Intenté crear un servidor DNS, pero cuando ejecuto el comando dig el servidor no devuelve nada. No he tenido ninguna experiencia previa y solo estoy siguiendo este tutorial:http://www.itzgeek.com/how-tos/linux/centos-how-tos/configure-dns-bind-server-on-centos-7-rhel-7.html.
archivo nombrado.conf:
//
// named.conf
//
// Provided by Red Hat bind package to configure the ISC BIND named(8) DNS
// server as a caching only nameserver (as a localhost DNS resolver only).
//
// See /usr/share/doc/bind*/sample/ for example named configuration files.
//
options {
listen-on port 53 { 127.0.0.1;192.168.38.103; };
listen-on-v6 port 53 { ::1; };
directory "/var/named";
dump-file "/var/named/data/cache_dump.db";
statistics-file "/var/named/data/named_stats.txt";
memstatistics-file "/var/named/data/named_mem_stats.txt";
allow-query { localhost; 192.168.38.0/24; };
/*
- If you are building an AUTHORITATIVE DNS server, do NOT enable recursion.
- If you are building a RECURSIVE (caching) DNS server, you need to enable
recursion.
- If your recursive DNS server has a public IP address, you MUST enable access
control to limit queries to your legitimate users. Failing to do so will
cause your server to become part of large scale DNS amplification
attacks. Implementing BCP38 within your network would greatly
reduce such attack surface
*/
recursion yes;
dnssec-enable yes;
dnssec-validation yes;
dnssec-lookaside auto;
/* Path to ISC DLV key */
bindkeys-file "/etc/named.iscdlv.key";
managed-keys-directory "/var/named/dynamic";
pid-file "/run/named/named.pid";
session-keyfile "/run/named/session.key";
};
logging {
channel default_debug {
file "data/named.run";
severity dynamic;
};
};
zone "." IN {
type hint;
file "named.ca";
};
zone "dynavio.coop" IN {
type master;
file "fwd.dynavio.coop.db";
dnssec-enable yes;
dnssec-validation yes;
dnssec-lookaside auto;
/* Path to ISC DLV key */
bindkeys-file "/etc/named.iscdlv.key";
managed-keys-directory "/var/named/dynamic";
pid-file "/run/named/named.pid";
session-keyfile "/run/named/session.key";
};
logging {
channel default_debug {
file "data/named.run";
severity dynamic;
};
};
zone "." IN {
type hint;
file "named.ca";
};
zone "dynavio.coop" IN {
type master;
file "fwd.dynavio.coop.db";
allow-update { none; };
};
zone "38.168.192.in-addr.arpa" IN {
type master;
file "38.168.192.db";
allow-update { none; };
};
include "/etc/named.rfc1912.zones";
include "/etc/named.root.key";
Archivo fwd.dynavio.coop.db:
$TTL 86400
@ IN SOA primary.dynavio.coop. root.dynavio.coop. (
2014112511 ;Serial
3600 ;Refresh
1800 ;Retry
604800 ;Expire
86400 ;MinimumTTL
)
;Name Server Information
@ IN NS primary.dynavio.coop.
;IP Address of Name Server
primary IN A 192.168.38.8
;Mail exchanger
dynavio.coop. IN MX 10 mail.dynavio.coop.
;A - Record HostName To Ip Address
www IN A 192.168.38.100
mail IN A 192.168.38.150
;CNAME record
ftp IN CNAME www.dynavio.coop.
Archivo 38.168.192.db:
$TTL 86400
@ IN SOA primary.dynavio.coop. root.dynavio.coop. (
2014112511 ;Serial
3600 ;Refresh
1800 ;Retry
604800 ;Expire
86400 ;Minimum TTL
)
;Name Server Information
@ IN NS primary.dynavio.coop.
;Reverse lookup for Name Server
8 IN PTR primary.dynavio.coop.
;PTR Record IP address to HostName
100 IN PTR www.dynavio.coop.
150 IN PTR mail.dynavio.coop.
El comando de excavación devuelve:
; <<>> DiG 9.9.4-RedHat-9.9.4-18.el7_1.5 <<>> www.dynavio.coop
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 43498
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0
;; QUESTION SECTION:
;www.dynavio.coop. IN A
;; AUTHORITY SECTION:
coop. 1272 IN SOA coop1.dyntld.net. support.nic.coop. 2015099691 900 1800 6048000 3600
;; Query time: 3 msec
;; SERVER: 192.168.38.1#53(192.168.38.1)
;; WHEN: Mon Dec 07 16:36:55 EET 2015
;; MSG SIZE rcvd: 98
Actualizar:Parece que el problema es que /etc/resolv.confse sobrescribe cada vez que se reinicia el administrador de red. Actualizaré esto nuevamente más tarde, cuando pueda obtener el archivo if-cfg.
Respuesta1
Cargué tu zona en mi caja de prueba y me funciona;
[test@server ~]# dig www.dynavio.coop
; <<>> DiG 9.8.2rc1-RedHat-9.8.2-0.37.rc1.el6_7.4 <<>> www.dynavio.coop
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 23763
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 1
;; QUESTION SECTION:
;www.dynavio.coop. IN A
;; ANSWER SECTION:
www.dynavio.coop. 86400 IN A 192.168.38.100
;; AUTHORITY SECTION:
dynavio.coop. 86400 IN NS ns0.test.int.
;; ADDITIONAL SECTION:
ns0.test.int. 3600 IN A 172.16.0.2
;; Query time: 0 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Tue Dec 8 20:30:27 2015
;; MSG SIZE rcvd: 92
Tenga en cuenta que tuve que usar mis propias NSdirecciones ya que estoy configurado para una subred diferente, etc., y no tengo claves DNS configuradas, por lo que no puedo probarlas.
Un par de cosas para comprobar;
¿Qué tienes configurado? /etc/resolv.confDeberías tener una línea como esta; nameserver 127.0.0.1para que su caja solicite búsquedas de NS. Sospecho que su máquina está configurada para usar otro servidor DNS.
¿Cuál es la dirección IP de su cuadro? Tuvo un error en su pregunta original al primarytener una dirección inversa de .8y una dirección directa de.103