{"id":92255,"date":"2026-08-09T21:24:45","date_gmt":"2026-08-09T13:24:45","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/92255.html"},"modified":"2026-08-09T21:24:45","modified_gmt":"2026-08-09T13:24:45","slug":"%e7%ac%ac%e4%ba%8c%e7%ab%a0-mysql%e9%9b%86%e7%be%a4%e9%ab%98%e5%8f%af%e7%94%a8%e6%9e%b6%e6%9e%84","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/92255.html","title":{"rendered":"\u7b2c\u4e8c\u7ae0 MySQL\u96c6\u7fa4\u9ad8\u53ef\u7528\u67b6\u6784"},"content":{"rendered":"

2.1 mysql\u9ad8\u53ef\u7528\u4e4b\u7ec4\u590d\u5236 (MGR)<\/h3>\n

MySQL Group Replication(\u7b80\u79f0 MGR )\u662f MySQL \u5b98\u65b9\u4e8e 2016 \u5e74 12 \u6708\u63a8\u51fa\u7684\u4e00\u4e2a\u5168\u65b0\u7684\u9ad8\u53ef\u7528\u4e0e\u9ad8\u6269\u5c55\u7684\u89e3\u51b3\u65b9\u6848\u3002 \u7ec4\u590d\u5236\u662f MySQL 5.7.17 \u7248\u672c\u51fa\u73b0\u7684\u65b0\u7279\u6027，\u5b83\u63d0\u4f9b\u4e86\u9ad8\u53ef\u7528\u3001\u9ad8\u6269\u5c55\u3001\u9ad8\u53ef\u9760\u7684 MySQL \u96c6\u7fa4\u670d\u52a1\u3002 MySQL \u7ec4\u590d\u5236\u5206\u5355\u4e3b\u6a21\u5f0f\u548c\u591a\u4e3b\u6a21\u5f0f，\u4f20\u7edf\u7684mysql\u590d\u5236\u6280\u672f\u4ec5\u89e3\u51b3\u4e86\u6570\u636e\u540c\u6b65\u7684\u95ee\u9898，MGR \u5bf9\u5c5e\u4e8e\u540c\u4e00\u7ec4\u7684\u670d\u52a1\u5668\u81ea\u52a8\u8fdb\u884c\u534f\u8c03\u3002\u5bf9\u4e8e\u8981\u63d0\u4ea4\u7684\u4e8b\u52a1，\u7ec4\u6210\u5458\u5fc5\u987b\u5c31\u5168\u5c40\u4e8b\u52a1\u5e8f\u5217\u4e2d\u7ed9\u5b9a\u4e8b\u52a1\u7684\u987a\u5e8f\u8fbe\u6210\u4e00\u81f4，\u63d0\u4ea4\u6216\u56de\u6eda\u4e8b\u52a1\u7531\u6bcf\u4e2a\u670d\u52a1\u5668\u5355\u72ec\u5b8c\u6210，\u4f46\u6240\u6709\u670d\u52a1\u5668\u90fd\u5fc5\u987b\u505a\u51fa\u76f8\u540c\u7684\u51b3\u5b9a，\u5982\u679c\u5b58\u5728\u7f51\u7edc\u5206\u533a，\u5bfc\u81f4\u6210\u5458\u65e0\u6cd5\u8fbe\u6210\u4e8b\u5148\u5b9a\u4e49\u7684\u5206\u5272\u7b56\u7565，\u5219\u5728\u89e3\u51b3\u6b64\u95ee\u9898\u4e4b\u524d\u7cfb\u7edf\u4e0d\u4f1a\u7ee7\u7eed\u8fdb\u884c，\u76f4\u5230\u7f51\u7edc\u95ee\u9898\u89e3\u51b3，\u8fd9\u662f\u4e00\u79cd\u5185\u7f6e\u7684\u8111\u88c2\u4fdd\u62a4\u673a\u5236\u3002 MGR\u7531\u7ec4\u901a\u4fe1\u7cfb\u7edf( Group Communication System ， GCS ) \u534f\u8bae\u652f\u6301\u8be5\u7cfb\u7edf\u63d0\u4f9b\u6545\u969c\u68c0\u6d4b\u673a\u5236\u3001\u7ec4\u6210\u5458\u670d\u52a1\u4ee5\u53ca\u5b89\u5168\u4e14\u6709\u5e8f\u7684\u6d88\u606f\u4f20\u9012\u3002<\/p>\n

2.1.1 \u7ec4\u590d\u5236\u6d41\u7a0b<\/h4>\n

\u9996\u5148\u6211\u4eec\u5c06\u591a\u4e2a\u8282\u70b9\u5171\u540c\u7ec4\u6210\u4e00\u4e2a\u590d\u5236\u7ec4，\u5728\u6267\u884c\u8bfb\u5199（RW）\u4e8b\u52a1\u7684\u65f6\u5019，\u9700\u8981\u901a\u8fc7\u4e00\u81f4\u6027\u534f\u8bae\u5c42（Consensus \u5c42）\u7684\u540c\u610f，\u4e5f\u5c31\u662f\u8bfb\u5199\u4e8b\u52a1\u60f3\u8981\u8fdb\u884c\u63d0\u4ea4，\u5fc5\u987b\u8981\u7ecf\u8fc7\u7ec4\u91cc\u201c\u5927\u591a\u6570\u4eba\u201d（\u5bf9\u5e94 Node \u8282\u70b9）\u7684\u540c\u610f，\u5927\u591a\u6570\u6307\u7684\u662f\u540c\u610f\u7684\u8282\u70b9\u6570\u91cf\u9700\u8981\u5927\u4e8e （N\/2+1），\u8fd9\u6837\u624d\u53ef\u4ee5\u8fdb\u884c\u63d0\u4ea4，\u800c\u4e0d\u662f\u539f\u53d1\u8d77\u65b9\u4e00\u4e2a\u8bf4\u4e86\u7b97\u3002\u800c\u9488\u5bf9\u53ea\u8bfb（RO）\u4e8b\u52a1\u5219\u4e0d\u9700\u8981\u7ecf\u8fc7\u7ec4\u5185\u540c\u610f，\u76f4\u63a5 \u63d0\u4ea4 \u5373\u53ef \u3002<\/p>\n

2.1.2 \u7ec4\u590d\u5236\u5355\u4e3b\u548c\u591a\u4e3b\u6a21\u5f0f<\/h4>\n

single-primary mode(\u5355\u5199\u6216\u5355\u4e3b\u6a21\u5f0f) \u5355\u5199\u6a21\u5f0f group \u5185\u53ea\u6709\u4e00\u53f0\u8282\u70b9\u53ef\u5199\u53ef\u8bfb，\u5176\u4ed6\u8282\u70b9\u53ea\u53ef\u4ee5\u8bfb\u3002\u5f53\u4e3b\u670d\u52a1\u5668\u5931\u8d25\u65f6，\u4f1a\u81ea\u52a8\u9009\u62e9\u65b0\u7684\u4e3b\u670d\u52a1\u5668\u3002<\/p>\n

multi-primary mode(\u591a\u5199\u6216\u591a\u4e3b\u6a21\u5f0f) \u7ec4\u5185\u7684\u6240\u6709\u673a\u5668\u90fd\u662f primary \u8282\u70b9，\u540c\u65f6\u53ef\u4ee5\u8fdb\u884c\u8bfb\u5199\u64cd\u4f5c，\u5e76\u4e14\u6570\u636e\u662f\u6700\u7ec8\u4e00\u81f4\u7684\u3002<\/p>\n

2.1.3 \u5b9e\u73b0mysql\u7ec4\u590d\u5236-\u5355\u4e3b\u6a21\u5f0f<\/h4>\n

（1）\u73af\u5883\u8bf4\u660e<\/p>\n\n\u4e3b\u673a\u540dip\u64cd\u4f5c\u7cfb\u7edf\u7248\u672cmysql\u7248\u672c<\/tr>\n\n\n\n\n
master<\/td>\n192.168.168.128\/24<\/td>\nrhel7.9<\/td>\nmysql8.0.40<\/td>\n<\/tr>\n
rep1<\/td>\n192.168.168.129\/24<\/td>\nrhel7.9<\/td>\nmysql8.0.40<\/td>\n<\/tr>\n
rep2<\/td>\n192.168.168.130\/24<\/td>\nrhel7.9<\/td>\nmysql8.0.40<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

https:\/\/dev.mysql.com\/doc\/refman\/8.0\/en\/group-replication-configuring-instances.html<\/p>\n

