![\"\"](\"https:\/\/i0.wp.com\/www.qiangzhenshuai.com\/wp-content\/uploads\/2023\/01\/\u9ad8\u53ef\u7528VRR1-1.png?resize=640%2C263&ssl=1\")
<\/a><\/p>\nKeepalived \u670d\u52a1\u7684\u4e09\u4e2a\u91cd\u8981\u529f\u80fd<\/h2>\n\u7ba1\u7406 LVS \u8d1f\u8f7d\u5747\u8861\u8f6f\u4ef6<\/h3>\n
\u65e9\u671f\u7684 LVS \u8f6f\u4ef6\uff0c\u9700\u8981\u901a\u8fc7\u547d\u4ee4\u884c\u6216\u811a\u672c\u5b9e\u73b0\u7ba1\u7406\uff0c\u5e76\u4e14\u6ca1\u6709\u9488\u5bf9 LVS \u8282\u70b9\u7684\u5065\u5eb7\u68c0\u67e5\u529f\u80fd\u3002\u4e3a\u4e86\u89e3\u51b3 LVS \u7684\u8fd9\u4e9b\u4f7f\u7528\u4e0d\u4fbf\u7684\u95ee\u9898\uff0cKeepalived\u5c31\u8bde\u751f\u4e86\uff0c\u53ef\u4ee5\u8bf4\uff0cKeepalived\u8f6f\u4ef6\u8d77\u521d\u662f\u4e13\u4e3a\u4e86\u89e3\u51b3 LVS \u7684\u95ee\u9898\u800c\u8bde\u751f\u7684\u3002\u56e0\u6b64\uff0cKeepalived\u548cLVS\u7684\u611f\u60c5\u5f88\u6df1\uff0c\u5b83\u4eec\u7684\u5173\u7cfb\u5982\u540c\u592b\u59bb\u4e00\u6837\uff0c\u53ef\u4ee5\u7d27\u5bc6\u7684\u7ed3\u5408\uff0c\u6109\u5feb\u7684\u5de5\u4f5c\u3002Keepalived \u53ef\u4ee5\u901a\u8fc7\u8bfb\u53d6\u81ea\u8eab\u7684\u914d\u7f6e\u6587\u4ef6\u5b9e\u73b0\u901a\u8fc7\u66f4\u5e95\u5c42\u7684\u63a5\u53e3\u76f4\u63a5\u7ba1\u7406 LVS \u7684\u914d\u7f6e\u4ee5\u53ca\u63a7\u5236\u670d\u52a1\u7684\u542f\u52a8\u3001\u505c\u6b62\u7b49\u529f\u80fd\uff0c\u8fd9\u4f7f\u5f97 LVS \u7684\u5e94\u7528\u5c31\u66f4\u52a0\u7b80\u5355\u65b9\u4fbf\u4e86<\/p>\n
\u5b9e\u73b0\u5bf9 LVS \u96c6\u7fa4\u8282\u70b9\u5065\u5eb7\u68c0\u67e5\u529f\u80fd\uff08healthcheck\uff09<\/h3>\n
Keepalived \u53ef\u4ee5\u901a\u8fc7\u5728\u81ea\u8eab\u7684keepalived.conf\u6587\u4ef6\u91cc\u914d\u7f6e LVS \u7684\u8282\u70b9 IP \u548c\u76f8\u5173\u53c2\u6570\u5b9e\u73b0\u5bf9 LVS \u7684\u76f4\u63a5\u7ba1\u7406\uff1b\u9664\u6b64\u4e4b\u5916\uff0c\u5f53 LVS \u96c6\u7fa4\u4e2d\u7684\u67d0\u4e00\u4e2a\u751a\u81f3\u662f\u51e0\u4e2a\u8282\u70b9\u670d\u52a1\u5668\u540c\u65f6\u53d1\u751f\u6545\u969c\u65e0\u6cd5\u63d0\u4f9b\u670d\u52a1\u65f6\uff0cKeepalived \u670d\u52a1\u4f1a\u81ea\u52a8\u5c06\u5931\u6548\u7684\u8282\u70b9\u670d\u52a1\u5668\u4ece LVS \u7684\u6b63\u5e38\u8f6c\u53d1\u961f\u5217\u4e2d\u6e05\u695a\u51fa\u53bb\uff0c\u5e76\u8f6c\u6362\u5230\u522b\u7684\u6b63\u5e38\u8282\u70b9\u670d\u52a1\u5668\u4e0a\uff0c\u4ece\u800c\u4fdd\u8bc1\u6700\u7ec8\u7528\u6237\u7684\u8bbf\u95ee\u4e0d\u53d7\u5f71\u54cd\uff1b\u5f53\u6545\u969c\u7684\u8282\u70b9\u670d\u52a1\u5668\u88ab\u4fee\u590d\u540e\uff0cKeepalived \u670d\u52a1\u53c8\u4f1a\u81ea\u52a8\u5730\u628a\u5b83\u4eec\u52a0\u5165\u5230\u6b63\u5e38\u8f6c\u53d1\u961f\u5217\u4e2d\uff0c\u5bf9\u5ba2\u6237\u63d0\u4f9b\u670d\u52a1<\/p>\n
\u4f5c\u4e3a\u7cfb\u7edf\u7f51\u7edc\u670d\u52a1\u7684\u9ad8\u53ef\u7528\u529f\u80fd\uff08failover\uff09<\/h3>\n
