{"id":5440,"date":"2020-08-18T16:23:05","date_gmt":"2020-08-18T08:23:05","guid":{"rendered":"http:\/\/39.97.231.10\/?p=5440"},"modified":"2020-08-18T16:23:05","modified_gmt":"2020-08-18T08:23:05","slug":"keepalived%e5%ae%9e%e7%8e%b0%e6%9c%8d%e5%8a%a1%e9%ab%98%e5%8f%af%e7%94%a8-2","status":"publish","type":"post","link":"http:\/\/www.weijing.co\/?p=5440","title":{"rendered":"keepalived\u5b9e\u73b0\u670d\u52a1\u9ad8\u53ef\u7528"},"content":{"rendered":"
<\/header>\n
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\u7b2c1\u7ae0 keepalived\u670d\u52a1\u8bf4\u660e<\/span><\/div>\n
\n

1.1 keepalived\u662f\u4ec0\u4e48\uff1f<\/span><\/h2>\n

Keepalived\u8f6f\u4ef6\u8d77\u521d\u662f\u4e13\u4e3aLVS\u8d1f\u8f7d\u5747\u8861\u8f6f\u4ef6\u8bbe\u8ba1\u7684\uff0c\u7528\u6765\u7ba1\u7406\u5e76\u76d1\u63a7LVS\u96c6\u7fa4\u7cfb\u7edf\u4e2d\u5404\u4e2a\u670d\u52a1\u8282\u70b9\u7684\u72b6\u6001\uff0c\u540e\u6765\u53c8\u52a0\u5165\u4e86\u53ef\u4ee5\u5b9e\u73b0\u9ad8\u53ef\u7528\u7684VRRP\u529f\u80fd\u3002\u56e0\u6b64\uff0cKeepalived\u9664\u4e86\u80fd\u591f\u7ba1\u7406LVS\u8f6f\u4ef6\u5916\uff0c\u8fd8\u53ef\u4ee5\u4f5c\u4e3a\u5176\u4ed6\u670d\u52a1\uff08\u4f8b\u5982\uff1aNginx\u3001Haproxy\u3001MySQL\u7b49\uff09\u7684\u9ad8\u53ef\u7528\u89e3\u51b3\u65b9\u6848\u8f6f\u4ef6\u3002
\nKeepalived\u8f6f\u4ef6\u4e3b\u8981\u662f\u901a\u8fc7VRRP\u534f\u8bae\u5b9e\u73b0\u9ad8\u53ef\u7528\u529f\u80fd\u7684\u3002VRRP\u662fVirtual Router RedundancyProtocol(\u865a\u62df\u8def\u7531\u5668\u5197\u4f59\u534f\u8bae\uff09\u7684\u7f29\u5199\uff0cVRRP\u51fa\u73b0\u7684\u76ee\u7684\u5c31\u662f\u4e3a\u4e86\u89e3\u51b3\u9759\u6001\u8def\u7531\u5355\u70b9\u6545\u969c\u95ee\u9898\u7684\uff0c\u5b83\u80fd\u591f\u4fdd\u8bc1\u5f53\u4e2a\u522b\u8282\u70b9\u5b95\u673a\u65f6\uff0c\u6574\u4e2a\u7f51\u7edc\u53ef\u4ee5\u4e0d\u95f4\u65ad\u5730\u8fd0\u884c\u3002
\n\u6240\u4ee5\uff0cKeepalived \u4e00\u65b9\u9762\u5177\u6709\u914d\u7f6e\u7ba1\u7406LVS\u7684\u529f\u80fd\uff0c\u540c\u65f6\u8fd8\u5177\u6709\u5bf9LVS\u4e0b\u9762\u8282\u70b9\u8fdb\u884c\u5065\u5eb7\u68c0\u67e5\u7684\u529f\u80fd\uff0c\u53e6\u4e00\u65b9\u9762\u4e5f\u53ef\u5b9e\u73b0\u7cfb\u7edf\u7f51\u7edc\u670d\u52a1\u7684\u9ad8\u53ef\u7528\u529f\u80fd\u3002
\nkeepalived\u5b98\u7f51http:\/\/www.keepalived.org<\/i><\/a><\/p>\n

1.2 keepalived\u670d\u52a1\u7684\u4e09\u4e2a\u91cd\u8981\u529f\u80fd<\/span><\/h2>\n

\u7ba1\u7406LVS\u8d1f\u8f7d\u5747\u8861\u8f6f\u4ef6
\n\u5b9e\u73b0LVS\u96c6\u7fa4\u8282\u70b9\u7684\u5065\u5eb7\u68c0\u67e5\u4e2d
\n\u4f5c\u4e3a\u7cfb\u7edf\u7f51\u7edc\u670d\u52a1\u7684\u9ad8\u53ef\u7528\u6027\uff08failover\uff09<\/p>\n

1.3 Keepalived\u9ad8\u53ef\u7528\u6545\u969c\u5207\u6362\u8f6c\u79fb\u539f\u7406<\/span><\/h2>\n

Keepalived\u9ad8\u53ef\u7528\u670d\u52a1\u5bf9\u4e4b\u95f4\u7684\u6545\u969c\u5207\u6362\u8f6c\u79fb\uff0c\u662f\u901a\u8fc7 VRRP (Virtual Router Redundancy Protocol ,\u865a\u62df\u8def\u7531\u5668\u5197\u4f59\u534f\u8bae\uff09\u6765\u5b9e\u73b0\u7684\u3002
\n\u5728 Keepalived\u670d\u52a1\u6b63\u5e38\u5de5\u4f5c\u65f6\uff0c\u4e3b Master\u8282\u70b9\u4f1a\u4e0d\u65ad\u5730\u5411\u5907\u8282\u70b9\u53d1\u9001\uff08\u591a\u64ad\u7684\u65b9\u5f0f\uff09\u5fc3\u8df3\u6d88\u606f\uff0c\u7528\u4ee5\u544a\u8bc9\u5907Backup\u8282\u70b9\u81ea\u5df1\u8fd8\u6d3b\u770b\uff0c\u5f53\u4e3b Master\u8282\u70b9\u53d1\u751f\u6545\u969c\u65f6\uff0c\u5c31\u65e0\u6cd5\u53d1\u9001\u5fc3\u8df3\u6d88\u606f\uff0c\u5907\u8282\u70b9\u4e5f\u5c31\u56e0\u6b64\u65e0\u6cd5\u7ee7\u7eed\u68c0\u6d4b\u5230\u6765\u81ea\u4e3b Master\u8282\u70b9\u7684\u5fc3\u8df3\u4e86\uff0c\u4e8e\u662f\u8c03\u7528\u81ea\u8eab\u7684\u63a5\u7ba1\u7a0b\u5e8f\uff0c\u63a5\u7ba1\u4e3bMaster\u8282\u70b9\u7684 IP\u8d44\u6e90\u53ca\u670d\u52a1\u3002\u800c\u5f53\u4e3b Master\u8282\u70b9\u6062\u590d\u65f6\uff0c\u5907Backup\u8282\u70b9\u53c8\u4f1a\u91ca\u653e\u4e3b\u8282\u70b9\u6545\u969c\u65f6\u81ea\u8eab\u63a5\u7ba1\u7684IP\u8d44\u6e90\u53ca\u670d\u52a1\uff0c\u6062\u590d\u5230\u539f\u6765\u7684\u5907\u7528\u89d2\u8272\u3002
\n\u90a3\u4e48\uff0c\u4ec0\u4e48\u662fVRRP\u5462\uff1f
\nVRRP ,\u5168 \u79f0 Virtual Router Redundancy Protocol ,\u4e2d\u6587\u540d\u4e3a\u865a\u62df\u8def\u7531\u5197\u4f59\u534f\u8bae \uff0cVRRP\u7684\u51fa\u73b0\u5c31\u662f\u4e3a\u4e86\u89e3\u51b3\u9759\u6001\u8e23\u7536\u7684\u5355\u70b9\u6545\u969c\u95ee\u9898\uff0cVRRP\u662f\u901a\u8fc7\u4e00\u79cd\u7ade\u9009\u673a\u5236\u6765\u5c06\u8def\u7531\u7684\u4efb\u52a1\u4ea4\u7ed9\u67d0\u53f0VRRP\u8def\u7531\u5668\u7684\u3002<\/p>\n

