nginx+keepalived+3个站点

rtt4eter

一 部署环境：
master:192.168.127.129
slave:192.168.127.130
vip: 192.168.127.100  (在实际环境中需要公网ip)
两台服务器上面分别有三个站点，web,h5,app

nginx和keepalived 安装过程省略

二 master配置文件设置
1 master  负载均衡配置

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[iyunv@master vhosts]# vi ld.conf upstream www{      server 192.168.127.129:81;      server 192.168.127.130:81 ; ip_hash; } server {      listen 81;      server_name  www.ihnhlife.com;      location / {        proxy_pass http://www/;        proxy_set_header Host $host;   } } ## S.ihnhlife.com  APP端 upstream s{      server 192.168.127.129:83 ;      server 192.168.127.130:83 ; ip_hash; } server {      listen 83;      server_name  s.ihnhlife.com;      location / {        proxy_pass http://s/;        proxy_set_header Host $host;   } } upstream h5{      server 192.168.127.129:82;      server 192.168.127.130:82;      ip_hash; } server {      listen 82;      server_name  m.ihnhlife.com;      location / {        proxy_pass http://h5/;        proxy_set_header Host $host;   } }

2 master 3个站点的配置文件：

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[iyunv@master vhosts]# cat m.ihnhlife.com.conf server {     listen 192.168.127.129:82;     server_name localhost;     index index.html index.htm;     root /data/wwwroot/m.ihnhlife.com/; } [iyunv@master vhosts]# cat s.ihnhlife.com.conf server {     listen 192.168.127.129:83;     server_name localhost;     index index.html index.htm;     root /data/wwwroot/www.ihnhlife.com/; location / {             proxy_pass http://192.168.127.129:8080;             proxy_set_header Host  $host;             proxy_set_header X-Forwarded-For  $proxy_add_x_forwarded_for;             proxy_set_header X-Real-IP  $remote_addr; } } server {     listen 192.168.127.129:81;     server_name localhost;     index index.html index.htm;     root /data/wwwroot/www.ihnhlife.com/; }

3 master三个站点根目录配置 （/data/wwwroot）

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[iyunv@master wwwroot]# ls m.ihnhlife.com  s.ihnhlife.com  www.ihnhlife.com [iyunv@master m.ihnhlife.com]# cat index.html 129m.inhnlife.com [iyunv@master s.ihnhlife.com]# cat index.html 129 s.inhnlife.com [iyunv@master www.ihnhlife.com]# cat index.html 129 www.ihnhlife.com

4 master keepalived配置

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global_defs {    notification_email {      root@localhost    }    notification_email_from admin@localhost    smtp_server 127.0.0.1    smtp_connect_timeout 30    router_id LTT } vrrp_script chk_nginx {  #检测nginx服务是否在运行有很多方式，比如进程，用脚本检测等等    script "killall -0 nginx"  #用shell命令检查nginx服务是否存在    interval 1  #时间间隔为1秒检测一次    weight -2   #当nginx的服务不存在了，就把当前的权重-2    fall 2      #测试失败的次数    rise 1      #测试成功的次数 } vrrp_instance IN_1 {     state MASTER     interface eth0     virtual_router_id 22     priority 100     advert_int 1     authentication {         auth_type PASS         auth_pass aaaa     }     virtual_ipaddress {         192.168.127.100     }    track_script {     chk_nginx   #引用上面的vrrp_script定义的脚本名称 } }

5 master nginx的主配置文件：

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user nobody nobody; worker_processes 2; error_log /usr/local/nginx/logs/nginx_error.log crit; pid /usr/local/nginx/logs/nginx.pid; worker_rlimit_nofile 51200;      #并发数设置 events {     use epoll;     worker_connections 6000;   #单个后台worker process进程的最大并发链接数 } http {     include mime.types;     default_type application/octet-stream;     server_names_hash_bucket_size 3526;     server_names_hash_max_size 4096;     log_format combined_realip '$remote_addr$http_x_forwarded_for[$time_local]'   （log_format是日志的名字可以自定义）     '$host "$request_uri" $status'     '"$http_referer" "$http_user_agent"';     sendfile on;     tcp_nopush on;     keepalive_timeout 30;     client_header_timeout 3m;     client_body_timeout 3m;     send_timeout 3m;     connection_pool_size 256;     client_header_buffer_size 1k;     large_client_header_buffers 8 4k;     request_pool_size 4k;     output_buffers 4 32k;     postpone_output 1460;     client_max_body_size 10m;     client_body_buffer_size 256k;     client_body_temp_path /usr/local/nginx/client_body_temp;     proxy_temp_path /usr/local/nginx/proxy_temp;     fastcgi_temp_path /usr/local/nginx/fastcgi_temp;     fastcgi_intercept_errors on;     tcp_nodelay on;     gzip on;     gzip_min_length 1k;     gzip_buffers 4 8k;     gzip_comp_level 5;     gzip_http_version 1.1;     gzip_types text/plain application/x-javascript text/css text/htm application/xml;     include vhosts/*.conf;

三 slave 配置文件：
slave除了keepalvied的配置不同之外，其余的都是一样的，复制一份即可（3个站点的内容改一下，为了方便识别）

keepalived的配置：

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vim keepalived.conf   #此配置文件是从Master服务器上copy过来，只需小小改动 state BACKUP  #把这里原先的MASTER改成BACKUP priority 99   #把这里原先的100改成99

四 启动服务并测试

最后在两台主机分别启动nginx和keepalived 服务
1 停掉主上面的nginx服务，看是否可以正常访问3个站点
2 停掉主上面的keepalvied服务，看是否可以正常访问3个站点