前言
在开局配置Nginx时有可能会配置谬误，报各种错误代码。看不懂或者懒得去看这个报错时，其实最简略的形式是卸载并重装咯。明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程序的具体步骤
1、进行Nginx软件
/usr/local/nginx/sbin/nginx -s stop
如果不晓得nginx装置门路，能够通过执行ps命令找到nginx程序的PID，而后kill其PID
2、查找根下所有名字蕴含nginx的文件
find / -name nginx
3、执行命令 rm -rf *删除nignx装置的相干文件
阐明：全局查找往往会查出很多相干文件，然而前缀根本都是雷同，前面不同的局部能够用*代替，以便疾速删除~
[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、其余设置
如果设置了Nginx开机自启动的话，可能还须要上面两步
chkconfig nginx off
rm -rf /etc/init.d/nginx
删除之后，便可重新安装nginx了
二、开始装置NGINX
a、装置所需插件
1、装置gcc
gcc是linux下的编译器在此不多做解释，感兴趣的小伙伴能够去查一下相干材料，它能够编译 C,C++,Ada,Object C和Java等语言
命令：查看gcc版本
gcc -v
个别阿里云的centOS7外面是都有的，没有装置的话会提醒命令找不到，
装置命令:
yum -y install gcc
2、pcre、pcre-devel装置
pcre是一个perl库，包含perl兼容的正则表达式库，nginx的http模块应用pcre来解析正则表达式，所以须要装置pcre库。
装置命令：
yum install -y pcre pcre-devel
3、zlib装置
zlib库提供了很多种压缩和解压缩形式nginx应用zlib对http包的内容进行gzip，所以须要装置
装置命令：
yum install -y zlib zlib-devel
4、装置openssl
openssl是web平安通信的基石，没有openssl，能够说咱们的信息都是在裸奔。。。。。。
装置命令：
yum install -y openssl openssl-devel
b、装置nginx
我的环境是应用3A服务器装置的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/上面
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装置目录
5、配置nginx的配置文件nginx.conf文件，次要也就是端口
#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; #} } }能够依照本人服务器的端口应用状况来进行配置
ESC键，wq！强制保留并退出
6、启动nginx服务
切换目录到/usr/local/nginx/sbin上面
启动nginx命令：
./nginx
7、拜访你的服务器IP
显示
阐明装置和配置都没问题OK了
8、nginx常用命令
1.启动nginx命点：./nginx
2.重启nginx命令：./nginx -s reload
- 进行 nginx 命令： ./nginx -s stop 或 ./nginx -s quit
- 敞开nginx过程：
ps -ef|grep nginx
命令 kill -9 8725 (过程号 下面的) 则敞开nginx