\u4e00\u3001keepalived\u7b80\u4ecb<\/p>\n
keepalived\u662fLinux\u4e0b\u4e00\u4e2a\u8f7b\u91cf\u7ea7\u7684\u9ad8\u53ef\u7528\u89e3\u51b3\u65b9\u6848\uff0ckeepalived\u4e3b\u8981\u901a\u8fc7\u865a\u62df\u8def\u7531\u5197\u4f59\uff08VRRP\uff09\u6765\u5b9e\u73b0\u9ad8\u53ef\u7528\u529f\u80fd\uff0c\u9632\u6b62\u56e0\u4e3a\u5355\u70b9\u6545\u969c\u5bfc\u81f4\u6574\u4e2a\u7cfb\u7edf\u67b6\u6784\u7684\u4e0d\u53ef\u7528\u7684\u53d1\u751f\u3002\u53ef\u4ee5\u5b9e\u73b0\u8bf8\u5982“\u670d\u52a1\u5668\u72b6\u6001\u68c0\u6d4b”\u3001“\u6545\u969c\u9694\u79bb”\u3001“\u9ad8\u53ef\u7528\u96c6\u7fa4”\u7684\u529f\u80fd\u3002<\/p>\n
keepalived\u6700\u4e3b\u8981\u7684\u76ee\u7684\u662f\u80fd\u591f\u81ea\u5df1\u8c03\u7528ipvsadm\u547d\u4ee4\u6765\u751f\u6210\u89c4\u5219\uff0c\u5e76\u4e14\u80fd\u591f\u81ea\u52a8\u5b9e\u73b0\u5c06\u7528\u6237\u9700\u6c42\u7684\u8bbf\u95ee\u5730\u5740\u8f6c\u79fb\u5230\u5176\u4ed6\u8282\u70b9\u4e0a\u3002<\/p>\n
keepalived\u5728\u4e00\u4e2a\u8282\u70b9\u4e0a\u63d0\u4f9bVIP\u5411\u5916\u63d0\u4f9b\u670d\u52a1\uff0c\u5c06\u7528\u6237\u7684\u8bf7\u6c42\u8f6c\u53d1\u5230\u540e\u7aef\u7684real servel\u4e0a\u53bb\u3002<\/p>\n
keepalived\u81ea\u8eab\u542f\u52a8\u4e00\u4e2a\u670d\u52a1\uff0c\u5b83\u80fd\u591f\u5de5\u4f5c\u5728\u4e24\u4e2a\u8282\u70b9\u4e0a\u4e5f\u53ef\u4ee5\u662f\u591a\u4e2a\u8282\u70b9\uff0c\u5176\u4e2d\u5f53\u524d\u6301\u6709\u8d44\u6e90\u7684\u8282\u70b9\u79f0\u4e3a\u6d3b\u52a8\u8282\u70b9Master\uff0c\u53e6\u4e00\u4e2a\u79f0\u4e3a\u5907\u7528\u8282\u70b9backup\uff1b\u5bf9\u4e8eMaster\u548cbackup\u6765\u8bb2\uff0cMaster\u8fd9\u4e2a\u8282\u70b9\u4f1a\u4e0d\u505c\u7684\u5411backup\u8fd9\u4e2a\u8282\u70b9\u901a\u544a\u5fc3\u8df3\uff0c\u4f46\u4ed6\u7684\u901a\u544a\u662f\u57fa\u4e8eVRRP\u8fd9\u79cd\u673a\u5236\u6765\u5b9e\u73b0\u7684\uff0cMaster\u8fd9\u4e2a\u8282\u70b9\u4f1a\u4e00\u76f4\u5904\u4e8e\u5b58\u6d3b\u72b6\u6001\u7684\uff0c\u5907\u7528\u8282\u70b9backup\u4e00\u65e6\u63a5\u6536\u4e0d\u5230\u4e3b\u8282\u70b9\u7684\u5fc3\u8df3\u4f20\u9012\u8fc7\u6765\u7684VRRP\u4fe1\u606f\u4e4b\u540e\uff0c\u4ed6\u5c31\u4f1a\u628a\u8d44\u6e90\u62a2\u8fc7\u6765\u5728\u672c\u5730\u4f7f\u7528\u5e76\u5728\u672c\u5730