{"id":5422,"date":"2020-08-02T12:19:44","date_gmt":"2020-08-02T04:19:44","guid":{"rendered":"http:\/\/39.97.231.10\/?p=5422"},"modified":"2020-08-02T12:19:44","modified_gmt":"2020-08-02T04:19:44","slug":"lvs-%e5%ae%89%e8%a3%85%e9%85%8d%e7%bd%ae%e8%af%a6%e8%a7%a3","status":"publish","type":"post","link":"http:\/\/www.weijing.co\/?p=5422","title":{"rendered":"LVS \u5b89\u88c5\u914d\u7f6e\u8be6\u89e3"},"content":{"rendered":"
\n

1.1 \u8d1f\u8f7d\u5747\u8861\u4ecb\u7ecd<\/span><\/h1>\n<\/header>\n
\n
\n

1.1.1\u00a0\u8d1f\u8f7d\u5747\u8861\u7684\u5999\u7528<\/span><\/h3>\n

\u8d1f\u8f7d\u5747\u8861\uff08Load Balance\uff09\u96c6\u7fa4\u63d0\u4f9b\u4e86\u4e00\u79cd\u5ec9\u4ef7\u3001\u6709\u6548\u3001\u900f\u660e\u7684\u65b9\u6cd5\uff0c\u6765\u6269\u5c55\u7f51\u7edc\u8bbe\u5907\u548c\u670d\u52a1\u5668\u7684\u8d1f\u8f7d\u3001\u5e26\u5bbd\u3001\u589e\u52a0\u541e\u5410\u91cf\u3001\u52a0\u5f3a\u7f51\u7edc\u6570\u636e\u5904\u7406\u80fd\u529b\u3001\u63d0\u9ad8\u7f51\u7edc\u7684\u7075\u6d3b\u6027\u548c\u53ef\u7528\u6027\u3002
\n\u00fc\u00a0\u5355\u53f0\u8ba1\u7b97\u673a\u65e0\u6cd5\u627f\u53d7\u5927\u89c4\u6a21\u7684\u5e76\u53d1\u8bbf\u95ee\u6216\u6570\u636e\u6d41\u91cf\u4e86\uff0c\u6b64\u65f6\u9700\u8981\u642d\u5efa\u8d1f\u8f7d\u5747\u8861\u96c6\u7fa4\u628a\u6d41\u91cf\u5206\u644a\u5230\u591a\u53f0\u8282\u70b9\u8bbe\u5907\u4e0a\u5206\u522b\u5904\u7406\uff0c\u5373\u51cf\u5c11\u7528\u6237\u7b49\u5f85\u54cd\u5e94\u7684\u65f6\u95f4\u53c8\u63d0\u5347\u4e86\u7528\u6237\u4f53\u9a8c\uff1b
\n\u00fc\u00a07*24\u5c0f\u65f6\u7684\u670d\u52a1\u4fdd\u8bc1\uff0c\u4efb\u610f\u4e00\u4e2a\u6216\u591a\u4e2a\u6709\u9650\u540e\u7aef\u8282\u70b9\u8bbe\u5907\u5b95\u673a\uff0c\u4e0d\u80fd\u5f71\u54cd\u6574\u4e2a\u4e1a\u52a1\u7684\u8fd0\u884c\u3002<\/p>\n

1.1.2\u00a0\u4e3a\u4ec0\u4e48\u8981\u7528lvs<\/span><\/h3>\n

n\u00a0\u5de5\u4f5c\u5728\u7f51\u7edc\u6a21\u578b\u76847\u5c42\uff0c\u53ef\u4ee5\u9488\u5bf9http\u5e94\u7528\u505a\u4e00\u4e9b\u5206\u6d41\u7684\u7b56\u7565\uff0c\u6bd4\u5982\u9488\u5bf9\u57df\u540d\u3001\u76ee\u5f55\u7ed3\u6784\uff0cNginx\u5355\u51ed\u8fd9\u70b9\u53ef\u5229\u7528\u7684\u573a\u5408\u5c31\u8fdc\u591a\u4e8eLVS\u4e86\u3002
\nn\u00a0\u6700\u65b0\u7248\u672c\u7684Nginx\u4e5f\u652f\u63014\u5c42TCP\u8d1f\u8f7d\uff0c\u66fe\u7ecf\u8fd9\u662fLVS\u6bd4Nginx\u597d\u7684\u5730\u65b9\u3002
\nn\u00a0Nginx\u5bf9\u7f51\u7edc\u7a33\u5b9a\u6027\u7684\u4f9d\u8d56\u975e\u5e38\u5c0f\uff0c\u7406\u8bba\u4e0a\u80fdping\u901a\u5c31\u5c31\u80fd\u8fdb\u884c\u8d1f\u8f7d\u529f\u80fd\uff0c\u8fd9\u4e2a\u4e5f\u662f\u5b83\u7684\u4f18\u52bf\u4e4b\u4e00\uff0c\u76f8\u53cdLVS\u5bf9\u7f51\u7edc\u7a33\u5b9a\u6027\u4f9d\u8d56\u6bd4\u8f83\u5927\u3002
\nn\u00a0Nginx\u5b89\u88c5\u548c\u914d\u7f6e\u6bd4\u8f83\u7b80\u5355\uff0c\u6d4b\u8bd5\u8d77\u6765\u6bd4\u8f83\u65b9\u4fbf\uff0c\u5b83\u57fa\u672c\u80fd\u628a\u9519\u8bef\u7528\u65e5\u5fd7\u6253\u5370\u51fa\u6765\u3002LVS\u7684\u914d\u7f6e\u3001\u6d4b\u8bd5\u5c31\u8981\u82b1\u6bd4\u8f83\u957f\u7684\u65f6\u95f4\u4e86\uff0cLVS\u5bf9\u7f51\u7edc\u4f9d\u8d56\u6bd4\u8f83\u5927\u3002
\n\u90a3\u4e3a\u4ec0\u4e48\u8981\u7528lvs<\/strong>\u5462\uff1f<\/strong>
\n\u7b80\u5355\u4e00\u53e5\u8bdd\uff0c\u5f53\u5e76\u53d1\u8d85\u8fc7\u4e86Nginx\u4e0a\u9650\uff0c\u5c31\u53ef\u4ee5\u4f7f\u7528LVS\u4e86\u3002
\n\u65e51000-2000W PV\u6216\u5e76\u53d1\u8bf7\u6c421\u4e07\u4ee5\u4e0b\u90fd\u53ef\u4ee5\u8003\u8651\u7528Nginx\u3002
\n\u5927\u578b\u95e8\u6237\u7f51\u7ad9\uff0c\u7535\u5546\u7f51\u7ad9\u9700\u8981\u7528\u5230LVS\u3002<\/p>\n

1.2 LVS\u4ecb\u7ecd<\/span><\/h2>\n

LVS\u662fLinux Virtual Server\u7684\u7b80\u5199\uff0c\u610f\u5373Linux\u865a\u62df\u670d\u52a1\u5668\uff0c\u662f\u4e00\u4e2a\u865a\u62df\u7684\u670d\u52a1\u5668\u96c6\u7fa4\u7cfb\u7edf\uff0c\u53ef\u4ee5\u5728UNIX\/LINUX\u5e73\u53f0\u4e0b\u5b9e\u73b0\u8d1f\u8f7d\u5747\u8861\u96c6\u7fa4\u529f\u80fd\u3002\u8be5\u9879\u76ee\u57281998\u5e745\u6708\u7531\u7ae0\u6587\u5d69\u535a\u58eb\u7ec4\u7ec7\u6210\u7acb\uff0c\u662f\u4e2d\u56fd\u56fd\u5185\u6700\u65e9\u51fa\u73b0\u7684\u81ea\u7531\u8f6f\u4ef6\u9879\u76ee\u4e4b\u4e00<\/em><\/strong>\u3002<\/p>\n

1.2.1\u00a0\u76f8\u5173\u53c2\u8003\u8d44\u6599<\/span><\/h3>\n

LVS\u5b98\u7f51\uff1ahttp:\/\/www.linuxvirtualserver.org\/index.html<\/em>
\n\u76f8\u5173\u4e2d\u6587\u8d44\u6599<\/em><\/p>\n

\n
LVS\u9879\u76ee\u4ecb\u7ecd           http:\/\/www.linuxvirtualserver.org\/zh\/lvs1.html\nLVS\u96c6\u7fa4\u7684\u4f53\u7cfb\u7ed3\u6784     http:\/\/www.linuxvirtualserver.org\/zh\/lvs2.html\nLVS\u96c6\u7fa4\u4e2d\u7684IP\u8d1f\u8f7d\u5747\u8861\u6280\u672f  http:\/\/www.linuxvirtualserver.org\/zh\/lvs3.html\nLVS\u96c6\u7fa4\u7684\u8d1f\u8f7d\u8c03\u5ea6      http:\/\/www.linuxvirtualserver.org\/zh\/lvs4.html<\/pre>\n<\/div>\n
1.2.2 LVS\u5185\u6838\u6a21\u5757ip_vs\u4ecb\u7ecd<\/span><\/h3>\n
\u65e9\u57282.2\u5185\u6838\u65f6\uff0c\u00a0IPVS\u5c31\u5df2\u7ecf\u4ee5\u5185\u6838\u8865\u4e01\u7684\u5f62\u5f0f\u51fa\u73b0\u3002
\n\u4ece2.4.23\u7248\u672c\u5f00\u59cb\uff0cIPVS\u8f6f\u4ef6\u5c31\u5408\u5e76\u5230Linux\u5185\u6838\u7684\u5e38\u7528\u7248\u672c\u7684\u5185\u6838\u8865\u4e01\u7684\u96c6\u5408\u3002
\n\u4ece2.4.24<\/strong>\u4ee5\u540eIPVS\u5df2\u7ecf\u6210\u4e3aLinux\u5b98\u65b9\u6807\u51c6\u5185\u6838\u7684\u4e00\u90e8\u5206\u3002<\/p>\n
\\\"\u9ad8\u5e76\u53d1\u573a\u666f<\/p>\n
\u00fc\u00a0LVS\u65e0\u9700\u5b89\u88c5
\n\u00fc\u00a0\u5b89\u88c5\u7684\u662f\u7ba1\u7406\u5de5\u5177\uff0c\u7b2c\u4e00\u79cd\u53ebipvsadm\uff0c\u7b2c\u4e8c\u79cd\u53ebkeepalive
\n\u00fc\u00a0ipvsadm\u662f\u901a\u8fc7\u547d\u4ee4\u884c\u7ba1\u7406\uff0c\u800ckeepalive\u8bfb\u53d6\u914d\u7f6e\u6587\u4ef6\u7ba1\u7406
\n\u00fc\u00a0\u540e\u9762\u6211\u4eec\u4f1a\u7528Shell\u811a\u672c\u5b9e\u73b0keepalive\u7684\u529f\u80fd<\/p>\n
1.3 LVS\u96c6\u7fa4\u642d\u5efa<\/span><\/h2>\n
1.3.1\u00a0\u96c6\u7fa4\u73af\u5883\u8bf4\u660e<\/span><\/h3>\n\n\n\n\n\n\n\n
\n
\u4e3b\u673a\u540d<\/strong><\/p>\n<\/td>\n
\n
IP<\/strong>\u5730\u5740<\/strong><\/p>\n<\/td>\n
\n
\u8f6f\u4ef6<\/strong><\/p>\n<\/td>\n
\n
\u7cfb\u7edf\u7248\u672c<\/strong><\/p>\n<\/td>\n<\/tr>\n
\n
lb03<\/strong><\/p>\n<\/td>\n
\n
10.0.0.15<\/p>\n<\/td>\n
\n
lvs keepalived<\/p>\n<\/td>\n
\n
CentOS Linux release 7.4.1708<\/p>\n<\/td>\n<\/tr>\n
\n
lb04<\/strong><\/p>\n<\/td>\n
\n
10.0.0.16<\/p>\n<\/td>\n
\n
lvs keepalived<\/p>\n<\/td>\n
\n
CentOS Linux release 7.4.1708<\/p>\n<\/td>\n<\/tr>\n
\n
web03<\/strong><\/p>\n<\/td>\n
\n
10.0.0.18<\/p>\n<\/td>\n
\n
tomcat<\/p>\n<\/td>\n
\n
CentOS Linux release 7.4.1708<\/p>\n<\/td>\n<\/tr>\n
\n
web04<\/strong><\/p>\n<\/td>\n
\n
10.0.0.17<\/p>\n<\/td>\n
\n
tomcat<\/p>\n<\/td>\n
\n
CentOS Linux release 7.4.1708<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\u4e3b\u673a\u8bf4\u660e<\/em><\/p>\n
\n
[root@lb03 ~]# cat \/etc\/redhat-release\nCentOS Linux release 7.4.1708 (Core)\n[root@lb03 ~]# uname -a\nLinux lb03 3.10.0-693.el7.x86_64 #1 SMP Tue Aug 22 21:09:27 UTC 2017 x86_64 x86_64 x86_64 GNU\/Linux\n[root@lb03 ~]# systemctl status firewalld.service\n\u25cf firewalld.service - firewalld - dynamic firewall daemon\n   Loaded: loaded (\/usr\/lib\/systemd\/system\/firewalld.service; disabled; vendor preset: enabled)\n   Active: inactive (dead)\n     Docs: man:firewalld(1)\n[root@lb03 ~]# getenforce\nDisabled<\/pre>\n<\/div>\n