\u6240\u6709\u4e3b\u673a\u4e0a\u914d\u7f6e\u57df\u540d\u81ea\u89e3\u6790：<\/p>\n

#\u4e09\u4e2a\u4e3b\u673a\u5747\u9700\u8981\u914d\u7f6ehosts\u6587\u4ef6\u7684\u89e3\u6790，\u5982\u679c\u4e0d\u914d\u7f6e\u57df\u540d\u89e3\u6790\u5219\u9700\u8981\u5728\/etc\/my.cnf\u4e2d\u52a0\u4e00\u6761\u914d\u7f6eskip-name-resolve
\n[root@node1 ~]# cat \/etc\/hosts
\n192.168.168.128 master
\n192.168.168.129 rep1
\n192.168.168.130 rep2 <\/p>\n

（2）master\u7684\u914d\u7f6e<\/p>\n

#1）\u4fee\u6539\u914d\u7f6e\u6587\u4ef6
\n[root@master ~]# vim \/etc\/my.cnf
\n[mysqld]
\ndatadir=\/data\/mysql
\nsocket=\/data\/mysql\/mysql.sock
\nlog_timestamps=SYSTEM \u00a0 #\u8bbe\u7f6e\u65e5\u5fd7\u65f6\u95f4\u548c\u672c\u5730\u65f6\u95f4\u4fdd\u6301\u4e00\u81f4
\nserver_id=128
\ndisabled_storage_engines="MyISAM,BLACKHOLE,FEDERATED,ARCHIVE,MEMORY" \u00a0 #\u7ec4\u590d\u5236，\u6570\u636e\u5fc5\u987b\u5b58\u50a8\u5728 InnoDB \u4e8b\u52a1\u5b58\u50a8\u5f15\u64ce\u4e2d
\ngtid_mode=ON \u00a0#\u7ec4\u590d\u5236\u8981\u5f00\u542fgtid
\nenforce_gtid_consistency=ON
\nlog_bin=binlog \u00a0#\u9ed8\u8ba4\u5f00\u542f
\nlog_slave_updates=ON #\u9ed8\u8ba4\u5f00\u542f
\nbinlog_format=ROW \u00a0#\u9ed8\u8ba4\u5f00\u542f
\ntransaction_write_set_extraction=XXHASH64 \u00a0#\u9ed8\u8ba4\u5f00\u542f，\u7ec4\u590d\u5236\u4f7f\u7528\u6b64\u4fe1\u606f\u5728\u6240\u6709\u7ec4\u6210\u5458\u4e0a\u8fdb\u884c\u51b2\u7a81\u68c0\u6d4b
\nplugin_load_add='group_replication.so' \u00a0#\u5c06\u7ec4\u590d\u5236\u63d2\u4ef6\u6dfb\u52a0\u5230\u670d\u52a1\u5668\u542f\u52a8\u65f6\u52a0\u8f7d\u7684\u63d2\u4ef6\u5217\u8868\u4e2d
\ngroup_replication_group_name="aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa" \u00a0#\u544a\u8bc9\u63d2\u4ef6\u5b83\u6b63\u5728\u52a0\u5165\u6216\u521b\u5efa\u7684\u7ec4\u540d\u4e3a\u201caaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaa\u201d
\ngroup_replication_start_on_boot=off \u00a0#\u63d2\u4ef6\u5728\u670d\u52a1\u5668\u542f\u52a8\u65f6\u4e0d\u81ea\u52a8\u542f\u52a8\u64cd\u4f5c，\u4f7f\u7528\u624b\u52a8\u542f\u52a8\u63d2\u4ef6
\ngroup_replication_local_address= "192.168.168.128:33061" \u00a0#\u4e0e\u5176\u5b83\u4e3b\u673a\u901a\u4fe1\u65f6\u4f7f\u7528\u7684\u7f51\u7edc\u5730\u5740\u548c\u7aef\u53e3
\ngroup_replication_group_seeds= "192.168.168.128:33061,192.168.168.129:33061,192.168.168.130:33061" \u00a0#\u8bbe\u7f6e\u7ec4\u6210\u5458\u7684\u4e3b\u673a\u540d\u548c\u7aef\u53e3
\ngroup_replication_bootstrap_group=off \u00a0#\u6307\u793a\u63d2\u4ef6\u662f\u5426\u542f\u52a8\u8be5\u7ec4，\u5728\u9996\u6b21\u5f15\u5bfc\u7ec4\u65f6\u5728\u4e00\u4e2a\u670d\u52a1\u5668\u4e0a\u542f\u7528
\ngroup_replication_ip_whitelist="192.168.168.0\/24,127.0.0.1\/8" \u00a0#\u4ec5\u5141\u8bb8\u767d\u540d\u5355\u5185\u7684 IP \u52a0\u5165\u590d\u5236\u7ec4
\ngroup_replication_recovery_use_ssl=on #caching_sha2_password\u63d2\u4ef6\u8981\u6c42\u5b89\u5168\u4f20\u8f93\u5bc6\u7801，\u5f00\u542f\u4e3b\u4ece\u4e4b\u95f4\u7684\u8fde\u63a5\u4f7f\u7528SSL\/TLS
\n[root@master ~]# \/etc\/init.d\/mysqld restart
\n\u200b
\n#2）\u5728\u4e3b\u7684\u6570\u636e\u5e93\u4e2d\u4f7f\u7528sql\u8bed\u53e5\u6dfb\u52a0\u590d\u5236\u8d26\u53f7\u5e76\u6388\u4e88\u6743\u9650，\u4ece\u4e0a\u9762\u4e5f\u9700\u8981\u8bbe\u7f6e\u4e00\u6837\u7684\u8d26\u53f7
\nSET SQL_LOG_BIN=0;
\nCREATE USER rp@'%' IDENTIFIED BY '123';
\nGRANT REPLICATION SLAVE ON *.* TO rp@'%';
\nGRANT CONNECTION_ADMIN ON *.* TO rp@'%';
\nGRANT BACKUP_ADMIN ON *.* TO rp@'%';
\nGRANT GROUP_REPLICATION_STREAM ON *.* TO rp@'%';
\nFLUSH PRIVILEGES;
\nSET SQL_LOG_BIN=1;
\nCHANGE REPLICATION SOURCE TO SOURCE_USER='rp', SOURCE_PASSWORD='123' FOR CHANNEL 'group_replication_recovery';
\n\u200b
\n#\u6ce8\u610f：\u5982\u679c\u9700\u8981\u91cd\u7f6e\u5219\u4f7f\u7528\u547d\u4ee4reset master;
\n\u200b
\n#3）\u67e5\u770b\u662f\u5426\u6709group_replication\u63d2\u4ef6
\nmysql> show plugins;
\n| group_replication \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 | ACTIVE \u00a0 | GROUP REPLICATION | group_replication.so | GPL \u00a0 \u00a0 |
\n#4）\u542f\u52a8MGR\u96c6\u7fa4
\n#\u4f7f\u7528\u5f53\u524d\u670d\u52a1\u5668\u4f5c\u4e3a\u5f15\u5bfc\u670d\u52a1\u5668\u542f\u52a8\u4e00\u4e2a\u65b0\u7684\u7fa4\u7ec4\u590d\u5236\u8fc7\u7a0b\u6216\u8005\u6062\u590d\u4e00\u4e2a\u5df2\u7ecf\u5b58\u5728\u7684\u7fa4\u7ec4
\nSET GLOBAL group_replication_bootstrap_group=ON;
\nSTART GROUP_REPLICATION USER='rp',PASSWORD='123';
\nSET GLOBAL group_replication_bootstrap_group=OFF;
\n#\u5728\u4e3b\u4e0a\u67e5\u770b\u7ec4\u4fe1\u606f
\nmysql> SELECT * FROM performance_schema.replication_group_members; <\/p>\n

