\n

mysql><\/p>\n

\u5982\u679c\u662f\u4ece\u5934\u5230\u5c3e\u4ece\u65b0\u642d\u5efa\uff0c\u5219\u52a0\u4e0a\u53e6\u5916\u4e00\u4e2a\u590d\u5236\u8d26\u6237\uff08\u5206\u522b\u57283\u53f0\u670d\u52a1\u5668\u90fd\u9700\u8981\u6267\u884c\u8fd93\u6761SQL\uff09\uff1a<\/p>\n

GRANT REPLICATION SLAVE ON *.* TO ‘repl’@’192.168.0.%’ IDENTIFIED BY ‘123456’;<\/p>\n

\uff087\uff09\u542f\u52a8agent\u670d\u52a1\u3002<\/p>\n

\u6700\u540e\u5206\u522b\u5728db1\uff0cdb2\uff0cdb3\u4e0a\u542f\u52a8agent\uff0c\u5e76\u5728db2\uff08192.168.0.30\uff09\u4e0a\u542f\u52a8monitor\u7a0b\u5e8f\uff1a<\/p>\n

[root@192.168.0.60 ~]# \/etc\/init.d\/mysql-mmm-agent start<\/p>\n

Daemon bin: ‘\/usr\/sbin\/mmm_agentd’<\/p>\n

Daemon pid: ‘\/var\/run\/mmm_agentd.pid’<\/p>\n

Starting MMM Agent daemon… Ok<\/p>\n

[root@192.168.0.60 ~]#<\/p>\n

[root@192.168.0.50 ~]# \/etc\/init.d\/mysql-mmm-agent start<\/p>\n

Starting MMM Agent Daemon: [ OK ]<\/p>\n

[root@192.168.0.50 ~]#<\/p>\n

\u56e0\u4e3a\u6211\u6709\u4e9b\u4f7f\u7528yum\u5b89\u88c5\u7684\uff0c\u6240\u4ee5\u542f\u52a8\u4fe1\u606f\u6709\u4e9b\u4e0d\u4e00\u6837\u3002^_^<\/p>\n

[root@192.168.0.40 ~]# \/etc\/init.d\/mysql-mmm-agent start<\/p>\n

Starting MMM Agent Daemon: [ OK ]<\/p>\n

[root@192.168.0.40 ~]#<\/p>\n

\u542f\u52a8monitor\uff1a<\/p>\n

[root@192.168.0.30 ~]# \/etc\/init.d\/mysql-mmm-monitor start<\/p>\n

Starting MMM Monitor Daemon: [ OK ]<\/p>\n

[root@192.168.0.30 ~]#<\/p>\n

\u5176\u4e2dagent\u7684\u65e5\u5fd7\u5b58\u653e\u5728\/var\/log\/mysql-mmm\/mmm_agentd.log\uff0cmonitor\u65e5\u5fd7\u653e\u5728\/var\/log\/mysql-mmm\/mmm_mond.log\uff0c\u542f\u52a8\u8fc7\u7a0b\u4e2d\u6709\u4ec0\u4e48\u95ee\u9898\uff0c\u901a\u5e38\u65e5\u5fd7\u90fd\u4f1a\u6709\u8be6\u7ec6\u7684\u8bb0\u5f55\u3002<\/p>\n

\uff088\uff09\u5728monitor\u4e3b\u673a\u4e0a\u68c0\u67e5\u96c6\u7fa4\u4e3b\u673a\u7684\u72b6\u6001\uff1a<\/p>\n

