{"id":2489,"date":"2021-10-14T00:21:25","date_gmt":"2021-10-14T07:21:25","guid":{"rendered":"https:\/\/www.xh86.me\/?p=2489"},"modified":"2021-10-14T00:21:25","modified_gmt":"2021-10-14T07:21:25","slug":"centos7-%e5%ae%89%e8%a3%85-lvskeepalivednginx-%e9%ab%98%e5%8f%af%e7%94%a8","status":"publish","type":"post","link":"https:\/\/www.xh86.me\/?p=2489","title":{"rendered":"Centos7 \u5b89\u88c5 LVS+Keepalived+Nginx \u9ad8\u53ef\u7528"},"content":{"rendered":"<p>\u4f7f\u7528Keepalived\u53ef\u4ee5\u5f25\u8865LVS\u7684\u7f3a\u9677\uff0c\u8fd8\u53ef\u4ee5\u5b9e\u73b0LVS Director\u7684\u5197\u4f59\u5907\u4efd\uff0ckeepalived\u4f1a\u6839\u636e\u4e3b\u673a\u7684\u5065\u5eb7\u72b6\u51b5\u8ba9VIP\u5728LVS Director\u4e4b\u95f4\u6f02\u79fb\u3002\u540c\u65f6Keepalived\u8fd8\u53ef\u4ee5\u66ff\u4ee3ipvsadm\u5de5\u5177\uff0c\u5728keepalived\u914d\u7f6e\u6587\u4ef6\u4e2d\u76f4\u63a5\u5b8c\u6210LVS\u7684\u914d\u7f6e\u3002<\/p>\n<p>1. \u914d\u7f6e\u7f51\u7edc\u7ed3\u6784\uff1a<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"837\" height=\"514\" class=\"wp-image-2490\" src=\"https:\/\/www.xh86.me\/wp-content\/uploads\/2021\/10\/diagram-description-automatically-generated-2.jpeg\" alt=\"Diagram\n\nDescription automatically generated\" srcset=\"https:\/\/www.xh86.me\/wp-content\/uploads\/2021\/10\/diagram-description-automatically-generated-2.jpeg 837w, https:\/\/www.xh86.me\/wp-content\/uploads\/2021\/10\/diagram-description-automatically-generated-2-300x184.jpeg 300w, https:\/\/www.xh86.me\/wp-content\/uploads\/2021\/10\/diagram-description-automatically-generated-2-768x472.jpeg 768w\" sizes=\"auto, (max-width: 837px) 100vw, 837px\" \/><\/p>\n<ul>\n<li>192.168.1.11\u548c192.168.1.12\u662f\u4e92\u4e3a\u5907\u4efd\u7684LVS Director, 192.168.1.11\u9ed8\u8ba4\u4e3aMASTER\uff0c 192.168.1.12\u4e3aBACKUP<\/li>\n<li>192.168.1.99\u662fLVS Director\u7684\u865a\u62dfIP\uff0c\u5f53192.168.1.11\u6b63\u5e38\u5de5\u4f5c\u65f6\uff0c\u5b83\u4f1a\u901a\u8fc7VRRPv2\u534f\u8bae\u5411\u5e7f\u64ad\u7f51\u6bb5\u53d1\u9001ARP\u6570\u636e\u5305\uff0c\u58f0\u660e192.168.1.99\u4e3a\u5176\u6240\u6709\uff0c\u5f53192.168.1.11\u5b95\u673a\u65f6\uff0c192.168.1.12\u4f1a\u7acb\u5373\u63a5\u7ba1\u8be5\u5de5\u4f5c\uff0c\u58f0\u660e192.168.1.99\u7684\u6240\u6709\u6743\u5e76\u54cd\u5e94\u7528\u6237\u8bf7\u6c42<\/li>\n<li>192.168.1.13\u548c192.168.1.14\u662f Real Server,\u00a0 \u4e0a\u9762\u6709\u76d1\u542c\u572880\u7aef\u7684Web \u670d\u52a1<\/li>\n<\/ul>\n<p>2. Keepalived\u4e3b\u673a\u5b89\u88c5\u914d\u7f6e<\/p>\n<p><strong>1. \u5728192.168.1.11\u548c192.168.1.12\u4e0a\u5b89\u88c5keepalived, \u5b89\u88c5\u5b8c\u6210\u540e\u4fee\u6539\u914d\u7f6e\u6587\u4ef6\/etc\/keepalived\/keepalived.conf\u3002<\/strong><\/p>\n<p># yum