Nginx反向代理
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安装keepalived和nginx
安装keepalived
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# yum -y install keepalived |
创建nginx用户组及nginx用户
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# groupadd -r nginx # useradd -g nginx -r nginx |
编译安装nginx-1.4.7
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# tar xf nginx-1.4.7.tar.gz # cd nginx-1.4.7 # ./configure --prefix= /usr
--sbin-path= /usr/sbin/nginx
--conf-path= /etc/nginx/nginx .conf --error-log-path= /var/log/nginx/error .log --http-log-path= /var/log/nginx/access .log --pid-path= /var/run/nginx/nginx .pid --lock-path= /var/lock/nginx .lock --user=nginx --group=nginx --with-http_ssl_module --with-http_flv_module --with-http_stub_status_module --with-http_gzip_static_module --http-client-body-temp-path= /usr/local/nginx/client/
--http-proxy-temp-path= /usr/local/nginx/proxy/
--http-fastcgi-temp-path= /usr/local/nginx/fcgi/
--http-uwsgi-temp-path= /usr/local/nginx/uwsgi
--http-scgi-temp-path= /usr/local/nginx/scgi
--with-pcre # make && make install |
检查配置文件是否有语法错误
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[[email protected] nginx-1.4.7] # nginx -t nginx: the configuration file /etc/nginx/nginx .conf syntax is ok nginx: [emerg] mkdir () "/usr/local/nginx/client/" failed (2: No such file or directory) nginx: configuration file /etc/nginx/nginx .conf test failed |
修改错误
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# mkdir /usr/local/nginx |
再次检查配置文件是否有语法错误
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[[email protected] nginx-1.4.7] # nginx -t |
为nginx提供SysV init脚本
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# vim /etc/rc.d/init.d/nginx |
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#!/bin/sh # # nginx - this script starts and stops the nginx daemon # # chkconfig: - 85 15 # description: Nginx is an HTTP(S) server, HTTP(S) reverse # proxy and IMAP/POP3 proxy server # processname: nginx # config: /etc/nginx/nginx.conf # config: /etc/sysconfig/nginx # pidfile: /var/run/nginx.pid # Source function library. . /etc/rc .d /init .d /functions # Source networking configuration. . /etc/sysconfig/network # Check that networking is up. [ "$NETWORKING" = "no" ] && exit 0 nginx= "/usr/sbin/nginx" prog=$( basename $nginx) NGINX_CONF_FILE= "/etc/nginx/nginx.conf" [ -f /etc/sysconfig/nginx ] && . /etc/sysconfig/nginx lockfile= /var/lock/subsys/nginx make_dirs() { # make required directories user=`nginx -V 2>&1 | grep "configure arguments:" | sed ‘s/[^*]*--user=([^ ]*).*/1/g‘ -` options=`$nginx -V 2>&1 | grep ‘configure arguments:‘ ` for opt in $options; do if [ ` echo $opt | grep ‘.*-temp-path‘ ` ]; then value=` echo $opt | cut -d "=" -f 2` if [ ! -d "$value" ]; then # echo "creating" $value mkdir -p $value && chown -R $user $value fi fi done } start() { [ -x $nginx ] || exit 5 [ -f $NGINX_CONF_FILE ] || exit 6 make_dirs echo -n $ "Starting $prog: " daemon $nginx -c $NGINX_CONF_FILE retval=$? echo [ $retval - eq 0 ] && touch $lockfile return $retval } stop() { echo -n $ "Stopping $prog: " killproc $prog -QUIT retval=$? echo [ $retval - eq 0 ] && rm -f $lockfile return $retval } restart() { configtest || return $? stop sleep 1 start } reload() { configtest || return $? echo -n $ "Reloading $prog: " killproc $nginx -HUP RETVAL=$? echo } force_reload() { restart } configtest() { $nginx -t -c $NGINX_CONF_FILE } rh_status() { status $prog } rh_status_q() { rh_status > /dev/null 2>&1 } case "$1" in start) rh_status_q && exit 0 $1 ;; stop) rh_status_q || exit 0 $1 ;; restart|configtest) $1 ;; reload) rh_status_q || exit 7 $1 ;; force-reload) force_reload ;; status) rh_status ;; condrestart|try-restart) rh_status_q || exit 0 ;; *) echo $ "Usage: $0 {start|stop|status|restart|condrestart|try-restart|reload|force-reload|configtest}" exit 2 esac |
赋予nginx脚本执行权限
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# chmod +x /etc/rc.d/init.d/nginx |
添加至服务管理列表,并让其开机自动启动
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# chkconfig --add nginx # chkconfig nginx on |
提示:在两个keepalived+nginx主机上都需安装keepalkved和nginx服务
配置nginx为反向代理服务器
编辑nginx.conf配置文件
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# cd /etc/nginx/ # vim nginx.conf |
在nginx.conf配置文件中的http段内添加如下内容
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upstream webservers { server 10.170.2.101; server 10.170.2.102; } server { listen 80; server_name www.muluhe.com; location / { proxy_pass http: //webservers ; proxy_set_header X-Real-IP $remote_addr; } } |
提示:在两台keepalived+nginx主机的nginx.conf的配置文件所添加的内容一样
配置keepalived
编辑keepalived.conf配置文件
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# cd /etc/keepalived/ # vim keepalived.conf |
IP地址为10.170.2.60的配置文件内容为:
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! Configuration File for keepalived global_defs { notification_email { } notification_email_from [email protected] smtp_server 192.168.200.1 smtp_connect_timeout 30 router_id LVS_DEVEL } vrrp_instance VI_1 { state MASTER interface eth0 virtual_router_id 15 priority 100 advert_int 1 authentication { auth_type PASS auth_pass 111111 } virtual_ipaddress { 10.170.2.100 } notify_master "/etc/init.d/nginx start" notify_backup "/etc/init.d/nginx stop" notify_fault "/etc/init.d/nginx stop" } |
IP地址为10.170.2.61的配置文件内容为
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! Configuration File for keepalived global_defs { notification_email { } notification_email_from [email protected] smtp_server 192.168.200.1 smtp_connect_timeout 30 router_id LVS_DEVEL } vrrp_instance VI_1 { state BACKUP interface eth0 virtual_router_id 15 priority 99 advert_int 1 authentication { auth_type PASS auth_pass 111111 } virtual_ipaddress { 10.170.2.100 } notify_master "/etc/init.d/nginx start" notify_backup "/etc/init.d/nginx stop" notify_fault "/etc/init.d/nginx stop" } |
配置web1和web2服务器
编辑web1测试页面
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# vim /var/www/html/index.html 内容为:<h1>www1.muluhe.com< /h1 > |
启动httpd服务
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# /etc/init.d/httpd start |
编辑web2测试页面
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# vim /var/www/html/index.html 内容为:<h1>www2.muluhe.com< /h1 > |
启动httpd服务
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# /etc/init.d/httpd start |
启动keepalived服务并进行测试
启动keepalived+nginx两台主机的keepalived服务
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# /etc/init.d/keepalived start |
在浏览器中键入10.170.2.100,刷新几下,可得到如下结果
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