web<\/em>\u73af\u5883\u8bf4\u660e<\/em><\/p>\n
\n
[root@lb03 ~]# curl 10.0.0.17\nweb03\n[root@lb03 ~]# curl 10.0.0.18\nweb04<\/pre>\n<\/div>\n
web\u670d\u52a1\u5668\u7684\u642d\u5efa\u53c2\u7167\uff1a Tomcat\uff1a\u00a0http:\/\/www.cnblogs.com\/clsn\/p\/7904611.html<\/i><\/a>
\nNginx\uff1a\u00a0http:\/\/www.cnblogs.com\/clsn\/p\/7750615.html<\/i><\/a><\/p>\n
1.3.2\u00a0\u5b89\u88c5ipvsadm\u7ba1\u7406\u5de5\u5177<\/span><\/h3>\n
\u5b89\u88c5\u7ba1\u7406\u5de5\u5177<\/p>\n
\n
yum -y install ipvsadm<\/pre>\n<\/div>\n
\u67e5\u770b\u5f53\u524dLVS\u72b6\u6001\uff0c\u987a\u4fbf\u6fc0\u6d3bLVS\u5185\u6838\u6a21\u5757\u3002<\/p>\n
\n
ipvsadm<\/pre>\n<\/div>\n
\u67e5\u770b\u7cfb\u7edf\u7684LVS\u6a21\u5757\u3002<\/p>\n
\n
[root@lb03 ~]# lsmod|grep ip_vs\nip_vs_wrr              12697  1\nip_vs                 141092  3 ip_vs_wrr\nnf_conntrack          133387  1 ip_vs\nlibcrc32c              12644  3 xfs,ip_vs,nf_conntrack<\/pre>\n<\/div>\n
1.3.3 LVS\u96c6\u7fa4\u642d\u5efa<\/span><\/h3>\n
\n\u914d\u7f6eLVS\u8d1f\u8f7d\u5747\u8861\u670d\u52a1\uff08\u5728<\/em>lb03<\/em>\u64cd\u4f5c<\/em>\uff09
\n\u6b65\u9aa41\uff1a\u5728eth0\u7f51\u5361\u7ed1\u5b9aVIP\u5730\u5740\uff08ip\uff09
\n\u6b65\u9aa42\uff1a\u6e05\u9664\u5f53\u524d\u6240\u6709LVS\u89c4\u5219\uff08-C\uff09
\n\u6b65\u9aa43\uff1a\u8bbe\u7f6etcp\u3001tcpfin\u3001udp\u94fe\u63a5\u8d85\u65f6\u65f6\u95f4\uff08–set\uff09
\n\u6b65\u9aa44\uff1a\u6dfb\u52a0\u865a\u62df\u670d\u52a1\uff08-A\uff09\uff0c-t\u6307\u5b9a\u865a\u62df\u670d\u52a1\u7684IP\u7aef\u53e3\uff0c-s\u00a0\u6307\u5b9a\u8c03\u5ea6\u7b97\u6cd5\u00a0\u8c03\u5ea6\u7b97\u6cd5\u89c1man ipvsadm\uff0c\u00a0rr wrr\u00a0\u6743\u91cd\u8f6e\u8be2\u00a0-p\u00a0\u6307\u5b9a\u8d85\u65f6\u65f6\u95f4
\n\u6b65\u9aa45\uff1a\u5c06\u865a\u62df\u670d\u52a1\u5173\u8054\u5230\u771f\u5b9e\u670d\u52a1\u4e0a\uff08-a\uff09\u00a0-r\u6307\u5b9a\u771f\u5b9e\u670d\u52a1\u7684IP\u7aef\u53e3\u00a0-g LVS\u7684\u6a21\u5f0f\u00a0DR\u6a21\u5f0f\u00a0-w\u00a0\u6307\u5b9a\u6743\u91cd
\n\u6b65\u9aa46\uff1a\u67e5\u770b\u914d\u7f6e\u7ed3\u679c\uff08-ln\uff09\n<\/div>\n
\u547d\u4ee4\u96c6<\/em><\/strong>\uff1a<\/strong><\/p>\n
\n
ip addr add 10.0.0.13\/24 dev eth0\nipvsadm -C\nipvsadm --set 30 5 60\nipvsadm -A -t 10.0.0.13:80 -s wrr -p 20\nipvsadm -a -t 10.0.0.13:80 -r 10.0.0.17:80 -g -w 1\nipvsadm -a -t 10.0.0.13:80 -r 10.0.0.18:80 -g -w 1\nipvsadm -ln<\/pre>\n<\/div>\n
\u68c0\u67e5\u7ed3\u679c<\/em><\/strong>\uff1a<\/strong><\/p>\n
\n
[root@lb03 ~]# ipvsadm -ln\nIP Virtual Server version 1.2.1 (size=4096)\nProt LocalAddress:Port Scheduler Flags\n  -> RemoteAddress:Port           Forward Weight ActiveConn InActConn\nTCP  10.0.0.13:80 wrr persistent 20\n  -> 10.0.0.17:80                 Route   1      0          0\n  -> 10.0.0.18:80                 Route   1      0          0<\/pre>\n<\/div>\n
ipvsadm<\/em><\/strong>\u53c2\u6570\u8bf4\u660e\uff1a<\/em>(<\/strong>\u66f4\u591a\u53c2\u7167\u00a0man ipvsadm)<\/strong><\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\n
\u53c2\u6570<\/strong><\/p>\n
(<\/em><\/strong>\u77ed\u683c\u5f0f<\/em><\/strong>)<\/em><\/strong><\/p>\n<\/td>\n
\n
\u53c2\u6570<\/strong><\/p>\n
(<\/em><\/strong>\u957f\u683c\u5f0f<\/em><\/strong>)<\/em><\/strong><\/p>\n<\/td>\n
\n
\u53c2\u6570\u8bf4\u660e<\/strong><\/p>\n<\/td>\n<\/tr>\n
\n
-A<\/strong><\/p>\n<\/td>\n
–add-service<\/td>\n\u5728\u5185\u6838\u7684\u865a\u62df\u670d\u52a1\u5668\u8868\u4e2d\u6dfb\u52a0\u4e00\u6761\u65b0\u7684\u865a\u62df\u670d\u52a1\u5668\u8bb0\u5f55\u3002\u4e5f\u5c31\u662f\u589e\u52a0\u4e00\u53f0\u65b0\u7684\u865a\u62df\u670d\u52a1\u5668\u3002<\/td>\n<\/tr>\n
\n
-E<\/strong><\/p>\n<\/td>\n
–edit-service<\/td>\n\u7f16\u8f91\u5185\u6838\u865a\u62df\u670d\u52a1\u5668\u8868\u4e2d\u7684\u4e00\u6761\u865a\u62df\u670d\u52a1\u5668\u8bb0\u5f55\u3002<\/td>\n<\/tr>\n
\n
-D<\/strong><\/p>\n<\/td>\n
–delete-service<\/td>\n\u5220\u9664\u5185\u6838\u865a\u62df\u670d\u52a1\u5668\u8868\u4e2d\u7684\u4e00\u6761\u865a\u62df\u670d\u52a1\u5668\u8bb0\u5f55\u3002<\/td>\n<\/tr>\n
\n
-C<\/strong><\/p>\n<\/td>\n
–clear<\/td>\n\u6e05\u9664\u5185\u6838\u865a\u62df\u670d\u52a1\u5668\u8868\u4e2d\u7684\u6240\u6709\u8bb0\u5f55\u3002<\/td>\n<\/tr>\n
\n
-R<\/strong><\/p>\n<\/td>\n
–restore<\/td>\n\u6062\u590d\u865a\u62df\u670d\u52a1\u5668\u89c4\u5219<\/td>\n<\/tr>\n
\n
-S<\/strong><\/p>\n<\/td>\n
–save<\/td>\n\u4fdd\u5b58\u865a\u62df\u670d\u52a1\u5668\u89c4\u5219\uff0c\u8f93\u51fa\u4e3a-R\u00a0\u9009\u9879\u53ef\u8bfb\u7684\u683c\u5f0f<\/td>\n<\/tr>\n
\n
-a<\/strong><\/p>\n<\/td>\n
–add-server<\/td>\n\u5728\u5185\u6838\u865a\u62df\u670d\u52a1\u5668\u8868\u7684\u4e00\u6761\u8bb0\u5f55\u91cc\u6dfb\u52a0\u4e00\u6761\u65b0\u7684\u771f\u5b9e\u670d\u52a1\u5668\u8bb0\u5f55\u3002\u4e5f\u5c31\u662f\u5728\u4e00\u4e2a\u865a\u62df\u670d\u52a1\u5668\u4e2d\u589e\u52a0\u4e00\u53f0\u65b0\u7684\u771f\u5b9e\u670d\u52a1\u5668<\/td>\n<\/tr>\n
\n
-e<\/strong><\/p>\n<\/td>\n
–edit-server<\/td>\n\u7f16\u8f91\u4e00\u6761\u865a\u62df\u670d\u52a1\u5668\u8bb0\u5f55\u4e2d\u7684\u67d0\u6761\u771f\u5b9e\u670d\u52a1\u5668\u8bb0\u5f55<\/td>\n<\/tr>\n
\n
-d<\/strong><\/p>\n<\/td>\n
–delete-server<\/td>\n\u5220\u9664\u4e00\u6761\u865a\u62df\u670d\u52a1\u5668\u8bb0\u5f55\u4e2d\u7684\u67d0\u6761\u771f\u5b9e\u670d\u52a1\u5668\u8bb0\u5f55<\/td>\n<\/tr>\n
\n
-L|-l<\/strong><\/p>\n<\/td>\n
–list<\/td>\n\u663e\u793a\u5185\u6838\u865a\u62df\u670d\u52a1\u5668\u8868<\/td>\n<\/tr>\n
\n
-Z<\/strong><\/p>\n<\/td>\n
–zero<\/td>\n\u865a\u62df\u670d\u52a1\u8868\u8ba1\u6570\u5668\u6e05\u96f6\uff08\u6e05\u7a7a\u5f53\u524d\u7684\u8fde\u63a5\u6570\u91cf\u7b49\uff09<\/td>\n<\/tr>\n
\n
–<\/strong><\/p>\n<\/td>\n
–set\u00a0tcp tcpfin udp<\/em><\/td>\n\u8bbe\u7f6e\u8fde\u63a5\u8d85\u65f6\u503c<\/td>\n<\/tr>\n
\n
–<\/strong><\/p>\n<\/td>\n
–start-daemon<\/td>\n\u542f\u52a8\u540c\u6b65\u5b88\u62a4\u8fdb\u7a0b\u3002\u4ed6\u540e\u9762\u53ef\u4ee5\u662fmaster\u00a0\u6216backup\uff0c\u7528\u6765\u8bf4\u660eLVS Router\u00a0\u662fmaster\u00a0\u6216\u662fbackup\u3002\u5728\u8fd9\u4e2a\u529f\u80fd\u4e0a\u4e5f\u53ef\u4ee5\u91c7\u7528keepalived\u00a0\u7684VRRP\u00a0\u529f\u80fd\u3002<\/td>\n<\/tr>\n
\n
–<\/strong><\/p>\n<\/td>\n
–stop-daemon<\/td>\n\u505c\u6b62\u540c\u6b65\u5b88\u62a4\u8fdb\u7a0b<\/td>\n<\/tr>\n
\n
-h<\/strong><\/p>\n<\/td>\n
–help<\/td>\n\u663e\u793a\u5e2e\u52a9\u4fe1\u606f<\/td>\n<\/tr>\n
\n
-t<\/strong><\/p>\n<\/td>\n
–tcp-service\u00a0service-address [vip:port] or [real-server-ip:port]<\/em><\/td>\n\u8bf4\u660e\u865a\u62df\u670d\u52a1\u5668\u63d0\u4f9b\u7684\u662ftcp\u00a0\u7684\u670d\u52a1<\/td>\n<\/tr>\n
\n
-u<\/strong><\/p>\n<\/td>\n
–udp-service\u00a0service-address [vip:port] or [real-server-ip:port]<\/em><\/td>\n\u8bf4\u660e\u865a\u62df\u670d\u52a1\u5668\u63d0\u4f9b\u7684\u662fudp\u00a0\u7684\u670d\u52a1<\/td>\n<\/tr>\n
\n
-f<\/strong><\/p>\n<\/td>\n
–fwmark-service\u00a0fwmark<\/em><\/td>\n\u8bf4\u660e\u662f\u7ecf\u8fc7iptables\u00a0\u6807\u8bb0\u8fc7\u7684\u670d\u52a1\u7c7b\u578b\u3002<\/td>\n<\/tr>\n
\n
-s<\/strong><\/p>\n<\/td>\n
–scheduler\u00a0scheduler<\/em><\/td>\n\u4f7f\u7528\u7684\u8c03\u5ea6\u7b97\u6cd5\uff0c\u6709\u8fd9\u6837\u51e0\u4e2a\u9009\u9879
\nrr|wrr|lc|wlc|lblc|lblcr|dh|sh|sed|nq
\n\u9ed8\u8ba4\u7684\u8c03\u5ea6\u7b97\u6cd5\u662f\uff1a\u00a0wlc<\/td>\n<\/tr>\n
\n
-p<\/strong><\/p>\n<\/td>\n