install keepalived -y<\/p>\n<p># vi \/etc\/keepalived\/keepalived.conf<\/p>\n<p>\u8be6\u7ec6\u914d\u7f6e\u53c2\u6570\u8bf4\u660e\u8bf7\u53c2\u89c1\u5b98\u65b9\u6587\u6863\uff1a<a href=\"http:\/\/www.keepalived.org\/doc\/configuration_synopsis.html\" target=\"_blank\" rel=\"noopener\">http:\/\/www.keepalived.org\/doc\/configuration_synopsis.html<\/a><\/p>\n<p><strong>2. \u914d\u7f6eMASTER\u8282\u70b9(192.168.1.11)\uff0c\u914d\u7f6e\u6587\u4ef6\u5185\u5bb9\u5982\u4e0b\u3002\u5173\u952e\u914d\u7f6e\u5185\u5bb9\u6dfb\u52a0\u4e86\u6ce8\u91ca\uff1a<\/strong><\/p>\n<p>! Configuration File for keepalived<\/p>\n<p>global_defs {<\/p>\n<p>router_id LVS_11 #\u8282\u70b9ID\uff0c\u6bcf\u4e2a\u8282\u70b9\u7684\u503c\u552f\u4e00<\/p>\n<p>vrrp_skip_check_adv_addr<\/p>\n<p>vrrp_strict #\u4e25\u683c\u9075\u5b88VRRP\uff0c\u4e09\u79cd\u60c5\u51b5\u5c06\u4f1a\u963b\u6b62keepalived (1.\u65e0VIPs, 2.unicast peers,3.IPv6 addresses in VRRP version 2)<\/p>\n<p>vrrp_garp_interval 0<\/p>\n<p>vrrp_gna_interval 0<\/p>\n<p>}<\/p>\n<p>vrrp_instance VI_1 { #\u5b9a\u4e49\u4e00\u4e2a\u5b9e\u4f8b(\u9ad8\u53ef\u7528\u96c6\u7fa4\uff09<\/p>\n<p>state MASTER #\u8282\u70b9\u5728Keepalived\u4e2d\u5b9a\u4e49\u4e3aMASTER<\/p>\n<p>interface enp0s3 #\u6307\u5b9a\u8282\u70b9\u53d1\u9001ARP\u6570\u636e\u62a5\u65f6\u4f7f\u7528\u7684\u7f51\u5173\u8bbe\u5907<\/p>\n<p>virtual_router_id 51 #Virtual Router ID, \u6570\u5b57\u683c\u5f0f\uff0c\u96c6\u7fa4\u4e2d\u7684\u6240\u6709\u8282\u70b9\u503c\u8981\u76f8\u540c\uff0c<\/p>\n<p>priority 101 #\u8282\u70b9\u4f18\u5148\u7ea7\uff0cMASTER\u8282\u70b9\u8981\u6bd4\u5176\u5b83\u8282\u70b9\u7684\u503c\u5927<\/p>\n<p>advert_int 1<\/p>\n<p>authentication {<\/p>\n<p>auth_type PASS #\u8282\u70b9\u95f4\u7684\u8ba4\u8bc1\u65b9\u5f0f\uff0c\u652f\u6301PASS, HEAD<\/p>\n<p>auth_pass keepsync #auth_type\u4e3aPASS\u65f6\u7684\u4e3b\u8bc1\u5bc6\u7801\uff0c\u8d85\u8fc78\u4f4d\u5219keepalived\u53ea\u53d6\u524d8\u4f4d<\/p>\n<p>}<\/p>\n<p>virtual_ipaddress {<\/p>\n<p>192.168.1.99 #\u914d\u7f6e\u865a\u62dfIP<\/p>\n<p>}<\/p>\n<p>}<\/p>\n<p>&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8211;\u5206\u5272\u7ebf\uff0c\u5982\u679c\u53ea\u914d\u7f6eKeepalived\u4e3b\u5907\u96c6\u7fa4\uff0c\u4e0a\u9762\u7684\u914d\u7f6e\u5c31\u53ef\u4ee5\u4e86\uff0c\u4e0b\u9762\u7684\u914d\u7f6e\u7528\u4e8e\u914d\u7f6eLVS&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8211;<\/p>\n<p>virtual_server 192.168.1.99 80 { #\u914d\u7f6eLVS\u96c6\u7fa4\u670d\u52a1\u5730\u5740\u53ca\u7aef\u53e3<\/p>\n<p>delay_loop 