1.4 keepalived \u539f\u7406<\/span><\/h2>\n

1.4.1keepalived\u9ad8\u53ef\u7528\u67b6\u6784\u793a\u610f\u56fe<\/span><\/h3>\n

\\\"keepalived\u5b9e\u73b0\u670d\u52a1\u9ad8\u53ef\u7528\\\"<\/p>\n

1.4.2 \u6587\u5b57\uff0c\u8868\u8ff0<\/span><\/h3>\n

Keepalived\u7684\u5de5\u4f5c\u539f\u7406\uff1a
\nKeepalived\u9ad8\u53ef\u7528\u5bf9\u4e4b\u95f4\u662f\u901a\u8fc7VRRP\u901a\u4fe1\u7684\uff0c\u56e0\u6b64\uff0c\u6211\u4eec\u4ece VRRP\u5f00\u59cb\u4e86\u89e3\u8d77\uff1a
\n1) VRRP,\u5168\u79f0 Virtual Router Redundancy Protocol,\u4e2d\u6587\u540d\u4e3a\u865a\u62df\u8def\u7531\u5197\u4f59\u534f\u8bae\uff0cVRRP\u7684\u51fa\u73b0\u662f\u4e3a\u4e86\u89e3\u51b3\u9759\u6001\u8def\u7531\u7684\u5355\u70b9\u6545\u969c\u3002
\n2) VRRP\u662f\u901a\u8fc7\u4e00\u79cd\u7adf\u9009\u534f\u8bae\u673a\u5236\u6765\u5c06\u8def\u7531\u4efb\u52a1\u4ea4\u7ed9\u67d0\u53f0 VRRP\u8def\u7531\u5668\u7684\u3002
\n3) VRRP\u7528 IP\u591a\u64ad\u7684\u65b9\u5f0f\uff08\u9ed8\u8ba4\u591a\u64ad\u5730\u5740\uff08224.0_0.18))\u5b9e\u73b0\u9ad8\u53ef\u7528\u5bf9\u4e4b\u95f4\u901a\u4fe1\u3002
\n4) \u5de5\u4f5c\u65f6\u4e3b\u8282\u70b9\u53d1\u5305\uff0c\u5907\u8282\u70b9\u63a5\u5305\uff0c\u5f53\u5907\u8282\u70b9\u63a5\u6536\u4e0d\u5230\u4e3b\u8282\u70b9\u53d1\u7684\u6570\u636e\u5305\u7684\u65f6\u5019\uff0c\u5c31\u542f\u52a8\u63a5\u7ba1\u7a0b\u5e8f\u63a5\u7ba1\u4e3b\u8282\u70b9\u7684\u5f00\u6e90\u3002\u5907\u8282\u70b9\u53ef\u4ee5\u6709\u591a\u4e2a\uff0c\u901a\u8fc7\u4f18\u5148\u7ea7\u7ade\u9009\uff0c\u4f46\u4e00\u822c Keepalived\u7cfb\u7edf\u8fd0\u7ef4\u5de5\u4f5c\u4e2d\u90fd\u662f\u4e00\u5bf9\u3002
\n5) VRRP\u4f7f\u7528\u4e86\u52a0\u5bc6\u534f\u8bae\u52a0\u5bc6\u6570\u636e\uff0c\u4f46Keepalived\u5b98\u65b9\u76ee\u524d\u8fd8\u662f\u63a8\u8350\u7528\u660e\u6587\u7684\u65b9\u5f0f\u914d\u7f6e\u8ba4\u8bc1\u7c7b\u578b\u548c\u5bc6\u7801\u3002
\n\u4ecb\u7ecd\u5b8c VRRP,\u63a5\u4e0b\u6765\u6211\u518d\u4ecb\u7ecd\u4e00\u4e0b Keepalived\u670d\u52a1\u7684\u5de5\u4f5c\u539f\u7406\uff1a
\nKeepalived\u9ad8\u53ef\u7528\u5bf9\u4e4b\u95f4\u662f\u901a\u8fc7 VRRP\u8fdb\u884c\u901a\u4fe1\u7684\uff0c VRRP\u662f\u9051\u8fc7\u7ade\u9009\u673a\u5236\u6765\u786e\u5b9a\u4e3b\u5907\u7684\uff0c\u4e3b\u7684\u4f18\u5148\u7ea7\u9ad8\u4e8e\u5907\uff0c\u56e0\u6b64\uff0c\u5de5\u4f5c\u65f6\u4e3b\u4f1a\u4f18\u5148\u83b7\u5f97\u6240\u6709\u7684\u8d44\u6e90\uff0c\u5907\u8282\u70b9\u5904\u4e8e\u7b49\u5f85\u72b6\u6001\uff0c\u5f53\u4e3b\u6302\u4e86\u7684\u65f6\u5019\uff0c\u5907\u8282\u70b9\u5c31\u4f1a\u63a5\u7ba1\u4e3b\u8282\u70b9\u7684\u8d44\u6e90\uff0c\u7136\u540e\u9876\u66ff\u4e3b\u8282\u70b9\u5bf9\u5916\u63d0\u4f9b\u670d\u52a1\u3002
\n\u5728 Keepalived\u670d\u52a1\u5bf9\u4e4b\u95f4\uff0c\u53ea\u6709\u4f5c\u4e3a\u4e3b\u7684\u670d\u52a1\u5668\u4f1a\u4e00\u76f4\u53d1\u9001 VRRP\u5e7f\u64ad\u5305,\u544a\u8bc9\u5907\u5b83\u8fd8\u6d3b\u7740\uff0c\u6b64\u65f6\u5907\u4e0d\u4f1a\u67aa\u5360\u4e3b\uff0c\u5f53\u4e3b\u4e0d\u53ef\u7528\u65f6\uff0c\u5373\u5907\u76d1\u542c\u4e0d\u5230\u4e3b\u53d1\u9001\u7684\u5e7f\u64ad\u5305\u65f6\uff0c\u5c31\u4f1a\u542f\u52a8\u76f8\u5173\u670d\u52a1\u63a5\u7ba1\u8d44\u6e90\uff0c\u4fdd\u8bc1\u4e1a\u52a1\u7684\u8fde\u7eed\u6027.\u63a5\u7ba1\u901f\u5ea6\u6700\u5feb\u53ef\u4ee5\u5c0f\u4e8e1\u79d2\u3002<\/p>\n