\u751f\u6548\u89c4\u5219\uff1b\u8fd9\u4e2a\u89c4\u5219\u7684\u751f\u6548\u662f\uff1a\u672c\u5730\u6709\u4e2a\u670d\u52a1\uff0c\u5b83\u53ea\u9700\u8981\u628a\u672c\u5730\u7684keepalived\u7684\u90a3\u4e2a\u751f\u6548\u670d\u52a1\u4e2d\u7684\u67d0\u4e2a\u6a21\u5757\u628a\u4ed6\u751f\u6548\u8d77\u6765\u5c31\u53ef\u4ee5\u4e86\uff0c\u6240\u4ee5keepalived\u81ea\u8eab\u662f\u6a21\u5757\u5316\u8bbe\u8ba1\u7684\uff0c\u5b83\u6709\u7740\u8bf8\u591a\u6a21\u5757\uff1b\u6709\u4e9b\u6a21\u5757\u662f\u76d1\u63a7\u751f\u6548ipvs\u7684\uff0c\u53bb\u76d1\u63a7\u914d\u7f6e\u6587\u4ef6\u4e2d\u8ddfipvs\u76f8\u5173\u7684\u4e00\u4e9b\u5e94\u7528\uff1b\u4ed6\u7684\u4e3b\u8981\u76ee\u7684\u662f\u4e3aipvs\u63d0\u4f9b\u9ad8\u53ef\u7528\u6027\uff0ckeepalived\u9664\u4e86\u80fd\u5b9e\u73b0\u8d44\u6e90\u8f6c\u79fb\u4e4b\u5916\uff0c\u8fd8\u80fd\u81ea\u8eab\u8c03\u7528ipvs\u547d\u4ee4\u6765\u751f\u6210\u89c4\u5219\uff1b\u800c\u4e14\u8fd8\u80fd\u591f\u5b9e\u73b0\u540e\u7aefrealserver\u7684\u5065\u5eb7\u72b6\u6001\u68c0\u6d4b\u3002<\/p>\n
keepalived\u662f\u8f7b\u91cf\u7ea7\uff0c\u9002\u7528\u4e8e\u8282\u70b9\u5c11\u7684\u573a\u666f\uff1b\u652f\u6301\u591a\u4e2a\u8282\u70b9\uff0c\u4f46\u662f\u5bf9\u4e8e\u540c\u4e00\u7ec4\u670d\u52a1\u6765\u8bb2\uff0c\u4ecd\u7136\u8ddf\u6b64\u524d\u7684\u6cd5\u5219\u4e00\u6837\uff0c\u53ea\u80fd\u6709\u4e00\u4e2a\u8282\u70b9\u662f\u6d3b\u52a8\u7684\uff0c\u56e0\u4e3aVIP\u53ea\u80fd\u5728\u4e00\u4e2a\u8282\u70b9\u4e0a\u8fd0\u884c\uff0c\u6240\u4ee5\u4ed6\u662f\u4e00\u4e3b\u591a\u4ece\u7684\u6a21\u5f0f\uff1b\u53ef\u4ee5\u6709\u4e00\u4e2a\u4e3bMaster\u591a\u4e2abackup\uff1b\u4f46\u662fbackup\u8d8a\u5927\u6d6a\u8d39\u8d8a\u5927\uff0c\u8d44\u6e90\u5360\u7528\u8d8a\u5927\u3002<\/p>\n
\u9700\u8981\u6ce8\u610f\u7684\u662f\uff1avirtual_server_group\u3001virtual_server\u662f\u7528\u6765\u914d\u7f6eLVS\u3002LVS\u914d\u7f6e\u662f\u4e13\u95e8\u4e3akeepalived LVS\u96c6\u6210\u51c6\u5907\u7684\u3002\u8fd9\u91ccLVS\u914d\u7f6e\u5e76\u4e0d\u662f\u6307\u771f\u7684\u5b89\u88c5LVS\u7136\u540e\u7528ipvsadm\u6765\u914d\u7f6e\u4ed6\uff0c\u800c\u662f\u7528keepalived\u7684\u914d\u7f6e\u6587\u4ef6\u6765\u4ee3\u66ffipvsadm\u6765\u914d\u7f6eLVS\uff0c\u8fd9\u6837\u4f1a\u65b9\u4fbf\u5f88\u591a\uff0c\u4e00\u4e2a\u914d\u7f6e\u6587\u4ef6\u641e\u5b9a\u8fd9\u4e9b\uff0c\u7ef4\u62a4\u65b9\u4fbf\uff0c\u914d\u7f6e\u65b9\u4fbf\u3002<\/p>\n
