Configurs DNS.

[jernis]

I now have 2 installations of IspConfig on 2 different machines on the same subnet.

now i would like to set up them as dns1 and dns1.

how do i do that?

i dont understand the relations beteen master and slave dns inside ipsconfig
do i :

server1 = s1, server2 = s2

What do i enter inside Management>Default DNS NS1, NS2 ?
(is if for server1 : ns1 = s1 ip, ns2 = s2 ip. Making server1 my main dns)
(and for server2 : ns1 = s1 ip, ns2 = s2 ip. using s2 as secondary dns)

and what do i do inside the DNS management?
New master ? (is this my s1?) (if yes is the IP my s1 ip ?)
New slave ? (is this my s2?) (whats the DNS-Master IP: ?)

Im slightly comfused. =)

looking forward to an answer.

/ Daniel.

[till]

DNS Master / Slave replication is handled by the bind zone-transfer feature.

1) Add a master record in the dns-manager of your primary dns server. The IP you enter here is the ip where your domain shall point to.
2) Add a slave record to your secondary dns-server, enter as ip the ip of your primary dns server.

You see, its really simple

[jernis]

What do i enter inside Management>Default DNS NS1, NS2 ?

>Add a master record in the dns-manager of your primary dns server.

So on Server 1 (the master) I klick the
"New Master" then adds SOA "mydomain.com" and
adds the IP (my ispconfig 1 server external ip)

and on Server 2 (the Slave) i klick the "New Slave"
adds the Domain "mydomain.com" and the Server 1 Ip?

Is this correct ?

regards / Daniel.

[till]

Yes, thats correct.

[jernis]

The server 1 (master) is answering nicely on mynewdomain.com but the server 2 (slave) cant find the mynewdomain.com if i ask it ?

[till]

Originally Posted by jernis

The server 1 (master) is answering nicely on mynewdomain.com but the server 2 (slave) cant find the mynewdomain.com if i ask it ?

1) How long have you waited until you queried the second server? It may take some time until bind synchronizes the settings.

2) Maybe zone transfers are disabled on your primary server. Check the logfiles for errors or failed zone transfers.

[falko]

Originally Posted by jernis

The server 1 (master) is answering nicely on mynewdomain.com but the server 2 (slave) cant find the mynewdomain.com if i ask it ?

Even if you run

dig @localhost mybewdomain.com

on your second server?

[jernis]

On server 1: (Is master)

# dig @localhost mydomain.com

; <<>> DiG 9.3.1 <<>> @localhost mydomain.com
; (1 server found)
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 47190
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 0

;; QUESTION SECTION:
;mydomain.com. IN A

;; ANSWER SECTION:
mydomain.com. 86400 IN A 83.xxx.xxx.50

;; AUTHORITY SECTION:
mydomain.com. 86400 IN NS slave.dns.server.name.
mydomain.com. 86400 IN NS master.dns.server.name.

;; Query time: 0 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Thu Sep 22 20:53:35 2005
;; MSG SIZE rcvd: 93


on server 2: (Is slave)

# dig @localhost mydomain.com

; <<>> DiG 9.3.1 <<>> @localhost mydomain.com
; (1 server found)
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 62342
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;mydomain.com. IN A

;; Query time: 0 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Thu Sep 22 20:54:49 2005
;; MSG SIZE rcvd: 27


The master knows about the domain but the slave has no idea what im talking about.

[jernis]

Found this insde the slave server :

Sep 22 19:34:16 slaveserver1 named[13220]: zone mydomain.com/IN: Transfer started.
Sep 22 19:34:16 slaveserver1 named[13220]: transfer of 'mydomain.com/IN' from 83.xxx.xxx.52#53: connected using 10.xxx.xxx.53#32793
Sep 22 19:34:16 slaveserver1 named[13220]: dumping master file: tmp-BSgUR0NWsi: open: permission denied
Sep 22 19:34:16 slaveserver1 named[13220]: transfer of 'mydomain.com/IN' from 83.xxx.xxx.52#53: failed while receiving responses: permission denied
Sep 22 19:34:16 slaveserver1 named[13220]: transfer of 'mydomain.com/IN' from 83.xxx.xxx.52#53: end of transfer

where is it permission denied?

[falko]

Is named allowed to write to the directory where the zone files should be stored? It must be somewhere like /var/named, /var/lib/named, etc.