\u7b2c2\u7ae0 keepalived\u8f6f\u4ef6\u4f7f\u7528<\/span><\/h1>\n

2.1 \u8f6f\u4ef6\u7684\u90e8\u7f72<\/span><\/h2>\n

2.1.1 \u7b2c\u4e00\u4e2a\u91cc\u7a0b\u7891 keepalived\u8f6f\u4ef6\u5b89\u88c5<\/span><\/h3>\n
\n

\u00a0yum\u00a0install\u00a0keepalived -y<\/span><\/p>\n<\/div>\n

\n
\n
\/etc\/keepalived\n\/etc\/keepalived\/keepalived.conf     #keepalived\u670d\u52a1\u4e3b\u914d\u7f6e\u6587\u4ef6\n\/etc\/rc.d\/init.d\/keepalived         #\u670d\u52a1\u542f\u52a8\u811a\u672c\n\/etc\/sysconfig\/keepalived\n\/usr\/bin\/genhash\n\/usr\/libexec\/keepalived\n\/usr\/sbin\/keepalived<\/pre>\n<\/div>\n<\/div>\n
\u7b2c\u4e8c\u4e2a\u91cc\u7a0b\u7891\uff1a \u8fdb\u884c\u9ed8\u8ba4\u914d\u7f6e\u6d4b\u8bd5<\/p>\n
2.1.2 \u914d\u7f6e\u6587\u4ef6\u8bf4\u660e<\/span><\/h3>\n
1-13\u884c\u8868\u793a\u5168\u5c40\u914d\u7f6e<\/p>\n
\n
\n
 global_defs {    #\u5168\u5c40\u914d\u7f6e\n    notification_email {   \u5b9a\u4e49\u62a5\u8b66\u90ae\u4ef6\u5730\u5740\n      acassen@firewall.loc\n      failover@firewall.loc\n      sysadmin@firewall.loc\n    }\n    notification_email_from Alexandre.Cassen@firewall.loc  #\u5b9a\u4e49\u53d1\u9001\u90ae\u4ef6\u7684\u5730\u5740\n    smtp_server 192.168.200.1   #\u90ae\u7bb1\u670d\u52a1\u5668\n    smtp_connect_timeout 30      #\u5b9a\u4e49\u8d85\u65f6\u65f6\u95f4\n    router_id LVS_DEVEL        #\u5b9a\u4e49\u8def\u7531\u6807\u8bc6\u4fe1\u606f\uff0c\u76f8\u540c\u5c40\u57df\u7f51\u552f\u4e00\n }<\/pre>\n<\/div>\n<\/div>\n
15-30\u884c \u865a\u62dfip\u914d\u7f6e brrp<\/p>\n
\n
\n
vrrp_instance VI_1 {   #\u5b9a\u4e49\u5b9e\u4f8b\n    state MASTER         #\u72b6\u6001\u53c2\u6570 master\/backup \u53ea\u662f\u8bf4\u660e\n    interface eth0       #\u865aIP\u5730\u5740\u653e\u7f6e\u7684\u7f51\u5361\u4f4d\u7f6e\n    virtual_router_id 51 #\u540c\u4e00\u5bb6\u65cf\u8981\u4e00\u76f4\uff0c\u540c\u4e00\u4e2a\u96c6\u7fa4id\u4e00\u81f4\n    priority 100         # \u4f18\u5148\u7ea7\u51b3\u5b9a\u662f\u4e3b\u8fd8\u662f\u5907    \u8d8a\u5927\u8d8a\u4f18\u5148\n    advert_int 1        #\u4e3b\u5907\u901a\u8baf\u65f6\u95f4\u95f4\u9694\n    authentication {     # \u2193\n        auth_type PASS    #\u2193\n        auth_pass 1111    #\u8ba4\u8bc1\n    }                        #\u2191\n    virtual_ipaddress {  #\u2193\n        192.168.200.16    \u8bbe\u5907\u4e4b\u95f4\u4f7f\u7528\u7684\u865a\u62dfip\u5730\u5740\n        192.168.200.17\n        192.168.200.18\n    }\n}<\/pre>\n<\/div>\n<\/div>\n
\u914d\u7f6e\u7ba1\u7406LVS<\/p>\n
\n
\u3000\u3000\u5173\u4e8e LVS \u8be6\u60c5\u53c2\u8003\u00a0http:\/\/www.cnblogs.com\/clsn\/p\/7920637.html#_label7<\/i><\/a><\/p>\n<\/div>\n
2.1.3 \u6700\u7ec8\u914d\u7f6e\u6587\u4ef6<\/span><\/h3>\n
\u4e3b\u8d1f\u8f7d\u5747\u8861\u670d\u52a1\u5668\u914d\u7f6e<\/strong><\/p>\n
\n
\n
[root@lb01 conf]# cat  \/etc\/keepalived\/keepalived.conf\n! Configuration File for keepalived\nglobal_defs {\n   router_id lb01\n}\nvrrp_instance VI_1 {\n    state MASTER\n    interface eth0\n    virtual_router_id 51\n    priority 150\n    advert_int 1\n    authentication {\n        auth_type PASS\n        auth_pass 1111\n    }\n    virtual_ipaddress {\n        10.0.0.3\n    }\n}<\/pre>\n<\/div>\n<\/div>\n
\u5907\u8d1f\u8f7d\u5747\u8861\u670d\u52a1\u5668\u914d\u7f6e<\/strong><\/p>\n
\n
\n
[root@lb02 ~]# cat \/etc\/keepalived\/keepalived.conf\n! Configuration File for keepalived\nglobal_defs {\n   router_id lb02\n}\nvrrp_instance VI_1 {\n    state BACKUP\n    interface eth0\n    virtual_router_id 51\n    priority 100\n    advert_int 1\n    authentication {\n        auth_type PASS\n        auth_pass 1111\n    }\n    virtual_ipaddress {\n     10.0.0.3\n    }\n}<\/pre>\n<\/div>\n<\/div>\n
2.1.4 \u542f\u52a8keepalived<\/span><\/h3>\n
\n
\n
[root@lb02 ~]# \/etc\/init.d\/keepalived start\nStarting keepalived:                                       [  OK  ]<\/pre>\n<\/div>\n<\/div>\n