\u4e8c\u3001keepalived\u7684\u90e8\u7f72 2.1\u3001\u8f6f\u4ef6\u5b89\u88c5<\/p>\n
1\u3001\u7cfb\u7edf\u5185\u6838\u53c2\u6570\u4fee\u6539<\/strong><\/p>\n vi \/etc\/sysctl.conf<\/p>\n net.ipv4.ip_forward = 1 –\u628a0\u6539\u4e3a1\u3002\u529f\u80fd\uff1a\u8bbe\u7f6e\u6216\u91cd\u65b0\u8bbe\u7f6e\u8054\u7f51\u529f\u80fd\uff0c\u5982IP\u8f6c\u53d1\u3001IP\u788e\u7247\u53bb\u9664\u4ee5\u53ca\u6e90\u8def\u7531\u68c0\u67e5\u7b49\u3002<\/p>\n \u4f7f\u914d\u7f6e\u751f\u6548\uff1asysctl -p<\/p>\n 2\u3001\u4e0b\u8f7dkeepalived\u5b89\u88c5\u8f6f\u4ef6\u5305<\/strong><\/p>\n wgethttp:\/\/www.keepalived.org\/software\/keepalived-1.2.12.tar.gz<\/p>\n tar xzf keepalived-1.2.12.tar.gz<\/p>\n cd keepalived-1.2.12<\/p>\n yum install -y gcc openssl-devel popt-devel<\/p>\n yum -y install libnl*<\/p>\n .\/configure<\/p>\n make && make install<\/p>\n 3\u3001\u628akeepalived\u5bf9\u5e94\u6587\u4ef6\u62f7\u8d1d\u5230\u76f8\u5e94\u76ee\u5f55\uff0c\u5e76\u628a\u6267\u884c\u6587\u4ef6\u52a0\u5165\u5230\u670d\u52a1\u542f\u52a8<\/strong><\/p>\n cp \/usr\/local\/etc\/rc.d\/init.d\/keepalived\/etc\/init.d\/<\/p>\n cp \/usr\/local\/etc\/sysconfig\/keepalived\/etc\/sysconfig\/<\/p>\n chmod x \/etc\/init.d\/keepalived<\/p>\n chkconfig –add keepalived<\/p>\n chkconfig keepalived on<\/p>\n mkdir \/etc\/keepalived<\/p>\n ln -s \/usr\/local\/sbin\/keepalived \/usr\/sbin\/<\/p>\n 4\u3001\u6d4b\u8bd5keepalived\u542f\u52a8<\/strong><\/p>\n service keepalived start<\/p>\n service keepalived status<\/p>\n ps -ef | grep keep<\/p>\n 5\u3001\u4e0b\u8f7dipvsadm<\/strong><\/p>\n yum install -y ipvsadm<\/p>\n 2.2\u3001\u65e5\u5fd7\u6587\u4ef6\u914d\u7f6e<\/p>\n 4\u3001\u914d\u7f6e\u65e5\u5fd7\u6587\u4ef6\uff1a<\/p>\n vi \/etc\/sysconfig\/keepalived<\/p>\n KEEPALIVED_OPTIONS="-D -d -S 0"<\/p>\n vi \/etc\/rsyslog.conf<\/p>\n local0.