{"id":522,"date":"2024-12-05T16:00:44","date_gmt":"2024-12-05T08:00:44","guid":{"rendered":"http:\/\/192.168.5.24\/?p=522"},"modified":"2025-05-12T17:34:36","modified_gmt":"2025-05-12T09:34:36","slug":"%e6%90%ad%e5%bb%bakeepalivedlvs-dr%e9%ab%98%e5%8f%af%e7%94%a8%e9%9b%86%e7%be%a4","status":"publish","type":"post","link":"https:\/\/bigvip.dpdns.org\/?p=522","title":{"rendered":"\u642d\u5efaKeepalived+LVS-DR\u9ad8\u53ef\u7528\u96c6\u7fa4"},"content":{"rendered":"\n

\u4e00\uff09Keepalived\u7b80\u4ecb<\/h3>\n\n\n\n

Keepalived\u8d77\u521d\u662f\u4e3aLVS\u8bbe\u8ba1\u7684\uff0c\u4e13\u95e8\u7528\u6765\u76d1\u63a7\u96c6\u7fa4\u7cfb\u7edf\u4e2d\u5404\u4e2a\u670d\u52a1\u8282\u70b9\u7684\u72b6\u6001\uff0c\u5b83\u6839\u636eTCP\/IP\u53c2\u8003\u6a21\u578b\u7684\u7b2c\u4e09\u3001\u7b2c\u56db\u5c42\u3001\u7b2c\u4e94\u5c42\u4ea4\u6362\u673a\u5236\u68c0\u6d4b\u6bcf\u4e2a\u670d\u52a1\u8282\u70b9\u7684\u72b6\u6001\uff0c\u5982\u679c\u67d0\u4e2a\u670d\u52a1\u5668\u8282\u70b9\u51fa\u73b0\u5f02\u5e38\uff0c\u6216\u8005\u5de5\u4f5c\u51fa\u73b0\u6545\u969c\uff0cKeepalived\u5c06\u68c0\u6d4b\u5230\uff0c\u5e76\u5c06\u51fa\u73b0\u7684\u6545\u969c\u7684\u670d\u52a1\u5668\u8282\u70b9\u4ece\u96c6\u7fa4\u7cfb\u7edf\u4e2d\u5254\u9664\uff0c\u8fd9\u4e9b\u5de5\u4f5c\u5168\u90e8\u662f\u81ea\u52a8\u5b8c\u6210\u7684\u3002<\/p>\n\n\n\n

\u540e\u6765Keepalived\u53c8\u52a0\u5165\u4e86VRRP\u7684\u529f\u80fd\uff0cVRRP\uff08Vritrual Router Redundancy Protocol,\u865a\u62df\u8def\u7531\u5197\u4f59\u534f\u8bae)\u51fa\u73b0\u7684\u76ee\u7684\u662f\u89e3\u51b3\u9759\u6001\u8def\u7531\u51fa\u73b0\u7684\u5355\u70b9\u6545\u969c\u95ee\u9898\uff0c\u901a\u8fc7VRRP\u53ef\u4ee5\u5b9e\u73b0\u7f51\u7edc\u4e0d\u95f4\u65ad\u7a33\u5b9a\u8fd0\u884c\uff0c\u56e0\u6b64Keepalvied \u4e00\u65b9\u9762\u5177\u6709\u670d\u52a1\u5668\u72b6\u6001\u68c0\u6d4b\u548c\u6545\u969c\u9694\u79bb\u529f\u80fd\uff0c\u53e6\u5916\u4e00\u65b9\u9762\u4e5f\u6709HA cluster\u529f\u80fd\u3002<\/p>\n\n\n\n

\u4e8c\uff09\u5de5\u4f5c\u539f\u7406<\/h3>\n\n\n\n

keepalived\u7684\u70ed\u5907\u65b9\u5f0f\u57fa\u4e8eVRRP\u534f\u8bae\uff0c\u91c7\u7528\u4e00\u4e3b\u591a\u5907\u65b9\u5f0f\uff0c\u5373\u4e00\u4e2amaster\u4e3b\u673a\uff0c\u591a\u4e2abackup\u4e3b\u673a\uff0c\u591a\u4e2a\u4e3b\u673a\u5171\u7528\u540c\u4e00\u4e2a\u865a\u62dfIP\u5730\u5740\uff0c\u4f46\u4f18\u5148\u7ea7\u4e0d\u540c\uff0c\u540c\u4e00\u65f6\u95f4\u53ea