2.1.5 \u3010\u8bf4\u660e\u3011\u5728\u8fdb\u884c\u8bbf\u95ee\u6d4b\u8bd5\u4e4b\u524d\u8981\u4fdd\u8bc1\u540e\u7aef\u7684\u8282\u70b9\u90fd\u80fd\u591f\u5355\u72ec\u7684\u8bbf\u95ee\u3002<\/span><\/h3>\n
\u6d4b\u8bd5\u8fde\u901a\u6027.\u00a0 \u00a0\u00a0\u540e\u7aef\u8282\u70b9<\/p>\n
\n
\n
[root@lb01 conf]# curl -H host:www.etiantian.org  10.0.0.8\nweb01 www\n[root@lb01 conf]# curl -H host:www.etiantian.org  10.0.0.7\nweb02 www\n[root@lb01 conf]# curl -H host:www.etiantian.org  10.0.0.9\nweb03 www\n[root@lb01 conf]# curl -H host:bbs.etiantian.org  10.0.0.9\nweb03 bbs\n[root@lb01 conf]# curl -H host:bbs.etiantian.org  10.0.0.8\nweb01 bbs\n[root@lb01 conf]# curl -H host:bbs.etiantian.org  10.0.0.7\nweb02 bbs<\/pre>\n<\/div>\n<\/div>\n
2.1.6 \u67e5\u770b\u865a\u62dfip\u72b6\u6001<\/span><\/h3>\n
\n
\n
[root@lb01 conf]# ip a\n1: lo: <loopback,up,lower_up> mtu 65536 qdisc noqueue state UNKNOWN\n    link\/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00\n    inet 127.0.0.1\/8 scope host lo\n    inet6 ::1\/128 scope host\n       valid_lft forever preferred_lft forever\n2: eth0: <broadcast,multicast,up,lower_up> mtu 1500 qdisc pfifo_fast state UP qlen 1000\n    link\/ether 00:0c:29:90:7f:0d brd ff:ff:ff:ff:ff:ff\n    inet 10.0.0.5\/24 brd 10.0.0.255 scope global eth0\n    inet 10.0.0.3\/24 scope global secondary eth0:1\n    inet6 fe80::20c:29ff:fe90:7f0d\/64 scope link\n       valid_lft forever preferred_lft forever\n3: eth1: <broadcast,multicast,up,lower_up> mtu 1500 qdisc pfifo_fast state UP qlen 1000\n    link\/ether 00:0c:29:90:7f:17 brd ff:ff:ff:ff:ff:ff\n    inet 172.16.1.5\/24 brd 172.16.1.255 scope global eth1\n    inet6 fe80::20c:29ff:fe90:7f17\/64 scope link\n       valid_lft forever preferred_lft forever<\/broadcast,multicast,up,lower_up><\/broadcast,multicast,up,lower_up><\/loopback,up,lower_up><\/pre>\n<\/div>\n<\/div>\n
2.1.7 \u3010\u603b\u7ed3\u3011\u914d\u7f6e\u6587\u4ef6\u4fee\u6539<\/span><\/h3>\n
Keepalived\u4e3b\u5907\u914d\u7f6e\u6587\u4ef6\u533a\u522b\uff1a
\n01. router_id \u4fe1\u606f\u4e0d\u4e00\u81f4
\n02. state \u72b6\u6001\u63cf\u8ff0\u4fe1\u606f\u4e0d\u4e00\u81f4
\n03. priority \u4e3b\u5907\u7ade\u9009\u4f18\u5148\u7ea7\u6570\u503c\u4e0d\u4e00\u81f4<\/p>\n
2.2 \u8111\u88c2<\/span><\/h2>\n
\u5728\u9ad8\u53ef\u7528\uff08HA\uff09\u7cfb\u7edf\u4e2d\uff0c\u5f53\u8054\u7cfb2\u4e2a\u8282\u70b9\u7684\u201c\u5fc3\u8df3\u7ebf\u201d\u65ad\u5f00\u65f6\uff0c\u672c\u6765\u4e3a\u4e00\u6574\u4f53\u3001\u52a8\u4f5c\u534f\u8c03\u7684HA\u7cfb\u7edf\uff0c\u5c31\u5206\u88c2\u6210\u4e3a2\u4e2a\u72ec\u7acb\u7684\u4e2a\u4f53\u3002\u7531\u4e8e\u76f8\u4e92\u5931\u53bb\u4e86\u8054\u7cfb\uff0c\u90fd\u4ee5\u4e3a\u662f\u5bf9\u65b9\u51fa\u4e86\u6545\u969c\u3002\u4e24\u4e2a\u8282\u70b9\u4e0a\u7684HA\u8f6f\u4ef6\u50cf\u201c\u88c2\u8111\u4eba\u201d\u4e00\u6837\uff0c\u4e89\u62a2\u201c\u5171\u4eab\u8d44\u6e90\u201d\u3001\u4e89\u8d77\u201c\u5e94\u7528\u670d\u52a1\u201d\uff0c\u5c31\u4f1a\u53d1\u751f\u4e25\u91cd\u540e\u679c\u2014\u2014\u6216\u8005\u5171\u4eab\u8d44\u6e90\u88ab\u74dc\u5206\u30012\u8fb9\u201c\u670d\u52a1\u201d\u90fd\u8d77\u4e0d\u6765\u4e86\uff1b\u6216\u80052\u8fb9\u201c\u670d\u52a1\u201d\u90fd\u8d77\u6765\u4e86\uff0c\u4f46\u540c\u65f6\u8bfb\u5199\u201c\u5171\u4eab\u5b58\u50a8\u201d\uff0c\u5bfc\u81f4\u6570\u636e\u635f\u574f\uff08\u5e38\u89c1\u5982\u6570\u636e\u5e93\u8f6e\u8be2\u7740\u7684\u8054\u673a\u65e5\u5fd7\u51fa\u9519\uff09\u3002
\n\u5bf9\u4ed8HA\u7cfb\u7edf\u201c\u88c2\u8111\u201d\u7684\u5bf9\u7b56\uff0c\u76ee\u524d\u8fbe\u6210\u5171\u8bc6\u7684\u7684\u5927\u6982\u6709\u4ee5\u4e0b\u51e0\u6761\uff1a
\n1\uff09\u6dfb\u52a0\u5197\u4f59\u7684\u5fc3\u8df3\u7ebf\uff0c\u4f8b\u5982\uff1a\u53cc\u7ebf\u6761\u7ebf\uff08\u5fc3\u8df3\u7ebf\u4e5fHA\uff09\uff0c\u5c3d\u91cf\u51cf\u5c11\u201c\u88c2\u8111\u201d\u53d1\u751f\u51e0\u7387\uff1b