\u8bf4\u660e： CHANNEL_NAME：\u901a\u9053\u540d\u79f0\u3002\u7ec4\u590d\u5236\u63d2\u4ef6\u521b\u5efa\u4e24\u4e2a\u590d\u5236\u901a\u9053： group_replication_recovery：\u7528\u4e8e\u4e0e\u5206\u5e03\u5f0f\u6062\u590d\u9636\u6bb5\u76f8\u5173\u7684\u590d\u5236\u66f4\u6539\u3002 \u200b group_replication_applier：\u7528\u4e8e\u6765\u81ea\u7ec4\u4f20\u5165\u7684\u66f4\u6539，\u662f\u5e94\u7528\u76f4\u63a5\u6765\u81ea\u7ec4\u7684\u4e8b\u52a1\u7684\u901a\u9053\u3002 MEMBER_ID：\u7ec4\u6210\u5458\u5b9e\u4f8b\u7684server_uuid\u3002 MEMBER_HOST：\u7ec4\u6210\u5458\u4e3b\u673a\u540d\u3002\u5982\u679c\u914d\u7f6e\u4e86report_host\u53c2\u6570，\u8fd9\u91cc\u663e\u793aIP\u5730\u5740\u3002 MEMBER_ROLE：\u6210\u5458\u89d2\u8272，\u4e3b\u4e3aPRIMARY，\u4ece\u4e3aSECONDARY\u3002 MEMBER_VERSION：\u6210\u5458\u6570\u636e\u5e93\u5b9e\u4f8b\u7248\u672c\u3002 MEMBER_STATE：\u6210\u5458\u72b6\u6001，\u53d6\u503c\u548c\u542b\u4e49\u5982\u4e0b\u6240\u793a： \u200b ONLINE \u8868\u793a\u8be5\u6210\u5458\u53ef\u6b63\u5e38\u63d0\u4f9b\u670d\u52a1 \u200b RECOVERING \u8868\u793a\u5f53\u524d\u6210\u5458\u6b63\u5728\u4ece\u5176\u5b83\u8282\u70b9\u6062\u590d\u6570\u636e \u200b OFFLINE \u8868\u793a\u7ec4\u590d\u5236\u63d2\u4ef6\u5df2\u7ecf\u52a0\u8f7d，\u4f46\u662f\u8be5\u6210\u5458\u4e0d\u5c5e\u4e8e\u4efb\u4f55\u4e00\u4e2a\u590d\u5236\u7ec4 \u200b ERROR \u8868\u793a\u6210\u5458\u5728recovery\u9636\u6bb5\u51fa\u73b0\u9519\u8bef\u6216\u8005\u4ece\u5176\u5b83\u8282\u70b9\u540c\u6b65\u72b6\u6001\u4e2d\u51fa\u73b0\u9519\u8bef \u200b UNREACHABLE \u6210\u5458\u5904\u4e8e\u4e0d\u53ef\u8fbe\u72b6\u6001，\u65e0\u6cd5\u4e0e\u4e4b\u8fdb\u884c\u7f51\u7edc\u901a\u8baf<\/p>\n

（3）\u4ece\u4e0a\u7684\u914d\u7f6e<\/p>\n

#1）\u5728\u4ece\u4e0a\u5199\u914d\u7f6e\u6587\u4ef6
\n[root@rep1 ~]# vim \/etc\/my.cnf
\n[mysqld]
\ndatadir=\/data\/mysql
\nsocket=\/data\/mysql\/mysql.sock
\nlog_timestamps=SYSTEM
\nserver_id=129
\ndisabled_storage_engines="MyISAM,BLACKHOLE,FEDERATED,ARCHIVE,MEMORY"
\ngtid_mode=ON
\nenforce_gtid_consistency=ON
\nplugin_load_add='group_replication.so'
\ngroup_replication_group_name="aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa"
\ngroup_replication_start_on_boot=off
\ngroup_replication_local_address="192.168.168.129:33061"
\ngroup_replication_group_seeds="192.168.168.128:33061,192.168.168.129:33061,192.168.168.130:33061"
\ngroup_replication_ip_whitelist="192.168.168.0\/24,127.0.0.1\/8"
\ngroup_replication_bootstrap_group=off
\ngroup_replication_recovery_use_ssl=on
\n[root@rep1 ~]# \/etc\/init.d\/mysqld restart
\n\u200b
\n[root@rep2 ~]# vim \/etc\/my.cnf
\n[mysqld]
\ndatadir=\/data\/mysql
\nsocket=\/data\/mysql\/mysql.sock
\nlog_timestamps=SYSTEM
\nserver_id=130
\ndisabled_storage_engines="MyISAM,BLACKHOLE,FEDERATED,ARCHIVE,MEMORY"
\ngtid_mode=ON
\nenforce_gtid_consistency=ON
\nplugin_load_add='group_replication.so'
\ngroup_replication_group_name="aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa"
\ngroup_replication_start_on_boot=off
\ngroup_replication_local_address="192.168.168.130:33061"
\ngroup_replication_group_seeds="192.168.168.128:33061,192.168.168.129:33061,192.168.168.130:33061"
\ngroup_replication_ip_whitelist="192.168.168.0\/24,127.0.0.1\/8"
\ngroup_replication_bootstrap_group=off
\ngroup_replication_recovery_use_ssl=on
\n#2）\u5728\u6240\u6709\u4ece\u7684\u6570\u636e\u5e93\u4e2d\u4f7f\u7528sql\u8bed\u53e5\u6dfb\u52a0\u590d\u5236\u8d26\u53f7\u5e76\u6388\u4e88\u6743\u9650，\u4ece\u4e0a\u9762\u4e5f\u9700\u8981\u8bbe\u7f6e\u4e00\u6837\u7684\u8d26\u53f7
\nSET SQL_LOG_BIN=0;
\nCREATE USER rp@'%' IDENTIFIED BY '123';
\nGRANT REPLICATION SLAVE ON *.* TO rp@'%';
\nGRANT CONNECTION_ADMIN ON *.* TO rp@'%';
\nGRANT BACKUP_ADMIN ON *.* TO rp@'%';
\nGRANT GROUP_REPLICATION_STREAM ON *.* TO rp@'%';
\nFLUSH PRIVILEGES;
\nSET SQL_LOG_BIN=1;
\nCHANGE REPLICATION SOURCE TO SOURCE_USER='rp', SOURCE_PASSWORD='123' FOR CHANNEL 'group_replication_recovery';
\n\u200b
\n#3）\u5f00\u542f\u7ec4\u590d\u5236
\nmysql> START GROUP_REPLICATION USER='rp', PASSWORD='123';
\n#\u67e5\u770b\u7ec4\u4fe1\u606f
\nmysql> SELECT * FROM performance_schema.replication_group_members; <\/p>\n

（4）\u9a8c\u8bc1\u7ed3\u679c<\/p>\n

#\u5728\u4e3b\u5e93\u8282\u70b9\u6570\u636e\u5e93\u4e0a\u6267\u884c
\nmysql> create database test;
\nmysql> use test
\n#\u5fc5\u987b\u8bbe\u7f6e\u4e3b\u952e，\u4e0d\u7136\u65e0\u6cd5\u63d2\u5165\u6570\u636e
\nmysql> create table t1(id int primary key,name char(30));
\nmysql> insert into t1 values (1,'xiaoming');
\n\u200b
\n#\u5728\u4e09\u4e2a\u8282\u70b9\u5747\u53ef\u4ee5\u67e5\u770b\u5230\u65b0\u589e\u4fe1\u606f
\nmysql> select * from test.t1;
\n+—-+———-+
\n| id | name \u00a0 \u00a0 |
\n+—-+———-+
\n| \u00a01 | xiaoming |
\n+—-+———-+
\n1 row in set (0.00 sec)
\n#\u5728\u4ece\u8282\u70b9\u6d4b\u8bd5\u5199\u5165，\u9a8c\u8bc1\u4e0d\u652f\u6301\u5199\u5165\u64cd\u4f5c
\nmysql> insert into test.t1 values (2,'xiaohong');
\nERROR 1290 (HY000): The MySQL server is running with the –super-read-only option so it cannot execute this statement
\n\u200b
\n#\u6d4b\u8bd5\u4e3b\u8282\u70b9\u5b95\u673a
\nmysql> stop GROUP_REPLICATION;
\n#\u4ece\u5e93\u8282\u70b9\u67e5\u770b，\u53d1\u73b0\u4ec5\u52692\u4e2a\u8282\u70b9，\u5e76\u4e14\u81ea\u52a8\u9009\u4e3e\u51fa\u4e3b\u8282\u70b9
\nmysql> SELECT * FROM performance_schema.replication_group_members;
\n#\u5728\u91cd\u65b0\u9009\u4e3e\u51fa\u6765\u7684rep1\u4e0a\u6d4b\u8bd5\u63d2\u5165\u6570\u636e
\nmysql> insert into test.t1 values (3,'xiaohei');
\n\u200b
\nmysql> select * from test.t1;
\n+—-+———-+
\n| id | name \u00a0 \u00a0 |
\n+—-+———-+
\n| \u00a01 | xiaoming |
\n| \u00a03 | xiaohei |
\n+—-+———-+
\n2 rows in set (0.00 sec)
\n\u200b
\n#\u91cd\u65b0\u542f\u52a8\u524d\u9762\u7684master\u4e3b\u8282\u70b9，\u53ef\u4ee5\u770b\u5230master\u5df2\u7ecf\u4f5c\u4e3a\u4ece\u8282\u70b9\u52a0\u5165\u5230\u7fa4\u7ec4\u4e2d
\nmysql> START GROUP_REPLICATION;
\nQuery OK, 0 rows affected, 1 warning (10.73 sec)
\n\u200b
\nmysql> SELECT * FROM performance_schema.replication_group_members; <\/p>\n