Keepalived \u53ef\u4ee5\u5b9e\u73b0\u4efb\u610f\u4e24\u53f0\u4e3b\u673a\u4e4b\u95f4\uff0c\u4f8b\u5982 Master \u548c Backup \u4e3b\u673a\u4e4b\u95f4\u7684\u6545\u969c\u8f6c\u79fb\u548c\u81ea\u52a8\u5207\u6362\uff0c\u8fd9\u4e2a\u4e3b\u673a\u53ef\u4ee5\u662f\u666e\u901a\u7684\u4e0d\u80fd\u505c\u673a\u7684\u4e1a\u52a1\u670d\u52a1\u5668\uff0c\u4e5f\u53ef\u4ee5\u662f LVS \u8d1f\u8f7d\u5747\u8861\u3001Nginx \u53cd\u5411\u4ee3\u7406\u8fd9\u6837\u7684\u670d\u52a1\u5668<\/p>\n
Keepalived \u9ad8\u53ef\u7528\u670d\u52a1\u8111\u88c2\u95ee\u9898<\/h2>\n\u4ec0\u4e48\u662f\u8111\u88c2\uff1f<\/h3>\n
\u7531\u4e8e\u67d0\u4e9b\u539f\u56e0\uff0c\u5bfc\u81f4\u4e24\u53f0\u9ad8\u53ef\u7528\u670d\u52a1\u5668\u5728\u6307\u5b9a\u65f6\u95f4\u5185\uff0c\u65e0\u6cd5\u68c0\u6d4b\u5230\u5bf9\u65b9\u7684\u5fc3\u8df3\u6d88\u606f\uff0c\u5404\u81ea\u53d6\u5f97\u8d44\u6e90\u53ca\u670d\u52a1\u7684\u6240\u6709\u6743\uff0c\u800c\u6b64\u65f6\u7684\u4e24\u53f0\u9ad8\u53ef\u7528\u670d\u52a1\u5668\u90fd\u8fd8\u6d3b\u7740\u5e76\u5728\u6b63\u5e38\u8fd0\u884c\uff0c\u8fd9\u6837\u5c31\u4f1a\u5bfc\u81f4\u540c\u4e00\u4e2a IP \u6216\u670d\u52a1\u5728\u4e24\u7aef\u540c\u65f6\u5b58\u5728\u53d1\u751f\u51b2\u7a81\uff0c\u6700\u4e25\u91cd\u7684\u662f\u4e24\u53f0\u4e3b\u673a\u5360\u7528\u540c\u4e00\u4e2a VIP \u5730\u5740\uff0c\u5f53\u7528\u6237\u5199\u5165\u6570\u636e\u65f6\u53ef\u80fd\u4f1a\u5206\u522b\u5199\u5165\u5230\u4e24\u7aef\uff0c\u8fd9\u53ef\u80fd\u4f1a\u5bfc\u81f4\u670d\u52a1\u5668\u4e24\u7aef\u7684\u6570\u636e\u4e0d\u4e00\u81f4\u6216\u9020\u6210\u6570\u636e\u4e22\u5931\uff0c\u8fd9\u79cd\u60c5\u51b5\u5c31\u88ab\u79f0\u4e3a\u8111\u88c2<\/p>\n
\u5bfc\u81f4\u8111\u88c2\u53d1\u751f\u7684\u539f\u56e0<\/h3>\n\u4e00\u822c\u6765\u8bf4\uff0c\u8111\u88c2\u7684\u53d1\u751f\uff0c\u6709\u4ee5\u4e0b\u51e0\u79cd\u539f\u56e0<\/h4>\n
\u9ad8\u53ef\u7528\u670d\u52a1\u5668\u4e4b\u95f4\u5fc3\u8df3\u7ebf\u94fe\u8def\u6545\u969c\uff0c\u5bfc\u81f4\u65e0\u6cd5\u6b63\u5e38\u901a\u4fe1\u3002<\/p>\n
\u5fc3\u8df3\u7ebf\u574f\u4e86\uff08\u5305\u62ec\u65ad\u4e86\uff0c\u8001\u5316\uff09<\/p>\n
\u7f51\u5361\u53ca\u76f8\u5173\u9a71\u52a8\u574f\u4e86\uff0cIP \u914d\u7f6e\u53ca\u51b2\u7a81\u95ee\u9898\uff08\u7f51\u5361\u76f4\u8fde\uff09<\/p>\n
\u5fc3\u8df3\u7ebf\u8fde\u63a5\u7684\u8bbe\u5907\u6545\u969c\uff08\u7f51\u5361\u53ca\u4ea4\u6362\u673a\uff09<\/p>\n
\u9ad8\u53ef\u7528\u670d\u52a1\u5668\u4e0a\u5f00\u542f\u4e86 iptables \u9632\u706b\u5899\u963b\u6321\u4e86\u5fc3\u8df3\u6d88\u606f\u4f20\u8f93\u3002<\/p>\n
\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<\/p>\n
\u5176\u4ed6\u670d\u52a1\u914d\u7f6e\u4e0d\u5f53\u7b49\u539f\u56e0\uff0c\u5982\u5fc3\u8df3\u65b9\u5f0f\u4e0d\u540c\uff0c\u5fc3\u8df3\u5e7f\u64ad\u51b2\u7a81\u3001\u8f6f\u4ef6 BUG\u7b49\u3002<\/p>\n
\u6ce8\u610f\uff1aKeepalived \u914d\u7f6e\u91cc\u540c\u4e00 VRRP \u5b9e\u4f8b\u5982\u679c virtual_router_id \u53c2\u6570\u4e24\u7aef\u914d\u7f6e\u4e0d\u4e00\u81f4\uff0c\u4e5f\u4f1a\u5bfc\u81f4\u8111\u88c2\u95ee\u9898\u53d1\u751f\u3002<\/p>\n
\u89e3\u51b3\u8111\u88c2\u7684\u5177\u4f53\u65b9\u6848<\/h3>\n