\u6709\u4e00\u4e2a\u4e3b\u673a\u5728\u8fd0\u884c\u3002\u4e3b\u5907\u8bbe\u5907\u4e4b\u95f4\u53ef\u4ee5\u76f8\u4e92\u76d1\u6d4b\u72b6\u6001\uff0c\u4e00\u4f46\u53d1\u73b0\u4e3b\u8bbe\u5907\u6545\u969c\uff0c\u5219\u5907\u7528\u8bbe\u5907\u6839\u636e\u4f18\u5148\u7ea7\u9009\u4e3e\u51fa\u65b0\u7684master\u4e3b\u673a\uff0c\u865a\u62dfIP\u4e5f\u7531\u6545\u969c\u4e3b\u673a\u6f02\u79fb\u5230\u65b0\u7684master\u6a21\u5f0f\u7684\u4e3b\u673a\u3002<\/p>\n\n\n\n

\u4e09\uff09Keepalived\u5b89\u88c5\u53ca\u8bbe\u7f6e<\/h3>\n\n\n\n

1\u3001\u5b89\u88c5\u4f9d\u8d56<\/p>\n\n\n\n

yum -y install openssl openssl-devel libnl libnl-devel libnl3 libnfnetlink<\/code><\/pre>\n\n\n\n
2\u3001\u7f16\u8bd1\u5b89\u88c5keepalived<\/p>\n\n\n\n
tar -zxvf keepalived-2.2.2.tar.gz \ncd keepalived-2.2.2\n.\/configure --prefix=\/usr\/local\/keepalived\nmake && make install<\/code><\/pre>\n\n\n\n
3\u3001\u590d\u5236\u542f\u52a8\u811a\u672c\u53d8\u91cf\u5f15\u7528\u6587\u4ef6\u3002<\/p>\n\n\n\n
\u200bcd \/usr\/src\/keepalived-2.2.2 <\/p>\n\n\n\n
cp keepalived\/etc\/sysconfig\/keepalived      \/etc\/sysconfig\/<\/p>\n\n\n\n
\u200b \u6ce8\uff1a\u9ed8\u8ba4\u542f\u52a8\u811a\u672c\u53d8\u91cf\u5f15\u7528\u6587\u4ef6\u4f4d\u4e8e\/etc\/sysconfig,\u4f46\u5b89\u88c5\u5b8c\u540e\uff0c\u8be5\u76ee\u5f55\u4e0b\u6ca1\u6709\u5f15\u7528\u53d8\u91cf\u6587\u4ef6\u3002\u6240\u4ee5\u9700\u8981\u590d\u5236\u8be5\u6587\u4ef6\u5230\u9ed8\u8ba4\u4f4d\u7f6e\u3002<\/p>\n\n\n\n
\u200b 4\u3001\u590d\u5236\u63a7\u5236\u811a\u672c<\/p>\n\n\n\n
\u200b cp keepalived\/etc\/init.d\/keepalived     \/etc\/init.d\/<\/p>\n\n\n\n
\u200b 5\u3001\u6dfb\u52a0\u670d\u52a1<\/p>\n\n\n\n
\u200b chkconfig –add keepalived<\/p>\n\n\n\n
\u200b6\u3001\u590d\u5236\u914d\u7f6e\u6587\u4ef6<\/p>\n\n\n\n
\u200b cd \/keepalived\/etc\/keepalived\/keepalived.conf      \/etc\/keepalived\/<\/p>\n\n\n\n
\u200b \u6ce8\uff1a\u5b89\u88c5\u5b8c\u6210\u540e\uff0ckeepalived\u914d\u7f6e\u6587\u4ef6\u662f\/etc\/keepalived\/keepalived.conf,\u4e14\u65b0\u5b89\u88c5\u7684keepalived\u914d\u7f6e\u6587\u4ef6\u4e2d\u6ca1\u6709\u914d\u7f6e\u3002<\/p>\n\n\n\n
\u56db\uff09\u914d\u7f6e\u6587\u4ef6\u5185\u5bb9\u8bf4\u660e<\/h3>\n\n\n\n
\u200b \uff01\u5f00\u59cb\u7684\u884c\u4e3a\u6ce8\u91ca<\/p>\n\n\n\n
\u200b global-defs{}                                  #\u5168\u5c40\u8bbe\u7f6e<\/p>\n\n\n\n
