本文使用的Linux发行版:CentOS6.7 下载地址:https://wiki.centos.org/Download
下载源:wget http://nginx.org/packages/centos/6/noarch/RPMS/nginx-release-centos-6-0.el6.ngx.noarch.rpm
安装源:yum install nginx-release-centos-6-0.el6.ngx.noarch.rpm -y(注意-y参数)
安装Nginx:yum install nginx
启动Nginx服务:service nginx start
停止Nginx服务:service nginx stop
查看Nginx运行状态:service nginx status
检查Nginx配置文件:nginx -t
服务运行中重新加载配置:nginx -s reload
添加Nginx服务自启动:chkconfig nginx on
修改Nginx所在主机的防火墙配置:vi /etc/sysconfig/iptables,将nginx使用的端口添加到允许列表中。
例如:-A INPUT -m state --state NEW -m tcp -p tcp --dport 80 -j ACCEPT (表示允许80端口通过)
修改Tomcat所在主机的防火墙配置:vi /etc/sysconfig/iptables,将tomcat使用的端口添加到允许列表中。
例如:-A INPUT -m state --state NEW -m tcp -p tcp --dport 8080 -j ACCEPT (表示允许8080端口通过)
如果主机上有多个tomcat的话,则按此规则添加多条,修改对应的端口号即可。
保存后重启防火墙:service iptables restart
Nginx启动时默认加载配置文件/etc/nginx/nginx.conf,而nginx.conf里会引用/etc/nginx/conf.d目录里的所有.conf文件。
因此可以将自己定制的一些配置写到单独.conf文件里,只要文件放在/etc/nginx/conf.d这个目录里即可,方便维护。
创建tomcats.conf:vi /etc/nginx/conf.d/tomcats.conf,内容如下:
- upstream tomcats {
- ip_hash;
- server 192.168.0.251:8080;
- server 192.168.0.251:8081;
- server 192.168.0.251:8082;
- }
修改default.conf:vi /etc/nginx/conf.d/default.conf,修改如下:
- #注释原有的配置
- #location / {
- # root /usr/share/nginx/html;
- # index index.html index.htm;
- #}
-
- #新增配置默认将请求转发到tomcats.conf配置的upstream进行处理
- location / {
- proxy_set_header Host $host;
- proxy_set_header X-Real-IP $remote_addr;
- proxy_set_header REMOTE-HOST $remote_addr;
- proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
- proxy_pass http://tomcats; #与tomcats.conf里配置的upstream同名
- }
保存后重新加载配置:nginx -s reload
修改default.conf:vi /etc/nginx/conf.d/default.conf,添加如下配置:
- #所有js,css相关的静态资源文件的请求由Nginx处理
- location ~.*\.(js|css)$ {
- root /opt/static-resources; #指定文件路径
- expires 12h; #过期时间为12小时
- }
- #所有图片等多媒体相关静态资源文件的请求由Nginx处理
- location ~.*\.(html|jpg|jpeg|png|bmp|gif|ico|mp3|mid|wma|mp4|swf|flv|rar|zip|txt|doc|ppt|xls|pdf)$ {
- root /opt/static-resources; #指定文件路径
- expires 7d; #过期时间为7天
- }
如果访问Nginx时出现502 Bad Gateway错误,则可能是Nginx主机上的SELinux限制了其使用http访问权限引起的,输入命令setsebool -P httpd_can_network_connect 1 开启权限即可。
文件/etc/nginx/nginx.conf完整配置如下:
- user nginx;
- worker_processes auto;
-
- error_log /var/log/nginx/error.log warn;
- pid /var/run/nginx.pid;
- worker_rlimit_nofile 100000;
-
-
- events {
- use epoll;
- multi_accept on;
- worker_connections 1024;
- }
-
-
- http {
- include /etc/nginx/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 /var/log/nginx/access.log main;
-
- sendfile on;
- server_tokens off;
- #tcp_nopush on;
-
- keepalive_timeout 65;
-
- gzip on;
- gzip_disable "msie6";
- gzip_static on;
- gzip_proxied any;
- gzip_min_length 1000;
- gzip_comp_level 4;
- gzip_types text/plain text/css application/json application/x-javascript text/xml application/xml application/xml+rss text/javascript;
-
- include /etc/nginx/conf.d/*.conf;
- }
文件/etc/nginx/conf.d/default.conf完整配置如下:
- server {
- listen 80;
- server_name localhost;
-
- #charset koi8-r;
- #access_log /var/log/nginx/log/host.access.log main;
-
- #location / {
- # root /usr/share/nginx/html;
- # index index.html index.htm;
- #}
-
- location / {
- proxy_set_header Host $host;
- proxy_set_header X-Real-IP $remote_addr;
- proxy_set_header REMOTE-HOST $remote_addr;
- proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
- proxy_pass http://web_servers;
- }
-
- location ~.*\.(js|css)$ {
- root /opt/static-resources;
- expires 12h;
- }
-
- location ~.*\.(html|jpg|jpeg|png|bmp|gif|ico|mp3|mid|wma|mp4|swf|flv|rar|zip|txt|doc|ppt|xls|pdf)$ {
- root /opt/static-resources;
- expires 7d;
- }
-
- #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 /usr/share/nginx/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;
- #}
- }
注意:如果执行命令时没有root权限,请在命令前面加上 sudo 执行。