2.1.4 \u5b9e\u73b0mysql\u7ec4\u590d\u5236-\u591a\u4e3b\u6a21\u5f0f<\/h4>\n

#\u4fee\u6539\u6240\u6709\u7684my.cnf\u7684\u914d\u7f6e\u6587\u4ef6，\u6dfb\u52a0\u5982\u4e0b\u5185\u5bb9
\n#\u5173\u95ed\u5355master\u6a21\u5f0f
\nloose-group_replication_single_primary_mode=off
\n#\u591a\u4e3b\u4e00\u81f4\u6027\u68c0\u67e5
\nloose-group_replication_enforce_update_everywhere_checks=ON
\n[root@master mysql]# \/etc\/init.d\/mysqld restart
\n\u200b
\n#\u5728\u5176\u4e2d\u4e00\u53f0\u4e3b\u673a\u91cc\u9762\u6267\u884c\u4ee5\u4e0bmysql\u547d\u4ee4
\nSET GLOBAL group_replication_bootstrap_group=ON;
\nSTART GROUP_REPLICATION;
\nSET GLOBAL group_replication_bootstrap_group=OFF;
\n#\u5728\u53e6\u5916\u4e24\u53f0\u4e3b\u673a\u91cc\u9762\u6267\u884c\u4ee5\u4e0bmysql\u547d\u4ee4，\u5f00\u542f\u7ec4\u590d\u5236
\nmysql> START GROUP_REPLICATION;
\nmysql> SELECT * FROM performance_schema.replication_group_members;
\n#\u5728\u4e09\u4e2a\u4e3b\u673a\u4e0a\u9762\u5206\u522b\u6267\u884c\u4ee5\u4e0b\u4e09\u6761\u547d\u4ee4\u6d4b\u8bd5\u662f\u5426\u90fd\u53ef\u4ee5\u6267\u884c\u5199\u5165\u64cd\u4f5c
\nmysql> insert test.t1 values (4,'xiaolan');
\nmysql> insert test.t1 values ('5','xiaozi');
\nmysql> insert test.t1 values (6,'xiaohei');
\nmysql> select * from test.t1;
\n+—-+———-+
\n| id | name \u00a0 \u00a0 |
\n+—-+———-+
\n| \u00a01 | xiaoming |
\n| \u00a03 | xiaohei \u00a0|
\n| \u00a04 | xiaolan \u00a0|
\n| \u00a05 | xiaozi \u00a0 |
\n| \u00a06 | xiaohei \u00a0|
\n+—-+———-+ <\/p>\n

2.2 MHA\u9ad8\u53ef\u7528\u67b6\u6784<\/h3>\n

2.2.1 \u4ecb\u7ecd<\/h4>\n

MHA（Master HA）\u662f\u4e00\u6b3e\u5f00\u6e90\u7684 MySQL \u7684\u9ad8\u53ef\u7528\u7a0b\u5e8f，\u5b83\u4e3a MySQL \u4e3b\u4ece\u590d\u5236\u67b6\u6784\u63d0\u4f9b\u4e86automating master failover \u529f\u80fd\u3002MHA \u5728\u76d1\u63a7\u5230 master \u8282\u70b9\u6545\u969c\u65f6，\u4f1a\u63d0\u5347\u5176\u4e2d\u62e5\u6709\u6700\u65b0\u6570\u636e\u7684slave \u8282\u70b9\u6210\u4e3a\u65b0\u7684master \u8282\u70b9，\u5728\u6b64\u671f\u95f4，MHA \u4f1a\u901a\u8fc7\u5176\u5b83\u4ece\u8282\u70b9\u83b7\u53d6\u989d\u5916\u4fe1\u606f\u6765\u907f\u514d\u4e00\u81f4\u6027\u65b9\u9762\u7684\u95ee\u9898\u3002MHA \u8fd8\u63d0\u4f9b\u4e86 master \u8282\u70b9\u7684\u5728\u7ebf\u5207\u6362\u529f\u80fd，\u5373\u6309\u9700\u5207\u6362 master\/slave \u8282\u70b9\u3002 MHA \u662f\u7531\u65e5\u672c\u4eba yoshinorim（\u539f\u5c31\u804c\u4e8eDeNA\u73b0\u5c31\u804c\u4e8eFaceBook）\u5f00\u53d1\u7684\u6bd4\u8f83\u6210\u719f\u7684 MySQL \u9ad8\u53ef\u7528\u65b9\u6848\u3002MHA \u80fd\u591f\u572830\u79d2\u5185\u5b9e\u73b0\u6545\u969c\u5207\u6362，\u5e76\u80fd\u5728\u6545\u969c\u5207\u6362\u4e2d，\u6700\u5927\u53ef\u80fd\u7684\u4fdd\u8bc1\u6570\u636e\u4e00\u81f4\u6027\u3002<\/p>\n

MHA \u670d\u52a1\u6709\u4e24\u79cd\u89d2\u8272， MHA Manager(\u7ba1\u7406\u8282\u70b9)\u548c MHA Node(\u6570\u636e\u8282\u70b9)： MHA Manager：\u901a\u5e38\u5728\u4e00\u53f0\u72ec\u7acb\u7684\u673a\u5668\u4e0a\u7ba1\u7406\u591a\u4e2amaster-slave\u96c6\u7fa4，\u4e5f\u53ef\u4ee5\u90e8\u7f72\u5728\u4e00\u53f0slave\u8282\u70b9\u4e0a\u3002 MHA node：MHA Node\u8fd0\u884c\u5728\u6bcf\u53f0MySQL\u670d\u52a1\u5668\u4e0a，MHA Manager\u4f1a\u5b9a\u65f6\u63a2\u6d4b\u96c6\u7fa4\u4e2d\u7684master\u8282\u70b9，\u5f53master\u51fa\u73b0\u6545\u969c\u65f6，\u5b83\u53ef\u4ee5\u81ea\u52a8\u5c06\u6700\u65b0\u6570\u636e\u7684slave\u63d0\u5347\u4e3a\u65b0\u7684master，\u7136\u540e\u5c06\u6240\u6709\u5176\u4ed6\u7684slave\u91cd\u65b0\u6307\u5411\u65b0\u7684master\u3002\u6574\u4e2a\u6545\u969c\u8f6c\u79fb\u8fc7\u7a0b\u5bf9\u5e94\u7528\u7a0b\u5e8f\u5b8c\u5168\u900f\u660e\u3002<\/p>\n

