Configuration file - nginx multi-site configuration, cannot be accessed through domain name, using IP access will jump to one of the sites

Question

I have set up Nginx multi-site on one server, but the domain names used to access these sites cannot be accessed. The error is as shown below:

#You will be redirected to one of the sites through the IP address. The specific performance is as follows:

When all configurations are enabled, all domain names cannot be accessed. The IP access shows siteD
After removing siteD, jump to siteB, after removing siteB, 404, after removing siteB, jump to siteA, remove siteA Then jump to siteC

After checking for a long time, I still don’t know what the problem is. Please help me to troubleshoot it/w\

The following is the specific configuration file:

nginx.conf

user  nginx;
worker_processes  1;

error_log  /var/log/nginx/error.log warn;
pid        /var/run/nginx.pid;


events {
    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;
    #tcp_nopush     on;

    server_tokens   off;
    underscores_in_headers off;

    keepalive_timeout  65;

    #gzip  on;

    include /etc/nginx/conf.d/*.conf;
}

default.conf

server {
    listen       80;
    server_name  _;

    location / {
        return 404;
    }
}

siteA.conf

server {
    listen       80;
    server_name  siteA.domain.com;

    access_log  /var/log/nginx/siteA.access.log  main;

    location / {
        root   /usr/share/nginx/html/siteA;
        index  index.php index.html index.htm;
    }

    error_page   500 502 503 504  /50x.html;
    location = /50x.html {
        root   /usr/share/nginx/html;
    }

    location ~ \.php$ {
         #try_files $uri =404;
         #root /usr/share/nginx/html/siteA;
         fastcgi_split_path_info ^(.+.php)(/.+)$;
         fastcgi_pass unix:/dev/shm/php5.6-fpm.sock;
         fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
         fastcgi_index index.php;
         include fastcgi_params;
    }
}

siteB.conf

server {
    listen       80;
    server_name  siteB.domain.com;

    access_log  /var/log/nginx/siteB.access.log  main;

    location / {
        root   /usr/share/nginx/html/siteB;
        index  index.php index.html index.htm;
    }

    error_page   500 502 503 504  /50x.html;
    location = /50x.html {
        root   /usr/share/nginx/html;
    }

    location ~ \.php$ {
         try_files $uri =404;
         root /usr/share/nginx/html/siteB;
         fastcgi_split_path_info ^(.+.php)(/.+)$;
         fastcgi_pass unix:/dev/shm/php5.6-fpm.sock;
         fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
         fastcgi_index index.php;
         include fastcgi_params;
    }
}

siteC.conf

server {
    listen       80;
    server_name  siteC.domain.com;

    access_log  /var/log/nginx/siteC.access.log  main;

    location / {
        root   /usr/share/nginx/html/siteC/;
        index  index.php index.html index.htm;
    }

    error_page   500 502 503 504  /50x.html;
    location = /50x.html {
        root   /usr/share/nginx/html;
    }

    location ~ \.php$ {
         try_files $uri =404;
         root /usr/share/nginx/html/siteC/;
         fastcgi_split_path_info ^(.+.php)(/.+)$;
         fastcgi_pass unix:/dev/shm/php5.6-fpm.sock;
         fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
         fastcgi_index index.php;
         include fastcgi_params;
    }
}

siteD.conf

server {
    listen       80;
    server_name  siteD.domain.com;

    access_log  /var/log/nginx/siteD.access.log  main;

    location ~ ^/(baidu|webscan|yx_scan) {
        root /usr/share/nginx/siteD;
    }

    location / {
       proxy_set_header Host $host;
       proxy_set_header X-Real-IP $remote_addr;
       proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
       proxy_set_header User-Agent $http_user_agent;
       proxy_set_header Accept-Encoding "";
       proxy_redirect off;
       proxy_pass http://127.0.0.1:8080/siteD/;
       rewrite ^/WebGoat/(.*)$ / last;
    }

    error_page   500 502 503 504  /50x.html;
    location = /50x.html {
        root   /usr/share/nginx/html;
    }
}

Nginx Info (installed using apt, mainline)

nginx version: nginx/1.11.9
built by gcc 4.8.4 (Ubuntu 4.8.4-2ubuntu1~14.04.3) 
built with OpenSSL 1.0.1f 6 Jan 2014
TLS SNI support enabled
configure arguments: --prefix=/etc/nginx --sbin-path=/usr/sbin/nginx --modules-path=/usr/lib/nginx/modules --conf-path=/etc/nginx/nginx.conf --error-log-path=/var/log/nginx/error.log --http-log-path=/var/log/nginx/access.log --pid-path=/var/run/nginx.pid --lock-path=/var/run/nginx.lock --http-client-body-temp-path=/var/cache/nginx/client_temp --http-proxy-temp-path=/var/cache/nginx/proxy_temp --http-fastcgi-temp-path=/var/cache/nginx/fastcgi_temp --http-uwsgi-temp-path=/var/cache/nginx/uwsgi_temp --http-scgi-temp-path=/var/cache/nginx/scgi_temp --user=nginx --group=nginx --with-compat --with-file-aio --with-threads --with-http_addition_module --with-http_auth_request_module --with-http_dav_module --with-http_flv_module --with-http_gunzip_module --with-http_gzip_static_module --with-http_mp4_module --with-http_random_index_module --with-http_realip_module --with-http_secure_link_module --with-http_slice_module --with-http_ssl_module --with-http_stub_status_module --with-http_sub_module --with-http_v2_module --with-mail --with-mail_ssl_module --with-stream --with-stream_realip_module --with-stream_ssl_module --with-stream_ssl_preread_module --with-cc-opt='-g -O2 -fstack-protector --param=ssp-buffer-size=4 -Wformat -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -fPIC' --with-ld-opt='-Wl,-Bsymbolic-functions -Wl,-z,relro -Wl,-z,now -Wl,--as-needed -pie'