\n2\uff09\u542f\u7528\u78c1\u76d8\u9501\u3002\u6b63\u5728\u670d\u52a1\u4e00\u65b9\u9501\u4f4f\u5171\u4eab\u78c1\u76d8\uff0c\u201c\u88c2\u8111\u201d\u53d1\u751f\u65f6\uff0c\u8ba9\u5bf9\u65b9\u5b8c\u5168\u201c\u62a2\u4e0d\u8d70\u201d\u5171\u4eab\u78c1\u76d8\u8d44\u6e90\u3002\u4f46\u4f7f\u7528\u9501\u78c1\u76d8\u4e5f\u4f1a\u6709\u4e00\u4e2a\u4e0d\u5c0f\u7684\u95ee\u9898\uff0c\u5982\u679c\u5360\u7528\u5171\u4eab\u76d8\u7684\u4e00\u65b9\u4e0d\u4e3b\u52a8\u201c\u89e3\u9501\u201d\uff0c\u53e6\u4e00\u65b9\u5c31\u6c38\u8fdc\u5f97\u4e0d\u5230\u5171\u4eab\u78c1\u76d8\u3002\u73b0\u5b9e\u4e2d\u5047\u5982\u670d\u52a1\u8282\u70b9\u7a81\u7136\u6b7b\u673a\u6216\u5d29\u6e83\uff0c\u5c31\u4e0d\u53ef\u80fd\u6267\u884c\u89e3\u9501\u547d\u4ee4\u3002\u540e\u5907\u8282\u70b9\u4e5f\u5c31\u63a5\u7ba1\u4e0d\u4e86\u5171\u4eab\u8d44\u6e90\u548c\u5e94\u7528\u670d\u52a1\u3002\u4e8e\u662f\u6709\u4eba\u5728HA\u4e2d\u8bbe\u8ba1\u4e86\u201c\u667a\u80fd\u201d\u9501\u3002\u5373\uff1a\u6b63\u5728\u670d\u52a1\u7684\u4e00\u65b9\u53ea\u5728\u53d1\u73b0\u5fc3\u8df3\u7ebf\u5168\u90e8\u65ad\u5f00\uff08\u5bdf\u89c9\u4e0d\u5230\u5bf9\u7aef\uff09\u65f6\u624d\u542f\u7528\u78c1\u76d8\u9501\u3002\u5e73\u65f6\u5c31\u4e0d\u4e0a\u9501\u4e86\u3002
\n3\uff09\u8bbe\u7f6e\u4ef2\u88c1\u673a\u5236\u3002\u4f8b\u5982\u8bbe\u7f6e\u53c2\u8003IP\uff08\u5982\u7f51\u5173IP\uff09\uff0c\u5f53\u5fc3\u8df3\u7ebf\u5b8c\u5168\u65ad\u5f00\u65f6\uff0c2\u4e2a\u8282\u70b9\u90fd\u5404\u81eaping\u4e00\u4e0b\u53c2\u8003IP\uff0c\u4e0d\u901a\u5219\u8868\u660e\u65ad\u70b9\u5c31\u51fa\u5728\u672c\u7aef\u3002\u4e0d\u4ec5\u201c\u5fc3\u8df3\u201d\u3001\u8fd8\u517c\u5bf9\u5916\u201c\u670d\u52a1\u201d\u7684\u672c\u7aef\u7f51\u7edc\u94fe\u8def\u65ad\u4e86\uff0c\u5373\u4f7f\u542f\u52a8\uff08\u6216\u7ee7\u7eed\uff09\u5e94\u7528\u670d\u52a1\u4e5f\u6ca1\u6709\u7528\u4e86\uff0c\u90a3\u5c31\u4e3b\u52a8\u653e\u5f03\u7ade\u4e89\uff0c\u8ba9\u80fd\u591fping\u901a\u53c2\u8003IP\u7684\u4e00\u7aef\u53bb\u8d77\u670d\u52a1\u3002\u66f4\u4fdd\u9669\u4e00\u4e9b\uff0cping\u4e0d\u901a\u53c2\u8003IP\u7684\u4e00\u65b9\u5e72\u8106\u5c31\u81ea\u6211\u91cd\u542f\uff0c\u4ee5\u5f7b\u5e95\u91ca\u653e\u6709\u53ef\u80fd\u8fd8\u5360\u7528\u7740\u7684\u90a3\u4e9b\u5171\u4eab\u8d44\u6e90\u3002<\/p>\n
2.2.1 \u8111\u88c2\u4ea7\u751f\u7684\u539f\u56e0<\/span><\/h3>\n
\u4e00\u822c\u6765\u8bf4\uff0c\u88c2\u8111\u7684\u53d1\u751f\uff0c\u6709\u4ee5\u4e0b\u51e0\u79cd\u539f\u56e0\uff1a
\n? \u9ad8\u53ef\u7528\u670d\u52a1\u5668\u5bf9\u4e4b\u95f4\u5fc3\u8df3\u7ebf\u94fe\u8def\u53d1\u751f\u6545\u969c\uff0c\u5bfc\u81f4\u65e0\u6cd5\u6b63\u5e38\u901a\u4fe1\u3002
\n\u56e0\u5fc3\u8df3\u7ebf\u574f\u4e86\uff08\u5305\u62ec\u65ad\u4e86\uff0c\u8001\u5316\uff09\u3002
\n\u56e0\u7f51\u5361\u53ca\u76f8\u5173\u9a71\u52a8\u574f\u4e86\uff0cip\u914d\u7f6e\u53ca\u51b2\u7a81\u95ee\u9898\uff08\u7f51\u5361\u76f4\u8fde\uff09\u3002
\n\u56e0\u5fc3\u8df3\u7ebf\u95f4\u8fde\u63a5\u7684\u8bbe\u5907\u6545\u969c\uff08\u7f51\u5361\u53ca\u4ea4\u6362\u673a\uff09\u3002
\n\u56e0\u4ef2\u88c1\u7684\u673a\u5668\u51fa\u95ee\u9898\uff08\u91c7\u7528\u4ef2\u88c1\u7684\u65b9\u6848\uff09\u3002
\n?\u00a0\u00a0\u9ad8\u53ef\u7528\u670d\u52a1\u5668\u4e0a\u5f00\u542f\u4e86 iptables\u9632\u706b\u5899\u963b\u6321\u4e86\u5fc3\u8df3\u6d88\u606f\u4f20\u8f93\u3002
\n?\u00a0\u9ad8\u53ef\u7528\u670d\u52a1\u5668\u4e0a\u5fc3\u8df3\u7f51\u5361\u5730\u5740\u7b49\u4fe1\u606f\u914d\u7f6e\u4e0d\u6b63\u786e\uff0c\u5bfc\u81f4\u53d1\u9001\u5fc3\u8df3\u5931\u8d25\u3002
\n?\u00a0\u5176\u4ed6\u670d\u52a1\u914d\u7f6e\u4e0d\u5f53\u7b49\u539f\u56e0\uff0c\u5982\u5fc3\u8df3\u65b9\u5f0f\u4e0d\u540c\uff0c\u5fc3\u8df3\u5e7f\u63d2\u51b2\u7a81\u3001\u8f6f\u4ef6Bug\u7b49\u3002<\/p>\n
\n
\u3000\u3000\u3000\u3000\u63d0\u793a\uff1a<\/strong>\u00a0Keepalived\u914d\u7f6e\u91cc\u540c\u4e00 VRRP\u5b9e\u4f8b\u5982\u679c virtual_router_id\u4e24\u7aef\u53c2\u6570\u914d\u7f6e\u4e0d\u4e00\u81f4\u4e5f\u4f1a\u5bfc\u81f4\u88c2\u8111\u95ee\u9898\u53d1\u751f\u3002<\/p>\n<\/div>\n
2.2.2 \u5e38\u89c1\u7684\u89e3\u51b3\u65b9\u6848<\/span><\/h3>\n