\u5728\u5b9e\u9645\u751f\u4ea7\u73af\u5883\u4e2d\uff0c\u53ef\u4ee5\u4ece\u4ee5\u4e0b\u51e0\u4e2a\u65b9\u9762\u6765\u9632\u6b62\u8111\u88c2\u95ee\u9898\u7684\u53d1\u751f<\/p>\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\u591f\u4f20\u9001\u5fc3\u8df3\u6d88\u606f<\/p>\n
\u5f53\u68c0\u6d4b\u5230\u8111\u88c2\u65f6\u5f3a\u884c\u5173\u95ed\u4e00\u4e2a\u5fc3\u8df3\u8282\u70b9\uff08\u8fd9\u4e2a\u529f\u80fd\u9700\u8981\u7279\u6b8a\u8bbe\u5907\u652f\u6301\uff0c\u5982Stonith\u3001fence\uff09\u3002\u76f8\u5f53\u4e8e\u5907\u8282\u70b9\u63a5\u6536\u4e0d\u5230\u5fc3\u8df3\u6d88\u606f\uff0c\u53d1\u9001\u5173\u673a\u547d\u4ee4\u901a\u8fc7\u5355\u72ec\u7684\u7ebf\u8def\u5173\u95ed\u4e3b\u8282\u70b9\u7684\u7535\u6e90<\/p>\n
\u505a\u597d\u5bf9\u8111\u88c2\u7684\u76d1\u63a7\u62a5\u8b66\uff08\u5982\u90ae\u4ef6\u53ca\u624b\u673a\u77ed\u4fe1\u7b49\u6216\u503c\u73ed\uff09\uff0c\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\u4fe1\u5c31\u6709\u4e0a\u884c\u548c\u4e0b\u884c\u7684\u533a\u522b\u3002\u62a5\u8b66\u4fe1\u606f\u62a5\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\uff0c\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<\/p>\n
\u5982\u679c\u5f00\u542f\u9632\u706b\u5899\uff0c\u4e00\u5b9a\u8981\u8ba9\u5fc3\u8df3\u6d88\u606f\u901a\u8fc7\uff0c\u4e00\u822c\u901a\u8fc7\u5141\u8bb8 IP \u6bb5\u7684\u5f62\u5f0f<\/p>\n
\u9ad8\u53ef\u7528\u6838\u5fc3\u6982\u5ff5\u603b\u7ed3<\/h2>\n
\u5982\u4f55\u786e\u5b9a\u8c01\u662f\u4e3b\u8282\u70b9\u8c01\u662f\u5907\u8282\u70b9\u3002(\u6295\u7968\u9009\u4e3e\uff1f\u4f18\u5148\u7ea7\uff1f \u914d\u7f6e\u6587\u4ef6\u4e2d\u8bbe\u7f6e)<\/p>\n
\u5982\u679cMaster\u6545\u969c\uff0cBackup\u81ea\u52a8\u63a5\u7ba1\uff0c\u90a3Master\u6062\u590d\u540e\u4f1a\u593a\u6743\u5417\uff1f(\u62a2\u5360\u5f0f\u3001\u975e\u62a2\u5360\u5f0f)<\/p>\n
\u5982\u679c\u4e24\u53f0\u670d\u52a1\u5668\u90fd\u8ba4\u4e3a\u81ea\u5df1\u662fMaster\u4f1a\u51fa\u73b0\u4ec0\u4e48\u95ee\u9898\uff1f (\u90fd\u8ba4\u4e3a\u5bf9\u65b9\u6302\u4e86) (\u8111\u88c2)<\/p>\n
2.Keepalived\u9ad8\u53ef\u7528\u5b89\u88c5\u914d\u7f6e<\/h1>\n\u73af\u5883\u51c6\u5907<\/h2>\nMaster<\/h4>\n
[root@lb ~]$ hostname -I
\n10.0.0.63 172.16.1.63<\/p>\n
Backup<\/h4>\n
[root@lb01 ~]$ hostname -I
\n10.0.0.163 172.16.1.163<\/p>\n
VIP<\/h4>\n
10.0.0.3<\/p>\n
\u5728master\u4e0ebackup\u4e0a\u5206\u522b\u5b89\u88c5keepalived<\/h4>\n
[root@lb ~]$ yum install keepalived -y<\/p>\n
[root@lb01 ~]$ yum install keepalived -y<\/p>\n
keepalived\u914d\u7f6e\u6587\u4ef6
\n\u5206\u4e3a\u4e09\u4e2a\u90e8\u5206<\/h4>\n
global_defs\uff1a\u5168\u5c40\u5b9a\u4e49\u90e8\u5206<\/p>\n
vrrp_instance\uff1avrrp\u5b9e\u4f8b \u8fd9\u91cc\u9762\u914d\u7f6evip \u4e3b\/\u5907 \u4f18\u5148\u7ea7 \u00a0 id\u53f7<\/p>\n
virtual_server\uff1alvs\u4e13\u7528 \u00a0 keepalived for lvs<\/p>\n
[root@lb ~]$ cat \/etc\/keepalived\/keepalived.conf<\/p>\n
! Configuration File for keepalived<\/p>\n
global_defs {\u00a0 \u00a0 \u00a0#\u5b9e\u73b0\u76d1\u63a7\u62a5\u8b66\u529f\u80fd