6<\/p>\n<p>lb_algo lc #LVS\u8bf7\u6c42\u5206\u914d\u7b97\u6cd5\uff0c\u5f53\u524d\u4e3aLC\uff0c\u8be6\u89c1LVS\u6587\u6863<\/p>\n<p>lb_kind DR #LVS\u5de5\u4f5c\u6a21\u5f0f\u4e3aDR<\/p>\n<p>persistence_timeout 50<\/p>\n<p>protocol TCP #LVS\u670d\u52a1\u534f\u8bae\u4e3aTCP<\/p>\n<p>real_server 192.168.1.13 80 { #Real Server 1 \u5730\u5740\u53ca\u7aef\u53e3<\/p>\n<p>weight 1 #Real Server 1\u6743\u91cd<\/p>\n<p>TCP_CHECK { #Real Server\u5065\u5eb7\u8bca\u65ad\u65b9\u5f0f\u4e3aTCP_CHECK, \u652f\u6301\u7684\u65b9\u5f0f\u6709TCP_CHECK, HTTP_GET, SSL_GET, MISC_CHECK<\/p>\n<p>connect_timeout 3 #\u8bca\u65ad\u95f4\u9694\u4e3a3\u79d2<\/p>\n<p>connect_port 80 #\u8bca\u65ad\u8fde\u63a5\u7aef\u53e3\u4e3a80<\/p>\n<p>}<\/p>\n<p>}<\/p>\n<p>real_server 192.168.1.14 80 { #Real Server 1 \u914d\u7f6e<\/p>\n<p>weight 1<\/p>\n<p>TCP_CHECK {<\/p>\n<p>connect_timeout 3<\/p>\n<p>connect_port 80<\/p>\n<p>}<\/p>\n<p>}<\/p>\n<p>}<\/p>\n<p><strong>3. \u914d\u7f6eBACKUP\u8282\u70b9(192.168.1.12)\uff1a<\/strong><\/p>\n<p>! Configuration File for keepalived<\/p>\n<p>global_defs {<\/p>\n<p>router_id LVS_12 #\u6bcf\u4e2a\u8282\u70b9\u552f\u4e00\uff0c\u4e0e\u5176\u5b83\u8282\u70b9\u4e0d\u5468<\/p>\n<p>vrrp_skip_check_adv_addr<\/p>\n<p>vrrp_strict<\/p>\n<p>vrrp_garp_interval 0<\/p>\n<p>vrrp_gna_interval 0<\/p>\n<p>}<\/p>\n<p>vrrp_instance VI_1 {<\/p>\n<p>state BACKUP #\u6307\u5b9a\u4e3aBACKUP\u6a21\u5f0f<\/p>\n<p>interface enp0s3<\/p>\n<p>virtual_router_id 51 #\u4e0e\u5176\u5b83\u8282\u70b9\u76f8\u540c<\/p>\n<p>priority 100 #\u4f18\u5148\u7ea7\u6bd4MASTER\u4f4e<\/p>\n<p>advert_int 1<\/p>\n<p>authentication {<\/p>\n<p>auth_type PASS<\/p>\n<p>auth_pass keepsync<\/p>\n<p>}<\/p>\n<p>virtual_ipaddress {<\/p>\n<p>192.168.1.99<\/p>\n<p>}<\/p>\n<p>}<\/p>\n<p>virtual_server 192.168.1.99 80 {<\/p>\n<p>delay_loop 6<\/p>\n<p>lb_algo lc<\/p>\n<p>lb_kind DR<\/p>\n<p>persistence_timeout 50<\/p>\n<p>protocol TCP<\/p>\n<p>real_server 192.168.1.13 80 {<\/p>\n<p>weight 1<\/p>\n<p>TCP_CHECK {<\/p>\n<p>connect_timeout 3<\/p>\n<p>connect_port 80<\/p>\n<p>nb_get_retry 3<\/p>\n<p>delay_before_retry 3<\/p>\n<p>}<\/p>\n<p>}<\/p>\n<p>real_server 192.168.1.14 80 {<\/p>\n<p>weight 1<\/p>\n<p>TCP_CHECK {<\/p>\n<p>connect_timeout 3<\/p>\n<p>connect_port 80<\/p>\n<p>}<\/p>\n<p>}<\/p>\n<p>}<\/p>\n<p>Keepalived\u4f1a\u6309TCP_CHECK\u4e2d\u914d\u7f6e\u7684connect_timeout\u65f6\u95f4\u95f4\u9694\u5c1d\u8bd5\u8fde\u63a5real server\u7684connect_port\u6307\u5b9a\u7684\u7aef\u53e3\uff0c\u5982\u679c\u6307\u5b9aserver\u7684\u6307\u5b9a\u7aef\u53e3\u4e0d\u53ef\u8fbe\uff0c\u8be5real