\u5728\u5b9e\u9645\u751f\u4ea7\u73af\u5883\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u4ece\u4ee5\u4e0b\u51e0\u4e2a\u65b9\u9762\u6765\u9632\u6b62\u88c2\u8111\u95ee\u9898\u7684\u53d1\u751f\uff1a
\n? \u540c\u65f6\u4f7f\u7528\u4e32\u884c\u7535\u7f06\u548c\u4ee5\u592a\u7f51\u7535\u7f06\u8fde\u63a5\uff0c\u540c\u65f6\u7528\u4e24\u6761\u5fc3\u8df3\u7ebf\u8def\uff0c\u8fd9\u6837\u4e00\u6761\u7ebf\u8def\u574f\u4e86\uff0c\u53e6\u4e00\u4e2a\u8fd8\u662f\u597d\u7684\uff0c\u4f9d\u7136\u80fd\u4f20\u9001\u5fc3\u8df3\u6d88\u606f\u3002
\n?\u00a0\u5f53\u68c0\u6d4b\u5230\u88c2\u8111\u65f6\u5f3a\u884c\u5173\u95ed\u4e00\u4e2a\u5fc3\u8df3\u8282\u70b9\uff08\u8fd9\u4e2a\u529f\u80fd\u9700\u7279\u6b8a\u8bbe\u5907\u652f\u6301\uff0c\u5982Stonith\u3001feyce\uff09\u3002\u76f8\u5f53\u4e8e\u5907\u8282\u70b9\u63a5\u6536\u4e0d\u5230\u5fc3\u8df3\u6d88\u60a3\uff0c\u901a\u8fc7\u5355\u72ec\u7684\u7ebf\u8def\u53d1\u9001\u5173\u673a\u547d\u4ee4\u5173\u95ed\u4e3b\u8282\u70b9\u7684\u7535\u6e90\u3002
\n?\u00a0 \u505a\u597d\u5bf9\u88c2\u8111\u7684\u76d1\u63a7\u62a5\u8b66\uff08\u5982\u90ae\u4ef6\u53ca\u624b\u673a\u77ed\u4fe1\u7b49\u6216\u503c\u73ed\uff09.\u5728\u95ee\u9898\u53d1\u751f\u65f6\u4eba\u4e3a\u7b2c\u4e00\u65f6\u95f4\u4ecb\u5165\u4ef2\u88c1\uff0c\u964d\u4f4e\u635f\u5931\u3002\u4f8b\u5982\uff0c\u767e\u5ea6\u7684\u76d1\u63a7\u62a5\u8b66\u77ed\u500d\u5c31\u6709\u4e0a\u884c\u548c\u4e0b\u884c\u7684\u533a\u522b\u3002\u62a5\u8b66\u6d88\u606f\u53d1\u9001\u5230\u7ba1\u7406\u5458\u624b\u673a\u4e0a\uff0c\u7ba1\u7406\u5458\u53ef\u4ee5\u901a\u8fc7\u624b\u673a\u56de\u590d\u5bf9\u5e94\u6570\u5b57\u6216\u7b80\u5355\u7684\u5b57\u7b26\u4e32\u64cd\u4f5c\u8fd4\u56de\u7ed9\u670d\u52a1\u5668.\u8ba9\u670d\u52a1\u5668\u6839\u636e\u6307\u4ee4\u81ea\u52a8\u5904\u7406\u76f8\u5e94\u6545\u969c\uff0c\u8fd9\u6837\u89e3\u51b3\u6545\u969c\u7684\u65f6\u95f4\u66f4\u77ed.
\n\u5f53\u7136\uff0c\u5728\u5b9e\u65bd\u9ad8\u53ef\u7528\u65b9\u6848\u65f6\uff0c\u8981\u6839\u636e\u4e1a\u52a1\u5b9e\u9645\u9700\u6c42\u786e\u5b9a\u662f\u5426\u80fd\u5bb9\u5fcd\u8fd9\u6837\u7684\u635f\u5931\u3002\u5bf9\u4e8e\u4e00\u822c\u7684\u7f51\u7ad9\u5e38\u89c4\u4e1a\u52a1.\u8fd9\u4e2a\u635f\u5931\u662f\u53ef\u5bb9\u5fcd\u7684\u3002<\/p>\n
2.3 \u5982\u4f55\u8fdb\u884c\u8111\u88c2\u60c5\u51b5\u76d1\u63a7<\/span><\/h2>\n
2.3.1 \u5728\u4ec0\u4e48\u670d\u52a1\u5668\u4e0a\u8fdb\u884c\u76d1\u63a7\uff1f<\/span><\/h3>\n
\u5728\u5907\u670d\u52a1\u5668\u4e0a\u8fdb\u884c\u76d1\u63a7\uff0c\u53ef\u4ee5\u4f7f\u7528zabbix\u76d1\u63a7\uff0c\u53c2\u8003http:\/\/www.cnblogs.com\/clsn\/p\/7885990.html<\/i><\/a><\/p>\n
2.3.2 \u76d1\u63a7\u4ec0\u4e48\u4fe1\u606f\uff1f<\/span><\/h3>\n
\u3000\u3000\u5907\u4e0a\u9762\u51fa\u73b0vip<\/em>\u60c5\u51b5\uff1a<\/em>
\n1\uff09\u8111\u88c2\u60c5\u51b5\u51fa\u73b0
\n2\uff09\u6b63\u5e38\u4e3b\u5907\u5207\u6362\u4e5f\u4f1a\u51fa\u73b0<\/p>\n
2.3.3 \u7f16\u5199\u76d1\u63a7\u8111\u88c2\u811a\u672c<\/span><\/h3>\n
\n
\n
[root@lb02 scripts]# vim check_keepalived.sh\n#!\/bin\/bash\nwhile true\ndo\nif [ `ip a show eth0 |grep 10.0.0.3|wc -l` -ne 0 ]\nthen\n    echo \\\"keepalived is error!\\\"\nelse\n    echo \\\"keepalived is OK !\\\"\nfi\ndone<\/pre>\n<\/div>\n<\/div>\n
\u7f16\u5199\u5b8c\u811a\u672c\u540e\u8981\u7ed9\u811a\u672c\u8d4b\u4e88\u6267\u884c\u6743\u9650<\/p>\n
2.3.4 \u6d4b\u8bd5 \u786e\u4fdd\u4e24\u53f0\u8d1f\u8f7d\u5747\u8861\u80fd\u591f\u6b63\u5e38\u8d1f\u8f7d<\/span><\/h3>\n
\n
\n
[root@lb01 ~]# curl -H Host:www.etiantian.org 10.0.0.5\nweb01 www\n[root@lb01 ~]# curl -H Host:www.etiantian.org 10.0.0.6\nweb01 www\n[root@lb01 ~]# curl -H Host:bbs.etiantian.org 10.0.0.6\nweb02 bbs\n [root@lb01 ~]# curl -H Host:www.etiantian.org 10.0.0.5\nweb03 www<\/pre>\n<\/div>\n<\/div>\n
2.4 \u6392\u9519\u8fc7\u7a0b<\/span><\/h2>\n
1\uff09\u5229\u7528\u8d1f\u8f7d\u5747\u8861\u670d\u52a1\u5668\uff0c\u5728\u670d\u52a1\u5668\u4e0acurl\u6240\u6709\u7684\u8282\u70b9\u4fe1\u606f\uff08web\u670d\u52a1\u5668\u914d\u7f6e\u6709\u95ee\u9898\uff09