\nnotification_email {\u00a0 \u00a0 #\u76d1\u63a7\u62a5\u8b66\u90ae\u4ef6\u53d1\u9001\u901a\u77e5\u4eba\u4fe1\u606f
\nacassen@firewall.loc
\nfailover@firewall.loc
\nsysadmin@firewall.loc
\n}
\nnotification_email_from Alexandre.Cassen@firewall.loc\u00a0 \u00a0 #\u5b9a\u4e49\u62a5\u8b66\u670d\u52a1\u5668\u4fe1\u606f
\nsmtp_server 192.168.200.1\u00a0 \u00a0#\u6307\u5b9asmtp\u670d\u52a1\u5668\u5730\u5740
\nsmtp_connect_timeout 30\u00a0 \u00a0 #\u6307\u5b9asmtp\u8fde\u63a5\u8d85\u65f6\u65f6\u95f4
\nrouter_id LVS_DEVEL\u00a0 #\u8868\u793a\u4e3b\u673a\u8eab\u4efd\u4fe1\u606f
\nvrrp_skip_check_adv_addr #\u9ed8\u8ba4\u662f\u4e0d\u8df3\u8fc7\u68c0\u67e5\uff0c\u68c0\u67e5\u6536\u5230\u7684VRRP\u901a\u8fc7\u4e2d\u7684\u6240\u6709\u5730\u5740\u53ef\u80fd\u4f1a\u6bd4\u8f83\u8017\u65f6\uff0c\u8bbe\u7f6e\u6b64\u547d\u4ee4\u7684\u610f\u601d\u662f\uff0c\u5982\u679c\u901a\u544a\u4e8e\u63a5\u6536\u7684\u4e0a\u4e00\u4e2a\u901a\u8fc7\u6765\u81ea\u76f8\u540c\u7684master\u8def\u7531\u5668\uff0c\u5219\u4e0d\u6267\u884c\u68c0\u67e5\uff0c\u4e5f\u5c31\u662f\u8df3\u8fc7\u68c0\u67e5\u3002
\nvrrp_strict\u00a0 #\u4e25\u683cVRRP\u534f\u8bae\uff0c\u963b\u6b62keepalived\u542f\u52a8\u6709\u51e0\u79cd\u60c5\u51b5\uff0c1\u6ca1\u6709vip\uff0c2\u5355\u64ad\u90bb\u5c45\uff0c3\u5728VRRP\u7248\u672c2\u4e2d\u6709ipv6\u5730\u5740
\nvrrp_garp_interval 0\u00a0 #\u5728\u4e00\u4e2a\u63a5\u53e3\u53d1\u9001\u7684\u4e24\u4e2aarp\u4e4b\u95f4\u7684\u5ef6\u8fdf\uff0c\u53ef\u4ee5\u662f\u6beb\u7c73\u7ea7
\nvrrp_gna_interval 0
\n}<\/p>\n
vrrp_instance VI_1 {\u00a0 \u00a0 #\u4e00\u4e2a\u914d\u7f6e\u6587\u4ef6\u53ef\u4ee5\u6709\u591a\u4f8b\uff0c\u4e0d\u540c\u4e3b\u673a\u4e4b\u95f4\u4e92\u4e3a\u4e3b\u5907\uff0c\u5b9e\u4f8b\u540d\u79f0\u5e94\u8be5\u4e00\u81f4
\nstate MASTER\u00a0 \u00a0#\u72b6\u6001\u4e3aMASTER\uff0c\u5907\u8282\u70b9\u72b6\u6001\u9700\u8981\u4e3aBACKUP
\ninterface eth0\u00a0 #\u901a\u4fe1\u63a5\u53e3\u4e3aeth0\uff0c\u6b64\u53c2\u6570\u5907\u8282\u70b9\u8bbe\u7f6e\u548c\u4e3b\u8282\u70b9\u76f8\u540c
\nvirtual_router_id 51\u00a0 #\u5b9e\u4f8bID\u4e3a51\uff0ckeepalived.conf\u91cc\u552f\u4e00.\u4e3b\u5907\u4e4b\u95f4 id\u4fdd\u6301\u4e00\u81f4
\npriority 100\u00a0 #\u4f18\u5148\u7ea7\u51b3\u5b9a\u4e3b\u6216\u8005\u5907\u8eab\u4efd \u4f18\u5148\u7ea7\u8d8a\u9ad8\u8d8a\u6709\u53ef\u80fd\u6210\u4e3a\u4e3b\uff0c\u4e3b\u5907\u4e4b\u95f4\u5dee50\u5373\u53ef
\nadvert_int 1\u00a0 #\u901a\u4fe1\u68c0\u67e5\u95f4\u9694\u65f6\u95f41\u79d2
\nauthentication {
\nauth_type PASS\u00a0 #PASS\u8ba4\u8bc1\u7c7b\u578b\uff0c\u6b64\u53c2\u6570\u5907\u8282\u70b9\u8bbe\u7f6e\u548c\u4e3b\u8282\u70b9\u76f8\u540c
\nauth_pass 1111\u00a0 #\u5bc6\u7801\u662f1111\uff0c\u6b64\u53c2\u6570\u5907\u8282\u70b9\u8bbe\u7f6e\u548c\u4e3b\u8282\u70b9\u76f8\u540c
\n}
\nvirtual_ipaddress { #\u865a\u62dfIP\uff0c\u5373VIP\uff0c\u5b50\u7f51\u63a9\u7801\u4e3a24\u4f4d 10.0.0.3\/24 dev eth0 label eth0:0
\n192.168.200.16
\n192.168.200.17
\n192.168.200.18
\n}
\n}<\/p>\n