* \/var\/log\/keepalived.log<\/p>\n –\u91cd\u542f\u7cfb\u7edf\u65e5\u5fd7\u670d\u52a1<\/p>\n \/etc\/init.d\/rsyslog restart<\/p>\n –\u91cd\u542fkeepalived\u670d\u52a1<\/p>\n service keepalived restart<\/p>\n –\u67e5\u770bkeepalived\u65e5\u5fd7<\/p>\n more \/var\/log\/keepalived.log<\/p>\n 2.3\u3001keepalived\u914d\u7f6e<\/p>\n 5\u3001\u7f16\u5199mysql.sh\u811a\u672c<\/p>\n \u5bf9\u4e8e\u4e3a\u4ec0\u4e48\u9700\u8981\u4f7f\u7528\u8fd9\u4e2a\u811a\u672c\u7684\u89e3\u91ca\uff1a<\/p>\n \u56e0\u4e3akeepalived\u672c\u8eab\uff08\u5728\u6b64\u79cd\u914d\u7f6e\u65b9\u6cd5\u91cc\uff09\u76d1\u63a7\u4e0d\u5230\u9664\u81ea\u5df1\u4e4b\u5916\u7684\u5176\u4ed6\u670d\u52a1\uff08mysql\uff09\u7684\u8fd0\u884c\u60c5\u51b5\uff0c\u6240\u4ee5\u5728\u81ea\u5df1\u7684keepalived\u670d\u52a1\u4e0d\u505c\u6b62\u7684\u60c5\u51b5\u4e0b\uff0c\u53e6\u4e00\u4e2a\u8282\u70b9\u4e00\u76f4\u8ba4\u4e3a\u5bf9\u65b9\u4ecd\u5728\u5b58\u6d3b\uff0c\u5bfc\u81f4vip\u4e0d\u4f1a\u88ab\u5207\u6362\uff0c\u800c\u4e0d\u80fd\u901a\u8fc7\u53e6\u5916\u4e00\u53f0keepalived\u670d\u52a1\u5668\u8bbf\u95ee\u7ed1\u5b9a\u5728\u4ed6\u4e0a\u7684mysql\uff08\u6b64\u79cd\u914d\u7f6e\u662f\u4e00\u4e2akeepalived\u5bf9\u5e94\u4e00\u4e2amysql\uff0c\u53ea\u80fd\u8bbf\u95ee\u7ed1\u5b9a\u5230\u81ea\u5df1\u7684mysql\uff0c\u6ca1\u6709\u505a\u8d1f\u8f7d\u5747\u8861\uff09\u3002\u6240\u4ee5\u5728\u8fd9\u91cc\u628a\u81ea\u5df1\u7684\u670d\u52a1\u505c\u4e0b\u518d\u542f\u52a8\uff0c\u4ee5\u628aVIP\u98d8\u8fc7\u53bb\u3002\u5f53\u7136\u8fd8\u53ef\u4f7f\u7528\u53e6\u5916\u7684\u65b9\u6cd5\u914d\u7f6e\uff0c\u6bd4\u5982\uff1avrrp_script\uff08\u53ef\u53c2\u8003“\u516d\u3001\u5176\u4ed6\u573a\u666f”\u7684\u5c0f\u82822\uff09\u3002<\/p>\n \u53e6\u5916\uff0c\u9700\u8981\u8bf4\u660e\u7684\u662f\uff0c\u5982\u679c\u914d\u7f6e\u4e3aMASTER\u3001BACKUP\uff0c\u90a3\u4e48VIP\u7684\u6f02\u79fb\u662f\u901a\u8fc7\u6743\u91cd\u5224\u65ad\u7684<\/p>\n vi \/usr\/local\/script\/mysql.sh<\/p>\n [root@hadoops2 script]#vi \/usr\/local\/script\/mysql.sh<\/p>\n #!