server\u4f1a\u88ab\u4eceLVS\u96c6\u7fa4\u4e2d\u79fb\u9664\uff0c\u5f85\u8be5server\u6062\u590d\u540e\u53c8\u4f1a\u88ab\u81ea\u52a8\u52a0\u5165\u5230\u96c6\u7fa4\u3002<\/p>\n<p>\u5173\u4e8eHealth Check\u7684\u8be6\u7ec6\u4fe1\u606f\u8bf7\u53c2\u89c1\uff1a<a href=\"http:\/\/www.keepalived.org\/doc\/software_design.html#healthcheck-framework\" target=\"_blank\" rel=\"noopener\">http:\/\/www.keepalived.org\/doc\/software_design.html#healthcheck-framework<\/a><\/p>\n<p><strong>4. \u5728MASTER\u548cBACKUP\u8282\u70b9\u4e0a\u542f\u52a8\u5e76\u542f\u7528keepalived\u670d\u52a1\uff1a<\/strong><\/p>\n<p># systemctl start keepalived<\/p>\n<p># systemctl enable keepalived<\/p>\n<p>\u5982\u679cKeepalived MASTER\u8282\u70b9\u4e0a\u5b89\u88c5\u4e86ipvsadm\u7ba1\u7406\u5de5\u5177\uff0c\u53ef\u4ee5\u770b\u5230LVS\u914d\u7f6e\u5df2\u7ecf\u751f\u6210\uff1a<\/p>\n<p>[root@centos01 ~]# ipvsadm -Ln<\/p>\n<p>IP Virtual Server version 1.2.1 (size=4096)<\/p>\n<p>Prot LocalAddress:Port Scheduler Flags<\/p>\n<p>-&gt; RemoteAddress:Port Forward Weight ActiveConn InActConn<\/p>\n<p>TCP 192.168.1.99:80 lc persistent 50<\/p>\n<p>-&gt; 192.168.1.13:80 Route 1 0 0<\/p>\n<p>-&gt; 192.168.1.14:80 Route 1 0 6<\/p>\n<p><strong>5. \u5728MASTER\u548cBACKUP\u8282\u70b9\u4e0a\u542f\u7528ip_forward\uff1a<\/strong><\/p>\n<p># cat &lt;&lt; EOF &gt; \/etc\/sysctl.d\/zz-keepalived.conf<\/p>\n<p>net.ipv4.ip_forward = 1<\/p>\n<p>EOF<\/p>\n<p># sysctl &#8211;system<\/p>\n<p>\/etc\/sysctl.d\u76ee\u5f55\u4e0b, \u6587\u4ef6\u540d\u6392\u5e8f\u8d8a\u9760\u540e\uff0c\u4f18\u5148\u7ea7\u8d8a\u9ad8,\u00a0\u6240\u4ee5\u4ee5zz-..\u4f5c\u4e3a\u6587\u4ef6\u540d\u524d\u7f00<\/p>\n<p>3. Real Server\u914d\u7f6e<\/p>\n<p>LVS\u5de5\u4f5c\u5728DR\u6a21\u5f0f\u65f6\uff0cReal Server\u9700\u8981\u76f4\u63a5\u4e0e\u5ba2\u6237\u7aef\u901a\u8baf\uff0c\u56e0\u6b64\u9700\u8981\u628aVIP\u914d\u7f6e\u5728Real Server\u4e0a\uff0c\u5e76\u4e14\u4e0d\u5141\u8bb8\u4ee5\u8be5VIP\u7684\u540d\u4e49\u5411\u5e7f\u64ad\u7f51\u6bb5\u53d1\u9001ARP\u6570\u636e\u5305\uff0c\u505a\u5982\u4e0b\u914d\u7f6e\uff1a<\/p>\n<p># ifconfig enp0s3:0 192.168.1.99 netmask 255.255.255.255 up<\/p>\n<p># echo &#8220;1&#8221; &gt; \/proc\/sys\/net\/ipv4\/conf\/enp0s3\/arp_ignore<\/p>\n<p># echo &#8220;1&#8221; &gt; \/proc\/sys\/net\/ipv4\/conf\/all\/arp_ignore<\/p>\n<p># echo &#8220;2&#8221; &gt; \/proc\/sys\/net\/ipv4\/conf\/enp0s3\/arp_announce<\/p>\n<p># echo &#8220;2&#8221; &gt; \/proc\/sys\/net\/ipv4\/conf\/all\/arp_announce<\/p>\n<p>&nbsp;<\/p>\n<p>\u81f3\u6b64\uff0c\u76f8\u5173\u914d\u7f6e\u5168\u90e8\u5b8c\u6210\u3002\u5982\u679cReal