\u200b vrrp_instance VI_1{}                     #\u70ed\u5907\u5b9e\u4f8b\u8bbe\u7f6e<\/p>\n\n\n\n
\u200b virtual_server                               #\u865a\u62df\u670d\u52a1\u5668\u8bbe\u7f6e<\/p>\n\n\n\n
\u4e94\uff09\u914d\u7f6e\u53cc\u673a\u70ed\u5907\u4efd<\/h3>\n\n\n\n
    \u73af\u5883\u8bf4\u660e\uff1a\u4e24\u53f0LVS\u670d\u52a1\u5668IP\u5206\u522b\u4e3a192.168.3.34\uff0c192.168.3.35\uff0c\u6f02\u79fbIP\u5730\u5740\uff1a192.168.3.200\uff0c\u670d\u52a1\u5668\u6c60IP\uff1a192.168.3.135,192.168.3.136\uff0c\u5ba2\u6237\u673aIP\u4e3a192.168.3.21(\u8fd9\u91cc\u6211\u4eec\u91c7\u7528\u4e86\u771f\u673a\uff09\uff0c\u4e94\u53f0\u4e3b\u673a\u91c7\u7528\u6865\u63a5\u6a21\u5f0f\u8fde\u63a5\u3002<\/code><\/pre>\n\n\n\n
\u200b 1\u3001\u670d\u52a1\u5668Keepalived\u914d\u7f6e<\/strong><\/p>\n\n\n\n
LVS\u670d\u52a1\u56681\u914d\u7f6e<\/strong>\n\nglobal_defs {\n   router_id LVS_34<\/strong>   #\u5f53\u524d\u4e3b\u673a\u7684ID\n}\nvrrp_instance VI_1 {\n\u200b            state MASTER <\/strong>               #\u4e00\u4e2a\u70ed\u5907\u4efd\u7ec4\u53ea\u80fd\u6709\u4e00\u53f0master\n\u200b            interface ens33              #\u627f\u8f7dVIP\u5730\u5740\u7684\u7f51\u5361\n\u200b            virtual_router_id 51         #\u53ef\u4ee5\u968f\u610f\u6307\u5b9a\n\u200b            priority    100              #0-255\uff0c\u6570\u503c\u8d8a\u5927\uff0c\u4f18\u5148\u7ea7\u8d8a\u9ad8\u3002\n\u200b            advert_int  1                #\u5fc3\u8df3\u76d1\u6d4b\u65f6\u95f4(\u79d2)\n\u200b            authentication  {           #\u8ba4\u8bc1\u7c7b\u578b\n\u200b            auth_type PASS              #\u5bc6\u7801\u8ba4\u8bc1\n\u200b            auth_pass 1111              #\u8ba4\u8bc1\u5171\u4eab\u5bc6\u7801\n\u200b                            }\n\u200b            virtual_ipaddress{          #\u6f02\u79fbIP\u5730\u5740\n\u200b                192.168.3.200   \n\u200b                             }\n\u200b        }\n\nvirtual_server 192.168.3.200 80 {\n    delay_loop 2\t               #\u6bcf\u96942\u79d2\u67e5\u8be2realserver\u72b6\u6001\n    lb_algo rr\t\t               #lvs\u7b97\u6cd5\n    lb_kind DR\t\t               #lvs\u5de5\u4f5c\u6a21\u5f0f\n    persistence_timeout 50\t       #\u540c\u4e00IP\u7684\u8fde\u63a550\u79d2\u5185\u88ab\u5206\u914d\u5230\u540c\u4e00\u53f0realserver\n    protocol TCP\t               #\u7528TCP\u534f\u8bae\u68c0\u67e5realserver\u72b6\u6001\n\n\treal_server 