{"id":36947,"date":"2023-12-19T02:14:34","date_gmt":"2024-02-01T22:53:36","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e8%af%95%e8%af%95%e4%bd%bf%e7%94%a8apache-mod_heartbeat%e3%80%82\/"},"modified":"2024-05-04T14:14:20","modified_gmt":"2024-05-04T06:14:20","slug":"%e8%af%95%e8%af%95%e4%bd%bf%e7%94%a8apache-mod_heartbeat%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e8%af%95%e8%af%95%e4%bd%bf%e7%94%a8apache-mod_heartbeat%e3%80%82\/","title":{"rendered":"\u8bd5\u8bd5\u4f7f\u7528Apache mod_heartbeat"},"content":{"rendered":"

\u7531\u4e8e CentOS 7 \u7684 Apache 2.4 \u4e2d\u5b58\u5728\u7740\u4e00\u4e9b\u5947\u602a\u7684\u6a21\u5757\uff0c\u5982 mod_heartbeat \u548c mod_watchdog\uff0c\u56e0\u6b64\u51fa\u4e8e\u597d\u5947\u5fc3\uff0c\u6211\u5c1d\u8bd5\u4f7f\u7528\u4e86\u5b83\u4eec\u3002<\/p>\n

\u53ea\u662f\u4f7f\u7528\u8fc7\u800c\u5df2\uff0c\u6240\u4ee5\u6ca1\u6709\u8fdb\u884c\u8be6\u7ec6\u8c03\u67e5\u3002<\/p>\n

\u6458\u8981<\/h2>\n

\u4f7f\u7528Apache\u7684mod_proxy_balancer\u8fdb\u884c\u8d1f\u8f7d\u5747\u8861\u65f6\uff0c\u4f3c\u4e4e\u662f\u6839\u636e\u6765\u81ea\u771f\u5b9e\u670d\u52a1\u5668\u7684\u5fc3\u8df3\u6765\u51b3\u5b9a\u5e73\u8861\u7684\u76ee\u6807\u3002<\/p>\n

\u4f7f\u7528\u4ee5\u4e0b\u4e09\u4e2a\u6a21\u5757\u8fdb\u884c\u7ec4\u5408\u4f7f\u7528\u3002<\/p>\n

mod_watchdog<\/p>\n

\u4ed6\u306e\u30e2\u30b8\u30e5\u30fc\u30eb\u3067\u5b9a\u671f\u7684\u306a\u30bf\u30b9\u30af\u3092\u5b9f\u884c\u3059\u308b\u305f\u3081\u306e\u30e2\u30b8\u30e5\u30fc\u30eb<\/p>\n

mod_heartbeat \u3084 mod_heartmonitor \u3067\u5b9a\u671f\u7684\u306a\u30bf\u30b9\u30af\u3092\u5b9f\u884c\u3059\u308b\u305f\u3081\u306b\u5fc5\u8981
\n\u30ea\u30d0\u30fc\u30b9\u30d7\u30ed\u30ad\u30b7\u3068\u30ea\u30a2\u30eb\u30b5\u30fc\u30d0\u306e\u4e21\u65b9\u3067\u6709\u52b9\u306b\u3059\u308b
\n\u3044\u308f\u3086\u308b software watchdog \u306e\u3053\u3068\u3067\u306f\u306a\u3044
\n\u4e0b\u8a18\u306e\u30da\u30fc\u30b8\u304c\u8a73\u3057\u3044
\nmod_watchdog | \u3057\u3093\u3058\u3064\u306e\u306a\u307f\u3060<\/p>\n

mod_heartbeat<\/p>\n

\u30ea\u30a2\u30eb\u30b5\u30fc\u30d0\u304b\u3089\u30cf\u30fc\u30c8\u30d3\u30fc\u30c8\u3092\u9001\u4fe1\u3059\u308b\u305f\u3081\u306e\u30e2\u30b8\u30e5\u30fc\u30eb
\n\u30ea\u30a2\u30eb\u30b5\u30fc\u30d0\u3067\u6709\u52b9\u306b\u3059\u308b
\n\u30cf\u30fc\u30c8\u30d3\u30fc\u30c8\u306f\u30de\u30eb\u30c1\u30ad\u30e3\u30b9\u30c8\u3067\u9001\u4fe1\u3055\u308c\u308b
\n\u3044\u308f\u3086\u308b Linux-HA \u306e heartbeat \u3068\u306f\u95a2\u4fc2\u306a\u3044<\/p>\n

