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| 关键词： nbsp haproxy sphinx check status server localhost proxy node Unavailable |
使用haproxy来实现sphinx负载均衡与健康监测 环境如下： 【node1】 Sphinx:192.168.1.189 【node2】 Sphinx:192.168.1.101 【node3】 Haproxy:192.168.1.103 【node3】上配置： # apt-get install make gcc g++ automake libtool 1.安装 # wget http://haproxy.1wt.eu/download/1.4/src/haproxy-1.4.18.tar.gz # tar zxvf haproxy-1.4.18.tar.gz -C /software/ # cd haproxy-1.4.18 # make TARGET=linux26 PREFIX=/usr/local/haproxy-1.4.18 # make install PREFIX=/usr/local/haproxy-1.4.18 配置 # cd /usr/local/haproxy-1.4.18 # vim haproxy.cfg global log 127.0.0.1 local0 info //日志[err warning info debug] maxconn 4096 //单个进程的最大连接数 pidfile /usr/local/haproxy-1.4.18/log/haproxy.pid user haproxy group haproxy daemon //守护进程运行 nbproc 4 //作为守护进程运行时，创建多少个进程 defaults log global mode http option dontlognull //不记录空连接 option log-health-checks //记录健康检测日志 retries 3 //连接失败后的重连次数 option redispatch //在连接失败或断开情况下，允许当前会话被重新分发 maxconn 2000 //最大连接数 timeout connect 5000ms timeout client 30000ms timeout server 30000ms listen haproxy-status 0.0.0.0:8888 mode http option httplog stats uri /hasphinx //统计页面url stats realm Global\ statistics stats auth hasphinx:hasphinx //登录用户和密码 listen proxy-sphinx-1 0.0.0.0:3312 mode tcp balance roundrobin //服务器分配算法 option tcpka option httpchk server node1 192.168.1.189:3312 weight 1 check port 9312 inter 1s rise 2 fall 2 server node2 192.168.1.101:3312 weight 1 check port 9312 inter 1s rise 2 fall 2 //后台服务器 #weight 服务器权重 #check port 检测端口 #inter 设置连续的两次健康检测间的时间 #rise 指定多少次连接成功的健康检测后，可认定该服务器可用 #fall 指定多少次失败的健康检测后，可认定该服务器当掉 配置日志 # vim /etc/rsyslog.d/haproxy.conf $ModLoad imudp $UDPServerRun 514 local0.* /var/log/haproxy.log 重启日志服务 # restart rsyslog 【node1/node2】上配置： 1.健康检测 # apt-get install xinetd # vim /etc/inetd.conf sphinxchk stream tcp wait root /usr/local/scripts/sphinxchk.sh 注释： a.服务名称：inetd通过查询/etc/services获得该服务相关信息 b.套接字类型：该服务使用的通信协议tcp用stream，udp用dgram c.Inetd是否等待守护进程结束才继续接管端口。Wait表示等待，nowait表示不等待，inetd每次接到一个请求就启动守护进程的新副本 d.运行该守护进程的用户 e.守护进程二进制文件的路径以及参数 # vim /etc/xinetd.d/sphinxchk service sphinxchk { flags = REUSE socket_type = stream port = 9312 wait = no user = root server = /usr/local/scripts/sphinxchk.sh log_on_failure += USERID disable = no only_from = 192.168.1.0/24 } sphinx配置省略 测试： 将sphinx源码api目录下的sphinxapi.py test.py拷贝到测试服务器上。 # vim sphinx-test.sh #!/bin/bash i=0 while [ "$i" -lt "99999" ] do /usr/bin/python /root/test.py -a $* let i=$i+1 done # ./sphinx-test.sh php aaa bbb ccc dddd Kill掉node1上的sphinx服务 Oct 13 01:59:59 localhost haproxy[12117] Health check for server proxy-sphinx-1/node1 failed, reason: Layer7 wrong status, code: 503, info: "Service Unavailable", check duration: 32ms, status: 1/2 UP. Oct 13 01:59:59 localhost haproxy[12119] Health check for server proxy-sphinx-1/node1 failed, reason: Layer7 wrong status, code: 503, info: "Service Unavailable", check duration: 31ms, status: 1/2 UP. Oct 13 01:59:59 localhost haproxy[12118] Health check for server proxy-sphinx-1/node1 failed, reason: Layer7 wrong status, code: 503, info: "Service Unavailable", check duration: 31ms, status: 1/2 UP. Oct 13 01:59:59 localhost haproxy[12120] Health check for server proxy-sphinx-1/node1 failed, reason: Layer7 wrong status, code: 503, info: "Service Unavailable", check duration: 31ms, status: 1/2 UP. Oct 13 02:00:00 localhost haproxy[12117] Health check for server proxy-sphinx-1/node1 failed, reason: Layer7 wrong status, code: 503, info: "Service Unavailable", check duration: 35ms, status: 0/2 DOWN. Oct 13 02:00:00 localhost haproxy[12117] Server proxy-sphinx-1/node1 is DOWN. 1 active and 0 backup servers left. 0 sessions active, 0 requeued, 0 remaining in queue. Oct 13 02:00:00 localhost haproxy[12119] Health check for server proxy-sphinx-1/node1 failed, reason: Layer7 wrong status, code: 503, info: "Service Unavailable", check duration: 32ms, status: 0/2 DOWN. Oct 13 02:00:00 localhost haproxy[12119] Server proxy-sphinx-1/node1 is DOWN. 1 active and 0 backup servers left. 0 sessions active, 0 requeued, 0 remaining in queue. Oct 13 02:00:00 localhost haproxy[12118] Health check for server proxy-sphinx-1/node1 failed, reason: Layer7 wrong status, code: 503, info: "Service Unavailable", check duration: 30ms, status: 0/2 DOWN. Oct 13 02:00:00 localhost haproxy[12118] Server proxy-sphinx-1/node1 is DOWN. 1 active and 0 backup servers left. 0 sessions active, 0 requeued, 0 remaining in queue. Oct 13 02:00:00 localhost haproxy[12120] Health check for server proxy-sphinx-1/node1 failed, reason: Layer7 wrong status, code: 503, info: "Service Unavailable", check duration: 32ms, status: 0/2 DOWN. Oct 13 02:00:00 localhost haproxy[12120] Server proxy-sphinx-1/node1 is DOWN. 1 active and 0 backup servers left. 0 sessions active, 0 requeued, 0 remaining in queue. 请求将会发送到node2上面。（将sphinx的查询日志打开进行观察） |
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