nginx+keepalived+3个站点
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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
[[email protected] 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:
[[email protected] 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/; } [[email protected] 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 $remote_addr; } } server { listen 192.168.127.129:81; server_name localhost; index index.html index.htm; root /data/wwwroot/www.ihnhlife.com/; }
3 master三个站点根目录配置 (/data/wwwroot)
[[email protected] wwwroot]# ls m.ihnhlife.com s.ihnhlife.com www.ihnhlife.com [[email protected] m.ihnhlife.com]# cat index.html 129m.inhnlife.com [[email protected] s.ihnhlife.com]# cat index.html 129 s.inhnlife.com [[email protected] www.ihnhlife.com]# cat index.html 129 www.ihnhlife.com
4 master keepalived配置
global_defs { notification_email { [email protected] } notification_email_from [email protected] smtp_server 127.0.0.1 smtp_connect_timeout 30 router_id LTT } vrrp_script chk_nginx { #检测nginx服务是否在运行有很多方式,比如进程,用脚本检测等等 script "killall -0 nginx" #用shell命令检查nginx服务是否存在 interval 1 #时间间隔为1秒检测一次 weight -2 #当nginx的服务不存在了,就把当前的权重-2 fall 2 #测试失败的次数 rise 1 #测试成功的次数 } vrrp_instance IN_1 { state MASTER interface eth0 virtual_router_id 22 priority 100 advert_int 1 authentication { auth_type PASS auth_pass aaaa } virtual_ipaddress { 192.168.127.100 } track_script { chk_nginx #引用上面的vrrp_script定义的脚本名称 } }
5 master nginx的主配置文件:
user nobody nobody; worker_processes 2; error_log /usr/local/nginx/logs/nginx_error.log crit; pid /usr/local/nginx/logs/nginx.pid; worker_rlimit_nofile 51200; #并发数设置 events { use epoll; worker_connections 6000; #单个后台worker process进程的最大并发链接数 } http { include mime.types; default_type application/octet-stream; server_names_hash_bucket_size 3526; server_names_hash_max_size 4096; log_format combined_realip ‘$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:
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
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