mod_heartmonitor<\/p>\n

\u30cf\u30fc\u30c8\u30d3\u30fc\u30c8\u3092\u53d7\u4fe1\u3057\u3066\u30d0\u30e9\u30f3\u30b9\u5148\u3092\u7ba1\u7406\u3059\u308b\u305f\u3081\u306e\u30e2\u30b8\u30e5\u30fc\u30eb
\n\u30ea\u30d0\u30fc\u30b9\u30d7\u30ed\u30ad\u30b7\u3067\u6709\u52b9\u306b\u3059\u308b<\/p>\n

\u6d41\u6d6a\u8005<\/h2>\n

\u6211\u5728Vagrant\u4e0a\u521b\u5efa\u73af\u5883\u3002<\/p>\n

Vagrant<\/span>.<\/span>configure<\/span>(<\/span>2<\/span>)<\/span> do<\/span> |<\/span>config<\/span>|<\/span>\r\n\r\n  config<\/span>.<\/span>vm<\/span>.<\/span>box<\/span> =<\/span> \"ngyuki\/centos-7\"<\/span>\r\n\r\n  config<\/span>.<\/span>vm<\/span>.<\/span>define<\/span> \"rev\"<\/span> do<\/span> |<\/span>cfg<\/span>|<\/span>\r\n    cfg<\/span>.<\/span>vm<\/span>.<\/span>hostname<\/span> =<\/span> \"rev\"<\/span>\r\n    cfg<\/span>.<\/span>vm<\/span>.<\/span>network<\/span> \"forwarded_port\"<\/span>,<\/span> guest: <\/span>80<\/span>,<\/span> host: <\/span>8080<\/span>\r\n    cfg<\/span>.<\/span>vm<\/span>.<\/span>network<\/span> \"private_network\"<\/span>,<\/span> ip: <\/span>\"192.168.33.10\"<\/span>,<\/span> virtualbox__intnet: <\/span>\"apache-hb\"<\/span>\r\n  end<\/span>\r\n\r\n  config<\/span>.<\/span>vm<\/span>.<\/span>define<\/span> \"sv1\"<\/span> do<\/span> |<\/span>cfg<\/span>|<\/span>\r\n    cfg<\/span>.<\/span>vm<\/span>.<\/span>hostname<\/span> =<\/span> \"sv1\"<\/span>\r\n    cfg<\/span>.<\/span>vm<\/span>.<\/span>network<\/span> \"forwarded_port\"<\/span>,<\/span> guest: <\/span>80<\/span>,<\/span> host: <\/span>8081<\/span>\r\n    cfg<\/span>.<\/span>vm<\/span>.<\/span>network<\/span> \"private_network\"<\/span>,<\/span> ip: <\/span>\"192.168.33.11\"<\/span>,<\/span> virtualbox__intnet: <\/span>\"apache-hb\"<\/span>\r\n  end<\/span>\r\n\r\n  config<\/span>.<\/span>vm<\/span>.<\/span>define<\/span> \"sv2\"<\/span> do<\/span> |<\/span>cfg<\/span>|<\/span>\r\n    cfg<\/span>.<\/span>vm<\/span>.<\/span>hostname<\/span> =<\/span> \"sv2\"<\/span>\r\n    cfg<\/span>.<\/span>vm<\/span>.<\/span>network<\/span> \"forwarded_port\"<\/span>,<\/span> guest: <\/span>80<\/span>,<\/span> host: <\/span>8082<\/span>\r\n    cfg<\/span>.<\/span>vm<\/span>.