基于LNMP HAproxy Keepalived搭建高可用小型站点

建站服务器
```* 基于lnmp haproxy keepalived搭建高可用小型站点前端服务器 192.168.55.7vip 192.168.55.100 haproxy keepalived192.168.55.10vip 192.168.55.100 haproxy keepalived后端服务器 192.168.55.5 php-7.1.30.tar.gznginx-1.14.2.tar.gz192.168.55.6 php-7.1.30.tar.gznginx-1.14.2.tar.gzmysql 192.168.55.8 mysql nfs前端服务器192.168.55.7 和 192.168.55.10 1、yum 安装keepalived （可编译安装）yum install keepalived -y2、编辑配置文件vim /etc/keepalived/keepalived.conf--------------------------------------------------------------------------------! configuration file for keepalivedglobal_defs { notification_email { acassen@firewall.loc failover@firewall.loc sysadmin@firewall.loc } notification_email_from localhost.localdomain smtp_server 172.22.0.1 smtp_connect_timeout 30 router_id localhost.localdomain1 vrrp_skip_check_adv_addr #vrrp_strict vrrp_iptables vrrp_garp_interval 0 vrrp_gna_interval 0}vrrp_script chk_haproxy { script /etc/keepalived/chk_haproxy.sh interval 2 weight -50 fall 3 rise 5 timeout 2}vrrp_instance vip1 { state backup #从配置换成这个master interface ens37 virtual_router_id 36 priority 100 advert_int 2 nopreempt unicast_src_ip 192.168.55.7 unicast_peer { 192.168.55.10} authentication { auth_type pass auth_pass linux36 } virtual_ipaddress { 172.20.200.200 dev ens37 label ens37:1 172.20.200.201 dev ens37 label ens37:2 } notify_master /etc/keepalived/ping.sh}--------------------------------------------------------------------------------配置中的脚本cat /etc/keepalived/chk_haproxy.sh #!/bin/bashif ! killall -0 haproxy &>/dev/null;then systemctl restart haproxy sleep 1 if ! killall -0 haproxy &>/dev/null;then systemctl stop keepalived fifi--------------------------------------------------------------------------------cat /etc/keepalived/ping.sh #!/bin/bashping -c 2 172.22.0.1 &> /dev/nullif [ $? -eq 0 ];then exit 0else exit 2fi--------------------------------------------------------------------------------注：这俩个脚本起检测作用编译安装haproxyyum install gcc gcc-c glibc glibc-devel pcre pcre-devel openssl openssl-devel systemd-devel net-tools vim iotop bc zip unzip zlib-devel lrzsz tree screen lsof tcpdump wget ntpdate -y解压安装包cd /usr/local/src/tar xvf haproxy-1.8.20.tar.gz 编译安装进入目录cd haproxy-1.8.20开始编译make arch=x86_64 target=linux2628 use_pcre=1 use_openssl=1 use_zlib=1 use_systemd=1 use_cpu_affinity=1 prefix=/usr/local/haproxy生成目录make install prefix=/usr/local/haproxy查看版本./haproxy -h拷贝主文件cp /usr/local/src/haproxy-1.8.20/haproxy /usr/sbin/创建启动脚本：--------------------------------------------------------------------------------vim /usr/lib/systemd/system/haproxy.service[unit]description=haproxy load balancerafter=syslog.target network.target[service]execstartpre=/usr/sbin/haproxy -f /etc/haproxy/haproxy.cfg -c -qexecstart=/usr/sbin/haproxy -ws -f /etc/haproxy/haproxy.cfg -p /run/haproxy.pidexecreload=/bin/kill -usr2 $mainpid[install]wantedby=multi-user.target--------------------------------------------------------------------------------创建目录和用户：mkdir /etc/haproxymkdir /var/lib/haproxyuseradd haproxy -s /sbin/nologinchown haproxy.haproxy /var/lib/haproxy/ -r--------------------------------------------------------------------------------vim /etc/haproxy/haproxy.cfg--------------------------------------------------------------------------------globalmaxconn 65536chroot /usr/local/haproxystats socket /var/lib/haproxy/haproxy.sock mode 600 level adminuid 1001gid 1001daemonnbthread 2nbproc 2cpu-map 1 0cpu-map 2 1#cpu-map 3 2#cpu-map 4 3spread-checks 5pidfile /run/haproxy.pidlog 127.0.0.1 local3 infodefaultsoption http-keep-aliveoption forwardforoption redispatchoption abortonclosemaxconn 100000mode httptimeout connect 300000mstimeout client 300000mstimeout server 300000mslisten stats bind :9999 stats enable# stats hid-version stats uri /haproxy-status stats realm haporxy\\\\ stats\\\\ page stats aut

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