Eu tentei fazer um servidor DNS, mas quando executo o comando dig o servidor não retorna nada. Não tive nenhuma experiência anterior e estou apenas seguindo este tutorial:http://www.itzgeek.com/how-tos/linux/centos-how-tos/configure-dns-bind-server-on-centos-7-rhel-7.html.
arquivo nomeado.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";
Arquivo 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.
Arquivo 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.
O comando Dig retorna:
; <<>> 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
Atualizar:Parece que o problema é /etc/resolv.confser substituído sempre que o gerenciador de rede é reiniciado. Atualizarei isso novamente mais tarde, quando conseguir obter o arquivo if-cfg.
Responder1
Carreguei sua zona em minha caixa de teste e funcionou para mim;
[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
Observe que tive que usar meus próprios NSendereços, pois estou configurado para uma sub-rede diferente, etc., e não tenho chaves DNS configuradas, por isso não posso testar isso.
Algumas coisas para verificar;
O que você definiu? /etc/resolv.confVocê deveria ter uma linha como esta; nameserver 127.0.0.1para que sua caixa solicite pesquisas de NS, suspeito que sua máquina esteja configurada para usar outro servidor DNS.
Qual é o endereço IP da sua caixa - você teve um erro na sua pergunta original ao primaryter um endereço reverso .8e um encaminhamento de.103