<\/span>network<\/span> \"private_network\"<\/span>,<\/span> ip: <\/span>\"192.168.33.12\"<\/span>,<\/span> virtualbox__intnet: <\/span>\"apache-hb\"<\/span>\r\n  end<\/span>\r\n\r\n  config<\/span>.<\/span>vm<\/span>.<\/span>provision<\/span> \"shell\"<\/span>,<\/span> inline: <\/span><<-<\/span>SHELL<\/span>\r\n    yum -y install httpd\r\n    uname -n > \/var\/www\/html\/index.html\r\n<\/span>  SHELL<\/span>\r\nend<\/span>\r\n<\/code><\/pre>\n
rev \u662f\u4e00\u79cd\u6240\u8c13\u7684\u53cd\u5411\u4ee3\u7406\u5f0f L7 \u8d1f\u8f7d\u5747\u8861\u5668\uff0csv1 \u548c sv2 \u662f\u771f\u5b9e\u670d\u52a1\u5668\u3002<\/p>\n
\u6211\u6b63\u5728\u4f7f\u7528\u7684 Box \u662f\u79c1\u4eba Box\uff0c\u6240\u4ee5\u9664\u4e86\u6211\u4ee5\u5916\u4e0d\u80fd\u4f7f\u7528\u3002\u6211\u53ea\u662f\u6dfb\u52a0\u4e86 epel-release \u548c git\uff0c\u6240\u4ee5\u4e0e\u666e\u901a\u7684 CentOS 7 \u6ca1\u6709\u7279\u522b\u7684\u533a\u522b\u3002<\/p>\n
\u90a3\u4e48\u73b0\u5728\u5f00\u59cb\u542f\u52a8\u5427\u3002<\/p>\n
vagrant up\r\n<\/code><\/pre>\n
\u4e0d\u4f7f\u7528mod_heartbeat\u8fdb\u884c\u5206\u5e03\u5f0f<\/h2>\n
\u5f00\u59cb\u542f\u52a8\u5b9e\u9645\u670d\u52a1\u5668\uff08sv1\/sv2\uff09\u4e0a\u7684Apache\u3002<\/p>\n
systemctl start httpd.service\r\n<\/code><\/pre>\n
\u5728\u53cd\u5411\u4ee3\u7406\u670d\u52a1\u5668(rev)\u4e0a\u8fdb\u884c\u5982\u4e0b\u914d\u7f6e\u3002<\/p>\n
cat<\/span> <<<\/span>'<\/span>EOS<\/span>'> \/etc\/httpd\/conf.d\/rev.conf\r\n<VirtualHost *:80>\r\n    ServerName localhost\r\n    <Location \/>\r\n        ProxyPass balancer:\/\/app\/\r\n        ProxyPassReverse balancer:\/\/app\/\r\n    <\/Location>\r\n    <Location \/balancer-manager>\r\n        ProxyPass !\r\n        SetHandler balancer-manager\r\n    <\/Location>\r\n    <Proxy balancer:\/\/app\/>\r\n        BalancerMember http:\/\/192.168.33.11\r\n        BalancerMember http:\/\/192.168.33.12\r\n    <\/Proxy>\r\n<\/VirtualHost>\r\n<\/span>EOS\r\n<\/span><\/code><\/pre>\n
\u5f00\u59cb Apache\u3002<\/p>\n
systemctl start httpd.service\r\n<\/code><\/pre>\n
\u5f53\u901a\u8fc7\u53cd\u5411\u4ee3\u7406(rev)\u8bbf\u95ee\u6b64\u72b6\u6001\u65f6\uff0c\u53ef\u4ee5\u770b\u5230\u5df2\u5206\u6563\u5230sv1\u548csv2\u4e0a\u3002<\/p>\n
\u6211\u5f3a\u5236\u7ec8\u6b62Vagrant\u4e3b\u673a\u4e0a\u7684sv2\u3002<\/p>\n
vagrant halt -f sv2\r\n<\/code><\/pre>\n