–persistent\u00a0[timeout]<\/em><\/td>\n\u6301\u4e45\u7a33\u56fa\u7684\u670d\u52a1\u3002\u8fd9\u4e2a\u9009\u9879\u7684\u610f\u601d\u662f\u6765\u81ea\u540c\u4e00\u4e2a\u5ba2\u6237\u7684\u591a\u6b21\u8bf7\u6c42\uff0c\u5c06\u88ab\u540c\u4e00\u53f0\u771f\u5b9e\u7684\u670d\u52a1\u5668\u5904\u7406\u3002timeout\u00a0\u7684\u9ed8\u8ba4\u503c\u4e3a300\u79d2\u3002<\/td>\n<\/tr>\n
\n
-M<\/strong><\/p>\n<\/td>\n
–netmask netmask<\/td>\npersistent granularity mask<\/td>\n<\/tr>\n
\n
-r<\/strong><\/p>\n<\/td>\n
–real-server\u00a0server-address<\/em><\/td>\n\u771f\u5b9e\u7684\u670d\u52a1\u5668[Real-Server:port]<\/td>\n<\/tr>\n
\n
-g<\/strong><\/p>\n<\/td>\n
–gatewaying<\/td>\n\u6307\u5b9aLVS\u00a0\u7684\u5de5\u4f5c\u6a21\u5f0f\u4e3a\u76f4\u63a5\u8def\u7531\u6a21\u5f0f\uff08\u4e5f\u662fLVS\u00a0\u9ed8\u8ba4\u7684\u6a21\u5f0f\uff09<\/td>\n<\/tr>\n
\n
-i<\/strong><\/p>\n<\/td>\n
–ipip<\/td>\n\u6307\u5b9aLVS\u00a0\u7684\u5de5\u4f5c\u6a21\u5f0f\u4e3a\u96a7\u9053\u6a21\u5f0f<\/td>\n<\/tr>\n
\n
-m<\/strong><\/p>\n<\/td>\n
–masquerading<\/td>\n\u6307\u5b9aLVS\u00a0\u7684\u5de5\u4f5c\u6a21\u5f0f\u4e3aNAT\u00a0\u6a21\u5f0f<\/td>\n<\/tr>\n
\n
-w<\/strong><\/p>\n<\/td>\n
–weight\u00a0weight<\/em><\/td>\n\u771f\u5b9e\u670d\u52a1\u5668\u7684\u6743\u503c<\/td>\n<\/tr>\n
\n
–<\/strong><\/p>\n<\/td>\n
–mcast-interface<\/td>\ninterface\u00a0\u6307\u5b9a\u7ec4\u64ad\u7684\u540c\u6b65\u63a5\u53e3<\/td>\n<\/tr>\n
\n
-c<\/strong><\/p>\n<\/td>\n
–connection<\/td>\n\u663e\u793aLVS\u00a0\u76ee\u524d\u7684\u8fde\u63a5\u00a0\u5982\uff1aipvsadm -L -c<\/td>\n<\/tr>\n
\n
–<\/strong><\/p>\n<\/td>\n
–timeout<\/td>\n\u663e\u793atcp tcpfin udp\u00a0\u7684timeout\u00a0\u503c\u00a0\u5982\uff1aipvsadm -L –timeout<\/td>\n<\/tr>\n
\n
–<\/strong><\/p>\n<\/td>\n
–daemon<\/td>\n\u663e\u793a\u540c\u6b65\u5b88\u62a4\u8fdb\u7a0b\u72b6\u6001<\/td>\n<\/tr>\n
\n
–<\/strong><\/p>\n<\/td>\n
–stats<\/td>\n\u663e\u793a\u7edf\u8ba1\u4fe1\u606f<\/td>\n<\/tr>\n
\n
–<\/strong><\/p>\n<\/td>\n
–rate<\/td>\n\u663e\u793a\u901f\u7387\u4fe1\u606f<\/td>\n<\/tr>\n
\n
–<\/strong><\/p>\n<\/td>\n
–sort<\/td>\n\u5bf9\u865a\u62df\u670d\u52a1\u5668\u548c\u771f\u5b9e\u670d\u52a1\u5668\u6392\u5e8f\u8f93\u51fa<\/td>\n<\/tr>\n
\n
–<\/strong><\/p>\n<\/td>\n
–numeric -n<\/td>\n\u8f93\u51faIP\u00a0\u5730\u5740\u548c\u7aef\u53e3\u7684\u6570\u5b57\u5f62\u5f0f<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
1.3.4\u00a0\u5728web\u6d4f\u89c8\u5668\u914d\u7f6e\u64cd\u4f5c<\/span><\/h3>\n
\n\u6b65\u9aa41\uff1a\u5728lo\u7f51\u5361\u7ed1\u5b9aVIP\u5730\u5740\uff08ip\uff09
\n\u6b65\u9aa42\uff1a\u4fee\u6539\u5185\u6838\u53c2\u6570\u6291\u5236ARP\u54cd\u5e94\n<\/div>\n
\u547d\u4ee4\u96c6<\/em>\uff1a<\/p>\n
\n
ip addr add 10.0.0.13\/32 dev lo\ncat >>\/etc\/sysctl.conf<<EOF\nnet.ipv4.conf.all.arp_ignore = 1\nnet.ipv4.conf.all.arp_announce = 2\nnet.ipv4.conf.lo.arp_ignore = 1\nnet.ipv4.conf.lo.arp_announce = 2\nEOF\nsysctl -p<\/pre>\n<\/div>\n
\u81f3\u6b64LVS<\/em><\/strong>\u96c6\u7fa4\u914d\u7f6e\u5b8c\u6bd5<\/em><\/strong>\uff01<\/strong><\/p>\n
1.3.5\u00a0\u8fdb\u884c\u8bbf\u95ee\u6d4b\u8bd5<\/span><\/h3>\n
\u6d4f\u89c8\u5668\u8bbf\u95ee\uff1a<\/em><\/p>\n
\\\"\u9ad8\u5e76\u53d1\u573a\u666f<\/p>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u547d\u4ee4\u884c\u6d4b\u8bd5\uff1a<\/em><\/p>\n
\n
[root@lb04 ~]# curl 10.0.0.13\nweb03<\/pre>\n<\/div>\n
\u6293\u5305\u67e5\u770b\u7ed3\u679c\uff1a<\/em><\/p>\n
\\\"\u9ad8\u5e76\u53d1\u573a\u666f<\/p>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0arp<\/em>\u89e3\u6790\u67e5\u770b\uff1a<\/em><\/p>\n
\n
[root@lb04 ~]# arp -n\nAddress                  HWtype  HWaddress           Flags Mask            Iface\n10.0.0.254               ether   00:50:56:e9:9f:2c   C                     eth0\n10.0.0.18                ether   00:0c:29:ea:ca:55   C                     eth0\n10.0.0.13                ether   00:0c:29:de:7c:97   C                     eth0\n172.16.1.15              ether   00:0c:29:de:7c:a1   C                     eth1\n10.0.0.17                ether   00:0c:29:4a:ac:4a   C                     eth0<\/pre>\n<\/div>\n
1.4\u00a0\u8d1f\u8f7d\u5747\u8861\uff08LVS\uff09\u76f8\u5173\u540d\u8bcd<\/span><\/h2>\n
\\\"\u9ad8\u5e76\u53d1\u573a\u666f<\/p>\n
\u672f\u8bed\u8bf4\u660e\uff1a<\/em><\/p>\n
\n
DS\uff1aDirector Server\u3002\u6307\u7684\u662f\u524d\u7aef\u8d1f\u8f7d\u5747\u8861\u5668\u8282\u70b9\u3002\nRS\uff1aReal Server\u3002\u540e\u7aef\u771f\u5b9e\u7684\u5de5\u4f5c\u670d\u52a1\u5668\u3002\nVIP\uff1a\u5411\u5916\u90e8\u76f4\u63a5\u9762\u5411\u7528\u6237\u8bf7\u6c42\uff0c\u4f5c\u4e3a\u7528\u6237\u8bf7\u6c42\u7684\u76ee\u6807\u7684IP\u5730\u5740\u3002\nDIP\uff1aDirector Server IP\uff0c\u4e3b\u8981\u7528\u4e8e\u548c\u5185\u90e8\u4e3b\u673a\u901a\u8baf\u7684IP\u5730\u5740\u3002\nRIP\uff1aReal Server IP\uff0c\u540e\u7aef\u670d\u52a1\u5668\u7684IP\u5730\u5740\u3002\nCIP\uff1aClient IP\uff0c\u8bbf\u95ee\u5ba2\u6237\u7aef\u7684IP\u5730\u5740\u3002<\/pre>\n<\/div>\n
1.4.1 LVS\u96c6\u7fa4\u7684\u5de5\u4f5c\u6a21\u5f0f–DR\u76f4\u63a5\u8def\u7531\u6a21\u5f0f<\/span><\/h3>\n
DR\u6a21\u5f0f\u662f\u901a\u8fc7\u6539\u5199\u8bf7\u6c42\u62a5\u6587\u7684\u76ee\u6807MAC\u5730\u5740\uff0c\u5c06\u8bf7\u6c42\u53d1\u7ed9\u771f\u5b9e\u670d\u52a1\u5668\u7684\uff0c\u800c\u771f\u5b9e\u670d\u52a1\u5668\u5c06\u54cd\u5e94\u540e\u7684\u5904\u7406\u7ed3\u679c\u76f4\u63a5\u8fd4\u56de\u7ed9\u5ba2\u6237\u7aef\u7528\u6237\u3002
\nDR\u6280\u672f\u53ef\u6781\u5927\u5730\u63d0\u9ad8\u96c6\u7fa4\u7cfb\u7edf\u7684\u4f38\u7f29\u6027\u3002\u4f46\u8981\u6c42\u8c03\u5ea6\u5668LB\u4e0e\u771f\u5b9e\u670d\u52a1\u5668RS\u90fd\u6709\u4e00\u5757\u7269\u7406\u7f51\u5361\u8fde\u5728\u540c\u4e00\u7269\u7406\u7f51\u6bb5\u4e0a\uff0c\u5373\u5fc5\u987b\u5728\u540c\u4e00\u5c40\u57df\u7f51\u73af\u5883\u3002<\/p>\n
\\\"\u9ad8\u5e76\u53d1\u573a\u666f<\/p>\n
DR<\/em>\u76f4\u63a5\u8def\u7531\u6a21\u5f0f\u8bf4\u660e\uff1a<\/em><\/p>\n
\n
a)\u901a\u8fc7\u5728\u8c03\u5ea6\u5668LB\u4e0a\u4fee\u6539\u6570\u636e\u5305\u7684\u76ee\u7684MAC\u5730\u5740\u5b9e\u73b0\u8f6c\u53d1\u3002\u6ce8\u610f\uff0c\u6e90IP\u5730\u5740\u4ecd\u7136\u662fCIP\uff0c\u76ee\u7684IP\u5730\u5740\u4ecd\u7136\u662fVIP\u3002\nb)\u8bf7\u6c42\u7684\u62a5\u6587\u7ecf\u8fc7\u8c03\u5ea6\u5668\uff0c\u800cRS\u54cd\u5e94\u5904\u7406\u540e\u7684\u62a5\u6587\u65e0\u9700\u7ecf\u8fc7\u8c03\u5ea6\u5668LB\uff0c\u56e0\u6b64\uff0c\u5e76\u53d1\u8bbf\u95ee\u91cf\u5927\u65f6\u4f7f\u7528\u6548\u7387\u5f88\u9ad8\uff0c\u6bd4Nginx\u4ee3\u7406\u6a21\u5f0f\u5f3a\u4e8e\u6b64\u5904\u3002\nc)\u56e0DR\u6a21\u5f0f\u662f\u901a\u8fc7MAC\u5730\u5740\u7684\u6539\u5199\u673a\u5236\u5b9e\u73b0\u8f6c\u53d1\u7684\uff0c\u56e0\u6b64\uff0c\u6240\u6709RS\u8282\u70b9\u548c\u8c03\u5ea6\u5668LB\u53ea\u80fd\u5728\u540c\u4e00\u4e2a\u5c40\u57df\u7f51\u4e2d\u3002\u9700\u8981\u6ce8\u610fRS\u8282\u70b9\u7684VIP\u7684\u7ed1\u5b9a(lo:vip\/32)\u548cARP\u6291\u5236\u95ee\u9898\u3002\nd)\u5f3a\u8c03\u4e0b\uff1aRS\u8282\u70b9\u7684\u9ed8\u8ba4\u7f51\u5173\u4e0d\u9700\u8981\u662f\u8c03\u5ea6\u5668LB\u7684DIP\uff0c\u800c\u5e94\u8be5\u76f4\u63a5\u662fIDC\u673a\u623f\u5206\u914d\u7684\u4e0a\u7ea7\u8def\u7531\u5668\u7684IP(\u8fd9\u662fRS\u5e26\u6709\u5916\u7f51IP\u5730\u5740\u7684\u60c5\u51b5)\uff0c\u7406\u8bba\u4e0a\u8bb2\uff0c\u53ea\u8981RS\u53ef\u4ee5\u51fa\u7f51\u5373\u53ef\uff0c\u4e0d\u9700\u8981\u5fc5\u987b\u914d\u7f6e\u5916\u7f51IP\uff0c\u4f46\u8d70\u81ea\u5df1\u7684\u7f51\u5173\uff0c\u90a3\u7f51\u5173\u5c31\u6210\u4e3a\u74f6\u9888\u4e86\u3002\ne)\u7531\u4e8eDR\u6a21\u5f0f\u7684\u8c03\u5ea6\u5668\u4ec5\u8fdb\u884c\u4e86\u76ee\u7684MAC\u5730\u5740\u7684\u6539\u5199\uff0c\u56e0\u6b64\uff0c\u8c03\u5ea6\u5668LB\u65e0\u6cd5\u6539\u53d8\u8bf7\u6c42\u62a5\u6587\u7684\u76ee\u7684\u7aef\u53e3\u3002LVS