\/bin\/bash<\/p>\n \/etc\/init.d\/keepalived restart #\u6ce8\uff1a\u5728\u6570\u636e\u5e93\u4e3a\u53e6\u5916\u5355\u72ec\u7684\u771f\u5b9e\u673a\u65f6\uff0c\u4e0d\u80fd\u5206\u5f00\u505c\u542f\uff0c\u5426\u5219\u505c\u4e86\u542f\u4e0d\u6765\u3002<\/p>\n<\/p>\n \u5e76\u8d4b\u4e88\u53ef\u6267\u884c\u6743\u9650\uff1a<\/p>\n chmod u x \/usr\/local\/script\/mysql.sh<\/p>\n<\/p>\n 6\u3001\u5728\u5f53\u524d\u4e3b203\u4e0a\u914d\u7f6ekeepalived.conf<\/p>\n vi \/etc\/keepalived\/keepalived.conf<\/p>\n [root@hadoops3 keepalived-1.2.12]#vi \/etc\/keepalived\/keepalived.conf<\/p>\n<\/p>\n #! Configuration File for keepalived<\/p>\n global_defs {<\/p>\n router_id hadoops3 #\u4fee\u6539\u4e3a\u81ea\u5df1\u7684\u4e3b\u673a\u540d<\/p>\n }<\/p>\n<\/p>\n vrrp_instance VI_1 {<\/p>\n state BACKUP #\u90fd\u4fee\u6539\u6210BACKUP<\/p>\n interface eth0<\/p>\n virtual_router_id 60 #\u9ed8\u8ba451 \u4e3b\u4ece\u90fd\u4fee\u6539\u4e3a60<\/p>\n priority 100 #\u521d\u59cb\u4f18\u5148\u7ea7\uff081-254\u4e4b\u95f4\uff09\uff0c\u53e6\u4e00\u53f0\u6539\u4e3a80\uff0c\u5907\u7528\u8282\u70b9\u5fc5\u987b\u6bd4\u4e3b\u8282\u70b9\u4f18\u5148\u7ea7\u4f4e\u3002<\/p>\n advert_int 1 #\u901a\u544a\u51e0\u4e2a<\/p>\n nopreempt #\u4e0d\u62a2\u5360\u8d44\u6e90\uff0c\u610f\u601d\u5c31\u662f\u5b83\u6d3b\u4e86\u4e4b\u540e\u4e5f\u4e0d\u4f1a\u518d\u628a\u4e3b\u62a2\u56de\u6765<\/p>\n authentication { #\u8ba4\u8bc1\u673a\u5236<\/p>\n #\u8bbe\u7f6e\u9a8c\u8bc1\u4fe1\u606f\uff0c\u4e24\u4e2a\u8282\u70b9\u5fc5\u987b\u4e00\u81f4<\/p>\n auth_type PASS<\/p>\n auth_pass 1111<\/p>\n }<\/p>\n<\/p>\n virtual_ipaddress {<\/p>\n 192.168.171.200<\/p>\n }<\/p>\n }<\/p>\n<\/p>\n virtual_server 192.168.171.200 3306 {<\/p>\n delay_loop 6 #\u6bcf\u96946\u79d2\u68c0\u6d4bRealserver\u5065\u5eb7\u72b6\u51b5<\/p>\n lb_algo wrr #LVS\u7b97\u6cd5\uff0c\u5176\u4ed6\u7b97\u6cd5\u8bf7\u53c2\u8003ipvsadm\u5341\u5927\u7b97\u6cd5<\/p>\n lb_kind DR #LVS\u6a21\u5f0f\uff0cDR\u6a21\u5f0f\u5373\u76f4\u63a5\u8def\u7531\uff0c\u5176\u4ed6\u8fd8\u6709TUN\u548cNAT\u4e24\u79cd\u6a21\u5f0f\u3002<\/p>\n nat_mask 255.255.255.0<\/p>\n persistence_timeout 50 #\u4f1a\u8bdd\u4fdd\u6301\u65f6\u95f4<\/p>\n protocol TCP<\/p>\n<\/p>\n real_server 192.168.171.203 3306 { #\u771f\u5b9eip\u8f6c\u53d1\u7aef\u53e3\uff0c\u8bf7\u6ce8\u610f80\u548c\u540e\u9762{\u4e4b\u95f4\u6709\u4e2a\u7a7a\u683c\uff01<\/p>\n weight 1 # \u6743\u91cd<\/p>\n notify_down \/usr\/local\/script\/mysql.sh #\u68c0\u6d4b\u5230\u670d\u52a1down\u540e\u6267\u884c\u7684\u811a\u672c<\/p>\n<\/p>\n