3. Nginx domain name based virtual host configuration

Using domain name based virtual host configuration is a popular way. You can configure multiple domain names on the same IP and access them through port 80.

3.1 suppose the server has an IP address of 192.168.2.155

[root@localhost ~]# ifconfig ens33:5 192.168.2.155/24 up
[root@localhost ~]# ifconfig
ens33:5: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.2.155  netmask 255.255.255.0  broadcast 192.168.2.255
        ether 00:0c:29:16:90:ae  txqueuelen 1000  (Ethernet)

3.2 the domain name corresponding to 192.168.2.155 is as follows. Configure the host file of the host for testing

[root@localhost ~]# vim /etc/hosts
[root@localhost ~]# cat /etc/hosts|grep 192.168.2.155
192.168.2.155 www.oa.com
192.168.2.155 www.bbs.com
192.168.2.155 www.test.com

3.3 establish the root directory where the virtual host stores the web page, and create the homepage file index.html

[root@localhost ~]# cd /data/www/
[root@localhost www]# mkdir www.oa.com
[root@localhost www]# mkdir www.bbs.com
[root@localhost www]# mkdir www.test.com
[root@localhost www]# echo www.oa.com > www.oa.com/index.html
[root@localhost www]# echo www.bbs.com > www.bbs.com/index.html
[root@localhost www]# echo www.test.com > www.test.com/index.html

3.4 modify nginx.conf to include the virtual host configuration file in the main file

[root@localhost /]# cd /usr/local/nginx/conf/
[root@localhost conf]# ls
fastcgi.conf          fastcgi_params          koi-utf  mime.types          nginx.conf          scgi_params          uwsgi_params          win-utf
fastcgi.conf.default  fastcgi_params.default  koi-win  mime.types.default  nginx.conf.default  scgi_params.default  uwsgi_params.default
[root@localhost conf]# vim nginx.conf

Add the following configuration at the end of nginx.conf file

# stay http Find the following in the section and delete the“#"
    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                      '$status $body_bytes_sent "$http_referer" '
                      '"$http_user_agent" "$http_x_forwarded_for"';

# Add the following statement before the last "}" at the end of the configuration file, as follows
include vhost/*.conf

3.5 edit the configuration file of each domain name (configuration file of each virtual host)

[root@localhost conf]# cd vhost/
[root@localhost vhost]# cat www.oa.com.conf
    server {
        listen       192.168.2.155:80;
        server_name  www.oa.com;

        access_log   /data/logs/www.oa.com.log main;
        error_log    /data/logs/www.oa.com.error.log;

        location / {
            root   /data/www/www.oa.com;
            index  index.html index.htm;
        }
    }

[root@localhost vhost]# cat www.bbs.com.conf
    server {
        listen       192.168.2.155:80;
        server_name  www.bbs.com;

        access_log   /data/logs/www.bbs.com.log main;
        error_log    /data/logs/www.bbs.com.error.log;

        location / {
            root   /data/www/www.bbs.com;
            index  index.html index.htm;
        }
    }

[root@localhost vhost]# cat www.test.com.conf
    server {
        listen       192.168.2.155:80;
        server_name  www.test.com;

        access_log   /data/logs/www.test.com.log main;
        error_log    /data/logs/www.test.com.error.log;

        location / {
            root   /data/www/www.test.com;
            index  index.html index.htm;
        }
    }

[root@localhost vhost]# cat /data/www/www.oa.com/index.html
www.oa.com
[root@localhost vhost]# cat /data/www/www.bbs.com/index.html
www.bbs.com
[root@localhost vhost]# cat /data/www/www.test.com/index.html
www.test.com

3.6 create log file, otherwise nginx cannot be started

[root@localhost /]# mkdir -p /data/logs
[root@localhost /]# touch /data/logs/www.oa.com.log
[root@localhost /]# touch /data/logs/www.oa.com.error.log
[root@localhost /]# touch /data/logs/www.bbs.com.log
[root@localhost /]# touch /data/logs/www.bbs.com.error.log
[root@localhost /]# touch /data/logs/www.test.com.log
[root@localhost /]# touch /data/logs/www.test.com.error.log
[root@localhost /]# ls /data/logs/
www.oa.com.error.log  www.bbs.com.error.log  www.test.com.error.log
www.oa.com.log        www.bbs.com.log        www.test.com.log

3.7 test the configuration file before starting nginx

[root@localhost /]# cd /usr/local/nginx/sbin/
[root@localhost sbin]# ./nginx -t
nginx: the configuration file /usr/local/nginx/conf/nginx.conf syntax is ok
nginx: configuration file /usr/local/nginx/conf/nginx.conf test is successful
# start nginx 
[root@localhost sbin]# ./nginx

3.8 test documents

[root@localhost vhost]# curl http://www.oa.com
www.oa.com
[root@localhost vhost]# curl http://www.bbs.com
www.bbs.com
[root@localhost vhost]# curl http://www.test.com
www.test.com

Appendix: problems in configuration process

1. Problems in the final test

[root@localhost ~]# curl http://www.oa.com
curl: (7) Failed connect to www.oa.com:80; connection denied

Solution:
Check whether Nginx is listening on the corresponding port.

[root@localhost ~]# netstat -lnt
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State
tcp        0      0 0.0.0.0:111             0.0.0.0:*               LISTEN
tcp        0      0 192.168.2.155:80        0.0.0.0:*               LISTEN
tcp        0      0 0.0.0.0:8080            0.0.0.0:*               LISTEN
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN
tcp        0      0 127.0.0.1:25            0.0.0.0:*               LISTEN
tcp6       0      0 :::111                  :::*                    LISTEN
tcp6       0      0 :::22                   :::*                    LISTEN
tcp6       0      0 :::23                   :::*                    LISTEN
tcp6       0      0 ::1:25                  :::*                    LISTEN

1. When configuring the virtual host file, you need to add the listening IP address. Each virtual host configuration file is the same.

 listen       192.168.2.155:80;

2. Restart the server after configuration