Nginx Debug Error Log

2017/02/22 11:29:27 [notice] 6335#6335: using the "epoll" event method
2017/02/22 11:29:27 [notice] 6335#6335: nginx/1.11.9
2017/02/22 11:29:27 [notice] 6335#6335: built by gcc 4.8.4 (Ubuntu 4.8.4-2ubuntu1~14.04.3)
2017/02/22 11:29:27 [notice] 6335#6335: OS: Linux 3.13.0-100-generic
2017/02/22 11:29:27 [notice] 6335#6335: getrlimit(RLIMIT_NOFILE): 1000000:1000000
2017/02/22 11:29:27 [notice] 6336#6336: start worker processes
2017/02/22 11:29:27 [notice] 6336#6336: start worker process 6337
2017/02/22 11:30:27 [info] 6337#6337: *1 client timed out (110: Connection timed out) while waiting for request, client: 117.34.28.13, server: 0.0.0.0:80
2017/02/22 11:30:49 [info] 6337#6337: *2 client timed out (110: Connection timed out) while waiting for request, client: 47.90.50.49, server: 0.0.0.0:80
2017/02/22 11:38:44 [info] 6337#6337: *3 client timed out (110: Connection timed out) while waiting for request, client: 183.61.236.14, server: 0.0.0.0:80
2017/02/22 11:38:44 [info] 6337#6337: *4 client timed out (110: Connection timed out) while waiting for request, client: 124.95.168.140, server: 0.0.0.0:80
2017/02/22 11:38:45 [info] 6337#6337: *5 client timed out (110: Connection timed out) while waiting for request, client: 61.182.137.6, server: 0.0.0.0:80
2017/02/22 11:38:46 [info] 6337#6337: *6 client timed out (110: Connection timed out) while waiting for request, client: 117.27.149.14, server: 0.0.0.0:80
2017/02/22 11:38:50 [info] 6337#6337: *7 client timed out (110: Connection timed out) while waiting for request, client: 42.236.7.68, server: 0.0.0.0:80
2017/02/22 11:38:58 [info] 6337#6337: *8 client timed out (110: Connection timed out) while waiting for request, client: 124.95.168.140, server: 0.0.0.0:80
2017/02/22 11:38:59 [info] 6337#6337: *9 client timed out (110: Connection timed out) while waiting for request, client: 61.182.137.6, server: 0.0.0.0:80
2017/02/22 11:38:59 [info] 6337#6337: *10 client timed out (110: Connection timed out) while waiting for request, client: 183.61.236.14, server: 0.0.0.0:80
2017/02/22 11:39:02 [info] 6337#6337: *11 client timed out (110: Connection timed out) while waiting for request, client: 117.27.149.14, server: 0.0.0.0:80
2017/02/22 11:39:12 [info] 6337#6337: *12 client timed out (110: Connection timed out) while waiting for request, client: 124.95.168.140, server: 0.0.0.0:80
2017/02/22 11:39:12 [info] 6337#6337: *13 client timed out (110: Connection timed out) while waiting for request, client: 61.182.137.6, server: 0.0.0.0:80
2017/02/22 11:39:15 [info] 6337#6337: *14 client timed out (110: Connection timed out) while waiting for request, client: 183.61.236.14, server: 0.0.0.0:80

Answer 1

This question has been answered on v2ex and answered by @Showfom. The reason is that the domain name has not been registered and has been blocked by the computer room

Answer 2

It seems to be the default value, so it is better not to use wildcards

server {
    listen 80 default;
    return 404 'no site found';
}

Answer 3

Check whether the domain name is effectively resolved to the server. If it is not resolved correctly, set the correct resolution at the domain name operator.

Check the server firewall settings and enable port 80 access restrictions. Also check whether the server operator has set firewall settings.

After configuring nginx, you can test whether it is available on the server.

curl siteA.domain.com

If the domain name is in unresolved state

echo '127.0.0.1 siteA.domain.com' >> /etc/hosts
systemctl restart nginx
curl siteA.domain.com

If the server cannot be accessed normally, the problem occurs in the nginx configuration.
If the server can be accessed but not locally, the problem occurs in domain name resolution or firewall.

Judging from my limited nginx configuration knowledge, there isn’t much wrong with it.