Custom-DNS Standard-Einträge

swoop · Jun 27th 2018

Hallo zusammen,

ich habe übers Wochenende einen neuen Server installiert, der alte muss endlich ersetzt werden.

Debian 9.4 Stretch

i-Mscp Git 1.5.x

PHP 5.6.36

Nun teste ich gerade den DNS-Server (bind9). Dabei bin ich auf ein Problem gestoßen, das die Custom-DNS-Einträge betrifft.

Mit großer Überraschung habe ich festgestellt, dass die MX-, bzw Mail-Einträge per Konpfdruck entfernt werden können. Das ist genial.

Zunächst muss ich erwähnen, dass ich die Templates (db.tpl und db_sub.tpl) angepasst habe, um die CNAME-Einträge für WWW raus zu bekommen. Diese sind jetzt „normale“ A-Eingräge. Das funktioniert auch so wie es soll, solange ich den WWW-Eintrag nicht anpassen muss.

Hier meine angepassten Templates

Code

root@www2:/etc/imscp/bind/parts# cat db.tpl
$TTL 3H
$ORIGIN {DOMAIN_NAME}.
@ IN SOA ns1.{DOMAIN_NAME}. hostmaster.{DOMAIN_NAME}. (
{TIMESTAMP}; Serial
3H; Refresh
1H; Retry
2W; Expire
1H; Minimum TTL
)
; dmn NS RECORD entry BEGIN
@ IN NS {NS_NAME}
; dmn NS RECORD entry ENDING
@ IN {IP_TYPE} {DOMAIN_IP}
; dmn NS GLUE RECORD entry BEGIN
{NS_NAME} IN {NS_IP_TYPE} {NS_IP}
; dmn NS GLUE RECORD entry ENDING
www IN {IP_TYPE} {DOMAIN_IP}
ftp IN {IP_TYPE} {DOMAIN_IP}
; dmn MAIL entry BEGIN
@ IN MX 10 mail
@ IN TXT "v=spf1 a mx -all"
mail IN {BASE_SERVER_IP_TYPE} {BASE_SERVER_IP}
imap IN {BASE_SERVER_IP_TYPE} {BASE_SERVER_IP}
pop IN {BASE_SERVER_IP_TYPE} {BASE_SERVER_IP}
pop3 IN {BASE_SERVER_IP_TYPE} {BASE_SERVER_IP}
relay IN {BASE_SERVER_IP_TYPE} {BASE_SERVER_IP}
smtp IN {BASE_SERVER_IP_TYPE} {BASE_SERVER_IP}
; dmn MAIL entry ENDING
; sub entries BEGIN
; sub [{SUBDOMAIN_NAME}] entry BEGIN
; sub [{SUBDOMAIN_NAME}] entry ENDING
; sub entries ENDING
$ORIGIN {DOMAIN_NAME}.
; custom DNS entries BEGIN
; custom DNS entries ENDING
root@www2:/etc/imscp/bind/parts# cat db_sub.tpl
; sub [{SUBDOMAIN_NAME}] entry BEGIN
$ORIGIN {SUBDOMAIN_NAME}.
; sub MAIL entry BEGIN
@ IN MX 10 mail
@ IN TXT "v=spf1 include:{DOMAIN_NAME} -all"
mail IN {BASE_SERVER_IP_TYPE} {BASE_SERVER_IP}
imap IN {BASE_SERVER_IP_TYPE} {BASE_SERVER_IP}
pop IN {BASE_SERVER_IP_TYPE} {BASE_SERVER_IP}
pop3 IN {BASE_SERVER_IP_TYPE} {BASE_SERVER_IP}
relay IN {BASE_SERVER_IP_TYPE} {BASE_SERVER_IP}
smtp IN {BASE_SERVER_IP_TYPE} {BASE_SERVER_IP}
; sub MAIL entry ENDING
@ IN {IP_TYPE} {DOMAIN_IP}
; sub OPTIONAL entries BEGIN
www IN {IP_TYPE} {DOMAIN_IP}
ftp IN {IP_TYPE} {DOMAIN_IP}
; sub OPTIONAL entries ENDING
; sub [{SUBDOMAIN_NAME}] entry ENDING

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Nun muss aber, der einen oder anderen Kunden, den Standard WWW-Eintrag ändern. Ich bin zwar auf den Listener „10_named_override_default_rr.pl“ gestoßen, aber der löscht ja nur den vorhandenen Default CNAME-Eintrag.

Ich habe nun versucht den Listener anzupassen aber da ich ein PHP-Newbee bin, beiße ich im Moment auf Granit.

