Detailed explanation of three ways to configure Nginx virtual hosts (based on IP)

[root@localhost ~]# ifconfig ens33:1 192.168.2.151/24 up
[root@localhost ~]# ifconfig ens33:2 192.168.2.152/24 up
[root@localhost ~]# ifconfig ens33:3 192.168.2.153/24 up
[root@localhost ~]# ifconfig
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
 inet 192.168.2.106 netmask 255.255.255.0 broadcast 192.168.2.255
 inet6 fe80::2a8d:be6:a4a8:ea0 prefixlen 64 scopeid 0x20<link>
 ether 00:0c:29:16:90:ae txqueuelen 1000 (Ethernet)
 RX packets 1220 bytes 87955 (85.8 KiB)
 RX errors 0 dropped 0 overruns 0 frame 0
 TX packets 206 bytes 23755 (23.1 KiB)
 TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

ens33:1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
 inet 192.168.2.151 netmask 255.255.255.0 broadcast 192.168.2.255
 ether 00:0c:29:16:90:ae txqueuelen 1000 (Ethernet)

ens33:2: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
 inet 192.168.2.152 netmask 255.255.255.0 broadcast 192.168.2.255
 ether 00:0c:29:16:90:ae txqueuelen 1000 (Ethernet)

ens33:3: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
 inet 192.168.2.153 netmask 255.255.255.0 broadcast 192.168.2.255
 ether 00:0c:29:16:90:ae txqueuelen 1000 (Ethernet)

lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
 inet 127.0.0.1 netmask 255.0.0.0
 inet6 ::1 prefixlen 128 scopeid 0x10<host>
 loop txqueuelen 1 (Local Loopback)
 RX packets 72 bytes 6252 (6.1 KiB)
 RX errors 0 dropped 0 overruns 0 frame 0
 TX packets 72 bytes 6252 (6.1 KiB)
 TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

[root@localhost ~]# vim /etc/hosts
[root@localhost ~]# cat /etc/hosts
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
192.168.2.151 www.test151.com
192.168.2.152 www.test152.com
192.168.2.153 www.test153.com

C:\Users\1234>ipconfig /flushdns

Windows IP Configuration successfully flushed the DNS resolution cache.

[root@localhost /]# mkdir -p /data/www
[root@localhost /]# cd /data/www
[root@localhost www]# mkdir 151
[root@localhost www]# mkdir 152
[root@localhost www]# mkdir 153
[root@localhost www]# echo "192.168.2.151" > 151/index.html
[root@localhost www]# echo "192.168.2.152" > 152/index.html
[root@localhost www]# echo "192.168.2.153" > 153/index.html
[root@localhost www]# ls
151 152 153

[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

# Find the following content in the http section and delete the "#" in front of each line
 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 shown below include vhost/*.conf;
}

[root@localhost conf]# mkdir -p vhost
[root@localhost conf]# cd vhost/
[root@localhost vhost]# cat www.test151.conf
 server {
 listen 192.168.2.151:80;
 # Configure to the actual domain name. The domain name of each virtual host configuration file is the same #server_name www.test.com;

 access_log /data/logs/www.test151.com.log main;
 error_log /data/logs/www.test151.com.error.log;

 location / {
  root /data/www/151;
  index index.html index.htm;
 }
 }

[root@localhost vhost]# cat www.test152.conf
 server {
 listen 192.168.2.152:80;
 # Configure to the actual domain name. The domain name of each virtual host configuration file is the same #server_name www.test.com;

 access_log /data/logs/www.test152.com.log main;
 error_log /data/logs/www.test152.com.error.log;

 location / {
  root /data/www/152;
  index index.html index.htm;
 }
 }

[root@localhost vhost]# cat www.test153.conf
 server {
 listen 192.168.2.153:80;
 # Configure to the actual domain name. The domain name of each virtual host configuration file is the same #server_name www.test.com;

 access_log /data/logs/www.test153.com.log main;
 error_log /data/logs/www.test153.com.error.log;

 location / {
  root /data/www/153;
  index index.html index.htm;
 }
 }

[root@localhost /]# mkdir -p /data/logs
[root@localhost /]# touch /data/logs/www.test151.com.log
[root@localhost /]# touch /data/logs/www.test151.com.error.log
[root@localhost /]# touch /data/logs/www.test152.com.log
[root@localhost /]# touch /data/logs/www.test152.com.error.log
[root@localhost /]# touch /data/logs/www.test153.com.log
[root@localhost /]# touch /data/logs/www.test153.com.error.log
[root@localhost /]# ls /data/logs/
www.test151.com.error.log www.test152.com.error.log www.test153.com.error.log
www.test151.com.log www.test152.com.log www.test153.com.log

[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

[root@localhost sbin]# curl www.test151.com
192.168.2.151
[root@localhost sbin]# curl www.test152.com
192.168.2.152
[root@localhost sbin]# curl www.test153.com
192.168.2.153

[root@localhost sbin]# ./nginx -t
nginx: [emerg] unexpected "}" in /usr/local/nginx/conf/nginx.conf:122
nginx: configuration file /usr/local/nginx/conf/nginx.conf test failed

include vhost/*.conf;