\n2\uff09curl \u8d1f\u8f7d\u5747\u8861\u670d\u52a1\u5668\u5730\u5740\uff0c\u53ef\u4ee5\u5b9e\u73b0\u8d1f\u8f7d\u5747\u8861
\n3\uff09windows\u4e0a\u7ed1\u5b9a\u865a\u62dfIP\uff0c\u6d4f\u89c8\u5668\u4e0a\u8fdb\u884c\u6d4b\u8bd5
\n\u3000\u3000\u3000\u3000keepalived<\/strong>\u65e5\u5fd7\u6587\u4ef6\u4f4d\u7f6e \/var\/log\/messages<\/strong><\/p>\n
2.5 \u66f4\u6539nginx\u53cd\u5411\u4ee3\u7406\u914d\u7f6e \u53ea\u76d1\u542cvip\u5730\u5740<\/span><\/h2>\n
\u4fee\u6539nginx\u76d1\u542c\u53c2\u6570\u00a0\u00a0listen 10.0.0.3:80;<\/span>
\n\u4fee\u6539\u5185\u6838\u53c2\u6570\uff0c\u5b9e\u73b0\u76d1\u542c\u672c\u5730\u4e0d\u5b58\u5728\u7684ip<\/p>\n
\n
\n
echo \\'net.ipv4.ip_nonlocal_bind = 1\\' >>\/etc\/sysctl.conf\nsysctl -p\n[root@lb02 conf]# cat \/proc\/sys\/net\/ipv4\/ip_nonlocal_bind\n<\/pre>\n<\/div>\n<\/div>\n
2.6 \u8ba9keepalived\u76d1\u63a7nginx<\/span><\/h2>\n
\n
\n
ps -ef |grep nginx |grep -v grep |wc -l<\/pre>\n<\/div>\n<\/div>\n
\u7f16\u5199\u6267\u884c\u811a\u672c<\/p>\n
\n
\n
#!\/bin\/bash\nwhile true\ndo\nif [ `ps -ef |grep nginx |grep -v grep |wc -l` -lt 2 ]\nthen\n   \/etc\/init.d\/keepalived stop\n   exit\nfi\ndone<\/pre>\n<\/div>\n<\/div>\n
\n
\u6ce8\u610f\u811a\u672c\u7684\u6388\u6743<\/strong><\/p>\n
\n
[root@lb01 scripts]# chmod +x check_www.sh<\/pre>\n<\/div>\n<\/div>\n
2.6.1 \u4f7f\u7528keepalived\u7684\u76d1\u63a7\u811a\u672c<\/span><\/h3>\n
\u8bf4\u660e \u6267\u884c\u7684\u811a\u672c\u540d\u79f0\u5c3d\u91cf\u4e0d\u8981\u548c\u670d\u52a1\u540d\u79f0\u76f8\u540c\u6216\u76f8\u4f3c<\/p>\n
\n
\n
[root@lb01 scripts]# cat \/etc\/keepalived\/keepalived.conf\n! Configuration File for keepalived\nglobal_defs {\n   router_id lb01\n}\nvrrp_script check {     #\u5b9a\u4e49\u811a\u672c\n   script \\\"\u201c\/server\/scripts\/check_web.sh\\\"  --- \u8868\u793a\u5c06\u4e00\u4e2a\u811a\u672c\u4fe1\u606f\u8d4b\u503c\u7ed9\u53d8\u91cfcheck_web\n   interval 2    --- \u6267\u884c\u76d1\u63a7\u811a\u672c\u7684\u95f4\u9694\u65f6\u95f4\n   weight 2  ---\u5229\u7528\u6743\u91cd\u503c\u548c\u4f18\u5148\u7ea7\u8fdb\u884c\u8fd0\u7b97\uff0c\u4ece\u800c\u964d\u4f4e\u4e3b\u670d\u52a1\u4f18\u5148\u7ea7\u4f7f\u4e4b\u53d8\u4e3a\u5907\u670d\u52a1\u5668\uff08\u5efa\u8bae\u5148\u5ffd\u7565\uff09\n}\nvrrp_instance VI_1 {\n    state MASTER\n    interface eth0\n    virtual_router_id 51\n    priority 150\n    advert_int 1\n    authentication {\n        auth_type PASS\n        auth_pass 1111\n    }\n    virtual_ipaddress {\n        10.0.0.3\/24 dev eth0 label eth0:1\n    }\n    track_script {     #\u8c03\u7528\u811a\u672c\n       check\n    }\n}<\/pre>\n<\/div>\n<\/div>\n
2.7 \u591a\u5b9e\u4f8b\u7684\u914d\u7f6e<\/span><\/h2>\n
2.7.1 lb01\u7684keepalived\u914d\u7f6e\u6587\u4ef6<\/span><\/h3>\n
\n
\n
[root@lb01 scripts]# cat  \/etc\/keepalived\/keepalived.conf\n! Configuration File for keepalived\nglobal_defs {\n   router_id lb01\n}\nvrrp_script check {\n   script \\\"\/server\/scripts\/check_www.sh\\\"\n   interval 2\n   weight 2\n}\nvrrp_instance VI_1 {\n    state MASTER\n    interface eth0\n    virtual_router_id 51\n    priority 150\n    advert_int 1\n    authentication {\n        auth_type PASS\n        auth_pass 1111\n    }\n    virtual_ipaddress {\n        10.0.0.3\/24 dev eth0 label eth0:1\n    }\n    track_script {\n       check\n    }\n}\nvrrp_instance VI_2 {\n    state BACKUP\n    interface eth0\n    virtual_router_id 52\n    priority 100\n    advert_int 1\n    authentication {\n        auth_type PASS\n        auth_pass 1111\n    }\n    virtual_ipaddress {\n        10.0.0.4\/24 dev eth0 label eth0:2\n    }\n}<\/pre>\n<\/div>\n<\/div>\n
2.7.2 \u4fee\u6539lb02\u7684keepalived\u914d\u7f6e\u6587\u4ef6<\/span><\/h3>\n
\n
\n
