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完全卸载nginx以及安装的超详细步骤

江南云朵 人气:0

前言

在开局配置Nginx时有可能会配置错误，报各种错误代码。看不懂或者懒得去看这个报错时，其实最简单的方式是卸载并重装咯。今天就带大家一起学习下，如何彻底卸载nginx程序。

一、卸载NGINX

卸载nginx程序的详细步骤

1、停止Nginx软件

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

 如果不知道nginx安装路径，可以通过执行ps命令找到nginx程序的PID，然后kill其PID

2、查找根下所有名字包含nginx的文件

find / -name nginx

3、执行命令 rm -rf *删除nignx安装的相关文件

说明：全局查找往往会查出很多相关文件，但是前缀基本都是相同，后面不同的部分可以用*代替，以便快速删除~

[root@qll251 ~]# rm -rf /usr/local/sbin/nginx
[root@qll251 ~]# rm -rf /usr/local/nginx
[root@qll251 ~]# rm -rf /usr/src/nginx-1.11.1
[root@qll251 ~]# rm -rf /var/spool/mail/nginx

4、其他设置

如果设置了Nginx开机自启动的话，可能还需要下面两步

删除之后，便可重新安装nginx了 

二、开始安装NGINX

a、安装所需插件

1、安装gcc

gcc是linux下的编译器在此不多做解释，感兴趣的小伙伴可以去查一下相关资料，它可以编译 C,C++,Ada,Object C和Java等语言

命令：查看gcc版本 

gcc -v

一般阿里云的centOS7里面是都有的，没有安装的话会提示命令找不到，

安装命令:

yum -y install gcc

2、pcre、pcre-devel安装

pcre是一个perl库，包括perl兼容的正则表达式库，nginx的http模块使用pcre来解析正则表达式，所以需要安装pcre库。

安装命令：

yum install -y pcre pcre-devel

3、zlib安装

zlib库提供了很多种压缩和解压缩方式nginx使用zlib对http包的内容进行gzip，所以需要安装

安装命令：

yum install -y zlib zlib-devel

4、安装openssl

openssl是web安全通信的基石，没有openssl，可以说我们的信息都是在裸奔。。。。。。

安装命令：

yum install -y openssl openssl-devel

b、安装nginx

1、下载nginx安装包

wget http://nginx.org/download/nginx-1.9.9.tar.gz

2、把压缩包解压到usr/local/java

tar -zxvf nginx-1.9.9.tar.gz

3、切换到cd /usr/local/java/nginx-1.9.9/下面

执行三个命令：

./configure --prefix=/usr/local/nginx --with-http_stub_status_module --with-http_ssl_modulｅ
 
make
 
make install

4、切换到/usr/local/nginx安装目录

5、配置nginx的配置文件nginx.conf文件，主要也就是端口

 
#user  nobody;
worker_processes  4;
worker_rlimit_nofile 65535;
 
#error_log  logs/error.log;
#error_log  logs/error.log  notice;
#error_log  logs/error.log  info;
 
#pid        logs/nginx.pid;
 
 
events {
    worker_connections  65535;
	#use epoll;
	#accept_mutex off;
	#multi_accept off;
}
 
 
http {
    include       mime.types;
    default_type  application/octet-stream;
 
    #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;
	#tcp_nodelay    on;
 
    #keepalive_timeout  0;
    keepalive_timeout  65;
	#send_timeout 10s;
    #types_hash_max_size 2048;
    #client_header_buffer_size 4k;
    #client_max_body_size 8m;
	
	proxy_connect_timeout 300;
    proxy_send_timeout 300;
    proxy_read_timeout 300;
    proxy_buffer_size 64k;
    proxy_buffers 4 64k;
    proxy_busy_buffers_size 128k;
    proxy_temp_file_write_size 128k;
 
    #gzip  on;
	
	upstream test123456 {
		ip_hash;
		server 192.168.0.192:8081;
		server 192.168.0.144:8081;
		server 192.168.0.203:8081;
    }
	
	upstream testjk123456 {
		#ip_hash;
		server 192.168.0.192:8081;
		server 192.168.0.144:8081;
		server 192.168.0.203:8081;
    }
 
    
 
 
    # 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;
    #    }
    #}
	
	server {
        listen       443 ssl;
        server_name  test.jjtech.cn;
		ssl_certificate      /usr/local/java/ng.crt;
        ssl_certificate_key  /usr/local/java//ng.key;
    
        ssl_session_cache    shared:SSL:1m;
        ssl_session_timeout  5m;
    
        #ssl_ciphers  HIGH:!aNULL:!MD5;
        ssl_prefer_server_ciphers  on;
		
		ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
        ssl_ciphers ECDH+AESGCM:ECDH+AES256:ECDH+AES128:ECDH+3DES:RSA+AESGCM:RSA+AES:RSA+3DES:!aNULL:!eNULL:!MD5:!DSS:!EXP:!ADH:!LOW:!MEDIUM;
		proxy_ssl_server_name on;
 
        #charset koi8-r;
		charset utf-8;
 
        #access_log  logs/host.access.log  main;
		#rewrite ^(.*)$ https://${server_name}$1 permanent;
		
		location /h5 {
            root   /usr/local/java;
            index  index.html index.htm;
        }
		
		location ~ ^/h5.*\.(css|jpeg|jpg|gif|js)$ {
            root   /usr/local/java;
        }
        
		
		location /bz {
            proxy_pass http://test123456/;
			proxy_send_timeout 18000;
			proxy_read_timeout 18000;
			proxy_connect_timeout 18000;
			
			proxy_set_header Upgrade $http_upgrade;
			proxy_set_header Connection  "upgrade";
	
        }
		
		location /api {
            proxy_pass http://testjk123456/;
			proxy_send_timeout 18000;
			proxy_read_timeout 18000;
			proxy_connect_timeout 18000;
			proxy_set_header Upgrade $http_upgrade;
			proxy_set_header Connection  "upgrade";
        }
		
		location / {
		   proxy_pass http://test123456/$request_uri;
		   proxy_set_header Upgrade $http_upgrade;
		   proxy_set_header Connection  "upgrade";
		 }
		 
		 location /apilogin {
		   proxy_pass http://test123456/$request_uri;
		   proxy_set_header Upgrade $http_upgrade;
		   proxy_set_header Connection  "upgrade";
		 }
		
		
		
        
        #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 {
            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;
        #}
    }
 
}

可以按照自己服务器的端口使用情况来进行配置

ESC键，wq！强制保存并退出

6、启动nginx服务

切换目录到/usr/local/nginx/sbin下面

 启动nginx命令：

./nginx

8、访问你的服务器IP

显示

 说明安装和配置都没问题OK了

9、nginx常用命令

1.启动nginx命点：./nginx 

2.重启nginx命令：./nginx -s reload

3. 停止 nginx 命令： ./nginx -s stop  或 ./nginx -s quit

4. 关闭nginx进程：

ps -ef|grep nginx

命令 kill -9 8725 (进程号 上面的)   则关闭nginx 

总结

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