lb\u4fee\u6539\u914d\u7f6e\u6587\u4ef6<\/h4>\n
[root@lb ~]$ cp \/etc\/keepalived\/keepalived.conf{,.bak}<\/p>\n
[root@lb ~]$ cat \/etc\/keepalived\/keepalived.conf
\nglobal_defs {
\nrouter_id lb
\n}
\nvrrp_instance VI_1 {
\nstate MASTER
\ninterface eth0
\nvirtual_router_id 50
\npriority 150
\nadvert_int 1
\nauthentication {
\nauth_type PASS
\nauth_pass 1111
\n}
\nvirtual_ipaddress {
\n10.0.0.3\/24 dev eth0 label eth0:0
\n}
\n}<\/p>\n
lb01\u4fee\u6539\u914d\u7f6e\u6587\u4ef6<\/h4>\n
[root@lb01 ~]$ cp \/etc\/keepalived\/keepalived.conf{,.bak}<\/p>\n
[root@lb01 ~]$ cat \/etc\/keepalived\/keepalived.conf
\nglobal_defs {
\nrouter_id lb01
\n}
\nvrrp_instance VI_1 {
\nstate BACKUP
\ninterface eth0
\nvirtual_router_id 50
\npriority 100
\nadvert_int 1
\nauthentication {
\nauth_type PASS
\nauth_pass 1111
\n}
\nvirtual_ipaddress {
\n10.0.0.3\/24 dev eth0 label eth0:0
\n}
\n}<\/p>\n
\u542f\u52a8keepalived<\/h4>\n
[root@lb ~]$ systemctl start keepalived.service
\n[root@lb ~]$ systemctl enable keepalived.service<\/p>\n
[root@lb01 ~]$ systemctl start keepalived.service
\n[root@lb01 ~]$ systemctl enable keepalived.service<\/p>\n
\u68c0\u67e5\u8fdb\u7a0b<\/h4>\n
[root@lb ~]$ ps -ef | grep keep
\nroot 15162 1 0 12:21 ? 00:00:00 \/usr\/sbin\/keepalived -D
\nroot 15163 15162 0 12:21 ? 00:00:00 \/usr\/sbin\/keepalived -D
\nroot 15164 15162 0 12:21 ? 00:00:00 \/usr\/sbin\/keepalived -D
\nroot 15166 11281 0 12:21 pts\/0 00:00:00 grep –color=auto keep<\/p>\n
[root@lb01 ~]$ ps -ef | grep keep
\nroot 5373 1 0 12:22 ? 00:00:00 \/usr\/sbin\/keepalived -D
\nroot 5374 5373 0 12:22 ? 00:00:00 \/usr\/sbin\/keepalived -D
\nroot 5375 5373 0 12:22 ? 00:00:00 \/usr\/sbin\/keepalived -D
\nroot 5394 1873 0 12:24 pts\/0 00:00:00 grep –color=auto keep<\/p>\n
3.Keepalived\u9ad8\u53ef\u7528\u5730\u5740\u6f02\u79fb<\/h1>\n\u5728Master\u4e0a\u67e5\u770bvip\u5730\u5740<\/h4>\n
[root@lb ~]$ ip a | grep 10.0.0.3
\ninet 10.0.0.3\/24 scope global secondary eth0:0<\/p>\n
\u505c\u6b62Master\u4e0a\u7684keepalived, \u68c0\u6d4bvip\u5df2\u4e0d\u5b58\u5728<\/h4>\n
[root@lb ~]$ systemctl stop keepalived.service
\n[root@lb ~]$ ip a | grep 10.0.0.3<\/p>\n
\u5728Backup\u4e0a\u67e5\u770bvip\u5730\u5740\uff08\u5728Naster\u4e0a\u505c\u6b62\uff09<\/h4>\n
[root@lb01 ~]$ ip a | grep 10.0.0.3
\ninet 10.0.0.3\/24 scope global secondary eth0:0<\/p>\n
\u6b64\u65f6\u91cd\u65b0\u542f\u52a8Master\u4e0a\u7684Keepalived,\u4f1a\u53d1\u73b0VIP\u88ab\u5f3a\u884c\u62a2\u5360<\/h4>\n
[root@lb ~]$ systemctl start keepalived.service
\n[root@lb ~]$ ip a | grep 10.0.0.3
\ninet 10.0.0.3\/24 scope global secondary eth0:0<\/p>\n
4.Keepalived\u9ad8\u53ef\u7528\u975e\u62a2\u5360\u5f0f<\/h1>\n
\u901a\u5e38master\u670d\u52a1\u6545\u969c\u540ebackup\u4f1a\u53d8\u6210master\uff0c\u4f46\u662f\u5f53master\u670d\u52a1\u53c8\u6062\u590d\u7684\u65f6\u5019\uff0cmaster\u4f1a\u62a2\u5360VIP\uff0c\u8fd9\u6837\u5c31\u4f1a\u53d1\u751f\u4e24\u6b21\u5207\u6362\u5bf9\u4e1a\u52a1\u7e41\u5fd9\u7684\u7f51\u7ad9\u6765\u8bf4\u5e76\u4e0d\u662f\u592a\u53cb\u597d\uff0c\u6b64\u65f6\u6211\u4eec\u53ef\u4ee5\u914d\u7f6ekeepalived\u4e3a\u975e\u62a2\u5360\u5f0f(\u524d\u63d0\u4e24\u53f0\u4e3b\u673a\u7684\u786c\u4ef6\u914d\u7f6e\u4fe1\u606f\u4e00\u81f4)<\/p>\n
