# nginx服务使用的用户
user  nginx;
# 工作进程数,一般和cpu核心数保持一致
worker_processes  1;
# nginx的错误日志路径
error_log  /var/log/nginx/error.log warn;
# nginx服务启动的pid存放路径
pid        /var/run/nginx.pid;

# 事件模块，配置内核模型
events {
    worker_connections  1024;  #每个进程允许最大连接数，一般调到10000左右就行
}

# http协议中间件配置
http {
    include       /etc/nginx/mime.types;  # content-type配置
    default_type  application/octet-stream;

    # 日志类型
    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                      '$status $body_bytes_sent "$http_referer" '
                      '"$http_user_agent" "$http_x_forwarded_for"';
	
    # 访问日志路径
    access_log  /var/log/nginx/access.log  main;

    # 开启sendfile功能
    sendfile        on;
    #tcp_nopush     on;

    # 设置客户端超时时间
    keepalive_timeout  65;

    #gzip  on;

    # 最后会读这些配置
    include /etc/nginx/conf.d/*.conf;
}

# >>> vim /etc/nginx/nginx.conf
# nginx的错误日志路径
error_log  /var/log/nginx/error.log warn;
# ...
http {
    # 定义日志类型'main'
    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                      '$status $body_bytes_sent "$http_referer" '
                      '"$http_user_agent" "$http_x_forwarded_for"';
    # 使用'main'格式记录日志
    access_log  /var/log/nginx/access.log  main;
}

# >>> vim /etc/nginx/conf.d/default.conf
# 该模块需要在 server或location下配置

server {
    #...
    location /mystatus {
        stub_status;
    }
}
# 通过访问url /mystatus可以得到当前链接数

# >>> vim /etc/nginx/conf.d/default.conf
# 对客户端IP地址进行连接限制
limit_conn_zone $binanry_remote_addr zone=conn_zone:1m;
server {
    #...
    location / {
        root /usr/share/nginx/html;
        # 限制客户端同一时刻只允许一个IP连接过来
        limit_conn conn_zone 1;
        index index.html index.htm;
    }
}