MHA\u5de5\u4f5c\u539f\u7406：<\/p>\n

    \n
  • \n

    \u76ee\u524dMHA\u4e3b\u8981\u652f\u6301\u4e00\u4e3b\u591a\u4ece\u7684\u67b6\u6784，\u8981\u642d\u5efaMHA，\u8981\u6c42\u4e00\u4e2a\u590d\u5236\u96c6\u7fa4\u5fc5\u987b\u6700\u5c11\u67093\u53f0\u6570\u636e\u5e93\u670d\u52a1\u5668，\u4e00\u4e3b\u4e8c\u4ece，\u5373\u4e00\u53f0\u5145\u5f53Master，\u4e00\u53f0\u5145\u5f53\u5907\u7528Master，\u4e00\u53f0\u5145\u5f53\u4ece\u5e93\u3002<\/p>\n<\/li>\n

  • \n

    MHA Node \u8fd0\u884c\u5728\u6bcf\u53f0 MySQL \u670d\u52a1\u5668\u4e0a\u3002<\/p>\n<\/li>\n

  • \n

    MHAManager \u4f1a\u5b9a\u65f6\u63a2\u6d4b\u96c6\u7fa4\u4e2d\u7684master \u8282\u70b9\u3002<\/p>\n<\/li>\n

  • \n

    \u5f53master \u51fa\u73b0\u6545\u969c\u65f6，\u5b83\u53ef\u4ee5\u81ea\u52a8\u5c06\u6700\u65b0\u6570\u636e\u7684slave \u63d0\u5347\u4e3a\u65b0\u7684master<\/p>\n<\/li>\n

  • \n

    \u7136\u540e\u5c06\u6240\u6709\u5176\u4ed6\u7684slave \u91cd\u65b0\u6307\u5411\u65b0\u7684master，VIP\u81ea\u52a8\u6f02\u79fb\u5230\u65b0\u7684master\u3002<\/p>\n<\/li>\n

  • \n

    \u6574\u4e2a\u6545\u969c\u8f6c\u79fb\u8fc7\u7a0b\u5bf9\u5e94\u7528\u7a0b\u5e8f\u5b8c\u5168\u900f\u660e\u3002<\/p>\n<\/p>\n<\/li>\n<\/ul>\n

    2.2.2 \u5b9e\u73b0\u8fc7\u7a0b<\/h4>\n

    （1）\u73af\u5883\u8bf4\u660e<\/p>\n\n\u673a\u5668\u540d\u79f0IP\u914d\u7f6e\u64cd\u4f5c\u7cfb\u7edf\u7248\u672c\/\u6570\u636e\u5e93\u7248\u672c\u8bf4\u660e<\/tr>\n\n\n\n\n\n
    mha-manager<\/td>\n192.168.168.200<\/td>\nrhel7.9<\/td>\nmanager\u63a7\u5236\u5668<\/td>\n<\/tr>\n
    master<\/td>\n192.168.168.128<\/td>\nrhel7.9\/mysql8.0.40<\/td>\n\u6570\u636e\u5e93\u4e3b\u670d\u52a1\u5668<\/td>\n<\/tr>\n
    rep1<\/td>\n192.168.168.129<\/td>\nrhel7.9\/mysql8.0.40<\/td>\n\u6570\u636e\u5e93\u4ece\u670d\u52a1\u5668<\/td>\n<\/tr>\n
    rep2<\/td>\n192.168.168.130<\/td>\nrhel7.9\/mysql8.0.40<\/td>\n\u6570\u636e\u5e93\u4ece\u670d\u52a1\u5668<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
    2.2.2.1 \u51c6\u5907\u5de5\u4f5c<\/h5>\n

    （1）\u521d\u59cb\u5316\u4e3b\u8282\u70b9master\u7684\u914d\u7f6e：<\/p>\n

    [root@master mysql]# cat \/etc\/my.cnf
    \n[mysqld]
    \ndatadir=\/data\/mysql
    \nsocket=\/data\/mysql\/mysql.sock
    \nserver_id=128 \u00a0 #\u96c6\u7fa4\u4e2d\u7684\u5404\u8282\u70b9\u7684id\u5fc5\u987b\u552f\u4e00
    \ngtid-mode=on \u00a0#\u542f\u7528gtid\u7c7b\u578b
    \nenforce-gtid-consistency=true \u00a0#\u5f3a\u5236GTID\u4e00\u81f4\u6027
    \nlog-bin=binlog \u00a0#\u5f00\u542f\u4e8c\u8fdb\u5236\u65e5\u5fd7
    \nrelay-log=relay-log \u00a0#\u5f00\u542f\u4e2d\u7ee7\u65e5\u5fd7
    \nrelay_log_purge=0 \u00a0#\u662f\u5426\u81ea\u52a8\u6e05\u7a7a\u4e0d\u518d\u9700\u8981\u7684\u4e2d\u7ee7\u65e5\u5fd7
    \nlog-slave-updates=true \u00a0#slave\u66f4\u65b0\u7684\u4fe1\u606f\u662f\u5426\u8bb0\u5165\u4e8c\u8fdb\u5236\u65e5\u5fd7\u4e2d
    \n[root@master mysql]# \/etc\/init.d\/mysqld start <\/p>\n

    （2）\u521d\u59cb\u5316slave1\u548cslave2\u8282\u70b9：<\/p>\n

    [root@rep1 mysql]# cat \/etc\/my.cnf
    \n[mysqld]
    \ndatadir=\/data\/mysql
    \nsocket=\/data\/mysql\/mysql.sock
    \nserver_id=129
    \ngtid-mode=on \u00a0
    \nenforce-gtid-consistency=true \u00a0
    \nlog-bin=binlog
    \nrelay-log=relay-log
    \nrelay_log_purge=0
    \nlog-slave-updates=true
    \n[root@rep1 mysql]# \/etc\/init.d\/mysqld start
    \n[root@slave2 ~]# cat \/etc\/my.cnf
    \n[mysqld]
    \ndatadir=\/data\/mysql
    \nsocket=\/data\/mysql\/mysql.sock
    \nserver_id=130
    \ngtid-mode=on \u00a0
    \nenforce-gtid-consistency=true
    \nlog-bin=mysql-bin
    \nrelay-log=relay-log
    \nrelay_log_purge=0
    \nlog-slave-updates=true
    \n[root@rep2 mysql]# \/etc\/init.d\/mysqld start <\/p>\n

    （3）\u914d\u7f6e\u4e00\u4e3b\u591a\u4ece\u590d\u5236\u67b6\u6784：<\/p>\n

    ###master\u8282\u70b9\u4e0a,mha\u53ea\u652f\u6301mysql_native_password\u5bc6\u7801\u8ba4\u8bc1\u63d2\u4ef6
    \nmysql> create user 'rep'@'%' identified WITH mysql_native_password by '123';
    \nmysql> grant replication slave on *.* to 'rep'@'%';
    \n###slave1\u548cslave2\u8282\u70b9\u4e0a
    \nmysql> CHANGE REPLICATION SOURCE TO
    \nSOURCE_HOST='192.168.168.128',
    \nSOURCE_USER='rep',
    \nSOURCE_PASSWORD='123',
    \nmaster_auto_position=1,
    \nSOURCE_SSL=1;
    \nmysql> start replica;
    \nmysql> show replica status \\\\G
    \n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Replica_IO_Running: Yes
    \n \u00a0 \u00a0 \u00a0 \u00a0 Replica_SQL_Running: Yes
    \n\u200b <\/p>\n

    2.2.2.2 \u914d\u7f6eMHA<\/h5>\n

    \u5b89\u88c5MHA\u5305，\u4e0b\u8f7d\u5730\u5740：<\/p>\n

    https:\/\/code.google.com\/archive\/p\/mysql-master-ha\/<\/p>\n

    github\u4e0b\u8f7d\u5730\u5740：<\/p>\n

    Release mha4mysql-manager-0.58 \u00b7 yoshinorim\/mha4mysql-manager \u00b7 GitHub<\/p>\n

    Release mha4mysql-node-0.58 \u00b7 yoshinorim\/mha4mysql-node \u00b7 GitHub<\/p>\n