DR\u6a21\u5f0f\u7684\u529e\u516c\u5ba4\u5728\u4e8c\u5c42\u6570\u636e\u94fe\u8def\u5c42\uff08MAC\uff09\uff0cNAT\u6a21\u5f0f\u5219\u5de5\u4f5c\u5728\u4e09\u5c42\u7f51\u7edc\u5c42\uff08IP\uff09\u548c\u56db\u5c42\u4f20\u8f93\u5c42\uff08\u7aef\u53e3\uff09\u3002\nf)\u5f53\u524d\uff0c\u8c03\u5ea6\u5668LB\u652f\u6301\u51e0\u4e4e\u6240\u6709UNIX\u3001Linux\u7cfb\u7edf\uff0c\u4f46\u4e0d\u652f\u6301windows\u7cfb\u7edf\u3002\u771f\u5b9e\u670d\u52a1\u5668RS\u8282\u70b9\u53ef\u4ee5\u662fwindows\u7cfb\u7edf\u3002\ng)\u603b\u4e4b\uff0cDR\u6a21\u5f0f\u6548\u7387\u5f88\u9ad8\uff0c\u4f46\u662f\u914d\u7f6e\u4e5f\u8f83\u9ebb\u70e6\u3002\u56e0\u6b64\uff0c\u8bbf\u95ee\u91cf\u4e0d\u662f\u7279\u522b\u5927\u7684\u516c\u53f8\u53ef\u4ee5\u7528haproxy\/Nginx\u53d6\u4ee3\u4e4b\u3002\u8fd9\u7b26\u5408\u8fd0\u7ef4\u7684\u539f\u5219\uff1a\u7b80\u5355\u3001\u6613\u7528\u3001\u9ad8\u6548\u3002\u65e51000-2000W PV\u6216\u5e76\u53d1\u8bf7\u6c421\u4e07\u4ee5\u4e0b\u90fd\u53ef\u4ee5\u8003\u8651\u7528haproxy\/Nginx(LVS\u7684NAT\u6a21\u5f0f)\nh)\u76f4\u63a5\u5bf9\u5916\u7684\u8bbf\u95ee\u4e1a\u52a1\uff0c\u4f8b\u5982web\u670d\u52a1\u505aRS\u8282\u70b9\uff0cRS\u6700\u597d\u7528\u516c\u7f51IP\u5730\u5740\u3002\u5982\u679c\u4e0d\u76f4\u63a5\u5bf9\u5916\u7684\u4e1a\u52a1\uff0c\u4f8b\u5982\uff1aMySQL\uff0c\u5b58\u50a8\u7cfb\u7edfRS\u8282\u70b9\uff0c\u6700\u597d\u53ea\u7528\u5185\u90e8IP\u5730\u5740\u3002<\/pre>\n<\/div>\n
DR<\/strong>\u7684\u5b9e\u73b0\u539f\u7406\u548c\u6570\u636e\u5305\u7684\u6539\u53d8<\/strong><\/p>\n
\\\"\u9ad8\u5e76\u53d1\u573a\u666f<\/p>\n
\n
(a) \u5f53\u7528\u6237\u8bf7\u6c42\u5230\u8fbeDirector Server\uff0c\u6b64\u65f6\u8bf7\u6c42\u7684\u6570\u636e\u62a5\u6587\u4f1a\u5148\u5230\u5185\u6838\u7a7a\u95f4\u7684PREROUTING\u94fe\u3002 \u6b64\u65f6\u62a5\u6587\u7684\u6e90IP\u4e3aCIP\uff0c\u76ee\u6807IP\u4e3aVIP\n(b) PREROUTING\u68c0\u67e5\u53d1\u73b0\u6570\u636e\u5305\u7684\u76ee\u6807IP\u662f\u672c\u673a\uff0c\u5c06\u6570\u636e\u5305\u9001\u81f3INPUT\u94fe\n(c) IPVS\u6bd4\u5bf9\u6570\u636e\u5305\u8bf7\u6c42\u7684\u670d\u52a1\u662f\u5426\u4e3a\u96c6\u7fa4\u670d\u52a1\uff0c\u82e5\u662f\uff0c\u5c06\u8bf7\u6c42\u62a5\u6587\u4e2d\u7684\u6e90MAC\u5730\u5740\u4fee\u6539\u4e3aDIP\u7684MAC\u5730\u5740\uff0c\u5c06\u76ee\u6807MAC\u5730\u5740\u4fee\u6539RIP\u7684MAC\u5730\u5740\uff0c\u7136\u540e\u5c06\u6570\u636e\u5305\u53d1\u81f3POSTROUTING\u94fe\u3002 \u6b64\u65f6\u7684\u6e90IP\u548c\u76ee\u7684IP\u5747\u672a\u4fee\u6539\uff0c\u4ec5\u4fee\u6539\u4e86\u6e90MAC\u5730\u5740\u4e3aDIP\u7684MAC\u5730\u5740\uff0c\u76ee\u6807MAC\u5730\u5740\u4e3aRIP\u7684MAC\u5730\u5740\n(d) \u7531\u4e8eDS\u548cRS\u5728\u540c\u4e00\u4e2a\u7f51\u7edc\u4e2d\uff0c\u6240\u4ee5\u662f\u901a\u8fc7\u4e8c\u5c42\u6765\u4f20\u8f93\u3002POSTROUTING\u94fe\u68c0\u67e5\u76ee\u6807MAC\u5730\u5740\u4e3aRIP\u7684MAC\u5730\u5740\uff0c\u90a3\u4e48\u6b64\u65f6\u6570\u636e\u5305\u5c06\u4f1a\u53d1\u81f3Real Server\u3002\n(e) RS\u53d1\u73b0\u8bf7\u6c42\u62a5\u6587\u7684MAC\u5730\u5740\u662f\u81ea\u5df1\u7684MAC\u5730\u5740\uff0c\u5c31\u63a5\u6536\u6b64\u62a5\u6587\u3002\u5904\u7406\u5b8c\u6210\u4e4b\u540e\uff0c\u5c06\u54cd\u5e94\u62a5\u6587\u901a\u8fc7lo\u63a5\u53e3\u4f20\u9001\u7ed9eth0\u7f51\u5361\u7136\u540e\u5411\u5916\u53d1\u51fa\u3002 \u6b64\u65f6\u7684\u6e90IP\u5730\u5740\u4e3aVIP\uff0c\u76ee\u6807IP\u4e3aCIP\n(f) \u54cd\u5e94\u62a5\u6587\u6700\u7ec8\u9001\u8fbe\u81f3\u5ba2\u6237\u7aef<\/pre>\n<\/div>\n
1.5\u00a0\u5728web\u7aef\u7684\u64cd\u4f5c\u6709\u4ec0\u4e48\u542b\u4e49\uff1f<\/span><\/h2>\n
1.5.1 RealServer\u4e3a\u4ec0\u4e48\u8981\u5728lo\u63a5\u53e3\u4e0a\u914d\u7f6eVIP\uff1f<\/span><\/h3>\n
\u65e2\u7136\u8981\u8ba9RS\u80fd\u591f\u5904\u7406\u76ee\u6807\u5730\u5740\u4e3avip\u7684IP\u5305\uff0c\u9996\u5148\u5fc5\u987b\u8981\u8ba9RS\u80fd\u63a5\u6536\u5230\u8fd9\u4e2a\u5305\u3002
\n\u5728lo\u4e0a\u914d\u7f6evip\u80fd\u591f\u5b8c\u6210\u63a5\u6536\u5305\u5e76\u5c06\u7ed3\u679c\u8fd4\u56declient\u3002<\/p>\n
1.5.2\u00a0\u5728eth0\u7f51\u5361\u4e0a\u914d\u7f6eVIP\u53ef\u4ee5\u5417\uff1f<\/span><\/h3>\n
\u4e0d\u53ef\u4ee5\uff0c\u5c06VIP\u8bbe\u7f6e\u5728eth0\u7f51\u5361\u4e0a,\u4f1a\u5f71\u54cdRS\u7684arp\u8bf7\u6c42,\u9020\u6210\u6574\u4f53LVS\u96c6\u7fa4arp\u7f13\u5b58\u8868\u7d0a\u4e71\uff0c\u4ee5\u81f3\u4e8e\u6574\u4e2a\u8d1f\u8f7d\u5747\u8861\u96c6\u7fa4\u90fd\u4e0d\u80fd\u6b63\u5e38\u5de5\u4f5c\u3002<\/p>\n
1.5.3\u00a0\u4e3a\u4ec0\u4e48\u8981\u6291\u5236ARP\u54cd\u5e94\uff1f<\/span><\/h3>\n
\u2460\u00a0<\/strong>arp<\/strong>\u534f\u8bae\u8bf4\u660e<\/strong><\/p>\n
\nARP\u534f\u8bae,\u5168\u79f0\\”Address Resolution Protocol\\”,\u4e2d\u6587\u540d\u662f\u5730\u5740\u89e3\u6790\u534f\u8bae\uff0c\u4f7f\u7528ARP\u534f\u8bae\u53ef\u5b9e\u73b0\u901a\u8fc7IP\u5730\u5740\u83b7\u5f97\u5bf9\u5e94\u4e3b\u673a\u7684\u7269\u7406\u5730\u5740(MAC\u5730\u5740)\u3002
\nARP\u534f\u8bae\u8981\u6c42\u901a\u4fe1\u7684\u4e3b\u673a\u53cc\u65b9\u5fc5\u987b\u5728\u540c\u4e00\u4e2a\u7269\u7406\u7f51\u6bb5\uff08\u5373\u5c40\u57df\u7f51\u73af\u5883\uff09\uff01\n<\/div>\n
\u4e3a\u4e86\u63d0\u9ad8IP\u8f6c\u6362MAC\u7684\u6548\u7387\uff0c\u7cfb\u7edf\u4f1a\u5c06\u89e3\u6790\u7ed3\u679c\u4fdd\u5b58\u4e0b\u6765\uff0c\u8fd9\u4e2a\u7ed3\u679c\u53eb\u505aARP\u7f13\u5b58\u3002<\/p>\n
\n
Windows\u67e5\u770bARP\u7f13\u5b58\u547d\u4ee4 arp -a\nLinux\u67e5\u770bARP\u7f13\u5b58\u547d\u4ee4 arp -n\nLinux\u89e3\u6790IP\u5bf9\u5e94\u7684MAC\u5730\u5740 arping -c 1 -I eth0 10.0.0.6<\/pre>\n<\/div>\n
ARP<\/em>\u7f13\u5b58\u8868\u662f\u628a\u53cc\u5203\u5251<\/em>
\na)\u00a0\u4e3b\u673a\u6709\u4e86arp\u7f13\u5b58\u8868\uff0c\u53ef\u4ee5\u52a0\u5febARP\u7684\u89e3\u6790\u901f\u5ea6\uff0c\u51cf\u5c11\u5c40\u57df\u7f51\u5185\u5e7f\u64ad\u98ce\u66b4\u3002\u56e0\u4e3aarp\u662f\u53d1\u5e7f\u64ad\u89e3\u6790\u7684\uff0c\u9891\u7e41\u7684\u89e3\u6790\u4e5f\u662f\u6d88\u8017\u5e26\u5bbd\u7684\uff0c\u5c24\u5176\u662f\u673a\u5668\u591a\u7684\u65f6\u5019\u3002
\nb)\u00a0\u6b63\u662f\u6709\u4e86arp\u7f13\u5b58\u8868\uff0c\u7ed9\u6076\u610f\u9ed1\u5ba2\u5e26\u6765\u4e86\u653b\u51fb\u670d\u52a1\u5668\u4e3b\u673a\u7684\u98ce\u9669\uff0c\u8fd9\u4e2a\u5c31\u662farp\u6b3a\u9a97\u653b\u51fb\u3002
\nc)\u00a0\u5207\u6362\u8def\u7531\u5668\uff0c\u8d1f\u8f7d\u5747\u8861\u5668\u7b49\u8bbe\u5907\u65f6\uff0c\u53ef\u80fd\u4f1a\u5bfc\u81f4\u77ed\u65f6\u7f51\u7edc\u4e2d\u65ad\u3002\u56e0\u4e3a\u6240\u6709\u7684\u5ba2\u6237\u7aefARP\u7f13\u5b58\u8868\u6ca1\u6709\u66f4\u65b0
\n\u2461<\/strong>\u670d\u52a1\u5668\u5207\u6362ARP<\/strong>\u95ee\u9898<\/strong><\/p>\n
\n\u3000\u3000\u5f53\u96c6\u7fa4\u4e2d\u4e00\u53f0\u63d0\u4f9b\u670d\u52a1\u7684lb01\u673a\u5668\u5b95\u673a\u540e\uff0c\u7136\u540eVIP\u4f1a\u8f6c\u79fb\u5230\u5907\u673alb02\u4e0a\uff0c\u4f46\u662f\u5ba2\u6237\u7aef\u7684ARP\u7f13\u5b58\u8868\u7684\u5730\u5740\u89e3\u6790\u8fd8\u662f\u5b95\u673a\u7684lb01\u7684MAC\u5730\u5740\u3002\u4ece\u800c\u5bfc\u81f4\uff0c\u5373\u4f7f\u5728lb02\u4e0a\u6dfb\u52a0VIP\uff0c\u4e5f\u4f1a\u53d1\u751f\u5ba2\u6237\u7aef\u65e0\u6cd5\u8bbf\u95ee\u7684\u60c5\u51b5\u3002
