完全卸载nginx及安装的详细步骤

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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

image.png

2、查找根下所有名字包含nginx的文件

find / -name nginx

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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

 

chkconfig nginx off

 

rm -rf /etc/init.d/nginx

 

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

image.png

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

image.png

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

我的环境是使用3A服务器安装的centos7

1、下载nginx安装包

wget nginx.org/download/ng…  

 

 

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

image.png

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  'remoteaddr−remote_addr - remote_user [timelocal]"time_local] "request" '

    #                  'statusstatus body_bytes_sent "$http_referer" '

    #                  '"httpuseragent""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:// 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

image.png

启动nginx命令：

./nginx

7、访问你的服务器IP

显示

image.png

说明安装和配置都没问题OK了

 

8、nginx常用命令

1.启动nginx命点：./nginx

2.重启nginx命令：./nginx -s reload

 

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

  2. 关闭nginx进程：

 

ps -ef|grep nginx

 

命令 kill -9 8725 (进程号 上面的)   则关闭nginx

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