TCP_CHECK {<\/p>\n connect_timeout 10 #\u8fde\u63a5\u8d85\u65f6\u65f6\u95f4<\/p>\n nb_get_retry 3 #\u91cd\u8fde\u6b21\u6570<\/p>\n connect_port 3306 #\u5065\u5eb7\u68c0\u67e5\u7aef\u53e3<\/p>\n }<\/p>\n }<\/p>\n }<\/p>\n<\/p>\n 7\u3001\u5728\u5f53\u524d\u4ece202\u4e0a\u914d\u7f6ekeepalived.conf<\/p>\n \u6539\u4f18\u5148\u7ea7\u3001state\u6539\u4e3aBACKUP\uff0c\u4f18\u5148\u7ea7priority\u6539\u4e3a\u6bd4MASTER\u5c0f<\/p>\n [root@hadoops2 script]#vi \/etc\/keepalived\/keepalived.conf<\/p>\n<\/p>\n #! Configuration File for keepalived<\/p>\n global_defs {<\/p>\n router_id hadoops2 #\u4fee\u6539\u4e3a\u81ea\u5df1\u7684\u4e3b\u673a\u540d<\/p>\n }<\/p>\n<\/p>\n vrrp_instance VI_1 {<\/p>\n state BACKUP #\u90fd\u4fee\u6539\u6210BACKUP<\/p>\n interface eth0<\/p>\n virtual_router_id 60 #\u9ed8\u8ba451 \u4e3b\u4ece\u90fd\u4fee\u6539\u4e3a60<\/p>\n priority 80 #\u5728hadoops3\u4e0aLVS\u4e0a\u4fee\u6539\u6210100<\/p>\n advert_int 1<\/p>\n nopreempt #\u4e0d\u62a2\u5360\u8d44\u6e90\uff0c\u610f\u601d\u5c31\u662f\u5b83\u6d3b\u4e86\u4e4b\u540e\u4e5f\u4e0d\u4f1a\u518d\u628a\u4e3b\u62a2\u56de\u6765<\/p>\n authentication {<\/p>\n #\u8bbe\u7f6e\u9a8c\u8bc1\u4fe1\u606f\uff0c\u4e24\u4e2a\u8282\u70b9\u5fc5\u987b\u4e00\u81f4<\/p>\n auth_type PASS<\/p>\n auth_pass 1111<\/p>\n }<\/p>\n<\/p>\n virtual_ipaddress {<\/p>\n 192.168.171.200<\/p>\n }<\/p>\n }<\/p>\n<\/p>\n virtual_server 192.168.171.200 3306 {<\/p>\n delay_loop 6<\/p>\n lb_algo wrr #LVS\u7b97\u6cd5<\/p>\n lb_kind DR #LVS\u6a21\u5f0f<\/p>\n nat_mask 255.255.255.0<\/p>\n persistence_timeout 50 #\u4f1a\u8bdd\u4fdd\u6301\u65f6\u95f4<\/p>\n protocol TCP<\/p>\n<\/p>\n real_server 192.168.171.202 3306 {#\u771f\u5b9eip\u8f6c\u53d1\u7aef\u53e3<\/p>\n weight 1<\/p>\n notify_down \/usr\/local\/script\/mysql.sh #\u68c0\u6d4b\u5230\u670d\u52a1down\u540e\u6267\u884c\u7684\u811a\u672c<\/p>\n<\/p>\n TCP_CHECK {<\/p>\n connect_timeout 10 #\u8fde\u63a5\u8d85\u65f6\u65f6\u95f4<\/p>\n nb_get_retry 3 #\u91cd\u8fde\u6b21\u6570<\/p>\n connect_port 3306 #\u5065\u5eb7\u68c0\u67e5\u7aef\u53e3<\/p>\n }<\/p>\n }<\/p>\n }<\/p>\n<\/p>\n 2.4\u3001\u914d\u7f6e\u53d1\u9001\u90ae\u4ef6\u529f\u80fd\uff08\u53ef\u9009\uff09<\/p>\n 1\u3001\u4e0b\u8f7d\u73af\u5883\u4f9d\u8d56<\/p>\n yum-y install perl-CPAN<\/p>\n cpanNet::SMTP_auth<\/p>\n 2\u3001\u7f16\u5199\u5982\u4e0b\u811a\u672c\uff1a\u6807\u9ec4\u5904\u5bf9\u5e94\u4fee\u6539\u4e0b<\/p>\n<\/p>\n #!