完全卸载nginx及安装的详细步骤

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

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

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
我的环境是使用3A服务器安装的centos7
1、下载nginx安装包
wget http://nginx.org/download/ngi...

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
7、访问你的服务器IP
显示

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

作者:从容的黑框眼镜原文地址:https://segmentfault.com/a/1190000042356451

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