\n\u89e3\u51b3\u529e\u6cd5\u662f\uff1a\u5f53lb01\u5b95\u673a\uff0cVIP\u5730\u5740\u8fc1\u79fb\u5230lb02\u65f6\uff0c\u9700\u8981\u901a\u8fc7arping\u547d\u4ee4\u901a\u77e5\u6240\u6709\u7f51\u7edc\u5185\u673a\u5668\u66f4\u65b0\u672c\u5730\u7684ARP\u7f13\u5b58\u8868\uff0c\u4ece\u800c\u4f7f\u5f97\u5ba2\u6237\u673a\u8bbf\u95ee\u65f6\u91cd\u65b0\u5e7f\u64ad\u83b7\u53d6MAC\u5730\u5740\u3002
\n\u8fd9\u4e2a\u662f\u81ea\u5df1\u5f00\u53d1\u670d\u52a1\u5668\u9ad8\u53ef\u7528\u811a\u672c\u53ca\u6240\u6709\u9ad8\u53ef\u7528\u8f6f\u4ef6\u5fc5\u987b\u8003\u8651\u5230\u7684\u95ee\u9898\u3002\n<\/div>\n
ARP<\/em>\u5e7f\u64ad\u8fdb\u884c\u65b0\u7684\u5730\u5740\u89e3\u6790<\/em><\/p>\n
\n
arping -I eth0 -c 1 -U VIP\narping -I eth0 -c 1 -U 10.0.0.13<\/pre>\n<\/div>\n
\u6d4b\u8bd5\u547d\u4ee4<\/em><\/p>\n
\n
ip addr del 10.0.0.13\/24 dev eth0\nip addr add 10.0.0.13\/24 dev eth0\nip addr show eth0\narping -I eth0 -c 1 -U 10.0.0.13<\/pre>\n<\/div>\n
windows\u67e5\u770barp -a<\/p>\n
\n
\u63a5\u53e3: 10.0.0.1 --- 0x12\n  Internet \u5730\u5740         \u7269\u7406\u5730\u5740              \u7c7b\u578b\n  10.0.0.13             00-0c-29-de-7c-97     \u52a8\u6001\n  10.0.0.15             00-0c-29-de-7c-97     \u52a8\u6001\n  10.0.0.16             00-0c-29-2e-47-20     \u52a8\u6001\n  10.0.0.17             00-0c-29-4a-ac-4a     \u52a8\u6001\n  10.0.0.18             00-0c-29-ea-ca-55     \u52a8\u6001<\/pre>\n<\/div>\n
\u2462arp_announce<\/strong>\u548carp_ignore<\/strong>\u8be6\u89e3<\/strong><\/p>\n
\n
#  \u914d\u7f6e\u7684\u5185\u6838\u53c2\u6570\nnet.ipv4.conf.all.arp_ignore = 1\nnet.ipv4.conf.all.arp_announce = 2\nnet.ipv4.conf.lo.arp_ignore = 1\nnet.ipv4.conf.lo.arp_announce = 2<\/pre>\n<\/div>\n
lvs\u5728DR\u6a21\u5f0f\u4e0b\u9700\u8981\u5173\u95edarp\u529f\u80fd
\narp_announce<\/em><\/strong>
\n\u5bf9\u7f51\u7edc\u63a5\u53e3\u4e0a\uff0c\u672c\u5730IP\u5730\u5740\u7684\u53d1\u51fa\u7684\uff0cARP\u56de\u5e94\uff0c\u4f5c\u51fa\u76f8\u5e94\u7ea7\u522b\u7684\u9650\u5236:
\n\u786e\u5b9a\u4e0d\u540c\u7a0b\u5ea6\u7684\u9650\u5236,\u5ba3\u5e03\u5bf9\u6765\u81ea\u672c\u5730\u6e90IP\u5730\u5740\u53d1\u51faArp\u8bf7\u6c42\u7684\u63a5\u53e3<\/p>\n\n\n\n\n\n\n
\n
\u6570\u503c<\/strong><\/p>\n<\/td>\n
\n
\u542b\u4e49<\/strong><\/p>\n<\/td>\n<\/tr>\n
\n
0(<\/strong>\u9ed8\u8ba4<\/strong>)<\/strong><\/p>\n<\/td>\n
\u5728\u4efb\u610f\u7f51\u7edc\u63a5\u53e3\uff08eth0,eth1\uff0clo\uff09\u4e0a\u7684\u4efb\u4f55\u672c\u5730\u5730\u5740<\/td>\n<\/tr>\n
\n
1<\/strong><\/p>\n<\/td>\n
\u5c3d\u91cf\u907f\u514d\u4e0d\u5728\u8be5\u7f51\u7edc\u63a5\u53e3\u5b50\u7f51\u6bb5\u7684\u672c\u5730\u5730\u5740\u505a\u51faarp\u56de\u5e94.\u00a0\u5f53\u53d1\u8d77ARP\u8bf7\u6c42\u7684\u6e90IP\u5730\u5740\u00a0\u662f\u88ab\u8bbe\u7f6e\u5e94\u8be5\u7ecf\u7531\u8def\u7531\u8fbe\u5230\u6b64\u7f51\u7edc\u63a5\u53e3\u7684\u65f6\u5019\u5f88\u6709\u7528.\u6b64\u65f6\u4f1a\u68c0\u67e5\u6765\u8bbfIP\u662f\u5426\u4e3a\u6240\u6709\u63a5\u53e3\u00a0\u4e0a\u7684\u5b50\u7f51\u6bb5\u5185ip\u4e4b\u4e00.\u5982\u679c\u6539\u6765\u8bbfIP\u4e0d\u5c5e\u4e8e\u5404\u4e2a\u7f51\u7edc\u63a5\u53e3\u4e0a\u7684\u5b50\u7f51\u6bb5\u5185,\u90a3\u4e48\u5c06\u91c7\u7528\u7ea7\u522b2\u7684\u65b9\u5f0f\u6765\u8fdb\u884c\u5904\u7406.<\/td>\n<\/tr>\n
\n
2<\/strong><\/p>\n<\/td>\n
\u5bf9\u67e5\u8be2\u76ee\u6807\u4f7f\u7528\u6700\u9002\u5f53\u7684\u672c\u5730\u5730\u5740.\u5728\u6b64\u6a21\u5f0f\u4e0b\u5c06\u5ffd\u7565\u8fd9\u4e2aIP\u6570\u636e\u5305\u7684\u6e90\u5730\u5740\u5e76\u5c1d\u8bd5\u00a0\u9009\u62e9\u4e0e\u80fd\u4e0e\u8be5\u5730\u5740\u901a\u4fe1\u7684\u672c\u5730\u5730\u5740.\u9996\u8981\u662f\u9009\u62e9\u6240\u6709\u7684\u7f51\u7edc\u63a5\u53e3\u7684\u5b50\u7f51\u4e2d\u5916\u51fa\u8bbf\u95ee\u5b50\u7f51\u4e2d\u00a0\u5305\u542b\u8be5\u76ee\u6807IP\u5730\u5740\u7684\u672c\u5730\u5730\u5740.\u00a0\u5982\u679c\u6ca1\u6709\u5408\u9002\u7684\u5730\u5740\u88ab\u53d1\u73b0,\u5c06\u9009\u62e9\u5f53\u524d\u7684\u53d1\u9001\u7f51\u7edc\u63a5\u53e3\u00a0\u6216\u5176\u4ed6\u7684\u6709\u53ef\u80fd\u63a5\u53d7\u5230\u8be5ARP\u56de\u5e94\u7684\u7f51\u7edc\u63a5\u53e3\u6765\u8fdb\u884c\u53d1\u9001.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
arp_ignore<\/em><\/strong>\u5b9a\u4e49<\/strong>
\n\u5bf9\u76ee\u6807\u5730\u5b9a\u4e49\u5bf9\u76ee\u6807\u5730\u5740\u4e3a\u672c\u5730IP<\/strong>\u7684ARP<\/strong>\u8be2\u95ee\u4e0d\u540c\u7684\u5e94\u7b54\u6a21\u5f0f0<\/strong><\/p>\n\n\n\n\n\n\n\n\n\n
\n
\u6570\u503c<\/strong><\/p>\n<\/td>\n
\n
\u542b\u4e49<\/strong><\/p>\n<\/td>\n<\/tr>\n
0(<\/strong>\u9ed8\u8ba4\u503c<\/strong>)<\/strong><\/td>\n\u56de\u5e94\u4efb\u4f55\u7f51\u7edc\u63a5\u53e3\u4e0a\u5bf9\u4efb\u4f55\u672c\u5730IP\u5730\u5740\u7684arp\u67e5\u8be2\u8bf7\u6c42<\/td>\n<\/tr>\n
1<\/strong><\/td>\n\u53ea\u56de\u7b54\u76ee\u6807IP\u5730\u5740\u662f\u6765\u8bbf\u7f51\u7edc\u63a5\u53e3\u672c\u5730\u5730\u5740\u7684ARP\u67e5\u8be2\u8bf7\u6c42<\/td>\n<\/tr>\n
2<\/strong><\/td>\n\u53ea\u56de\u7b54\u76ee\u6807IP\u5730\u5740\u662f\u6765\u8bbf\u7f51\u7edc\u63a5\u53e3\u672c\u5730\u5730\u5740\u7684ARP\u67e5\u8be2\u8bf7\u6c42,\u4e14\u6765\u8bbfIP\u5fc5\u987b\u5728\u8be5\u7f51\u7edc\u63a5\u53e3\u7684\u5b50\u7f51\u6bb5\u5185<\/td>\n<\/tr>\n
3<\/strong><\/td>\n\u4e0d\u56de\u5e94\u8be5\u7f51\u7edc\u754c\u9762\u7684arp\u8bf7\u6c42\uff0c\u800c\u53ea\u5bf9\u8bbe\u7f6e\u7684\u552f\u4e00\u548c\u8fde\u63a5\u5730\u5740\u505a\u51fa\u56de\u5e94<\/td>\n<\/tr>\n
4-7<\/strong><\/td>\n\u4fdd\u7559\u672a\u4f7f\u7528<\/td>\n<\/tr>\n
8<\/strong><\/td>\n\u4e0d\u56de\u5e94\u6240\u6709\uff08\u672c\u5730\u5730\u5740\uff09\u7684arp\u67e5\u8be2<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\u6291\u5236RS<\/strong>\u7aefarp<\/strong>\u524d\u7684\u5e7f\u64ad\u60c5\u51b5<\/strong><\/p>\n
\\\"\u9ad8\u5e76\u53d1\u573a\u666f<\/p>\n
\u6291\u5236RS<\/strong>\u7aefarp<\/strong>\u540e\u5e7f\u64ad\u60c5\u51b5<\/strong><\/p>\n
\u00a0\\\"\u9ad8\u5e76\u53d1\u573a\u666f<\/p>\n
1.6 LVS\u96c6\u7fa4\u7684\u5de5\u4f5c\u6a21\u5f0f<\/span><\/h2>\n
\n
DR\uff08Direct Routing\uff09\u76f4\u63a5\u8def\u7531\u6a21\u5f0f\nNAT\uff08Network Address Translation\uff09\nTUN\uff08Tunneling\uff09\u96a7\u9053\u6a21\u5f0f\nFULLNAT\uff08Full Network Address Translation\uff09<\/pre>\n<\/div>\n
1.6.1 LVS\u96c6\u7fa4\u7684\u5de5\u4f5c\u6a21\u5f0f–NAT<\/span><\/h3>\n
\\\"\u9ad8\u5e76\u53d1\u573a\u666f\u00a0<\/span><\/h3>\n
\u901a\u8fc7\u7f51\u7edc\u5730\u5740\u8f6c\u6362\uff0c\u8c03\u5ea6\u5668LB\u91cd\u5199\u8bf7\u6c42\u62a5\u6587\u7684\u76ee\u6807\u5730\u5740\uff0c\u6839\u636e\u9884\u8bbe\u7684\u8c03\u5ea6\u7b97\u6cd5\uff0c\u5c06\u8bf7\u6c42\u5206\u6d3e\u7ed9\u540e\u7aef\u7684\u771f\u5b9e\u670d\u52a1\u5668\uff0c\u771f\u5b9e\u670d\u52a1\u5668\u7684\u54cd\u5e94\u62a5\u6587\u5904\u7406\u4e4b\u540e\uff0c\u8fd4\u56de\u65f6\u5fc5\u987b\u8981\u901a\u8fc7\u8c03\u5ea6\u5668\uff0c\u7ecf\u8fc7\u8c03\u5ea6\u5668\u65f6\u62a5\u6587\u7684\u6e90\u5730\u5740\u88ab\u91cd\u5199\uff0c\u518d\u8fd4\u56de\u7ed9\u5ba2\u6237\uff0c\u5b8c\u6210\u6574\u4e2a\u8d1f\u8f7d\u8c03\u5ea6\u8fc7\u7a0b\u3002
\n\u6536\u8d39\u7ad9\u6a21\u5f0f—\u6765\u53bb\u90fd\u8981\u7ecf\u8fc7LB\u8d1f\u8f7d\u5747\u8861\u5668\u3002