\u914d\u7f6e\u975e\u62a2\u5360\u5f0f\u6b65\u9aa4\u5982\u4e0b<\/h4>\n
\u4e24\u4e2a\u8282\u70b9\u7684state\u90fd\u5fc5\u987b\u914d\u7f6e\u4e3aBACKUP(\u5b98\u65b9\u5efa\u8bae)<\/p>\n
\u4e24\u4e2a\u8282\u70b9\u90fd\u5728vrrp_instance\u4e2d\u6dfb\u52a0nopreempt\u53c2\u6570<\/p>\n
\u5176\u4e2d\u4e00\u4e2a\u8282\u70b9\u7684\u4f18\u5148\u7ea7\u5fc5\u987b\u8981\u9ad8\u4e8e\u53e6\u5916\u4e00\u4e2a\u8282\u70b9\u7684\u4f18\u5148\u7ea7\u3002\u4e24\u53f0\u670d\u52a1\u5668\u90fd\u89d2\u8272\u72b6\u6001\u542f\u7528nopreempt\u540e\uff0c\u5fc5\u987b\u4fee\u6539\u89d2\u8272\u72b6\u6001\u7edf\u4e00\u4e3aBACKUP\uff0c\u552f\u4e00\u7684\u533a\u5206\u5c31\u662f\u4f18\u5148\u7ea7<\/p>\n
lb\u914d\u7f6e\u6587\u4ef6<\/h4>\n
[root@lb ~]$ cat \/etc\/keepalived\/keepalived.conf
\nglobal_defs {
\nrouter_id lb
\n}
\nvrrp_instance VI_1 {
\nstate BACKUP
\nnopreempt
\ninterface eth0
\nvirtual_router_id 50
\npriority 150
\nadvert_int 1
\nauthentication {
\nauth_type PASS
\nauth_pass 1111
\n}
\nvirtual_ipaddress {
\n10.0.0.3\/24 dev eth0 label eth0:0
\n}
\n}<\/p>\n
lb01\u914d\u7f6e\u6587\u4ef6<\/h4>\n
[root@lb01 ~]$ cat \/etc\/keepalived\/keepalived.conf
\nglobal_defs {
\nrouter_id lb01
\n}
\nvrrp_instance VI_1 {
\nstate BACKUP
\nnopreempt
\ninterface eth0
\nvirtual_router_id 50
\npriority 100
\nadvert_int 1
\nauthentication {
\nauth_type PASS
\nauth_pass 1111
\n}
\nvirtual_ipaddress {
\n10.0.0.3\/24 dev eth0 label eth0:0
\n}
\n}<\/p>\n
lb keepalived\u505c\u6b62\uff0c\u91cd\u542f\uff0c\u6d4b\u8bd5<\/h4>\n
[root@lb ~]$ ip a | grep 10.0.0.3
\ninet 10.0.0.3\/24 scope global secondary eth0:0
\n[root@lb ~]$ systemctl stop keepalived.service<\/p>\n
[root@lb ~]$ ip a | grep 10.0.0.3<\/p>\n
[root@lb ~]$ systemctl start keepalived.service
\n[root@lb ~]$ ip a | grep 10.0.0.3<\/p>\n
lb01 keepalived\u6d4b\u8bd5<\/h4>\n
[root@lb01 ~]$ ip a | grep 10.0.0.3
\ninet 10.0.0.3\/24 scope global secondary eth0:0<\/p>\n
[root@lb01 ~]$ systemctl stop keepalived.service<\/p>\n
[root@lb01 ~]$ systemctl start keepalived.service
\n[root@lb01 ~]$ ip a | grep 10.0.0.3<\/p>\n
\u6ce8\u610f\u4e8b\u9879<\/h4>\n
\u5f53\u9ad8\u4f18\u5148\u7ea7\u673a\u5668\u8054\u673a\u65f6\uff0cVRRP\u901a\u5e38\u4f1a\u62a2\u5360\u4f4e\u4f18\u5148\u7ea7\u673a\u5668<\/p>\n
\u201cnopreempt\u201d\u5141\u8bb8\u4f4e\u4f18\u5148\u7ea7\u673a\u5668\u7ef4\u62a4\u4e3b\u89d2\u8272\uff0c\u5373\u4f7f\u9ad8\u4f18\u5148\u7ea7\u673a\u5668\u91cd\u65b0\u8054\u673a<\/p>\n
\u8981\u4f7f\u5176\u5de5\u4f5c\uff0c\u6b64\u9879\u7684\u521d\u59cb\u72b6\u6001\u5fc5\u987b\u662fBACKUP<\/p>\n
5.keepalived\u76d1\u63a7nginx\u9ad8\u53ef\u7528<\/h1>\n