Server\u4e0a\u7684Web\u670d\u52a1\u5de5\u4f5c\u6b63\u5e38\uff0c\u901a\u8fc7\u6d4f\u89c8\u5668\u8bbf\u95eeVIP\u5c31\u53ef\u4ee5\u6b63\u5e38\u6253\u5f00Real Server\u4e0a\u7684Web\u670d\u52a1\u4e86\uff0c\u5982\u679cMASTER\u8282\u70b9\u505c\u6b62\u670d\u52a1\uff0cBACKUP\u8282\u70b9\u4f1a\u7acb\u5373\u63a5\u7ba1\uff0c\u5f85MASTER\u6062\u590d\u540e\u5219\u91cd\u65b0\u63a5\u7ba1\u670d\u52a1\u3002\u5982\u679c\u67d0\u4e00\u4e2aReal Server\u505c\u6b62\uff0c\u5219\u8be5Real Server\u5219\u4f1a\u88ab\u4eceLVS\u96c6\u7fa4\u4e2d\u79fb\u52a8\uff0c\u6062\u590d\u540e\u53c8\u4f1a\u88ab\u81ea\u52a8\u52a0\u5165\u5230LVS\u96c6\u7fa4\u4e2d\u3002<\/p>\n<p>\u5982\u679ckeepalived.conf\u6587\u4ef6\u4e2d\u4e0d\u914d\u7f6evirtual_server, keepalived\u5c31\u5355\u7eaf\u63d0\u4f9b\u53cc\u673a\u70ed\u5907\u670d\u52a1\uff0c\u8ba9VIP\u5728\u4e3b\u5907\u673a\u4e4b\u95f4\u6f02\u79fb\u3002<\/p>\n<p>\u4e3a\u4fdd\u8bc1Keepalived \u8282\u70b9\u548cReal Server\u4e4b\u95f4\u901a\u8baf\u6b63\u5e38\uff0c\u6700\u597d\u505c\u6389\u5404\u4e2aServer\u4e0a\u7684\u548c\u9632\u706b\u5899(firewalld)\u670d\u52a1\uff0c\u6216\u8005\u6bcf\u6539\u52a8\u4e00\u6b21\u914d\u7f6e\u90fd\u9700\u8981\u91cd\u65b0\u6267\u884c\u4e00\u4e0biptables -F\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4f7f\u7528Keepalived\u53ef\u4ee5\u5f25\u8865LVS\u7684\u7f3a\u9677\uff0c\u8fd8\u53ef\u4ee5\u5b9e\u73b0LVS Director\u7684\u5197\u4f59\u5907\u4efd\uff0ckeepalive [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12],"tags":[],"class_list":["post-2489","post","type-post","status-publish","format-standard","hentry","category-linux"],"_links":{"self":[{"href":"https:\/\/www.xh86.me\/index.php?rest_route=\/wp\/v2\/posts\/2489","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.xh86.me\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.xh86.me\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.xh86.me\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.xh86.me\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2489"}],"version-history":[{"count":1,"href":"https:\/\/www.xh86.me\/index.php?rest_route=\/wp\/v2\/posts\/2489\/revisions"}],"predecessor-version":[{"id":2491,"href":"https:\/\/www.xh86.me\/index.php?rest_route=\/wp\/v2\/posts\/2489\/revisions\/2491"}],"wp:attachment":[{"href":"https:\/\/www.xh86.me\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2489"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.xh86.me\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2489"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.xh86.me\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2489"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}