192.168.3.135 80 {\n    \tweight 1\t                #\u6743\u91cd\n\t\tTCP_CHECK{\n\t\tconnect_port 80\n\t\tconnect_timeout 3\t#3\u79d2\u65e0\u54cd\u5e94\u8d85\u65f6\n\t\tnb_get_retry 3\t\t#\u5931\u8d25\u91cd\u8bd5\u6b21\u6570\n\t\tdelay_before_retry 3\t#\u5931\u8d25\u91cd\u8bd5\u7684\u95f4\u9694\u65f6\u95f4\n    \t                 }\n\t                              }\n\treal_server 192.168.3.136 80 {\n    \tweight 1\n\t\tTCP_CHECK{  \n\t\tconnect_port 80\n\t\tconnect_timeout 3\n\t\tnb_get_retry 3\n\t\tdelay_before_retry 3\n    \t                 }\n\t                             }\n}<\/code><\/pre>\n\n\n\n
LVS\u670d\u52a1\u56682\u914d\u7f6e<\/strong>\n\nglobal_defs {\n   router_id LVS_35<\/strong>   #\u5f53\u524d\u4e3b\u673a\u7684ID\n}\nvrrp_instance VI_1 {\n\u200b            state BACKUP <\/strong>               #\u4e00\u4e2a\u70ed\u5907\u4efd\u7ec4\u53ea\u80fd\u6709\u4e00\u53f0master\n\u200b            interface ens33              #\u627f\u8f7dVIP\u5730\u5740\u7684\u7f51\u5361\n\u200b            virtual_router_id 51         #\u53ef\u4ee5\u968f\u610f\u6307\u5b9a\n\u200b            priority    100              #0-255\uff0c\u6570\u503c\u8d8a\u5927\uff0c\u4f18\u5148\u7ea7\u8d8a\u9ad8\u3002\n\u200b            advert_int  1                #\u5fc3\u8df3\u76d1\u6d4b\u65f6\u95f4\n\u200b            authentication  {           #\u8ba4\u8bc1\u7c7b\u578b\n\u200b            auth_type PASS              #\u5bc6\u7801\u8ba4\u8bc1\n\u200b            auth_pass 1111              #\u8ba4\u8bc1\u5171\u4eab\u5bc6\u7801\n\u200b                            }\n\u200b            virtual_ipaddress{          #\u6f02\u79fbIP\u5730\u5740\n\u200b                192.168.3.200   \n\u200b                             }\n\u200b        }\n\nvirtual_server 192.168.3.200 80 {\n    delay_loop 2\t               #\u6bcf\u96942\u79d2\u67e5\u8be2realserver\u72b6\u6001\n    lb_algo rr\t\t               #lvs\u7b97\u6cd5\n    lb_kind DR\t\t               #lvs\u5de5\u4f5c\u6a21\u5f0f\n    persistence_timeout 50\t       #\u540c\u4e00IP\u7684\u8fde\u63a550\u79d2\u5185\u88ab\u5206\u914d\u5230\u540c\u4e00\u53f0realserver\n    protocol TCP\t               #\u7528TCP\u534f\u8bae\u68c0\u67e5realserver\u72b6\u6001\n\n\treal_server 192.168.3.135 80 {\n    \tweight 1\t                #\u6743\u91cd\n\t\tTCP_CHECK\n{\n\t\tconnect_port 80\n\t\tconnect_timeout 