    #mha-manager\u4e0a\u5b89\u88c5\u8f6f\u4ef6\u5305
    \n[root@mha-manager ~]# wget https:\/\/github.com\/yoshinorim\/mha4mysql-manager\/releases\/download\/v0.58\/mha4mysql-manager-0.58-0.el7.centos.noarch.rpm
    \n[root@manager ~]# wget https:\/\/github.com\/yoshinorim\/mha4mysql-node\/releases\/download\/v0.58\/mha4mysql-node-0.58-0.el7.centos.noarch.rpm
    \n#\u5982\u679c\u4f7f\u7528\u4e0a\u9762\u7684\u547d\u4ee4\u4e0b\u8f7d\u4e0d\u4e0b\u6765\u53ef\u4ee5\u4f7f\u7528\u8001\u5e08\u63d0\u4f9b\u7684\u5305
    \n[root@mha-manager ~]# ls MHA-7.zip
    \nMHA-7.zip
    \n[root@mha-manager ~]# yum install unzip -y
    \n[root@mha-manager ~]# unzip MHA-7.zip
    \n[root@mha-manager ~]# cd MHA-7\/
    \n[root@mha-manager MHA-7]# ls
    \nmha4mysql-manager-0.58-0.el7.centos.noarch.rpm
    \nmha4mysql-node-0.58-0.el7.centos.noarch.rpm
    \nperl-Config-Tiny-2.14-7.el7.noarch.rpm
    \nperl-Email-Date-Format-1.002-15.el7.noarch.rpm
    \nperl-Log-Dispatch-2.41-1.el7.1.noarch.rpm
    \nperl-Mail-Sender-0.8.23-1.el7.noarch.rpm
    \nperl-Mail-Sendmail-0.79-21.el7.noarch.rpm
    \nperl-MIME-Lite-3.030-1.el7.noarch.rpm
    \nperl-MIME-Types-1.38-2.el7.noarch.rpm
    \nperl-Net-Telnet-3.03-19.el7.noarch.rpm
    \nperl-Parallel-ForkManager-1.18-2.el7.noarch.rpm
    \n[root@mha-manager MHA-7]# yum localinstall *.rpm
    \n#\u6240\u6709\u4e3b\u673a\u4e0a\u914d\u7f6e\u81ea\u89e3\u6790\u57df\u540d
    \n[root@mha-manager MHA-7]# cat \/etc\/hosts
    \n192.168.168.128 master
    \n192.168.168.129 rep1
    \n192.168.168.130 rep2
    \n192.168.168.200 mha-manager
    \n##\u5176\u4ed6\u4e09\u4e2amysql\u670d\u52a1\u5668\u4e0a\u5b89\u88c5mha4mysql-node\u5373\u53ef，\u590d\u5236mha4mysql-node\u5230\u6240\u6709\u6570\u636e\u5e93\u670d\u52a1\u5668
    \n[root@mha-manager MHA-7]# for i in {master,rep1,rep2};do scp mha4mysql-node-0.58-0.el7.centos.noarch.rpm root@$i:\/root;done
    \n#\u6240\u6709\u6570\u636e\u5e93\u4e0a\u5b89\u88c5mha4mysql-node
    \n[root@master ~]# yum localinstall mha4mysql-node-0.58-0.el7.centos.noarch.rpm
    \n#\u8bbe\u7f6e\u53ef\u4ee5\u8fdc\u7a0b\u8bbf\u95eemysql\u7684\u7528\u6237，\u5e76\u8bbe\u7f6e\u7ba1\u7406\u5458\u6743\u9650\u3002
    \n#\u53ea\u9700\u8981\u5728master\u4e0a\u8fd0\u884c\u5373\u53ef
    \ncreate user 'mhaadm'@'%' identified WITH mysql_native_password by '123';
    \ngrant all on *.* to 'mhaadm'@'%'; <\/p>\n

    MHA\u96c6\u7fa4\u4e2d\u7684\u5404\u8282\u70b9\u5f7c\u6b64\u4e4b\u95f4\u5747\u9700\u8981\u57fa\u4e8essh\u4e92\u4fe1\u901a\u4fe1，\u4ee5\u5b9e\u73b0\u8fdc\u7a0b\u63a7\u5236\u53ca\u6570\u636e\u7ba1\u7406\u529f\u80fd\u3002<\/p>\n

    #\u6240\u6709\u8282\u70b9\u751f\u6210\u516c\u79c1\u94a5
    \nssh-keygen -f \/root\/.ssh\/id_rsa -P '' -q
    \n#\u5c06\u6240\u6709\u8282\u70b9\u7684\u516c\u94a5\u4e0a\u4f20\u81f3manager\u8282\u70b9，\u6700\u540e\u5c06manager\u8282\u70b9\u7684authorized_keys\u5206\u53d1\u5230\u5176\u4ed6\u8282\u70b9
    \n[root@master ~]# ssh-copy-id root@mha-manager
    \n[root@rep1 ~]# ssh-copy-id root@mha-manager
    \n[root@rep2 ~]# ssh-copy-id root@mha-manager
    \n[root@mha-manager ~]# ssh-copy-id root@mha-manager
    \n\u200b
    \n[root@mha-manager ~]# for i in {master,rep1,rep2};do scp \/root\/.ssh\/authorized_keys root@$i:\/root\/.ssh;done
    \n\u200b
    \n\u200b
    \n#\u9a8c\u8bc1
    \n[root@mha-manager ~]# for i in {master,rep1,rep2};do ssh $i hostname ;done
    \nmaster
    \nrep1
    \nrep2 <\/p>\n

    Manager \u8282\u70b9\u9700\u8981\u4e3a\u6bcf\u4e2a\u76d1\u63a7\u7684 master\/slave \u96c6\u7fa4\u63d0\u4f9b\u4e00\u4e2a\u4e13\u7528\u7684\u914d\u7f6e\u6587\u4ef6，\u800c\u6240\u6709\u7684master\/slave \u96c6\u7fa4\u4e5f\u53ef\u5171\u4eab\u5168\u5c40\u914d\u7f6e\u3002\u5168\u5c40\u914d\u7f6e\u6587\u4ef6\u9ed8\u8ba4\u4e3a \/etc\/masterha_default.cnf ，\u5176\u4e3a\u53ef\u9009\u914d\u7f6e\u3002\u5982\u679c\u4ec5\u76d1\u63a7\u4e00\u7ec4 master\/slave \u96c6\u7fa4，\u4e5f\u53ef\u76f4\u63a5\u901a\u8fc7 application \u7684\u914d\u7f6e\u6765\u63d0\u4f9b\u5404\u670d\u52a1\u5668\u7684\u9ed8\u8ba4\u914d\u7f6e\u4fe1\u606f\u3002\u800c\u6bcf\u4e2a application \u7684\u914d\u7f6e\u6587\u4ef6\u8def\u5f84\u4e3a\u81ea\u5b9a\u4e49\u3002<\/p>\n

    #\u5728manager\u4e0a\u521b\u5efa\u914d\u7f6e\u6587\u4ef6\u76ee\u5f55
    \n[root@mha-manager ~]# mkdir \u00a0 -p \/etc\/mha \/var\/log\/mha\/app1
    \n[root@mha-manager ~]# vim \/etc\/mha\/app1.cnf
    \n[server default] \u00a0 #\u9002\u7528\u4e8eserver1，2，3\u4e2aserver\u7684\u914d\u7f6e
    \nuser=mhaadm \u00a0 \u00a0#mha\u7ba1\u7406\u7528\u6237
    \npassword=123 \u00a0#mha\u7ba1\u7406\u7528\u6237\u5bc6\u7801
    \nmanager_workdir=\/var\/log\/mha\/app1 \u00a0#mha\u7684\u5de5\u4f5c\u8def\u5f84
    \nmanager_log=\/var\/log\/mha\/app1\/manager.log \u00a0#mha\u7684\u65e5\u5fd7\u6587\u4ef6
    \nssh_user=root \u00a0#\u57fa\u4e8essh\u7684\u79d8\u94a5\u8ba4\u8bc1
    \nrepl_user=rep \u00a0#\u4e3b\u4ece\u590d\u5236\u7684\u8d26\u53f7
    \nrepl_password=123
    \nping_interval=1 \u00a0#ping\u95f4\u9694\u65f6\u957f
    \n[server1] \u00a0 #mysql\u4e3b\u673a\u4fe1\u606f
    \nhostname=192.168.168.128
    \nssh_port=22
    \ncandidate_master=1 \u00a0#\u8bbe\u7f6e\u8be5\u4e3b\u673a\u5c06\u6765\u53ef\u80fd\u6210\u4e3amaster\u5019\u9009\u8282\u70b9
    \n[server2]
    \nhostname=192.168.168.129
    \nssh_port=22
    \ncandidate_master=1
    \n[server3]
    \nhostname=192.168.168.130
    \nssh_port=22
    \nno_master=1 <\/p>\n

