Configure nginx reverse proxy tomcat and other webservers under centos

The following all take centos as an example
1. nginx installation
1) Dependency installation

# yum install -y zlib zlib-devel openssl openssl-devel pcre pcre-devel gcc

2) Download nginx body and cache module
ngx_cache_purge http://labs.frickle.com/nginx_ngx_cache_purge/
nginx http://nginx.org
3) Create user

# useradd nginx

4) Compile and install nginx
The two files downloaded above are placed in the /home/nginx directory, and decompressed
into the nginx directory (different versions have different names), execute the configuration before compilation, and pay attention to modifying the last version of the ngx_cache_purge plugin

# ./configure --user=nginx --group=nginx --prefix=/usr/local/nginx --with-http_ssl_module --with-http_sub_module --with-http_stub_status_module --add-module=../ngx_cache_purge-x.x
# make
# make install

5)
Refer to the attachment nginx.conf for configuring nginx
6) Create a cache directory
The directory set in the nginx configuration file shall prevail
7) Start and shut down

The running user has been configured as nginx during installation, it must be started with the root user, and the process will belong to the nginx user
.

/usr/local/nginx/sbin/nginx

closure

/usr/local/nginx/sbin/nginx -s stop

read configuration again

/usr/local/nginx/sbin/nginx -s relo

8) Set up self-startup
at boot. Add the startup command to the /etc/rc.local directory,
or use systemctl supported by centos7 later.
9) The firewall allows nginx to listen to the port
below centos7 and use the iptables related commands
. Above centos7, use the firewall-cmd related commands

Note: If the backend server is tomcat, please first execute source /etc/profile in /etc/rc.local to introduce JDK configuration (provided that JDK's JAVA_HOME and other variables are set in the profile file)

 

Attach nginx.conf

user  nginx nginx;
# 工作进程 默认1
worker_processes  2;

error_log  /usr/local/nginx/logs/error.log crit;
#error_log  logs/error.log  notice;
#error_log  logs/error.log  info;

pid        /usr/local/nginx/logs/nginx.pid;

worker_rlimit_nofile 65535;

events {
    use epoll;
    worker_connections  65535;
}


http {
    include       mime.types;
    default_type  application/octet-stream;

    charset utf-8;
    
    server_names_hash_bucket_size 128;
    client_header_buffer_size 32k;
    large_client_header_buffers 4 32k;
    client_max_body_size 300m;
    
    #log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
    #                  '$status $body_bytes_sent "$http_referer" '
    #                  '"$http_user_agent" "$http_x_forwarded_for"';

    #access_log  logs/access.log  main;

    sendfile        on;
    tcp_nopush     on;

    #keepalive_timeout  0;
    keepalive_timeout  60;

    tcp_nodelay on;

    client_body_buffer_size 512k;
    proxy_connect_timeout 5;
    proxy_read_timeout 60;
    proxy_send_timeout 5;
    proxy_buffer_size 16k;
    proxy_buffers 4 64k;
    proxy_busy_buffers_size 128k;
    proxy_temp_file_write_size 128k;
    
    gzip  on;
    gzip_min_length 1k;
    gzip_buffers 4 16k;
    gzip_http_version 1.1;
    gzip_comp_level 2;
    gzip_types text/plain application/x-javascript text/css application/xml;
    gzip_vary on;
    
    # 临时文件目录设置
    proxy_temp_path /home/nginx/nginx_cache/proxy_temp_dir;
    # 缓存文件目录设置 过期时间设置 这里设置过期时间是1天(1d), 缓存最多30g
    proxy_cache_path /home/nginx/nginx_cache/proxy_cache_dir  levels=1:2  keys_zone=cache_one:200m  inactive=1d  max_size=30g;

    # 后端服务器配置
    upstream backend_server {
        # 这里设置后端服务器权重, 最大尝试次数, 超时
        server   127.0.0.1:8081 weight=1 max_fails=2 fail_timeout=30s;
        server   127.0.0.1:8082 weight=1 max_fails=2 fail_timeout=30s;
        ip_hash;
    }
    
    server {
        # nginx侦听端口
        listen       80;
        # 服务器名称, 不需要和主机名一致
        server_name  myServerName;

        charset utf-8;
        
        # 关闭访问日志, 例如某某IP访问了某资源
        access_log  off;
        #access_log  logs/host.access.log  main;

        location / {
            root   html;
            index  index.html index.htm;
            
            proxy_next_upstream http_502 http_504 error timeout invalid_header;
            proxy_cache cache_one;
            
            proxy_cache_valid  200 304 12h;
            
            proxy_cache_key $host$uri$is_args$args;
            # 这里配置了$server_port用于应付nginx端口非80的情况
            proxy_set_header Host  $host:$server_port;
            proxy_set_header X-Forwarded-For  $remote_addr:$server_port;
            proxy_pass http://backend_server;
            expires  1d;
        }
        
        location ~ /purge(/.*)
        {
            allow  127.0.0.1;
            deny  all;
            proxy_cache_purge  cache_one  $host$1$is_args$args;
        }
        
        location ~ .*\.(php|jsp|cgi)?$
        {
            proxy_set_header Host $host;
            proxy_set_header X-Forwarded-For $remote_addr;
            proxy_pass http://backend_server;
        }

        #error_page  404              /404.html;

        # redirect server error pages to the static page /50x.html
        #
        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            # 错误信息页存放位置
            root   html;
        }

        # proxy the PHP scripts to Apache listening on 127.0.0.1:80
        #
        #location ~ \.php$ {
        #    proxy_pass   http://127.0.0.1;
        #}

        # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
        #
        #location ~ \.php$ {
        #    root           html;
        #    fastcgi_pass   127.0.0.1:9000;
        #    fastcgi_index  index.php;
        #    fastcgi_param  SCRIPT_FILENAME  /scripts$fastcgi_script_name;
        #    include        fastcgi_params;
        #}

        # deny access to .htaccess files, if Apache's document root
        # concurs with nginx's one
        #
        #location ~ /\.ht {
        #    deny  all;
        #}
    }


    # another virtual host using mix of IP-, name-, and port-based configuration
    #
    #server {
    #    listen       8000;
    #    listen       somename:8080;
    #    server_name  somename  alias  another.alias;

    #    location / {
    #        root   html;
    #        index  index.html index.htm;
    #    }
    #}


    # HTTPS server
    #
    #server {
    #    listen       443 ssl;
    #    server_name  localhost;

    #    ssl_certificate      cert.pem;
    #    ssl_certificate_key  cert.key;

    #    ssl_session_cache    shared:SSL:1m;
    #    ssl_session_timeout  5m;

    #    ssl_ciphers  HIGH:!aNULL:!MD5;
    #    ssl_prefer_server_ciphers  on;

    #    location / {
    #        root   html;
    #        index  index.html index.htm;
    #    }
    #}

}

 

{{o.name}}

{{m.name}}