\/usr\/bin\/perl -w<\/p>\n use Net::SMTP_auth;<\/p>\n use strict;<\/p>\n my $mailhost = \\\\\\’smtp.163.com\\\\\\’;<\/p>\n my $mailfrom = \\\\\\’shanshan20060801@163.com\\\\\\’;<\/p>\n my @mailto = (\\\\\\’619901002@qq.com\\\\\\’);<\/p>\n my $subject = \\\\\\’keepalived up on 202;<\/p>\n my $text = "\u90ae\u4ef6n\u4ecelinux\u53d1\u6765\u7684\u3002";<\/p>\n my $user = \\\\\\’shanshan20060801@163.com\\\\\\’;<\/p>\n my $passwd = \\\\\\’xxxxxxxx\\\\\\’;<\/p>\n &SendMail();<\/p>\n ##############################<\/p>\n # Send notice mail<\/p>\n ##############################<\/p>\n sub SendMail() {<\/p>\n my $smtp = Net::SMTP_auth->new( $mailhost, Timeout => 120, Debug => 1 )<\/p>\n or die "Error.n";<\/p>\n $smtp->auth( \\\\\\’LOGIN\\\\\\’, $user, $passwd );<\/p>\n foreach my $mailto (@mailto) {<\/p>\n $smtp->mail($mailfrom);<\/p>\n $smtp->to($mailto);<\/p>\n $smtp->data();<\/p>\n $smtp->datasend("To: $mailton");<\/p>\n $smtp->datasend("From:$mailfromn");<\/p>\n $smtp->datasend("Subject: $subjectn");<\/p>\n $smtp->datasend("n");<\/p>\n $smtp->datasend("$textnn");<\/p>\n $smtp->dataend();<\/p>\n }<\/p>\n $smtp->quit;<\/p>\n }<\/p>\n \u6267\u884c\u6d4b\u8bd5\uff0c\u53d1\u73b0\u90ae\u4ef6\u53d1\u9001\u6210\u529f\u3002<\/p>\n [root@hadoops3script]#\/etc\/keepalived\/sendmail.pl<\/p>\n<\/p>\n \u5728\u5982\u4e0b\u4f4d\u7f6e\u6dfb\u52a0\uff1anotify_master \/etc\/keepalived\/sendmail.pl<\/p>\n<\/p>\n \u5728\u4e3b\u4ecevip\u5207\u6362\u7684\u65f6\u5019\u5373\u4f1a\u53d1\u9001\u90ae\u4ef6\u3002<\/p>\n<\/p>\n 2.5\u3001\u6d4b\u8bd5<\/p>\n 8\u3001\u5148\u91cd\u542f\u4e3bhadoops3\uff0c\u5728\u91cd\u542fhadoops2\uff0c\u53ef\u4ee5\u770b\u5230\u73b0\u5728vip\u5728hadoops3\u4e0a<\/p>\n<\/p>\n \u7136\u540e\u505c\u6b62\u4e3bhadoops3\u4e0a\u7684mysql\u670d\u52a1\uff0c\u53d1\u73b0vip\u53c8\u98d8\u5230\u4e86hadoops2\u4e0a\u3002<\/p>\n \u671f\u95f4\uff0c\u5728hadoops3\u4e0a\u7ed1\u5b9a\u7684mysql\u670d\u52a1\u672a\u542f\u52a8\u65f6\uff0chadoops3\u7684\u65e5\u5fd7\u4f1a\u663e\u793a\u53cd\u590d\u91cd\u542fkeepalived\u670d\u52a1\uff0c\u76f4\u81f3\u7ed1\u5b9a\u5728\u5176\u4e0a\u7684mysql\u6b63\u5e38\u542f\u52a8\u540e\u3002<\/p>\n \u5982\u4e0b\uff1a<\/p>\n tail -f\/var\/log\/messages<\/p>\n<\/p>\n \u5230\u6b64\uff0c\u90e8\u7f72\u5b8c\u6bd5\uff01<\/p>\n<\/p>\n<\/p>\n \u66f4\u591a\u5173\u4e8e\u4e91\u670d\u52a1\u5668\uff0c\u57df\u540d<\/a><\/span>\u6ce8\u518c\uff0c\u865a\u62df\u4e3b\u673a\u7684\u95ee\u9898\uff0c\u8bf7\u8bbf\u95ee\u57a6\u6d3e\u79d1\u6280<\/a><\/span>\u5b98\u7f51\uff1awww.kenpai.com<\/a><\/span><\/p>\n","protected":false},"excerpt":{"rendered":" \u4e00\u3001keepalived\u7b80\u4ecbkeepalived\u662fLinux\u4e0b\u4e00\u4e2a\u8f7b\u91cf\u7ea7\u7684\u9ad8\u53ef\u7528\u89e3\u51b3\u65b9\u6848\uff0ckeepalived\u4e3b\u8981\u901a\u8fc7\u865a\u62df\u8def\u7531\u5197\u4f59\uff08VRRP\uff09\u6765\u5b9e\u73b0\u9ad8\u53ef<\/p>\n","protected":false},"author":2,"featured_media":446,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3322],"tags":[3920],"class_list":["post-5051","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ktougao","tag-keepalivedmysql"],"_links":{"self":[{"href":"https:\/\/www.kenpai.com\/cms\/wp-json\/wp\/v2\/posts\/5051","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.kenpai.com\/cms\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.kenpai.com\/cms\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.kenpai.com\/cms\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.kenpai.com\/cms\/wp-json\/wp\/v2\/comments?post=5051"}],"version-history":[{"count":0,"href":"https:\/\/www.kenpai.com\/cms\/wp-json\/wp\/v2\/posts\/5051\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.kenpai.com\/cms\/wp-json\/wp\/v2\/media\/446"}],"wp:attachment":[{"href":"https:\/\/www.kenpai.com\/cms\/wp-json\/wp\/v2\/media?parent=5051"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.kenpai.com\/cms\/wp-json\/wp\/v2\/categories?post=5051"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.kenpai.com\/cms\/wp-json\/wp\/v2\/tags?post=5051"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}