3\t#3\u79d2\u65e0\u54cd\u5e94\u8d85\u65f6\n\t\tnb_get_retry 3\t\t#\u5931\u8d25\u91cd\u8bd5\u6b21\u6570\n\t\tdelay_before_retry 3\t#\u5931\u8d25\u91cd\u8bd5\u7684\u95f4\u9694\u65f6\u95f4\n    \t                 }\n\t                              }\n\treal_server 192.168.3.136 80 {\n    \tweight 1\n\t\tTCP_CHECK\n{  \n\t\tconnect_port 80\n\t\tconnect_timeout 3\n\t\tnb_get_retry 3\n\t\tdelay_before_retry 3\n    \t                 }\n\t                             }\n}<\/code><\/pre>\n\n\n\n
2\u3001Keepalived\u7684\u5de5\u4f5c\u6a21\u5f0f<\/strong><\/h4>\n\n\n\n
       \u62a2\u5360\u6a21\u5f0f<\/strong>\uff1a\u7cfb\u7edf\u9ed8\u8ba4\u6a21\u5f0f\u3002\u4e3b\u670d\u52a1\u5668\u6b63\u5e38\u5de5\u4f5c\u65f6\uff0c\u865a\u62dfIP\u4f1a\u5728\u4e3b\u4e0a\uff0c\u5907\u4e0d\u63d0\u4f9b\u670d\u52a1\uff0c\u5f53\u4e3b\u670d\u52a1\u4f18\u5148\u7ea7\u4f4e\u4e8e\u5907\u7684\u65f6\u5019\uff0c\u5907\u4f1a\u81ea\u52a8\u62a2\u5360\u865a\u62dfIP\uff0c\u8fd9\u65f6\uff0c\u4e3b\u4e0d\u4f9b\u670d\u52a1\uff0c\u5907\u63d0\u4f9b\u670d\u52a1\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u62a2\u5360\u6a21\u5f0f\u4e0b\uff0c\u4e0d\u5206\u4e3b\u5907\uff0c\u53ea\u7ba1\u4f18\u5148\u7ea7<\/strong>\u3002\u4e0d\u7ba1 keepalived.conf \u91cc\u7684 state \u914d\u7f6e\u6210 master \u8fd8\u662f backup \uff0c\u53ea\u770b\u8c01\u7684priority \u4f18\u5148\u7ea7\u9ad8\uff0c priority \u4f18\u5148\u7ea7\u9ad8\u7684\u90a3\u4e00\u4e2a\uff0c\u5728\u6545\u969c\u6062\u590d\u540e\uff0c\u4f1a\u81ea\u52a8\u5c06VIP\u8d44\u6e90\u518d\u6b21\u62a2\u56de\u6765\u3002<\/p>\n\n\n\n
      \u975e\u62a2\u5360\u6a21\u5f0f<\/strong>\uff1a\u975e\u62a2\u5360\u6a21\u5f0f\u4e0d\u7ba1priority\u4f18\u5148\u7ea7\uff0c\u53ea\u8981master\u673a\u5668\u53d1\u751f\u6545\u969c\uff0cVIP\u8d44\u6e90\u5c31\u4f1a\u88ab\u5207\u6362\u5230backup\u4e0a\uff0c\u5e76\u4e14\uff0c\u5f53master\u673a\u5668\u6062\u590d\u540e\uff0c\u4e5f\u4e0d\u4f1a\u5c06VIP\u8d44\u6e90\u62a2\u56de\u6765\u3002\u9664\u975eBackup\u673a\u5668\u53d1\u751f\u6545\u969c\uff0c\u624d\u80fd\u81ea\u52a8\u628aVIP\u7b49\u8d44\u6e90\u5207\u6362\u4f1a\u4e3b\u5e93\u3002\u3000\u8fd9\u79cd\u65b9\u5f0f\u901a\u8fc7\u53c2\u6570nopreempt\uff08\u4e00\u822c\u8bbe\u7f6e\u5728advert_int \u7684\u90a3\u4e00\u884c\u4e0b\u9762\uff09\u6765\u63a7\u5236\u3002nopreempt <\/strong>\u8fd9\u4e2a\u53c2\u6570\u53ea\u80fd\u7528\u6237state\u4e3abackup\u7684\u60c5\u51b5\u4e0b\u624d\u80fd\u751f\u6548\uff0c\u6240\u4ee5\u5728\u914d\u7f6e\u7684\u65f6\u5019\u8981\u628amaster\u548cbackup\u7684state\u90fd\u8bbe\u7f6e\u6210backup\uff0c\u8fd9\u6837\u624d\u4f1a\u5b9e\u73b0keepalived\u7684\u975e\u62a2\u5360\u6a21\u5f0f\uff01<\/p>\n\n\n\n