Kann mir bitte jemand sagen wie ich die "10_named_override_default_rr.pl" umschreiben muss, damit der WWW-Eintrag als A-Eintrag gelöscht wird?

Danke

**Nuxwin** · Jun 27th 2018

swoop

Before giving you an answer, I want be sure to understand well.

You have modified the default i-MSCP's bind9 DNS templates to replace the default www CNAME resource records by A (or AAAA for an IPv6) resource records
However, you still want use the 10_named_override_default_rr.pl i-MSCP listener file which in your use case should also remove the default www A (or AAAA for an IPv6) resource record

I understdood well

BTW: Why did you turned the default www CNAME resource record into into A (or AAAA for an IPv6) resource record

Quote from swoop

Nun muss aber, der einen oder anderen Kunden, den Standard WWW-Eintrag ändern. Ich bin zwar auf den Listener „10_named_override_default_rr.pl“ gestoßen, aber der löscht ja nur den vorhandenen Default CNAME-Eintrag.

Ich habe nun versucht den Listener anzupassen aber da ich ein PHP-Newbee bin, beiße ich im Moment auf Granit.

i-MSCP listener files are written in Perl, not PHP

swoop · Jun 27th 2018

hello Nuxwin,

thanx for your fast answer.

1. Yes, you understand it right.

2. If you know a better/easier way, please let me know

I want to be able to directly edit a IP-Address, not thru a CNAME. It's an Entry more if internaly.

I've tested 10_named_override_default_rr.pl without changing anything but now i have 3 WWW entries in my zonefile.

One created by the template,

one created by me,

and one created by 10_named_override_default_rr.pl

Zonefile looks like this

Code

root@www2:/etc/imscp/bind/working# cat domain.tld.db
$TTL 3H
$ORIGIN domain.tld.
domain.tld. IN SOA ns1.domain.tld. hostmaster.domain.tld. (
2018062714; Serial
3H; Refresh
1H; Retry
2W; Expire
1H; Minimum TTL
)
domain.tld. IN NS ns1
domain.tld. IN NS ns2
domain.tld. IN A 10.11.15.97
ns1.domain.tld. IN A 10.11.15.97
ns2.domain.tld. IN A 10.11.15.98
www.domain.tld. IN A 10.11.15.97
ftp.domain.tld. IN A 10.11.15.97
domain.tld. IN MX 10 mail
domain.tld. IN TXT "v=spf1 a mx -all"
mail.domain.tld. IN A 10.11.15.97
imap.domain.tld. IN A 10.11.15.97
pop.domain.tld. IN A 10.11.15.97
pop3.domain.tld. IN A 10.11.15.97
relay.domain.tld. IN A 10.11.15.97
smtp.domain.tld. IN A 10.11.15.97
; sub entries BEGIN
; sub [{SUBDOMAIN_NAME}] entry BEGIN
; sub [{SUBDOMAIN_NAME}] entry ENDING
; sub entries ENDING
$ORIGIN domain.tld.
; custom DNS entries BEGIN
www.domain.tld. 3600 IN A 10.11.15.104
; custom DNS entries ENDING
www.domain.tld. IN CNAME domain.tld.

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Sorry, i mean perl. Ether way i am not a programmer.

**Nuxwin** · Jun 28th 2018

Quote from swoop

I've tested 10_named_override_default_rr.pl without changing anything but now i have 3 WWW entries in my zonefile.

One created by the template,

one created by me,

and one created by 10_named_override_default_rr.pl

To resume, you want only that entry: www.domain.tld. 3600 IN A 10.11.15.104

If yes, give me some time to send you a modified version of the listener for such use case.

swoop · Jun 28th 2018

Good Morning Nuxwin,

yes, you are absolutly right.

thank you very much

Good work by th way.

**Nuxwin** · Jun 28th 2018

swoop

Can you give a try with the version provided below? You will surely have to trigger i-MSCP reconfiguration: perl /var/www/imscp/engine/setup/imscp-reconfigure -danv to make changes effectives.