[root@192.168.0.30 ~]# mmm_control checks all<\/p>\n

db2 ping [last change: 2014\/04\/18 00:29:01] OK<\/p>\n

db2 mysql [last change: 2014\/04\/18 00:29:01] OK<\/p>\n

db2 rep_threads [last change: 2014\/04\/18 00:29:01] OK<\/p>\n

db2 rep_backlog [last change: 2014\/04\/18 00:29:01] OK: Backlog is null<\/p>\n

db3 ping [last change: 2014\/04\/18 00:29:01] OK<\/p>\n

db3 mysql [last change: 2014\/04\/18 00:29:01] OK<\/p>\n

db3 rep_threads [last change: 2014\/04\/18 00:29:01] OK<\/p>\n

db3 rep_backlog [last change: 2014\/04\/18 00:29:01] OK: Backlog is null<\/p>\n

db1 ping [last change: 2014\/04\/18 00:29:01] OK<\/p>\n

db1 mysql [last change: 2014\/04\/18 00:29:01] OK<\/p>\n

db1 rep_threads [last change: 2014\/04\/18 00:29:01] OK<\/p>\n

db1 rep_backlog [last change: 2014\/04\/18 00:29:01] OK: Backlog is null<\/p>\n

[root@192.168.0.30 ~]#<\/p>\n

\uff089)\u5728monitor\u4e3b\u673a\u4e0a\u68c0\u67e5\u96c6\u7fa4\u73af\u5883\u5728\u7ebf\u72b6\u51b5\uff1a<\/p>\n

[root@192.168.0.30 ~]# mmm_control show<\/p>\n

db1(192.168.0.60) master\/ONLINE. Roles: writer(192.168.0.108)<\/p>\n

db2(192.168.0.50) master\/ONLINE. Roles: reader(192.168.0.88)<\/p>\n

db3(192.168.0.40) slave\/ONLINE. Roles: reader(192.168.0.98)<\/p>\n

[root@192.168.0.30 ~]#<\/p>\n

\uff0810\uff09online\uff08\u4e0a\u7ebf\uff09\u6240\u6709\u4e3b\u673a\uff1a<\/p>\n

\u6211\u8fd9\u91cc\u4e3b\u673a\u5df2\u7ecf\u5728\u7ebf\u4e86\uff0c\u5982\u679c\u6ca1\u6709\u5728\u7ebf\uff0c\u53ef\u4ee5\u4f7f\u7528\u4e0b\u9762\u7684\u547d\u4ee4\u5c06\u76f8\u5173\u4e3b\u673aonline<\/p>\n

[root@192.168.0.30 ~]# mmm_control set_online db1<\/p>\n

OK: This host is already ONLINE. Skipping command.<\/p>\n

[root@192.168.0.30 ~]#<\/p>\n

\u63d0\u793a\u4e3b\u673a\u5df2\u7ecf\u5728\u7ebf\uff0c\u5df2\u7ecf\u8df3\u8fc7\u547d\u4ee4\u6267\u884c\u4e86\u3002<\/p>\n

\u5230\u8fd9\u91cc\u6574\u4e2a\u96c6\u7fa4\u5c31\u914d\u7f6e\u5b8c\u6210\u4e86\u3002\u4ece\u8f93\u51fa\u4e2d\u53ef\u4ee5\u770b\u5230\u865a\u62dfip\u00a0192.168.0.108\u5df2\u7ecf\u987a\u5229\u6dfb\u52a0\u5230\u4e3b\u673a192.168.0.60\u4e0a\u4f5c\u4e3a\u4e3b\u5bf9\u5916\u63d0\u4f9b\u5199\u670d\u52a1\uff0c\u865a\u62dfip\u00a0192.168.0.88\u6dfb\u52a0\u5230\u4e3b\u673a192.168.0.50\u4e0a\u5bf9\u5916\u63d0\u4f9b\u8bfb\u670d\u52a1\uff0c\u800c\u865a\u62dfip\u00a0192.168.0.98\u6dfb\u52a0\u5230192.168.0.40\u4e0a\u5bf9\u5916\u63d0\u4f9b\u8bfb\u670d\u52a1\u3002<\/p>\n