\u516d\uff09\u670d\u52a1\u5668\u6c60\u7684\u914d\u7f6e<\/h3>\n\n\n\n
     1\u3001\u670d\u52a1\u5668\u6c60\u7684\u6bcf\u53f0\u670d\u52a1\u5668\u5148\u5b89\u88c5\u914d\u7f6e\u597d\u76f8\u5e94\u7684\u5e94\u7528\u670d\u52a1\uff0c\u5982httpd<\/p>\n\n\n\n
     2\u3001\u8bbe\u7f6e\u7f51\u5361lo\u7684\u5b50\u63a5\u53e3IP\u4e3a\u6f02\u79fbIP\uff0c\u5e76\u5173\u95edarp\u5e94\u7b54\uff0c\u4ee5\u670d\u52a1\u5668\u6c60\u5176\u4e2d\u4e00\u53f0\u670d\u52a1\u5668\u914d\u7f6e\u4e3a\u4f8b\uff1a<\/p>\n\n\n\n
1\uff09\u914d\u7f6e\u7fa4\u96c6\u63a5\u53e3lo:0<\/strong>\ncp \/etc\/sysconfig\/network-scripts\/ifcfg-lo ifcfg-lo:0\n\nvim ifcfg-lo:0\t\n\n```\n\t\tDEVICE=lo:0\n\t\tIPADDR=192.168.3.200\n\t\tNETMASK=255.255.255.255\n\t\tONBOOT=yes\n```\n\nifup lo:0\n\n2\uff09\u8c03\u6574\/proc\u5185\u6838\u53c2\u6570\uff0c\u5173\u95edARP\u54cd\u5e94<\/strong>\n\n\u200bvim \/etc\/sysctl.conf\n\n\u5185\u5bb9\u5e95\u90e8\u6dfb\u52a0\u4ee5\u4e0b\u5185\u5bb9\uff1a\n\n```\nnet.ipv4.conf.all.arp_ignore=1 \n#\u53ea\u56de\u7b54\u76ee\u6807IP\u5730\u5740\u662f\u6765\u8bbf\u7f51\u7edc\u63a5\u53e3\u672c\u5730\u5730\u5740\u7684ARP\u67e5\u8be2\u8bf7\u6c42\nnet.ipv4.conf.all.arp_announce=2 \n#\u5ffd\u7565IP\u6570\u636e\u5305\u7684\u6e90IP\u5730\u5740\uff0c\u9009\u62e9\u8be5\u53d1\u9001\u7f51\u5361\u4e0a\u6700\u5408\u9002\u7684\u672c\u5730\u5730\u5740\u4f5c\u4e3aarp\u8bf7\u6c42\u7684\u6e90IP\u5730\u5740\u3002\nnet.ipv4.conf.default.arp_ignore=1               #\u5ffd\u7565arp\nnet.ipv4.conf.default.arp_announce=2\nnet.ipv4.conf.lo.arp_ignore=1                    #\u5ffd\u7565arp\nnet.ipv4.conf.lo.arp_announce=2\n```\n\nsysctl -p \n\n3\uff09\u6dfb\u52a0\u5230\u7fa4\u96c6IP\u5730\u5740\u7684\u672c\u5730\u8def\u7531\u8bb0\u5f55<\/strong>\n\n\u200bvim  \/etc\/rc.local       #\u6b64\u6587\u4ef6\u542f\u52a8\u65f6\u4f1a\u81ea\u52a8\u6267\u884c\n\nroute  add -host 192.168.3.200 dev   lo:0  \n#\u6dfb\u52a0\u4e00\u6761\u5230\u7fa4\u96c6IP\u4e3b\u673a\u5730\u5740\u7684\u8def\u7531\uff0cdev\u8868\u793a\u7ecf\u8fc7\u7684\u63a5\u53e3\u3002<\/code><\/pre>\n\n\n\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
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