Let's me know if that version solve your specific use case. It is of course assumed here that www rr are expected as A (or AAAA) rr according changes made in the bind9 DNS templates.

swoop · Jun 28th 2018

thans for the fast reply.

after i've done as described the zonefile looks like this

Code

root@www2:/etc/imscp/bind/working# cat domain.tld.db
$TTL 3H
$ORIGIN domain.tld.
@ IN SOA ns1.domain.tld. hostmaster.domain.tld. (
2018062804; Serial
3H; Refresh
1H; Retry
2W; Expire
1H; Minimum TTL
)
@ IN NS ns1
@ IN NS ns2
@ IN A 10.11.15.97
ns1 IN A 10.11.15.97
ns2 IN A 10.11.15.98
www IN A 10.11.15.97
ftp IN A 10.11.15.97
@ IN MX 10 mail
@ IN TXT "v=spf1 a mx -all"
mail IN A 10.11.15.97
imap IN A 10.11.15.97
pop IN A 10.11.15.97
pop3 IN A 10.11.15.97
relay IN A 10.11.15.97
smtp IN A 10.11.15.97
; sub entries BEGIN
; sub [hilfe.domain.tld] entry BEGIN
$ORIGIN hilfe.domain.tld.
@ IN MX 10 mail
@ IN TXT "v=spf1 include:domain.tld -all"
mail IN A 10.11.15.97
imap IN A 10.11.15.97
pop IN A 10.11.15.97
pop3 IN A 10.11.15.97
relay IN A 10.11.15.97
smtp IN A 10.11.15.97
@ IN A 10.11.15.97
; sub OPTIONAL entries BEGIN
www IN A 10.11.15.97
ftp IN A 10.11.15.97
; sub OPTIONAL entries ENDING
; sub [hilfe.domain.tld] entry ENDING
; sub [{SUBDOMAIN_NAME}] entry BEGIN
; sub [{SUBDOMAIN_NAME}] entry ENDING
; sub entries ENDING
$ORIGIN domain.tld.
; custom DNS entries BEGIN
; custom DNS entries ENDING

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after i added my own WWW entry, the zonefile looks like this

Code

root@www2:/etc/imscp/bind/working# cat domain.tld.db
$TTL 3H
$ORIGIN domain.tld.
domain.tld. IN SOA ns1.domain.tld. hostmaster.domain.tld. (
2018062801; Serial
3H; Refresh
1H; Retry
2W; Expire
1H; Minimum TTL
)
domain.tld. IN NS ns1
domain.tld. IN NS ns2
domain.tld. IN A 10.11.15.97
ns1.domain.tld. IN A 10.11.15.97
ns2.domain.tld. IN A 10.11.15.98
www.domain.tld. IN A 10.11.15.97
ftp.domain.tld. IN A 10.11.15.97
domain.tld. IN MX 10 mail
domain.tld. IN TXT "v=spf1 a mx -all"
mail.domain.tld. IN A 10.11.15.97
imap.domain.tld. IN A 10.11.15.97
pop.domain.tld. IN A 10.11.15.97
pop3.domain.tld. IN A 10.11.15.97
relay.domain.tld. IN A 10.11.15.97
smtp.domain.tld. IN A 10.11.15.97
; sub entries BEGIN
; sub [hilfe.domain.tld] entry BEGIN
$ORIGIN hilfe.domain.tld.
hilfe.domain.tld. IN MX 10 mail
hilfe.domain.tld. IN TXT "v=spf1 include:domain.tld -all"
mail.hilfe.domain.tld. IN A 10.11.15.97
imap.hilfe.domain.tld. IN A 10.11.15.97
pop.hilfe.domain.tld. IN A 10.11.15.97
pop3.hilfe.domain.tld. IN A 10.11.15.97
relay.hilfe.domain.tld. IN A 10.11.15.97
smtp.hilfe.domain.tld. IN A 10.11.15.97
hilfe.domain.tld. IN A 10.11.15.97
; sub OPTIONAL entries BEGIN
www.hilfe.domain.tld. IN A 10.11.15.97
ftp.hilfe.domain.tld. IN A 10.11.15.97
; sub OPTIONAL entries ENDING
; sub [hilfe.domain.tld] entry ENDING
; sub [{SUBDOMAIN_NAME}] entry BEGIN
; sub [{SUBDOMAIN_NAME}] entry ENDING
; sub entries ENDING
$ORIGIN domain.tld.
; custom DNS entries BEGIN
www.domain.tld. 3600 IN A 10.11.15.104
; custom DNS entries ENDING

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it's working partly, the original WWW entry was not deleted, and i get no error-message. Thats grat.

**Nuxwin** · Jun 28th 2018

swoop

I'll provide you with a revised version ASAP.

swoop · Jun 28th 2018

thank you for your help.

swoop · Jul 5th 2018

hello Nuxwin,

is there light at the end of the tunnel?

til you come with a genius soltion for my problem, is there a way to edit/change DNS-settings on commandline, so i can go live with my new server?

or should i wait until the final solution?

thanks

Custom-DNS Standard-Einträge

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