MMM\u9ad8\u53ef\u7528\u6d4b\u8bd5<\/strong><\/p>\n

\u6211\u4eec\u5df2\u7ecf\u5b8c\u6210\u9ad8\u53ef\u7528\u73af\u5883\u7684\u642d\u5efa\u4e86\uff0c\u4e0b\u9762\u6211\u4eec\u5c31\u53ef\u4ee5\u505aMMM\u7684HA\u6d4b\u8bd5\u54af\u3002\u9996\u5148\u67e5\u770b\u6574\u4e2a\u96c6\u7fa4\u7684\u72b6\u6001\uff0c\u53ef\u4ee5\u770b\u5230\u6574\u4e2a\u96c6\u7fa4\u72b6\u6001\u6b63\u5e38\u3002<\/p>\n

[root@192.168.0.30 ~]# mmm_control show<\/p>\n

db1(192.168.0.60) master\/ONLINE. Roles: writer(192.168.0.108)<\/p>\n

db2(192.168.0.50) master\/ONLINE. Roles: reader(192.168.0.88)<\/p>\n

db3(192.168.0.40) slave\/ONLINE. Roles: reader(192.168.0.98)<\/p>\n

[root@192.168.0.30 ~]#<\/p>\n

\u6a21\u62dfdb2\uff08192.168.0.50\u00a0\uff09\u5b95\u673a\uff0c\u624b\u52a8\u505c\u6b62mysql\u670d\u52a1\uff0c\u89c2\u5bdfmonitor\u65e5\u5fd7\uff1a<\/p>\n

[root@192.168.0.30 ~]# tail -f \/var\/log\/mysql-mmm\/mmm_mond.log<\/p>\n

2014\/04\/18 00:55:53 FATAL State of host ‘db2’ changed from ONLINE to HARD_OFFLINE (ping: OK, mysql: not OK)<\/p>\n

\u4ece\u65e5\u5fd7\u53d1\u73b0db2\u7684\u72b6\u6001\u6709ONLINE\u8f6c\u6362\u4e3aHARD_OFFLINE<\/p>\n

\u91cd\u65b0\u67e5\u770b\u96c6\u7fa4\u7684\u6700\u65b0\u72b6\u6001\uff1a<\/p>\n

[root@192.168.0.30 ~]# mmm_control show<\/p>\n

db1(192.168.0.60) master\/ONLINE. Roles: writer(192.168.0.108)<\/p>\n

db2(192.168.0.50) master\/HARD_OFFLINE. Roles:<\/p>\n

db3(192.168.0.40) slave\/ONLINE. Roles: reader(192.168.0.88), reader(192.168.0.98)<\/p>\n

[root@192.168.0.30 ~]#<\/p>\n

\u91cd\u542fdb2\uff0c\u53ef\u4ee5\u770b\u5230db2\u7531HARD_OFFLINE\u8f6c\u5230AWAITING_RECOVERY\u3002\u8fd9\u91ccdb2\u518d\u6b21\u63a5\u7ba1\u8bfb\u8bf7\u6c42\u3002<\/p>\n

[root@192.168.0.30 ~]# mmm_control show<\/p>\n

db1(192.168.0.60) master\/ONLINE. Roles: writer(192.168.0.108)<\/p>\n

db2(192.168.0.50) master\/ONLINE. Roles: reader(192.168.0.88)<\/p>\n

db3(192.168.0.40) slave\/ONLINE. Roles: reader(192.168.0.98)<\/p>\n

[root@192.168.0.30 ~]#<\/p>\n

\u6a21\u62dfdb1\u4e3b\u5e93\u5b95\u673a\uff1a<\/p>\n

\u67e5\u770b\u96c6\u7fa4\u72b6\u6001\uff1a<\/p>\n

[root@192.168.0.30 ~]# mmm_control show<\/p>\n

db1(192.168.0.60) master\/HARD_OFFLINE. Roles:<\/p>\n

db2(192.168.0.50) master\/ONLINE. Roles: reader(192.168.0.88), writer(192.168.0.108)<\/p>\n

db3(192.168.0.40) slave\/ONLINE. Roles: reader(192.168.0.98)<\/p>\n

[root@192.168.0.30 ~]#<\/p>\n

\u67e5\u770bMMM\u65e5\u5fd7\uff1a<\/p>\n

[root@192.168.0.30 ~]# tail -f \/var\/log\/mysql-mmm\/mmm_mond.log<\/p>\n

2014\/04\/18 01:09:20 FATAL State of host ‘db1’ changed from ONLINE to HARD_OFFLINE (ping: OK, mysql: not OK)<\/p>\n