\u5f53\u6211\u518d\u6b21\u6253\u5f00rev\u65f6\uff0c\u5728\u7b2c\u4e00\u6216\u7b2c\u4e8c\u6b21\u5c1d\u8bd5\u65f6\uff0c\u6211\u8ba4\u4e3a\u4f1a\u88ab\u8d85\u957f\u65f6\u95f4\u7b49\u5f85\u3002<\/p>\n
\u8fd9\u662f\u56e0\u4e3a\u53cd\u5411\u4ee3\u7406\u6b63\u5728\u5411sv2\u53d1\u9001\u8bf7\u6c42\u5e76\u7b49\u5f85\u8d85\u65f6\u3002<\/p>\n
\u4e00\u65e6\u8d85\u65f6\u53d1\u751f\u540e\uff0c\u4e4b\u540e\u7684\u4e00\u6bb5\u65f6\u95f4\u5185\uff0c\u8bf7\u6c42\u53ea\u4f1a\u88ab\u5206\u914d\u7ed9 sv1\uff0c\u4f46\u6bcf60\u79d2\u4f1a\u5411 sv2 \u8bf7\u6c42\u4e00\u6b21\uff0c\u56e0\u6b64\u4f1a\u518d\u6b21\u7b49\u5f85\u8d85\u65f6\u65f6\u95f4\u3002\u8fd9\u662f\u4e3a\u4e86\u786e\u8ba4 sv2 \u662f\u5426\u6062\u590d\u6b63\u5e38\u3002<\/p>\n
\u91cd\u65b0\u542f\u52a8sv2\u3002<\/p>\n
vagrant up sv2\r\nvagrant ssh sv2\r\n<\/code><\/pre>\n
\u542f\u52a8 sv2 \u7684 Apache\u3002<\/p>\n
systemctl start httpd.service\r\n<\/code><\/pre>\n
\u5927\u7ea660\u79d2\u4e4b\u540e\uff0c\u5b83\u5c06\u91cd\u65b0\u5e73\u8861\u5230sv2\u4e0a\u3002<\/p>\n
\u4f7f\u7528mod_heartbeat\u6765\u5b9e\u73b0\u8d1f\u8f7d\u5747\u8861\u3002<\/h2>\n
\u5728\u6240\u6709\u670d\u52a1\u5668(rev\/sv1\/sv2)\u4e0a\uff0c\u6309\u7167\u5982\u4e0b\u65b9\u5f0f\u8fdb\u884c\u8def\u7531\u8bbe\u7f6e\u3002<\/p>\n
ip route add 239.0.0.0\/24 dev enp0s8 proto kernel scope link<\/span>\r\n<\/code><\/pre>\n
mod_heartbeat\u901a\u8fc7\u591a\u64ad\u65b9\u5f0f\u53d1\u9001\u5fc3\u8df3\u4fe1\u606f\uff0c\u4f46\u662f\u5728\u76ee\u6807\u5730\u5740\u7684\u8bbe\u7f6e\u4e2d\u4f3c\u4e4e\u65e0\u6cd5\u6307\u5b9aI\/F\uff0c\u56e0\u6b64\u9700\u8981\u5728\u8def\u7531\u4e2d\u6307\u5b9a\u4ece\u54ea\u4e2aI\/F\u51fa\u53bb\uff08\u901a\u5e38\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\u4e5f\u9700\u8981\u6307\u5b9aI\/F\uff09\u3002<\/p>\n
\u5982\u679c\u53ea\u6709\u4e00\u4e2a\u63a5\u53e3\uff0c\u5219\u65e0\u9700\u6307\u5b9a\uff0c\u4f46\u7531\u4e8eVagrant\uff0c\u5b58\u5728NAT\u548cPrivateNetwork\u4e24\u4e2a\u63a5\u53e3\u3002\u7531\u4e8e\u65e0\u6cd5\u5728NAT\u7f51\u7edc\u4e2d\u8fdb\u884c\u5bbf\u4e3b\u673a\u548c\u865a\u62df\u673a\u4e4b\u95f4\u7684\u901a\u4fe1\uff0c\u56e0\u6b64\u6211\u4eec\u9700\u8981\u8bbe\u7f6e\u8def\u7531\uff0c\u4f7f\u5176\u901a\u8fc7PrivateNetwork\u7f51\u7edc\u8fdb\u884c\u901a\u4fe1\u3002<\/p>\n