[root@lb02 conf]# cat \/etc\/keepalived\/keepalived.conf\n! Configuration File for keepalived\nglobal_defs {\n   router_id lb02\n}\nvrrp_instance VI_1 {\n    state BACKUP\n    interface eth0\n    virtual_router_id 51\n    priority 100\n    advert_int 1\n    authentication {\n        auth_type PASS\n        auth_pass 1111\n    }\n    virtual_ipaddress {\n     10.0.0.3 dev eth0 label eth0:1\n    }\n}\nvrrp_instance VI_2 {\n    state MASTER\n    interface eth0\n    virtual_router_id 52\n    priority 150\n    advert_int 1\n    authentication {\n        auth_type PASS\n        auth_pass 1111\n    }\n    virtual_ipaddress {\n     10.0.0.4 dev eth0 label eth0:2\n    }\n}<\/pre>\n<\/div>\n<\/div>\n
\u4fee\u6539nginx\u914d\u7f6e\u6587\u4ef6\uff0c\u8ba9bbs \u4e0ewww\u5206\u522b\u76d1\u542c\u4e0d\u540c\u7684ip\u5730\u5740<\/p>\n
\n
\n
worker_processes  1;\nevents {\n    worker_connections  1024;\n}\nhttp {\n    include       mime.types;\n    default_type  application\/octet-stream;\n    sendfile        on;\n    keepalive_timeout  65;\n    upstream server_pools {\n      server 10.0.0.7:80;\n      server 10.0.0.8:80;\n      server 10.0.0.9:80;\n    }\n    server {\n        listen 10.0.0.3:80;\n        server_name www.etiantian.org;\n        location \/ {\n            proxy_pass http:\/\/server_pools;\n            proxy_set_header Host $host;\n            proxy_set_header X-Forwarded-For $remote_addr;\n        }\n    }\n    server {\n        listen 10.0.0.4:80;\n        server_name bbs.etiantian.org;\n        location \/ {\n            proxy_pass http:\/\/server_pools;\n            proxy_set_header Host $host;\n            proxy_set_header X-Forwarded-For $remote_addr;\n        }\n    }\n}<\/pre>\n<\/div>\n<\/div>\n
lb01<\/p>\n
\n
\n
[root@lb01 scripts]# netstat -lntup |grep nginx\ntcp        0      0 10.0.0.3:80                 0.0.0.0:*                   LISTEN      84907\/nginx\ntcp        0      0 10.0.0.4:80                 0.0.0.0:*                   LISTEN      84907\/nginx<\/pre>\n<\/div>\n<\/div>\n
lb02<\/p>\n
\n
\n
[root@lb02 conf]# netstat -lntup |grep nginx\ntcp        0      0 10.0.0.3:80                 0.0.0.0:*                   LISTEN      12258\/nginx\ntcp        0      0 10.0.0.4:80                 0.0.0.0:*                   LISTEN      12258\/nginx<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"
\u7b2c1\u7ae0 keepalived\u670d\u52a1\u8bf4\u660e 1.1 keepalived\u662f\u4ec0\u4e48\uff1f Keepalived\u8f6f\u4ef6\u8d77\u521d\u662f\u4e13\u4e3a …<\/p>\n
  keepalived\u5b9e\u73b0\u670d\u52a1\u9ad8\u53ef\u7528<\/span> \u67e5\u770b\u5168\u6587 »<\/a><\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":""},"categories":[132],"tags":[],"uagb_featured_image_src":{"full":false,"thumbnail":false,"medium":false,"medium_large":false,"large":false,"1536x1536":false,"2048x2048":false,"mailpoet_newsletter_max":false,"woocommerce_thumbnail":false,"woocommerce_single":false,"woocommerce_gallery_thumbnail":false,"shop_catalog":false,"shop_single":false,"shop_thumbnail":false},"uagb_author_info":{"display_name":"weijing","author_link":"http:\/\/www.weijing.co\/?author=4"},"uagb_comment_info":0,"uagb_excerpt":"\u7b2c1\u7ae0 keepalived\u670d\u52a1\u8bf4\u660e 1.1 keepalived\u662f\u4ec0\u4e48\uff1f Keepalived\u8f6f\u4ef6\u8d77\u521d\u662f\u4e13\u4e3a…","_links":{"self":[{"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/posts\/5440"}],"collection":[{"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"http:\/\/www.weijing.co\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=5440"}],"version-history":[{"count":0,"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/posts\/5440\/revisions"}],"wp:attachment":[{"href":"http:\/\/www.weijing.co\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=5440"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.weijing.co\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=5440"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.weijing.co\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=5440"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}