nginx+lvs+keepalived安装

Posted 2020-12-30

1. 安装nginx

配置文件和之前的一样

user nobody nobody;    #定义Nginx运行的用户和用户组 worker_processes 4;    #nginx进程数，建议设置为等于CPU总核心数。 error_log logs/error.log    info;    #全局错误日志定义类型，[ debug | info | notice | warn | error | crit ] worker_rlimit_nofile 1024;    #一个nginx进程打开的最多文件描述符数目，所以建议与ulimit -n的值保持一致。 pid    logs/nginx.pid;    #进程文件   #工作模式及连接数上限 events {         use epoll;#参考事件模型，use [ kqueue | rtsig | epoll | /dev/poll | select | poll ]; epoll模型是Linux 2.6以上版本内核中的高性能网络I/O模型      worker_connections 1024;#单个进程最大连接数（最大连接数=连接数*进程数） }   #设定http服务器，利用它的反向代理功能提供负载均衡支持 http { include mime.types;#文件扩展名与文件类型映射表 default_type application/octet-stream;#默认文件类型 #设定负载均衡的服务器列表 upstream tomcatxxxcom { server 192.168.56.200:8080; server 192.168.56.201:8080;      } #设定日志格式 log_format www_xy_com ‘$remote_addr - $remote_user [$time_local] "$request" ‘ ‘$status $body_bytes_sent "$http_referer" ‘ ‘"$http_user_agent" "$http_x_forwarded_for"‘;                      sendfile on;#开启高效文件传输模式，sendfile指令指定nginx是否调用sendfile函数来输出文件，对于普通应用设为 on，如果用来进行下载等应用磁盘IO重负载应用，可设置为off，以平衡磁盘与网络I/O处理速度，降低系统的负载。注意：如果图片显示不正常把这个改成off。 keepalive_timeout 65; #长连接超时时间，单位是秒   #gzip on; #设定虚拟主机，默认为监听80端口 server { listen 80; server_name tomcat.xxx.com;#域名可以有多个，用空格隔开   #charset koi8-r; #设定本虚拟主机的访问日志 access_log /data/logs/access.log www_xy_com; #对 "/" 启用反向代理      location / {              proxy_pass http://tomcatxxxcom; proxy_set_header Host $host; proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; }   #error_page 500 502 503 504 /50x.html; location = /50x.html { root html; } } }

1. 安装lvs

lvs-dr.sh:和之前对比，变化之处就是vip和转发的端口。

#!/bin/bash #description:start lvs server echo "1" >/proc/sys/net/ipv4/ip_forward   WEB1=192.168.56.200 WEB2=192.168.56.201   VIP1=192.168.56.90   /etc/rc.d/init.d/functions   case "$1" in start) echo "start LVS of directorServer" #set the Virtual address and sysctl parameter /sbin/ifconfig eth1:0 $VIP1 broadcast $VIP1 netmask 255.255.255.255 up #clear ipvs table /sbin/ipvsadm -C   #set LVS #web apache or tomcat /sbin/ipvsadm -A -t $VIP1:80 -s rr /sbin/ipvsadm -a -t $VIP1:80 -r $WEB1:80 -g /sbin/ipvsadm -a -t $VIP1:80 -r $WEB2:80 -g   #run LVS /sbin/ipvsadm   ;;   stop) echo "close LVS directorserver" echo "0" >/proc/sys/net/ipv4/ip_forward   /sbin/ipvsadm -C   /sbin/ipvsadm -Z   ;; *) echo "usage:$0 {start|stop}" exit 1 esac

lvs-rs.sh：与之前的不同在于修改了vip

#!/bin/sh #description start realserver #chkconfig 235 26 26 VIP1=192.168.56.90 /etc/rc.d/init.d/functions case "$1" in start)   echo "start LVS of realserver" /sbin/ifconfig lo:0 $VIP1 broadcast $VIP1 netmask 255.255.255.255 up   echo "1" >/proc/sys/net/ipv4/conf/lo/arp_ignore echo "2" >/proc/sys/net/ipv4/conf/lo/arp_announce echo "1" >/proc/sys/net/ipv4/conf/all/arp_ignore echo "2" >/proc/sys/net/ipv4/conf/all/arp_announce ;; stop) /sbin/ifconfig lo:0 down echo "close lvs dirctorserver" echo "0" >/proc/sys/net/ipv4/conf/lo/arp_ignore echo "0" >/proc/sys/net/ipv4/conf/lo/arp_announce echo "0" >/proc/sys/net/ipv4/conf/all/arp_ignore echo "0" >/proc/sys/net/ipv4/conf/all/arp_announce ;; *) echo "usage:$0{start|stop}" exit 1 esac

1. 安装keepalived

注意：在用keepalived做tomcat和nginx的热备时，需要加入realserver的配置。但是做lvs的热备则不需要配置realserver，因为keepalived有lvs的配置参数。

 

backup

! Configuration File for keepalived   global_defs { notification_email { #[email protected] #[email protected] #[email protected] } 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 eth1     lvs_sync_daemon_inteface eth1 virtual_router_id 51 priority 100     nopreempt advert_int 1 authentication { auth_type PASS auth_pass 1111 } virtual_ipaddress { 192.168.56.90 } }   virtual_server 192.168.56.90 80 { delay_loop 6 lb_algo rr lb_kind DR #nat_mask 255.255.255.0 persistence_timeout 1 protocol TCP     }

master

! Configuration File for keepalived   global_defs { notification_email { #[email protected] #[email protected] #[email protected] } 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 eth1     lvs_sync_daemon_inteface eth1 virtual_router_id 51 priority 200   advert_int 1 authentication { auth_type PASS auth_pass 1111 } virtual_ipaddress { 192.168.56.90 } }   virtual_server 192.168.56.90 80 { delay_loop 6 lb_algo rr lb_kind DR #nat_mask 255.255.255.0 persistence_timeout 1 protocol TCP     }