\u8bbe\u7f6e\u5b9e\u9645\u670d\u52a1\u5668(sv1\/sv2)\u7684\u914d\u7f6e\u3002<\/h3>\n
\u5728\u5b9e\u9645\u670d\u52a1\u5668\uff08sv1\/sv2\uff09\u4e0a\u542f\u7528 mod_watchdog \u548c mod_heartbeat\u3002<\/p>\n
vim \/etc\/httpd\/conf.modules.d\/00-base.conf\r\n<\/code><\/pre>\n
\u89e3\u9664\u6ce8\u91ca\u5982\u4e0b\u3002<\/p>\n
 #LoadModule buffer_module modules\/mod_buffer.so\r\n-#LoadModule watchdog_module modules\/mod_watchdog.so\r\n<\/span>+LoadModule watchdog_module modules\/mod_watchdog.so\r\n<\/span>-#LoadModule heartbeat_module modules\/mod_heartbeat.so\r\n<\/span>+LoadModule heartbeat_module modules\/mod_heartbeat.so\r\n<\/span> #LoadModule heartmonitor_module modules\/mod_heartmonitor.so\r\n #LoadModule usertrack_module modules\/mod_usertrack.so\r\n<\/code><\/pre>\n
\u6307\u5b9a\u5fc3\u8df3\u591a\u64ad\u5730\u5740\uff08\u867d\u7136\u4e5f\u8bb8\u5728\u8fd9\u91cc\u6307\u5b9a\u63a5\u53e3\u540d\u53ef\u80fd\u4f1a\u66f4\u597d\uff09\u3002<\/p>\n
cat<\/span> <<<\/span>EOS<\/span>> \/etc\/httpd\/conf.d\/heartbeat.conf\r\nHeartbeatAddress 239.0.0.1:27999\r\n<\/span>EOS\r\n<\/span><\/code><\/pre>\n
\u91cd\u65b0\u542f\u52a8Apache\u3002<\/p>\n
systemctl restart httpd.service\r\n<\/code><\/pre>\n
\u4f7f\u7528tcpdump\u5c06\u53ef\u4ee5\u53d1\u73b0\u6d41\u52a8\u7684\u591a\u64ad\u6570\u636e\u5305\u3002<\/p>\n
tcpdump -nn<\/span> -i<\/span> enp0s8 port 27999\r\n<\/code><\/pre>\n
\u53cd\u5411\u4ee3\u7406\u670d\u52a1\u5668(rev)\u7684\u914d\u7f6e<\/h3>\n
\u4f7f\u7528\u53cd\u5411\u4ee3\u7406(rev)\u542f\u7528 mod_watchdog \u548c mod_heartmonitor\u3002<\/p>\n
vim \/etc\/httpd\/conf.modules.d\/00-base.conf\r\n<\/code><\/pre>\n
\u4ee5\u4e0b\u662f\u5982\u4f55\u89e3\u9664\u6ce8\u91ca\u7684\u6b65\u9aa4\u3002<\/p>\n
 #LoadModule buffer_module modules\/mod_buffer.so\r\n-#LoadModule watchdog_module modules\/mod_watchdog.so\r\n<\/span>+LoadModule watchdog_module modules\/mod_watchdog.so\r\n<\/span> #LoadModule heartbeat_module modules\/mod_heartbeat.so\r\n-#LoadModule heartmonitor_module modules\/mod_heartmonitor.so\r\n<\/span>+LoadModule heartmonitor_module modules\/mod_heartmonitor.so\r\n<\/span> #LoadModule usertrack_module modules\/mod_usertrack.so\r\n<\/code><\/pre>\n
\u8bbe\u7f6e\u63a5\u6536\u7ec4\u64ad\u7684\u914d\u7f6e\u5e76\u8bbe\u7f6e\u4fdd\u5b58\u72b6\u6001\u7684\u6587\u4ef6\u540d\u3002<\/p>\n