keepalived \u53ea\u5728keepalived\u670d\u52a1\u5173\u95ed\u6216\u65ad\u7f51,\u670d\u52a1\u5668\u5b95\u673a, \u624d\u4f1a\u8fdb\u884c\u4e3b\u5907\u5207\u6362<\/p>\n
\u8981\u4f7f\u7528keepalived\u76d1\u63a7\u67d0\u4e2a\u670d\u52a1,\u9700\u8981\u4e66\u5199\u76d1\u63a7\u811a\u672c,\u7136\u540ekeepalived \u5b9a\u65f6\u6267\u884c\u811a\u672c<\/p>\n
\u76d1\u63a7\u811a\u672c\u601d\u8def<\/h4>\n
\u68c0\u67e5nginx\u8fdb\u7a0b\/\u7aef\u53e3\u662f\u5426\u5b58\u5728
\n\u5982\u679c\u4e0d\u5b58\u5728,\u5219\u91cd\u542fnginx
\n\u7b49\u5f852-3\u79d2
\n\u518d\u6b21\u68c0\u67e5nginx\u8fdb\u7a0b\/\u7aef\u53e3\u662f\u5426\u5b58\u5728\uff1a
\n\u4ecd\u7136\u4e0d\u5b58\u5728\uff0c\u5c31\u628akeepaliived\u5173\u95ed<\/p>\n
\u811a\u672c(\u52a0\u6267\u884c\u6743\u9650)<\/h4>\n
[root@lb ~]$ ll \/server\/scripts\/chk_lb.sh -d
\n-rw-r–r– 1 root root 129 Jan 12 15:55 \/server\/scripts\/chk_lb.sh
\n[root@lb ~]$ chmod +x \/server\/scripts\/chk_lb.sh
\n[root@lb ~]$ ll \/server\/scripts\/chk_lb.sh -d
\n-rwxr-xr-x 1 root root 129 Jan 12 15:55 \/server\/scripts\/chk_lb.sh<\/p>\n
[root@lb ~]$ cat \/server\/scripts\/chk_lb.sh
\n#!\/bin\/bash<\/p>\n
proc_cnt=`ps -C nginx –no-heading | wc -l`
\nif [ $proc_cnt -eq 0 ];then
\nsystemctl start nginx
\nsleep 3
\nproc_cnt=`ps -C nginx –no-heading | wc -l`
\nif [ $proc_cnt -eq 0 ];then
\nsystemctl stop keepalived
\nfi
\nfi<\/p>\n
keepaliived\u6267\u884c\u76d1\u63a7\u811a\u672c<\/h4>\n
[root@lb ~]$ cat \/etc\/keepalived\/keepalived.conf
\nglobal_defs {
\nrouter_id lb
\n}
\nvrrp_script chk_lb {
\nscript “\/server\/scripts\/chk_lb.sh”
\ninterval 2
\nweight 2
\n}
\ntrack_script {
\nchk_lb
\n}
\nvrrp_instance VI_1 {
\nstate BACKUP
\nnopreempt
\ninterface eth0
\nvirtual_router_id 50
\npriority 150
\nadvert_int 1
\nauthentication {
\nauth_type PASS
\nauth_pass 1111
\n}
\ntrack_script {
\nchk_lb
\n}
\nvirtual_ipaddress {
\n10.0.0.3\/24 dev eth0 label eth0:0
\n}
\n}<\/p>\n
vrrp_script chk_lb {\u00a0 \u00a0 #\u52a0\u8f7d\u9700\u8981\u76d1\u63a7\u811a\u672c\u4fe1\u606f \uff0c\u5199\u5728\u5168\u5c40\u914d\u7f6e\u5916\uff0c\u5b9a\u4e49vrrp\u811a\u672c\uff0c\u68c0\u6d4bHTTP\u7aef\u53e3
\nscript “\/server\/scripts\/chk_lb.sh”\u00a0 \u00a0 #\u52a0\u8f7d\u811a\u672c\u8def\u5f84\u4fe1\u606f \uff08\u811a\u672c\u9700\u8981\u6709\u6267\u884c\u6743\u9650\uff09interval 2\u00a0 \u00a0#\u52a0\u8f7d\u811a\u672c\u95f4\u9694\u65f6\u95f4\uff08\u6bcf\u96942s\uff09
\nweight 2\u00a0 \u00a0 #\u6743\u91cd\u503c\uff0c\u53ef\u4ee5\u89e3\u51b3\u76d1\u63a7\u670d\u52a1\u81ea\u52a8\u6062\u590d\u95ee\u9898
\n}
\ntrack_script {\u00a0 \u00a0 #\u8fdb\u884c\u89e6\u53d1\u6307\u5b9a\u811a\u672c\u4fe1\u606f \uff0c\u5199\u5728vrrp\u914d\u7f6e\u5185
\nchk_lb\u00a0 \u00a0#\u89e6\u53d1\u68c0\u67e5
\n}<\/p>\n
6.keepalived\u9ad8\u53ef\u7528\u6545\u969c\u8111\u88c2<\/h1>\n\u4f55\u4e3akeepalived\u8111\u88c2<\/h2>\n