\nNAT<\/strong>\u65b9\u5f0f\u7684\u5b9e\u73b0\u539f\u7406\u548c\u6570\u636e\u5305\u7684\u6539\u53d8<\/strong><\/p>\n
\u00a0\\\"\u9ad8\u5e76\u53d1\u573a\u666f<\/p>\n
\n
(a). \u5f53\u7528\u6237\u8bf7\u6c42\u5230\u8fbeDirector Server\uff0c\u6b64\u65f6\u8bf7\u6c42\u7684\u6570\u636e\u62a5\u6587\u4f1a\u5148\u5230\u5185\u6838\u7a7a\u95f4\u7684PREROUTING\u94fe\u3002 \u6b64\u65f6\u62a5\u6587\u7684\u6e90IP\u4e3aCIP\uff0c\u76ee\u6807IP\u4e3aVIP\n(b). PREROUTING\u68c0\u67e5\u53d1\u73b0\u6570\u636e\u5305\u7684\u76ee\u6807IP\u662f\u672c\u673a\uff0c\u5c06\u6570\u636e\u5305\u9001\u81f3INPUT\u94fe\n(c). IPVS\u6bd4\u5bf9\u6570\u636e\u5305\u8bf7\u6c42\u7684\u670d\u52a1\u662f\u5426\u4e3a\u96c6\u7fa4\u670d\u52a1\uff0c\u82e5\u662f\uff0c\u4fee\u6539\u6570\u636e\u5305\u7684\u76ee\u6807IP\u5730\u5740\u4e3a\u540e\u7aef\u670d\u52a1\u5668IP\uff0c\u7136\u540e\u5c06\u6570\u636e\u5305\u53d1\u81f3POSTROUTING\u94fe\u3002 \u6b64\u65f6\u62a5\u6587\u7684\u6e90IP\u4e3aCIP\uff0c\u76ee\u6807IP\u4e3aRIP\n(d). POSTROUTING\u94fe\u901a\u8fc7\u9009\u8def\uff0c\u5c06\u6570\u636e\u5305\u53d1\u9001\u7ed9Real Server\n(e). Real Server\u6bd4\u5bf9\u53d1\u73b0\u76ee\u6807\u4e3a\u81ea\u5df1\u7684IP\uff0c\u5f00\u59cb\u6784\u5efa\u54cd\u5e94\u62a5\u6587\u53d1\u56de\u7ed9Director Server\u3002 \u6b64\u65f6\u62a5\u6587\u7684\u6e90IP\u4e3aRIP\uff0c\u76ee\u6807IP\u4e3aCIP\n(f). Director Server\u5728\u54cd\u5e94\u5ba2\u6237\u7aef\u524d\uff0c\u6b64\u65f6\u4f1a\u5c06\u6e90IP\u5730\u5740\u4fee\u6539\u4e3a\u81ea\u5df1\u7684VIP\u5730\u5740\uff0c\u7136\u540e\u54cd\u5e94\u7ed9\u5ba2\u6237\u7aef\u3002 \u6b64\u65f6\u62a5\u6587\u7684\u6e90IP\u4e3aVIP\uff0c\u76ee\u6807IP\u4e3aCIP<\/pre>\n<\/div>\n
LVS-NAT<\/strong>\u6a21\u578b\u7684\u7279\u6027<\/strong>
\nl\u00a0RS\u5e94\u8be5\u4f7f\u7528\u79c1\u6709\u5730\u5740\uff0cRS\u7684\u7f51\u5173\u5fc5\u987b\u6307\u5411DIP
\nl\u00a0DIP\u548cRIP\u5fc5\u987b\u5728\u540c\u4e00\u4e2a\u7f51\u6bb5\u5185
\nl\u00a0\u8bf7\u6c42\u548c\u54cd\u5e94\u62a5\u6587\u90fd\u9700\u8981\u7ecf\u8fc7Director Server\uff0c\u9ad8\u8d1f\u8f7d\u573a\u666f\u4e2d\uff0cDirector Server\u6613\u6210\u4e3a\u6027\u80fd\u74f6\u9888
\nl\u00a0\u652f\u6301\u7aef\u53e3\u6620\u5c04
\nl\u00a0RS\u53ef\u4ee5\u4f7f\u7528\u4efb\u610f\u64cd\u4f5c\u7cfb\u7edf
\nl\u00a0\u7f3a\u9677\uff1a\u5bf9Director Server\u538b\u529b\u4f1a\u6bd4\u8f83\u5927\uff0c\u8bf7\u6c42\u548c\u54cd\u5e94\u90fd\u9700\u7ecf\u8fc7director server<\/p>\n
1.6.2 LVS\u96c6\u7fa4\u7684\u5de5\u4f5c\u6a21\u5f0f–\u96a7\u9053\u6a21\u5f0fTUN<\/span><\/h3>\n
\\\"\u9ad8\u5e76\u53d1\u573a\u666f<\/p>\n
\u91c7\u7528NAT\u6280\u672f\u65f6\uff0c\u7531\u4e8e\u8bf7\u6c42\u548c\u54cd\u5e94\u7684\u62a5\u6587\u90fd\u5fc5\u987b\u7ecf\u8fc7\u8c03\u5ea6\u5668\u5730\u5740\u91cd\u5199\uff0c\u5f53\u5ba2\u6237\u8bf7\u6c42\u8d8a\u6765\u8d8a\u591a\u65f6\uff0c\u8c03\u5ea6\u5668\u7684\u5904\u7406\u80fd\u529b\u5c06\u6210\u4e3a\u74f6\u9888\uff0c\u4e3a\u4e86\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff0c\u8c03\u5ea6\u5668\u628a\u8bf7\u6c42\u7684\u62a5\u6587\u901a\u8fc7IP\u96a7\u9053(\u76f8\u5f53\u4e8eipip\u6216ipsec )\u8f6c\u53d1\u81f3\u771f\u5b9e\u670d\u52a1\u5668\uff0c\u800c\u771f\u5b9e\u670d\u52a1\u5668\u5c06\u54cd\u5e94\u5904\u7406\u540e\u76f4\u63a5\u8fd4\u56de\u7ed9\u5ba2\u6237\u7aef\u7528\u6237\uff0c\u8fd9\u6837\u8c03\u5ea6\u5668\u5c31\u53ea\u5904\u7406\u8bf7\u6c42\u7684\u5165\u7ad9\u62a5\u6587\u3002\u7531\u4e8e\u4e00\u822c\u7f51\u7edc\u670d\u52a1\u5e94\u7b54\u6570\u636e\u6bd4\u8bf7\u6c42\u62a5\u6587\u5927\u5f88\u591a\uff0c\u91c7\u7528\u00a0VS\/TUN\u6280\u672f\u540e\uff0c\u96c6\u7fa4\u7cfb\u7edf\u7684\u6700\u5927\u541e\u5410\u91cf\u53ef\u4ee5\u63d0\u9ad810\u500d\u3002
\nVS\/TUN\u5de5\u4f5c\u6d41\u7a0b,\u5b83\u7684\u8fde\u63a5\u8c03\u5ea6\u548c\u7ba1\u7406\u4e0eVS\/NAT\u4e2d\u7684\u4e00\u6837\uff0c\u53ea\u662f\u5b83\u7684\u62a5\u6587\u8f6c\u53d1\u65b9\u6cd5\u4e0d\u540c\u3002\u8c03\u5ea6\u5668\u6839\u636e\u5404\u4e2a\u670d\u52a1\u5668\u7684\u8d1f\u8f7d\u60c5\u51b5\uff0c\u8fde\u63a5\u6570\u591a\u5c11\uff0c\u52a8\u6001\u5730\u9009\u62e9\u4e00\u53f0\u670d\u52a1\u5668\uff0c\u5c06\u539f\u8bf7\u6c42\u7684\u62a5\u6587\u5c01\u88c5\u5728\u53e6\u4e00\u4e2aIP\u62a5\u6587\u4e2d\uff0c\u518d\u5c06\u5c01\u88c5\u540e\u7684IP\u62a5\u6587\u8f6c\u53d1\u7ed9\u9009\u51fa\u7684\u771f\u5b9e\u670d\u52a1\u5668\uff1b\u771f\u5b9e\u670d\u52a1\u5668\u6536\u5230\u62a5\u6587\u540e\uff0c\u5148\u5c06\u6536\u5230\u7684\u62a5\u6587\u89e3\u5c01\u83b7\u5f97\u539f\u6765\u76ee\u6807\u5730\u5740\u4e3aVIP\u5730\u5740\u7684\u62a5\u6587,\u00a0\u670d\u52a1\u5668\u53d1\u73b0VIP\u5730\u5740\u88ab\u914d\u7f6e\u5728\u672c\u5730\u7684IP\u96a7\u9053\u8bbe\u5907\u4e0a(\u6b64\u5904\u8981\u4eba\u4e3a\u914d\u7f6e)\uff0c\u6240\u4ee5\u5c31\u5904\u7406\u8fd9\u4e2a\u8bf7\u6c42\uff0c\u7136\u540e\u6839\u636e\u8def\u7531\u8868\u5c06\u54cd\u5e94\u62a5\u6587\u76f4\u63a5\u8fd4\u56de\u7ed9\u5ba2\u6237\u3002
\nTUN<\/strong>\u539f\u7406\u548c\u6570\u636e\u5305\u7684\u6539\u53d8<\/strong><\/p>\n
\\\"\u9ad8\u5e76\u53d1\u573a\u666f<\/p>\n
\n
(a) \u5f53\u7528\u6237\u8bf7\u6c42\u5230\u8fbeDirector Server\uff0c\u6b64\u65f6\u8bf7\u6c42\u7684\u6570\u636e\u62a5\u6587\u4f1a\u5148\u5230\u5185\u6838\u7a7a\u95f4\u7684PREROUTING\u94fe\u3002 \u6b64\u65f6\u62a5\u6587\u7684\u6e90IP\u4e3aCIP\uff0c\u76ee\u6807IP\u4e3aVIP \u3002\n(b) PREROUTING\u68c0\u67e5\u53d1\u73b0\u6570\u636e\u5305\u7684\u76ee\u6807IP\u662f\u672c\u673a\uff0c\u5c06\u6570\u636e\u5305\u9001\u81f3INPUT\u94fe\n(c) IPVS\u6bd4\u5bf9\u6570\u636e\u5305\u8bf7\u6c42\u7684\u670d\u52a1\u662f\u5426\u4e3a\u96c6\u7fa4\u670d\u52a1\uff0c\u82e5\u662f\uff0c\u5728\u8bf7\u6c42\u62a5\u6587\u7684\u9996\u90e8\u518d\u6b21\u5c01\u88c5\u4e00\u5c42IP\u62a5\u6587\uff0c\u5c01\u88c5\u6e90IP\u4e3a\u4e3aDIP\uff0c\u76ee\u6807IP\u4e3aRIP\u3002\u7136\u540e\u53d1\u81f3POSTROUTING\u94fe\u3002 \u6b64\u65f6\u6e90IP\u4e3aDIP\uff0c\u76ee\u6807IP\u4e3aRIP\n(d) POSTROUTING\u94fe\u6839\u636e\u6700\u65b0\u5c01\u88c5\u7684IP\u62a5\u6587\uff0c\u5c06\u6570\u636e\u5305\u53d1\u81f3RS\uff08\u56e0\u4e3a\u5728\u5916\u5c42\u5c01\u88c5\u591a\u4e86\u4e00\u5c42IP\u9996\u90e8\uff0c\u6240\u4ee5\u53ef\u4ee5\u7406\u89e3\u4e3a\u6b64\u65f6\u901a\u8fc7\u96a7\u9053\u4f20\u8f93\uff09\u3002 \u6b64\u65f6\u6e90IP\u4e3aDIP\uff0c\u76ee\u6807IP\u4e3aRIP\n(e) RS\u63a5\u6536\u5230\u62a5\u6587\u540e\u53d1\u73b0\u662f\u81ea\u5df1\u7684IP\u5730\u5740\uff0c\u5c31\u5c06\u62a5\u6587\u63a5\u6536\u4e0b\u6765\uff0c\u62c6\u9664\u6389\u6700\u5916\u5c42\u7684IP\u540e\uff0c\u4f1a\u53d1\u73b0\u91cc\u9762\u8fd8\u6709\u4e00\u5c42IP\u9996\u90e8\uff0c\u800c\u4e14\u76ee\u6807\u662f\u81ea\u5df1\u7684lo\u63a5\u53e3VIP\uff0c\u90a3\u4e48\u6b64\u65f6RS\u5f00\u59cb\u5904\u7406\u6b64\u8bf7\u6c42\uff0c\u5904\u7406\u5b8c\u6210\u4e4b\u540e\uff0c\u901a\u8fc7lo\u63a5\u53e3\u9001\u7ed9eth0\u7f51\u5361\uff0c\u7136\u540e\u5411\u5916\u4f20\u9012\u3002 \u6b64\u65f6\u7684\u6e90IP\u5730\u5740\u4e3aVIP\uff0c\u76ee\u6807IP\u4e3aCIP\n(f) \u54cd\u5e94\u62a5\u6587\u6700\u7ec8\u9001\u8fbe\u81f3\u5ba2\u6237\u7aef<\/pre>\n<\/div>\n
LVS-Tun\u6a21\u578b\u7279\u6027
\nl\u00a0RIP\u3001VIP\u3001DIP\u5168\u662f\u516c\u7f51\u5730\u5740
\nl\u00a0RS\u7684\u7f51\u5173\u4e0d\u4f1a\u4e5f\u4e0d\u53ef\u80fd\u6307\u5411DIP
\nl\u00a0\u6240\u6709\u7684\u8bf7\u6c42\u62a5\u6587\u7ecf\u7531Director Server\uff0c\u4f46\u54cd\u5e94\u62a5\u6587\u5fc5\u987b\u4e0d\u80fd\u8fdb\u8fc7Director Server