cat<\/span> <<<\/span>EOS<\/span>> \/etc\/httpd\/conf.d\/heartbeat.conf\r\nHeartbeatListen 239.0.0.1:27999\r\nHeartbeatStorage \/tmp\/hb.dat\r\n<\/span>EOS\r\n<\/span><\/code><\/pre>\n
\u5728\u4ee3\u7406\u670d\u52a1\u5668\u7684\u8bbe\u7f6e\u4e2d\u6dfb\u52a0 lbmethod=heartbeat\u3002<\/p>\n
cat<\/span> <<<\/span>'<\/span>EOS<\/span>'> \/etc\/httpd\/conf.d\/rev.conf\r\n<VirtualHost *:80>\r\n    ServerName localhost\r\n    <Location \/>\r\n        ProxyPass balancer:\/\/app\/ lbmethod=heartbeat\r\n        ProxyPassReverse balancer:\/\/app\/\r\n    <\/Location>\r\n    <Location \/balancer-manager>\r\n        ProxyPass !\r\n        SetHandler balancer-manager\r\n    <\/Location>\r\n    <Proxy balancer:\/\/app\/>\r\n        BalancerMember http:\/\/192.168.33.11\r\n        BalancerMember http:\/\/192.168.33.12\r\n    <\/Proxy>\r\n<\/VirtualHost>\r\n<\/span>EOS\r\n<\/span><\/code><\/pre>\n
\u6211\u8981\u91cd\u65b0\u542f\u52a8Apache\u3002<\/p>\n
systemctl restart httpd.service\r\n<\/code><\/pre>\n
\u8bf7\u68c0\u67e5\u8bbf\u95ee\u53cd\u5411\u4ee3\u7406\u670d\u52a1\u5668\uff08rev\uff09\u4ee5\u786e\u8ba4\u662f\u5426\u5df2\u5c06\u8d1f\u8f7d\u5206\u6563\u5230 sv1 \u548c sv2\u3002<\/p>\n
\u4e00\u65e6\u786e\u8ba4\u5b8c\u6210\uff0c\u4fbf\u7acb\u5373\u505c\u6b62sv2\u3002<\/p>\n
vagrant halt -f<\/span> sv2\r\n<\/code><\/pre>\n
\u7a0d\u7b49\u7247\u523b\u540e\uff0c\u91cd\u65b0\u6253\u5f00\u53cd\u5411\u4ee3\u7406\uff0c\u5c31\u4e0d\u4f1a\u518d\u50cf\u4e4b\u524d\u4e00\u6837\u88ab\u8feb\u7b49\u5f85\u8d85\u65f6\u4e86\u3002<\/p>\n
\u56e0\u4e3a\u4ecesv2\u7684\u5fc3\u8df3\u4e2d\u65ad\u4e86\uff0c\u6240\u4ee5\u88ab\u4ece\u5e73\u8861\u5668\u5904\u79fb\u9664\u4e86\uff08\u5927\u6982\uff09\u3002<\/p>\n
\u8bf7\u91cd\u65b0\u542f\u52a8sv2\u4e00\u6b21\u3002<\/p>\n
vagrant up sv2\r\nvagrant ssh sv2\r\n<\/code><\/pre>\n
\u8bbe\u7f6e\u8def\u7531\u5e76\u542f\u52a8 Apache\uff08\u7406\u5e94\u5c06\u5176\u81ea\u52a8\u8bbe\u7f6e\uff09\u3002<\/p>\n
ip route add 239.0.0.0\/24 dev enp0s8 proto kernel scope link\r\n<\/span>systemctl start httpd.service\r\n<\/code><\/pre>\n
\u5927\u7ea610\u79d2\u949f\uff0c\u6211\u4e5f\u80fd\u591f\u5728sv2\u4e0a\u5b9e\u73b0\u5e73\u8861\u3002<\/p>\n
\u6700\u540e<\/h2>\n
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