    \u8f93\u5165\u5982\u4e0b\u547d\u4ee4\u68c0\u6d4b\u5404\u8282\u70b9\u95f4ssh\u4e92\u4fe1\u901a\u4fe1\u914d\u7f6e\u662f\u5426ok<\/p>\n

    [root@mha-manager ~]# masterha_check_ssh –conf=\/etc\/mha\/app1.cnf <\/p>\n

    \u68c0\u67e5mysql\u590d\u5236\u96c6\u7fa4\u7684\u8fde\u63a5\u914d\u7f6e\u53c2\u6570\u662f\u5426ok<\/p>\n

    [root@mha-manager ~]# masterha_check_repl –conf=\/etc\/mha\/app1.cnf <\/p>\n

    2.2.3 MHA\u7684\u6545\u969c\u5207\u6362<\/h4>\n

    master\u6545\u969c\u624b\u52a8\u5207\u6362<\/p>\n

    #\u6a21\u62dfmaster\u6545\u969c
    \n[root@master mysql]# \/etc\/init.d\/mysqld stop
    \n\u200b
    \n#\u5728mha-manager\u4e2d\u505a\u6545\u969c\u5207\u6362
    \n[root@mha-manager ~]# masterha_master_switch –master_state=dead –conf=\/etc\/mha\/app1.cnf –dead_master_host=192.168.168.128 –dead_master_port=3306 –new_master_host=192.168.168.129 –new_master_port=3306 –ignore_last_failover
    \n….\u7701\u7565\u90e8\u5206\u8f93\u51fa….
    \nMaster failover to 192.168.168.129(192.168.168.129:3306) completed successfully.
    \n\u200b
    \n\u200b
    \n#–ignore_last_failover \u8868\u793a\u5ffd\u7565\u5728\/var\/log\/mha\/app1\/\u76ee\u5f55\u4e2d\u5728\u5207\u6362\u8fc7\u7a0b\u4e2d\u751f\u6210\u7684\u9501\u6587\u4ef6
    \n\u200b <\/p>\n

    \u6062\u590d\u6545\u969cmysql\u8282\u70b9<\/p>\n

    [root@master mysql]# \/etc\/init.d\/mysqld start
    \n#\u5c06\u8be5\u4e3b\u673a\u91cd\u65b0\u52a0\u5165\u96c6\u7fa4\u4e2d
    \nmysql> CHANGE REPLICATION SOURCE TO
    \nSOURCE_HOST='192.168.168.129',
    \nSOURCE_USER='rep',
    \nSOURCE_PASSWORD='123',
    \nmaster_auto_position=1,
    \nSOURCE_SSL=1;
    \nQuery OK, 0 rows affected, 3 warnings (0.00 sec)
    \n\u200b
    \nmysql> start replica;
    \nQuery OK, 0 rows affected (0.01 sec)
    \n\u200b
    \nmysql> show replica status\\\\G
    \n*************************** 1. row ***************************
    \n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Replica_IO_State: Waiting for source to send event
    \n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Source_Host: 192.168.168.129
    \n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Source_User: rep
    \n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Source_Port: 3306
    \n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Connect_Retry: 60
    \n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Source_Log_File: binlog.000003
    \n \u00a0 \u00a0 \u00a0 \u00a0 Read_Source_Log_Pos: 1249
    \n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Relay_Log_File: relay-log.000003
    \n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Relay_Log_Pos: 451
    \n \u00a0 \u00a0 \u00a0 Relay_Source_Log_File: binlog.000003
    \n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Replica_IO_Running: Yes
    \n \u00a0 \u00a0 \u00a0 \u00a0 Replica_SQL_Running: Yes <\/p>\n

    \u542f\u52a8mha，\u4f7fmsyql\u6545\u969c\u540e\u81ea\u52a8\u5207\u6362<\/p>\n

    #\u5220\u9664\u9501\u6587\u4ef6，\u5982\u679c\u4e0d\u5220\u9664\u7684\u8bddmha\u65e0\u6cd5\u6545\u969c\u8f6c\u79fb\u6210\u529f
    \n[root@mha-manager ~]# rm -rf \/var\/log\/mha\/app1\/app1.failover.complete
    \n#\u542f\u52a8mha\u3002\u53ef\u4ee5\u4f7f\u7528–ignore_last_failover\u9009\u9879\u9009\u62e9\u5ffd\u7565\u9501\u6587\u4ef6
    \n[root@mha-manager ~]# masterha_manager –conf=\/etc\/mha\/app1.cnf
    \n#\u67e5\u770bmha\u7684\u72b6\u6001
    \n[root@mha-manager ~]# masterha_check_status –conf=\/etc\/mha\/app1.cnf
    \napp1 (pid:2510) is running(0:PING_OK), master:192.168.168.129
    \n\u200b
    \n#\u6a21\u62df\u4e3bmysql\u5b95\u673a
    \n[root@rep1 ~]# \/etc\/init.d\/mysqld stop
    \n#\u6ce8\u610f：\u6545\u969c\u8f6c\u79fb\u5b8c\u6210\u540e，mha-manager\u5c06\u4f1a\u81ea\u52a8\u505c\u6b62\u8fd0\u884c
    \n#\u67e5\u770b\u8f6c\u79fb\u65e5\u5fd7
    \n[root@mha-manager ~]# cat \/var\/log\/mha\/app1\/manager.log
    \n—– Failover Report —–
    \n\u200b
    \napp1: MySQL Master failover 192.168.168.129(192.168.168.129:3306) to 192.168.168.128(192.168.168.128:3306) succeeded
    \n\u200b
    \nMaster 192.168.168.129(192.168.168.129:3306) is down!
    \n\u200b
    \nCheck MHA Manager logs at mha-manager:\/var\/log\/mha\/app1\/manager.log for details.
    \n\u200b
    \nStarted automated(non-interactive) failover.
    \nSelected 192.168.168.128(192.168.168.128:3306) as a new master.
    \n192.168.168.128(192.168.168.128:3306): OK: Applying all logs succeeded.
    \n192.168.168.130(192.168.168.130:3306): OK: Slave started, replicating from 192.168.168.128(192.168.168.128:3306)
    \n192.168.168.128(192.168.168.128:3306): Resetting slave info succeeded.
    \nMaster failover to 192.168.168.128(192.168.168.128:3306) completed successfully.
    \n#\u5728\u4ece192.168.168.130\u4e0a\u67e5\u770b\u5f53\u524d\u7684\u4e3b\u662f\u8c01，\u5df2\u7ecf\u6210\u529f\u5207\u6362\u5230192.168.168.128
    \nmysql> show replica status \\\\G
    \n*************************** 1. row ***************************
    \n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Replica_IO_State: Waiting for source to send event
    \n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Source_Host: 192.168.168.128
    \n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Source_User: rep
    \n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Source_Port: 3306
    \n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Connect_Retry: 60
    \n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Source_Log_File: binlog.000004
    \n \u00a0 \u00a0 \u00a0 \u00a0 Read_Source_Log_Pos: 523
    \n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Relay_Log_File: relay-log.000002
    \n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Relay_Log_Pos: 411
    \n \u00a0 \u00a0 \u00a0 Relay_Source_Log_File: binlog.000004
    \n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Replica_IO_Running: Yes
    \n \u00a0 \u00a0 \u00a0 \u00a0 Replica_SQL_Running: Yes
    \n\u200b
    \n#\u5220\u9664\u9501\u6587\u4ef6
    \n[root@mha-manager ~]# rm -rf \/var\/log\/mha\/app1\/app1.failover.complete
    \n#\u6062\u590d\u6545\u969c\u7684\u4ece
    \n[root@rep1 ~]# \/etc\/init.d\/mysqld start
    \nmysql> CHANGE REPLICATION SOURCE TO
    \nSOURCE_HOST='192.168.168.128',
    \nSOURCE_USER='rep',
    \nSOURCE_PASSWORD='123',
    \nmaster_auto_position=1,
    \nSOURCE_SSL=1;
    \nmysql> start replica;
    \n\u200b <\/p>\n

