Ubuntu下Nginx做负载实现高性能WEB服务器
Ubuntu下Nginx做负载实现高性能WEB服务器2—日志优化
Ubuntu下Nginx做负载实现高性能WEB服务器3—PHP网站的部署和时间同步
Ubuntu下Nginx做负载实现高性能WEB服务器4---RSYNC实现网站同步
Ubuntu下Nginx做负载实现高性能WEB服务器5---MySQL主主同步
1.环境
前端nginx：外网 192.168.80.8 内网 192.168.1.8 ubuntu10.10 X86 +nginx 1.0.14
后端web1 : 内网 192.168.1.9 ubuntu10.10 X86+apache 2.2.16+mysql 5.1.61+PHP 5.3.3
后端web2：内网 192.168.1.10 ubuntu10.10 X86+apache 2.2.16+mysql 5.1.61+PHP 5.3.3
Notice: 需要在web1和web2上做同样的设置，或者做好同步工作。
2.首先看前端nginx设置 /etc/nginx/conf.d/default.conf
upstream loadbalance {
server 192.168.1.9 weight=10 max_fails=3 fail_timeout=30s; # Reverse proxy to Web server 1
server 192.168.1.10 weight=10 max_fails=3 fail_timeout=30s; # Reverse proxy to Web server 2
server 192.168.1.11 backup;
server 192.168.1.12 down;
#ip_hash;
}
server
{
listen 192.168.80.8:80; # Listen on the external interface
server_name 192.168.80.8; # The server name , also can
location / {
proxy_pass ; # Load balance the URL location "/" to the upstream loadbalance
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; # Get the real client ip address
}
log_format 192.168.80.8 '$remote_addr - $remote_user [$time_local] $request '
'"$status" $body_bytes_sent "$http_referer" '
'"$http_user_agent" "$http_x_forwarded_for"';
access_log /var/log/nginx/access.log 192.168.80.8; # access log format
location /nginx_status { # nginx status monitor
stub_status on;
access_log off;
allow 10.10.10.3;
deny all;} # only allow 10.10.10.3 access
}
其中有下面几句代码，其中"proxy_set_header"指令便是向用来向后端apache2发送真实IP的。
proxy_set_header Host $host; # 向后端服务器发起请求时添加指定的header头信息
proxy_set_header X-Real-IP $remote_addr; # 向后端服务器发送真实 IP
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; # 让后端能直接通过变量获取真实IP
如果没有这几句，查看apache访问日志会看到全是127.0.0.1的访问记录
root@ubuntu2:~# less /var/log/apache2/access.log