\nl\u00a0\u4e0d\u652f\u6301\u7aef\u53e3\u6620\u5c04
\nl\u00a0RS\u7684\u7cfb\u7edf\u5fc5\u987b\u652f\u6301\u96a7\u9053<\/p>\n
1.6.3 LVS\u96c6\u7fa4\u7684\u5de5\u4f5c\u6a21\u5f0f–FULLNAT<\/span><\/h3>\n
\\\"\u9ad8\u5e76\u53d1\u573a\u666f<\/p>\n
LVS\u7684DR\u548cNAT\u6a21\u5f0f\u8981\u6c42RS\u548cLVS\u5728\u540c\u4e00\u4e2avlan\u4e2d\uff0c\u5bfc\u81f4\u90e8\u7f72\u6210\u672c\u8fc7\u9ad8\uff1bTUNNEL\u6a21\u5f0f\u867d\u7136\u53ef\u4ee5\u8de8vlan\uff0c\u4f46RealServer\u4e0a\u9700\u8981\u90e8\u7f72ipip\u96a7\u9053\u6a21\u5757\u7b49\uff0c\u7f51\u7edc\u62d3\u6251\u4e0a\u9700\u8981\u8fde\u901a\u5916\u7f51\uff0c\u8f83\u590d\u6742\uff0c\u4e0d\u6613\u8fd0\u7ef4\u3002
\n\u4e3a\u4e86\u89e3\u51b3\u4e0a\u8ff0\u95ee\u9898\uff0c\u5f00\u53d1\u51faFULLNAT\uff0c\u8be5\u6a21\u5f0f\u548cNAT\u6a21\u5f0f\u7684\u533a\u522b\u662f\uff1a\u6570\u636e\u5305\u8fdb\u5165\u65f6\uff0c\u9664\u4e86\u505aDNAT\uff0c\u8fd8\u505aSNAT\uff08\u7528\u6237ip->\u5185\u7f51ip\uff09\uff0c\u4ece\u800c\u5b9e\u73b0LVS-RealServer\u95f4\u53ef\u4ee5\u8de8vlan\u901a\u8baf\uff0cRealServer\u53ea\u9700\u8981\u8fde\u63a5\u5230\u5185\u7f51\u3002
\n\u7c7b\u6bd4\u5730\u94c1\u7ad9\u591a\u4e2a\u95f8\u673a\u3002<\/p>\n
1.7 IPVS\u8c03\u5ea6\u5668\u5b9e\u73b0\u4e86\u5982\u4e0b\u516b\u79cd\u8d1f\u8f7d\u8c03\u5ea6\u7b97\u6cd5\uff1a<\/span><\/h2>\n
\u3000\u3000a)\u00a0<\/strong>\u8f6e\u8be2\uff08Round Robin<\/strong>\uff09RR<\/strong>
\n\u8c03\u5ea6\u5668\u901a\u8fc7\\”\u8f6e\u53eb\\”\u8c03\u5ea6\u7b97\u6cd5\u5c06\u5916\u90e8\u8bf7\u6c42\u6309\u987a\u5e8f\u8f6e\u6d41\u5206\u914d\u5230\u96c6\u7fa4\u4e2d\u7684\u771f\u5b9e\u670d\u52a1\u5668\u4e0a\uff0c\u5b83\u5747\u7b49\u5730\u5bf9\u5f85\u6bcf\u4e00\u53f0\u670d\u52a1\u5668\uff0c\u800c\u4e0d\u7ba1\u670d\u52a1\u5668\u4e0a\u5b9e\u9645\u7684\u8fde\u63a5\u6570\u548c\u7cfb\u7edf\u8d1f\u8f7d\u3002
\n\u3000\u3000b)\u00a0<\/strong>\u52a0\u6743\u8f6e\u53eb\uff08Weighted Round Robin<\/strong>\uff09WRR<\/strong>
\n\u8c03\u5ea6\u5668\u901a\u8fc7\\”\u52a0\u6743\u8f6e\u53eb\\”\u8c03\u5ea6\u7b97\u6cd5\u6839\u636e\u771f\u5b9e\u670d\u52a1\u5668\u7684\u4e0d\u540c\u5904\u7406\u80fd\u529b\u6765\u8c03\u5ea6\u8bbf\u95ee\u8bf7\u6c42\u3002\u8fd9\u6837\u53ef\u4ee5\u4fdd\u8bc1\u5904\u7406\u80fd\u529b\u5f3a\u7684\u670d\u52a1\u5668\u5904\u7406\u66f4\u591a\u7684\u8bbf\u95ee\u6d41\u91cf\u3002\u8c03\u5ea6\u5668\u53ef\u4ee5\u81ea\u52a8\u95ee\u8be2\u771f\u5b9e\u670d\u52a1\u5668\u7684\u8d1f\u8f7d\u60c5\u51b5\uff0c\u5e76\u52a8\u6001\u5730\u8c03\u6574\u5176\u6743\u503c\u3002
\n\u3000\u3000c)\u00a0<\/strong>\u6700\u5c11\u94fe\u63a5\uff08Least Connections<\/strong>\uff09\u00a0LC<\/strong>
\n\u8c03\u5ea6\u5668\u901a\u8fc7\\”\u6700\u5c11\u8fde\u63a5\\”\u8c03\u5ea6\u7b97\u6cd5\u52a8\u6001\u5730\u5c06\u7f51\u7edc\u8bf7\u6c42\u8c03\u5ea6\u5230\u5df2\u5efa\u7acb\u7684\u94fe\u63a5\u6570\u6700\u5c11\u7684\u670d\u52a1\u5668\u4e0a\u3002\u5982\u679c\u96c6\u7fa4\u7cfb\u7edf\u7684\u771f\u5b9e\u670d\u52a1\u5668\u5177\u6709\u76f8\u8fd1\u7684\u7cfb\u7edf\u6027\u80fd\uff0c\u91c7\u7528\\”\u6700\u5c0f\u8fde\u63a5\\”\u8c03\u5ea6\u7b97\u6cd5\u53ef\u4ee5\u8f83\u597d\u5730\u5747\u8861\u8d1f\u8f7d\u3002
\n\u3000\u3000d)\u00a0<\/strong>\u52a0\u6743\u6700\u5c11\u94fe\u63a5\uff08Weighted Least Connections<\/strong>\uff09\u00a0Wlc<\/strong>
\n\u5728\u96c6\u7fa4\u7cfb\u7edf\u4e2d\u7684\u670d\u52a1\u5668\u6027\u80fd\u5dee\u5f02\u8f83\u5927\u7684\u60c5\u51b5\u4e0b\uff0c\u8c03\u5ea6\u5668\u91c7\u7528\\”\u52a0\u6743\u6700\u5c11\u94fe\u63a5\\”\u8c03\u5ea6\u7b97\u6cd5\u4f18\u5316\u8d1f\u8f7d\u5747\u8861\u6027\u80fd\uff0c\u5177\u6709\u8f83\u9ad8\u6743\u503c\u7684\u670d\u52a1\u5668\u5c06\u627f\u53d7\u8f83\u5927\u6bd4\u4f8b\u7684\u6d3b\u52a8\u8fde\u63a5\u8d1f\u8f7d\u3002\u8c03\u5ea6\u5668\u53ef\u4ee5\u81ea\u52a8\u95ee\u8be2\u771f\u5b9e\u670d\u52a1\u5668\u7684\u8d1f\u8f7d\u60c5\u51b5\uff0c\u5e76\u52a8\u6001\u5730\u8c03\u6574\u5176\u6743\u503c\u3002
\n\u3000\u3000e)\u00a0<\/strong>\u57fa\u4e8e\u5c40\u90e8\u6027\u7684\u6700\u5c11\u94fe\u63a5\uff08Locality-Based Least Connections<\/strong>\uff09\u00a0Lblc<\/strong>
\n\\”\u57fa\u4e8e\u5c40\u90e8\u6027\u7684\u6700\u5c11\u94fe\u63a5\\”\u00a0\u8c03\u5ea6\u7b97\u6cd5\u662f\u9488\u5bf9\u76ee\u6807IP\u5730\u5740\u7684\u8d1f\u8f7d\u5747\u8861\uff0c\u76ee\u524d\u4e3b\u8981\u7528\u4e8eCache\u96c6\u7fa4\u7cfb\u7edf\u3002\u8be5\u7b97\u6cd5\u6839\u636e\u8bf7\u6c42\u7684\u76ee\u6807IP\u5730\u5740\u627e\u51fa\u8be5\u76ee\u6807IP\u5730\u5740\u6700\u8fd1\u4f7f\u7528\u7684\u670d\u52a1\u5668\uff0c\u82e5\u8be5\u670d\u52a1\u5668\u00a0\u662f\u53ef\u7528\u7684\u4e14\u6ca1\u6709\u8d85\u8f7d\uff0c\u5c06\u8bf7\u6c42\u53d1\u9001\u5230\u8be5\u670d\u52a1\u5668\uff1b\u82e5\u670d\u52a1\u5668\u4e0d\u5b58\u5728\uff0c\u6216\u8005\u8be5\u670d\u52a1\u5668\u8d85\u8f7d\u4e14\u6709\u670d\u52a1\u5668\u5904\u4e8e\u4e00\u534a\u7684\u5de5\u4f5c\u8d1f\u8f7d\uff0c\u5219\u7528\\”\u6700\u5c11\u94fe\u63a5\\”\u7684\u539f\u5219\u9009\u51fa\u4e00\u4e2a\u53ef\u7528\u7684\u670d\u52a1\u00a0\u5668\uff0c\u5c06\u8bf7\u6c42\u53d1\u9001\u5230\u8be5\u670d\u52a1\u5668\u3002
\n\u3000\u3000f)\u00a0<\/strong>\u5e26\u590d\u5236\u7684\u57fa\u4e8e\u5c40\u90e8\u6027\u6700\u5c11\u94fe\u63a5\uff08Locality-Based Least Connections with Replication<\/strong>\uff09<\/strong>
\n\\”\u5e26\u590d\u5236\u7684\u57fa\u4e8e\u5c40\u90e8\u6027\u6700\u5c11\u94fe\u63a5\\”\u8c03\u5ea6\u7b97\u6cd5\u4e5f\u662f\u9488\u5bf9\u76ee\u6807IP\u5730\u5740\u7684\u8d1f\u8f7d\u5747\u8861\uff0c\u76ee\u524d\u4e3b\u8981\u7528\u4e8eCache\u96c6\u7fa4\u7cfb\u7edf\u3002\u5b83\u4e0eLBLC\u7b97\u6cd5\u7684\u4e0d\u540c\u4e4b\u5904\u662f\u5b83\u8981\u7ef4\u62a4\u4ece\u4e00\u4e2a\u00a0\u76ee\u6807IP\u5730\u5740\u5230\u4e00\u7ec4\u670d\u52a1\u5668\u7684\u6620\u5c04\uff0c\u800cLBLC\u7b97\u6cd5\u7ef4\u62a4\u4ece\u4e00\u4e2a\u76ee\u6807IP\u5730\u5740\u5230\u4e00\u53f0\u670d\u52a1\u5668\u7684\u6620\u5c04\u3002\u8be5\u7b97\u6cd5\u6839\u636e\u8bf7\u6c42\u7684\u76ee\u6807IP\u5730\u5740\u627e\u51fa\u8be5\u76ee\u6807IP\u5730\u5740\u5bf9\u5e94\u7684\u670d\u52a1\u00a0\u5668\u7ec4\uff0c\u6309\\”\u6700\u5c0f\u8fde\u63a5\\”\u539f\u5219\u4ece\u670d\u52a1\u5668\u7ec4\u4e2d\u9009\u51fa\u4e00\u53f0\u670d\u52a1\u5668\uff0c\u82e5\u670d\u52a1\u5668\u6ca1\u6709\u8d85\u8f7d\uff0c\u5c06\u8bf7\u6c42\u53d1\u9001\u5230\u8be5\u670d\u52a1\u5668\uff0c\u82e5\u670d\u52a1\u5668\u8d85\u8f7d\uff1b\u5219\u6309\\”\u6700\u5c0f\u8fde\u63a5\\”\u539f\u5219\u4ece\u8fd9\u4e2a\u96c6\u7fa4\u4e2d\u9009\u51fa\u4e00\u00a0\u53f0\u670d\u52a1\u5668\uff0c\u5c06\u8be5\u670d\u52a1\u5668\u52a0\u5165\u5230\u670d\u52a1\u5668\u7ec4\u4e2d\uff0c\u5c06\u8bf7\u6c42\u53d1\u9001\u5230\u8be5\u670d\u52a1\u5668\u3002\u540c\u65f6\uff0c\u5f53\u8be5\u670d\u52a1\u5668\u7ec4\u6709\u4e00\u6bb5\u65f6\u95f4\u6ca1\u6709\u88ab\u4fee\u6539\uff0c\u5c06\u6700\u5fd9\u7684\u670d\u52a1\u5668\u4ece\u670d\u52a1\u5668\u7ec4\u4e2d\u5220\u9664\uff0c\u4ee5\u964d\u4f4e\u590d\u5236\u7684\u00a0\u7a0b\u5ea6\u3002
\n\u3000\u3000g)\u00a0<\/strong>\u76ee\u6807\u5730\u5740\u6563\u5217\uff08Destination Hashing<\/strong>\uff09\u00a0Dh<\/strong>
\n\\”\u76ee\u6807\u5730\u5740\u6563\u5217\\”\u8c03\u5ea6\u7b97\u6cd5\u6839\u636e\u8bf7\u6c42\u7684\u76ee\u6807IP\u5730\u5740\uff0c\u4f5c\u4e3a\u6563\u5217\u952e\uff08Hash Key\uff09\u4ece\u9759\u6001\u5206\u914d\u7684\u6563\u5217\u8868\u627e\u51fa\u5bf9\u5e94\u7684\u670d\u52a1\u5668\uff0c\u82e5\u8be5\u670d\u52a1\u5668\u662f\u53ef\u7528\u7684\u4e14\u672a\u8d85\u8f7d\uff0c\u5c06\u8bf7\u6c42\u53d1\u9001\u5230\u8be5\u670d\u52a1\u5668\uff0c\u5426\u5219\u8fd4\u56de\u7a7a\u3002