    2.2.4 \u914d\u7f6eVIP<\/h4>\n

    vip\u914d\u7f6e\u53ef\u4ee5\u91c7\u7528\u4e24\u79cd\u65b9\u5f0f，\u4e00\u79cd\u901a\u8fc7keepalived\u7684\u65b9\u5f0f\u7ba1\u7406\u865a\u62dfip\u7684\u6d6e\u52a8；\u53e6\u5916\u4e00\u79cd\u901a\u8fc7\u811a\u672c\u65b9\u5f0f\u542f\u52a8\u865a\u62dfip\u7684\u65b9\u5f0f (\u5373\u4e0d\u9700\u8981keepalived\u6216\u8005heartbeat\u7c7b\u4f3c\u7684\u8f6f\u4ef6)\u3002\u4e3a\u4e86\u9632\u6b62\u8111\u88c2\u53d1\u751f，\u63a8\u8350\u751f\u4ea7\u73af\u5883\u91c7\u7528\u811a\u672c\u7684\u65b9\u5f0f\u6765\u7ba1\u7406\u865a\u62dfip，\u800c\u4e0d\u662f\u4f7f\u7528keepalived\u6765\u5b8c\u6210\u3002<\/p>\n

    \u7f16\u5199\u811a\u672c<\/p>\n

    [root@mha-manager ~]# vim \/usr\/local\/bin\/master_ip_failover
    \n#!\/usr\/bin\/env perl
    \nuse strict;
    \nuse warnings FATAL => 'all';
    \nuse Getopt::Long;
    \nmy (
    \n \u00a0 \u00a0$command, $ssh_user, $orig_master_host, $orig_master_ip,
    \n \u00a0 \u00a0$orig_master_port, $new_master_host, $new_master_ip, $new_master_port
    \n);
    \n####\u6ce8\u610f\u6b64\u5904\u914d\u7f6e\u7684ip\u5730\u5740\u548c\u7f51\u5361\u540d\u79f0
    \nmy $vip = '192.168.168.88\/24';
    \nmy $ssh_start_vip = "\/sbin\/ip a add $vip dev ens32";
    \nmy $ssh_stop_vip = "\/sbin\/ip a del $vip dev ens32";
    \n\u200b
    \nGetOptions(
    \n \u00a0'command=s' => \\\\$command,
    \n \u00a0'ssh_user=s' => \\\\$ssh_user,
    \n \u00a0'orig_master_host=s' => \\\\$orig_master_host,
    \n \u00a0'orig_master_ip=s' => \\\\$orig_master_ip,
    \n \u00a0'orig_master_port=i' => \\\\$orig_master_port,
    \n \u00a0'new_master_host=s' => \\\\$new_master_host,
    \n \u00a0'new_master_ip=s' => \\\\$new_master_ip,
    \n \u00a0'new_master_port=i' => \\\\$new_master_port,
    \n);
    \n\u200b
    \nexit &main();
    \n\u200b
    \nsub main {
    \n print "\\\\n\\\\nIN SCRIPT TEST====$ssh_stop_vip==$ssh_start_vip===\\\\n\\\\n";
    \n \u00a0if ( $command eq "stop" || $command eq "stopssh" ) {
    \n \u00a0 my $exit_code = 1;
    \n \u00a0 eval {
    \n \u00a0 \u00a0 print "Disabling the VIP on old master: $orig_master_host \\\\n";
    \n \u00a0 \u00a0 &stop_vip();
    \n \u00a0 \u00a0 \u00a0$exit_code = 0;
    \n \u00a0 };
    \n \u00a0 \u00a0if ($@) {
    \n \u00a0 \u00a0 \u00a0 warn "Got Error: $@\\\\n";
    \n \u00a0 \u00a0 \u00a0 \u00a0exit $exit_code;
    \n \u00a0 }
    \n \u00a0 \u00a0exit $exit_code;
    \n \u00a0 }
    \n elsif ( $command eq "start" ) {
    \n \u00a0 my $exit_code = 10;
    \n \u00a0 eval {
    \n \u00a0 \u00a0 print "Enabling the VIP – $vip on the new master – $new_master_host
    \n\\\\n";
    \n \u00a0 \u00a0 &start_vip();
    \n \u00a0 \u00a0 \u00a0$exit_code = 0;
    \n \u00a0 };
    \n \u00a0 \u00a0if ($@) {
    \n \u00a0 \u00a0 warn $@;
    \n \u00a0 \u00a0 \u00a0exit $exit_code;
    \n \u00a0 }
    \n \u00a0 \u00a0exit $exit_code;
    \n }
    \n elsif ( $command eq "status" ) {
    \n \u00a0 print "Checking the Status of the script.. OK \\\\n";
    \n \u00a0 \u00a0exit 0;
    \n }
    \n \u00a0else {
    \n \u00a0 &usage();
    \n \u00a0 \u00a0exit 1;
    \n }
    \n}
    \nsub start_vip() {
    \n \u00a0`ssh $ssh_user\\\\@$new_master_host \\\\" $ssh_start_vip \\\\"`;
    \n}
    \nsub stop_vip() {
    \n return 0 unless ($ssh_user);
    \n \u00a0`ssh $ssh_user\\\\@$orig_master_host \\\\" $ssh_stop_vip \\\\"`;
    \n}
    \nsub usage {
    \n print "Usage: master_ip_failover –command=start|stop|stopssh|status –orig_master_host=host –orig_master_ip=ip –orig_master_port=port –new_master_host=host –new_master_ip=ip –new_master_port=port\\\\n";
    \n}
    \n\u200b
    \n[root@mha-manager ~]# chmod +x \/usr\/local\/bin\/master_ip_failover <\/p>\n

    \u66f4\u6539manager\u914d\u7f6e\u6587\u4ef6<\/p>\n

    [root@mha-manager ~]# vim \/etc\/mha\/app1.cnf
    \n[server default]
    \n#\u6dfb\u52a0\u5982\u4e0b\u4fe1\u606f
    \nmaster_ip_failover_script=\/usr\/local\/bin\/master_ip_failover <\/p>\n

    \u5728\u4e3b\u5e93\u4e0a\u624b\u52a8\u914d\u7f6e\u7b2c\u4e00\u6b21\u7684VIP\u5730\u5740<\/p>\n

    [root@master mysql]# ip a a 192.168.168.88\/24 dev ens32
    \n[root@master mysql]# ip a show ens32
    \n2: ens32: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    \n \u00a0 link\/ether 00:0c:29:d6:ad:c7 brd ff:ff:ff:ff:ff:ff
    \n \u00a0 inet 192.168.168.128\/24 brd 192.168.168.255 scope global noprefixroute ens32
    \n \u00a0 \u00a0 \u00a0 valid_lft forever preferred_lft forever
    \n \u00a0 inet 192.168.168.88\/24 scope global secondary ens32 <\/p>\n

    \u5728mha-manager\u4e0a\u542f\u52a8MHA<\/p>\n

    [root@mha-manager ~]# masterha_manager –conf=\/etc\/mha\/app1.cnf –ignore_last_failover <\/p>\n

    \u5728master\u8282\u70b9\u5173\u95edmysql\u670d\u52a1\u6a21\u62df\u4e3b\u8282\u70b9\u6570\u636e\u5d29\u6e83\u3002<\/p>\n

    [root@master mysql]# \/etc\/init.d\/mysqld stop <\/p>\n

    \u5728rep1\u4e0a\u67e5\u770bVIP<\/p>\n

    [root@rep1 ~]# ip a show ens32
    \n2: ens32: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    \n \u00a0 link\/ether 00:0c:29:f3:43:54 brd ff:ff:ff:ff:ff:ff
    \n \u00a0 inet 192.168.168.129\/24 brd 192.168.168.255 scope global noprefixroute ens32
    \n \u00a0 \u00a0 \u00a0 valid_lft forever preferred_lft forever
    \n \u00a0 inet 192.168.168.88\/24 scope global secondary ens32
    \n \u00a0 \u00a0 \u00a0 valid_lft forever preferred_lft forever
    \n \u00a0 inet6 fe80::104a:bcda:d57c:4ec5\/64 scope link tentative noprefixroute dadfailed \u00a0<\/p>\n","protected":false},"excerpt":{"rendered":"

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