Keepalived\u7684BACKUP\u4e3b\u673a\u5728\u6536\u5230\u4e0dMASTER\u4e3b\u673a\u62a5\u6587\u540e\u5c31\u4f1a\u5207\u6362\u6210\u4e3amaster\uff0c\u5982\u679c\u662f\u5b83\u4eec\u4e4b\u95f4\u7684\u901a\u4fe1\u7ebf\u8def\u51fa\u73b0\u95ee\u9898\uff0c\u65e0\u6cd5\u63a5\u6536\u5230\u5f7c\u6b64\u7684\u7ec4\u64ad\u901a\u77e5\uff0c\u4f46\u662f\u4e24\u4e2a\u8282\u70b9\u5b9e\u9645\u90fd\u5904\u4e8e\u6b63\u5e38\u5de5\u4f5c\u72b6\u6001\uff0c\u8fd9\u65f6\u4e24\u4e2a\u8282\u70b9\u5747\u4e3amaster\u5f3a\u884c\u7ed1\u5b9a\u865a\u62dfIP\uff0c\u5bfc\u81f4\u4e0d\u53ef\u9884\u6599\u7684\u540e\u679c\uff0c\u8fd9\u5c31\u662f\u8111\u88c2<\/p>\n
\u73af\u5883\u51c6\u5907<\/h2>\n\u6253\u5f00\u9632\u706b\u5899<\/h4>\n
![\"\"](\"https:\/\/i0.wp.com\/www.qiangzhenshuai.com\/wp-content\/uploads\/2023\/01\/\u6253\u5f00\u9632\u706b\u5899\u4e24\u8fb9\u540c\u65f6\u540c\u65f6\u67090.3\u7684IP.png?resize=640%2C53&ssl=1\")
<\/a><\/p>\n\u5bf9\u8111\u88c2\u7684\u76d1\u63a7\u62a5\u8b66\uff0c\u811a\u672c\u76d1\u6d4b<\/h4>\n
[root@lb ~]$ cat \/server\/scripts\/chk_break.sh
\n#\/bin\/bash<\/p>\n
vip=10.0.0.3
\nmaster_ip=10.0.0.163<\/p>\n
while true
\ndo<\/p>\n
vip_cnt=`ip a | grep -w $vip | wc -l `<\/p>\n
#\u4f7f\u7528ping\u68c0\u67e5\u6307\u5b9aIP\u662f\u5426\u53ef\u4ee5\u8bbf\u95ee
\nping -c1 -W1 $master_ip &>\/dev\/null<\/p>\n
if [ $? -eq 0 -a $vip_cnt -eq 1 ];then
\necho \u8111\u88c2
\nelse
\necho \u6b63\u5e38
\nfi
\nsleep 3
\ndone<\/p>\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
1.Keepalived\u9ad8\u53ef\u7528\u57fa\u672c\u6982\u8ff0 \u4ec0\u4e48\u662f\u9ad8\u53ef\u7528 \u4e00\u822c\u662f\u63072\u53f0\u673a\u5668\u542f\u52a8\u7740\u76f8\u540c\u7684\u4e1a\u52a1\u7cfb\u7edf,\u5f53\u6709\u4e00\u53f0\u673a\u5668dow […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spay_email":""},"categories":[19],"tags":[],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/www.qiangzhenshuai.com\/index.php?rest_route=\/wp\/v2\/posts\/1059"}],"collection":[{"href":"https:\/\/www.qiangzhenshuai.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.qiangzhenshuai.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.qiangzhenshuai.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.qiangzhenshuai.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1059"}],"version-history":[{"count":10,"href":"https:\/\/www.qiangzhenshuai.com\/index.php?rest_route=\/wp\/v2\/posts\/1059\/revisions"}],"predecessor-version":[{"id":1080,"href":"https:\/\/www.qiangzhenshuai.com\/index.php?rest_route=\/wp\/v2\/posts\/1059\/revisions\/1080"}],"wp:attachment":[{"href":"https:\/\/www.qiangzhenshuai.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1059"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.qiangzhenshuai.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1059"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.qiangzhenshuai.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1059"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
![\"\"](\"https:\/\/i0.wp.com\/www.qiangzhenshuai.com\/wp-content\/uploads\/2023\/01\/\u9ad8\u53ef\u7528VRR.png?resize=640%2C259&ssl=1\")
<\/a><\/p>\n