\u4ece\u4e0a\u9762\u53ef\u4ee5\u53d1\u73b0\uff0cdb1\u7531\u4ee5\u524d\u7684ONLINE\u8f6c\u5316\u4e3aHARD_OFFLINE\uff0c\u79fb\u9664\u4e86\u5199\u89d2\u8272\uff0c\u56e0\u4e3adb2\u662f\u5907\u9009\u4e3b\uff0c\u6240\u4ee5\u63a5\u7ba1\u4e86\u5199\u89d2\u8272\uff0cdb3\u6307\u5411\u65b0\u7684\u4e3b\u5e93db2\uff0c\u5e94\u8be5\u8bf4db3\u5b9e\u9645\u4e0a\u627e\u5230\u4e86db2\u7684sql\u73b0\u5728\u7684\u4f4d\u7f6e\uff0c\u5373db2 show master\u8fd4\u56de\u7684\u503c\uff0c\u7136\u540e\u76f4\u63a5\u5728db3\u4e0achange master to\u5230db2\u3002<\/p>\n

db1\uff0cdb2\uff0cdb3\u4e4b\u95f4\u4e3a\u4e00\u4e3b\u4e24\u4ece\u7684\u590d\u5236\u5173\u7cfb\uff0c\u4e00\u65e6\u53d1\u751fdb2\uff0cdb3\u5ef6\u65f6\u4e8edb1\u65f6\uff0c\u8fd9\u4e2a\u65f6\u523bdb1 mysql\u5b95\u673a\uff0cdb3\u5c06\u4f1a\u7b49\u5f85\u6570\u636e\u8ffd\u4e0adb1\u540e\uff0c\u518d\u91cd\u65b0\u6307\u5411\u65b0\u7684\u4e3bdb2\uff0c\u8fdb\u884cchange master to db2\u64cd\u4f5c\uff0c\u5728db1\u5b95\u673a\u7684\u8fc7\u7a0b\u4e2d\uff0c\u4e00\u65e6db2\u843d\u540e\u4e8edb1\uff0c\u8fd9\u65f6\u53d1\u751f\u5207\u6362\uff0cdb2\u53d8\u6210\u4e86\u53ef\u5199\u72b6\u6001\uff0c\u6570\u636e\u7684\u4e00\u81f4\u6027\u5c06\u4f1a\u65e0\u6cd5\u4fdd\u8bc1\u3002<\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

MMM\uff08Master-Master replication manager for MySQL\uff09\u662f\u4e00\u5957\u652f\u6301\u53cc\u4e3b […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12],"tags":[],"class_list":["post-1735","post","type-post","status-publish","format-standard","hentry","category-linux"],"_links":{"self":[{"href":"https:\/\/www.xh86.me\/index.php?rest_route=\/wp\/v2\/posts\/1735","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.xh86.me\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.xh86.me\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.xh86.me\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.xh86.me\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1735"}],"version-history":[{"count":1,"href":"https:\/\/www.xh86.me\/index.php?rest_route=\/wp\/v2\/posts\/1735\/revisions"}],"predecessor-version":[{"id":1737,"href":"https:\/\/www.xh86.me\/index.php?rest_route=\/wp\/v2\/posts\/1735\/revisions\/1737"}],"wp:attachment":[{"href":"https:\/\/www.xh86.me\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1735"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.xh86.me\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1735"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.xh86.me\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1735"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}