\n\u3000\u3000h)\u00a0<\/strong>\u6e90\u5730\u5740\u6563\u5217\uff08Source Hashing<\/strong>\uff09SH<\/strong>
\n\\”\u6e90\u5730\u5740\u6563\u5217\\”\u8c03\u5ea6\u7b97\u6cd5\u6839\u636e\u8bf7\u6c42\u7684\u6e90IP\u5730\u5740\uff0c\u4f5c\u4e3a\u6563\u5217\u952e\uff08Hash Key\uff09\u4ece\u9759\u6001\u5206\u914d\u7684\u6563\u5217\u8868\u627e\u51fa\u5bf9\u5e94\u7684\u670d\u52a1\u5668\uff0c\u82e5\u8be5\u670d\u52a1\u5668\u662f\u53ef\u7528\u7684\u4e14\u672a\u8d85\u8f7d\uff0c\u5c06\u8bf7\u6c42\u53d1\u9001\u5230\u8be5\u670d\u52a1\u5668\uff0c\u5426\u5219\u8fd4\u56de\u7a7a\u3002<\/p>\n
1.8 LVS+Keepalived\u65b9\u6848\u5b9e\u73b0<\/span><\/h2>\n
1.8.1 keepalived\u529f\u80fd<\/span><\/h3>\n
1.\u00a0\u6dfb\u52a0VIP
\n2.\u00a0\u6dfb\u52a0LVS\u914d\u7f6e
\n3.\u00a0\u9ad8\u53ef\u7528\uff08VIP\u6f02\u79fb\uff09
\n4. web\u670d\u52a1\u5668\u5065\u5eb7\u68c0\u67e5<\/p>\n
1.8.2\u00a0\u5728\u8d1f\u8f7d\u5668\u5b89\u88c5Keepalived\u8f6f\u4ef6<\/span><\/h3>\n
\n
yum -y install keepalived<\/pre>\n<\/div>\n
#\u00a0\u68c0\u67e5\u8f6f\u4ef6\u662f\u5426\u5b89\u88c5<\/p>\n
\n
[root@lb03 ~]# rpm -qa keepalived\nkeepalived-1.3.5-1.el7.x86_64<\/pre>\n<\/div>\n
1.8.3\u00a0\u4fee\u6539\u914d\u7f6e\u6587\u4ef6<\/span><\/h3>\n
lb03<\/em>\u4e0akeepalied<\/em>\u914d\u7f6e\u6587\u4ef6<\/em><\/p>\n
\\\"\u9ad8\u5e76\u53d1\u573a\u666f<\/p>\n
\n
 1 [root@lb03 ~]# cat \/etc\/keepalived\/keepalived.conf\n 2 global_defs {\n 3    router_id LVS_01\n 4 }\n 5\n 6 vrrp_instance VI_1 {\n 7     state MASTER\n 8     interface eth0\n 9     virtual_router_id 51\n10     priority 150\n11     advert_int 1\n12     authentication {\n13         auth_type PASS\n14         auth_pass 1111\n15     }\n16     virtual_ipaddress {\n17      10.0.0.13\/24\n18     }\n19 }\n20\n21 virtual_server 10.0.0.13 80 {\n22     delay_loop 6\n23     lb_algo wrr\n24     lb_kind DR\n25     nat_mask 255.255.255.0\n26     persistence_timeout 50\n27     protocol TCP\n28\n29     real_server 10.0.0.17 80 {\n30         weight 1\n31         TCP_CHECK {\n32         connect_timeout 8\n33         nb_get_retry 3\n34         delay_before_retry 3\n35         connect_port 80\n36         }\n37     }\n38\n39     real_server 10.0.0.18 80 {\n40         weight 1\n41         TCP_CHECK {\n42         connect_timeout 8\n43         nb_get_retry 3\n44         delay_before_retry 3\n45         connect_port 80\n46         }\n47     }\n48 }<\/pre>\n<\/div>\n
lb03 \/etc\/keepalived\/keepalived.conf<\/span>\n<\/div>\n
lb04<\/em>\u7684Keepalied<\/em>\u914d\u7f6e\u6587\u4ef6<\/em><\/p>\n
\\\"\u9ad8\u5e76\u53d1\u573a\u666f<\/p>\n
\n
 1 [root@lb04 ~]# cat \/etc\/keepalived\/keepalived.conf\n 2 global_defs {\n 3    router_id LVS_02\n 4 }\n 5\n 6 vrrp_instance VI_1 {\n 7     state BACKUP\n 8     interface eth0\n 9     virtual_router_id 51\n10     priority 100\n11     advert_int 1\n12     authentication {\n13         auth_type PASS\n14         auth_pass 1111\n15     }\n16     virtual_ipaddress {\n17      10.0.0.13\/24\n18     }\n19 }\n20 virtual_server 10.0.0.13 80 {\n21     delay_loop 6\n22     lb_algo wrr\n23     lb_kind DR\n24     nat_mask 255.255.255.0\n25     persistence_timeout 50\n26     protocol TCP\n27\n28     real_server 10.0.0.17 80 {\n29         weight 1\n30         TCP_CHECK {\n31         connect_timeout 8\n32         nb_get_retry 3\n33         delay_before_retry 3\n34         connect_port 80\n35         }\n36     }\n37\n38     real_server 10.0.0.18 80 {\n39         weight 1\n40         TCP_CHECK {\n41         connect_timeout 8\n42         nb_get_retry 3\n43         delay_before_retry 3\n44         connect_port 80\n45         }\n46     }\n47 }<\/pre>\n<\/div>\n
lb04 \/etc\/keepalived\/keepalived.conf<\/span>\n<\/div>\n
keepalived<\/em><\/strong>\u00a0persistence_timeout<\/strong>\u53c2\u6570\u610f\u4e49<\/strong>\u00a0LVS Persistence\u00a0\u53c2\u6570\u7684\u4f5c\u7528
\nhttp:\/\/blog.csdn.net\/nimasike\/article\/details\/53911363<\/em><\/p>\n
1.8.4\u00a0\u542f\u52a8keepalived\u670d\u52a1<\/span><\/h3>\n
\n
[root@lb03 ~]# systemctl restart  keepalived.service\n# \u68c0\u67e5lvs\u72b6\u6001\n[root@lb03 ~]# ipvsadm -ln\nIP Virtual Server version 1.2.1 (size=4096)\nProt LocalAddress:Port Scheduler Flags\n  -> RemoteAddress:Port           Forward Weight ActiveConn InActConn\nTCP  10.0.0.13:80 wrr persistent 50\n  -> 10.0.0.17:80                 Route   1      0          0\n  -> 10.0.0.18:80                 Route   1      0          0\n# \u68c0\u67e5\u865a\u62dfip\n[root@lb03 ~]# ip a s eth0\n2: eth0: <broadcast,multicast,up,lower_up> mtu 1500 qdisc pfifo_fast state UP qlen 1000\n    link\/ether 00:0c:29:de:7c:97 brd ff:ff:ff:ff:ff:ff\n    inet 10.0.0.15\/24 brd 10.0.0.255 scope global eth0\n       valid_lft forever preferred_lft forever\n    inet 10.0.0.13\/24 scope global secondary eth0\n       valid_lft forever preferred_lft forever\n    inet6 fe80::20c:29ff:fede:7c97\/64 scope link\n       valid_lft forever preferred_lft forever<\/broadcast,multicast,up,lower_up><\/pre>\n<\/div>\n
1.8.5\u00a0\u5728web\u670d\u52a1\u5668\u4e0a\u8fdb\u884c\u914d\u7f6e<\/span><\/h3>\n
\n
\uff08\u5728web03\/web04\u540c\u65f6\u64cd\u4f5c\u4e0b\u9762\u6b65\u9aa4\uff09\n\u6b65\u9aa41\uff1a\u5728lo\u7f51\u5361\u7ed1\u5b9aVIP\u5730\u5740\uff08ip\uff09\n\u6b65\u9aa42\uff1a\u4fee\u6539\u5185\u6838\u53c2\u6570\u6291\u5236ARP\u54cd\u5e94\nip addr add 10.0.0.13\/32 dev lo\ncat >>\/etc\/sysctl.conf<<EOF\nnet.ipv4.conf.all.arp_ignore = 1\nnet.ipv4.conf.all.arp_announce = 2\nnet.ipv4.conf.lo.arp_ignore = 1\nnet.ipv4.conf.lo.arp_announce = 2\nEOF\nsysctl -p<\/pre>\n<\/div>\n
\u6ce8\u610f\uff1aweb<\/em><\/strong>\u670d\u52a1\u5668\u4e0a\u7684\u914d\u7f6e\u4e3a\u4e34\u65f6\u751f\u6548\uff0c\u53ef\u4ee5\u5c06\u5176\u5199\u5165rc.local<\/em><\/strong>\u6587\u4ef6\uff0c\u6ce8\u610f\u6587\u4ef6\u7684\u6267\u884c\u6743\u9650\u3002<\/em><\/strong>
\n\u4f7f\u7528curl\u547d\u4ee4\u8fdb\u884c\u6d4b\u8bd5<\/p>\n
\n
[root@lb04 ~]# curl 10.0.0.13\nweb03<\/pre>\n<\/div>\n
\u81f3\u6b64keepalived+lvs<\/em><\/strong>\u914d\u7f6e\u5b8c\u6bd5<\/em><\/strong><\/p>\n
1.9\u00a0\u5e38\u89c1LVS\u8d1f\u8f7d\u5747\u8861\u9ad8\u53ef\u7528\u89e3\u51b3\u65b9\u6848<\/span><\/h2>\n
\u00d8\u00a0\u5f00\u53d1\u7c7b\u4f3ckeepalived\u7684\u811a\u672c\uff0c\u65e9\u671f\u7684\u529e\u6cd5\uff0c\u73b0\u5728\u4e0d\u63a8\u8350\u4f7f\u7528\u3002
\n\u00d8\u00a0heartbeat+lvs+ldirectord\u811a\u672c\u914d\u7f6e\u65b9\u6848\uff0c\u590d\u6742\u4e0d\u6613\u63a7\u5236\uff0c\u4e0d\u63a8\u8350\u4f7f\u7528
\n\u00d8\u00a0RedHat\u5de5\u5177piranha\uff0c\u4e00\u4e2aweb\u754c\u9762\u914d\u7f6eLVS\u3002
\n\u00d8\u00a0LVS-DR+keepalived\u65b9\u6848\uff0c\u8001\u5e08\u63a8\u8350\u6700\u4f18\u65b9\u6848\uff0c\u7b80\u5355\u3001\u6613\u7528\u3001\u9ad8\u6548\u3002\n<\/p><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"
1.1 \u8d1f\u8f7d\u5747\u8861\u4ecb\u7ecd 1.1.1\u00a0\u8d1f\u8f7d\u5747\u8861\u7684\u5999\u7528 \u8d1f\u8f7d\u5747\u8861\uff08Load Balance\uff09\u96c6\u7fa4\u63d0\u4f9b\u4e86\u4e00\u79cd\u5ec9\u4ef7\u3001\u6709\u6548 …<\/p>\n
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