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  #1  
Old 21st August 2009, 00:18
moglia moglia is offline
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Thumbs down MYDNS critical problems.

Some of my clients ask for me about dns
sites going offline im woking using cname.

See My dns template: (using it to create domains)
------------------------------------------------
[ZONE]
origin={DOMAIN}.
ns=ns1.ispconfiginslated.com.
mbox=hostmaster.ispconfiginslated.com.
refresh=28800
retry=7200
expire=604800
minimum=86400
ttl=86400

[DNS_RECORDS]
CNAME|{DOMAIN}.|ispconfiginslated.com.|0|86400
CNAME|www|delta.ispconfiginslated.com.|0|86400
CNAME|mail|mail.ispconfiginslated.com.|0|86400
CNAME|mail2|mail2.ispconfiginslated.com.|0|86400
CNAME|smtp|smtp.ispconfiginslated.com.|0|86400
CNAME|pop|pop.ispconfiginslated.com.|0|86400
CNAME|imap|imap.ispconfiginslated.com.|0|86400
CNAME|webmail|webmail.ispconfiginslated.com.|0|864 00
CNAME|*.|*.ispconfiginslated.com.|0|86400
NS|{DOMAIN}.|ns1.ispconfiginslated.com.|0|86400
NS|{DOMAIN}.|ns2.ispconfiginslated.com.|0|86400
MX|{DOMAIN}.|mail.ispconfiginslated.com.|10|86400
MX|{DOMAIN}.|mail2.ispconfiginslated.com.|20|86400
TXT||v=spf1 mx ptr -all|0|86400
------------------------------------------------

MX queries with host comand show-me a strange response:

delta:/# host -t MX domain.com.br
domain.com.br is an alias for ispconfiginslated.com.
ispconfiginslated.com is an alias for delta.ispconfiginslated.com.

Normally expected response is:

delta:/# host -t MX domain.com.br
ispconfiginslated.com mail is handled by 10 delta.ispconfiginslated.com.

don´t showing "handled by"


I don´t no if some isp dns servers arround the globe can see or not make correct queries and cache of my ispconfig instalation using mydns. (opendns allways response)

Im using standard instalation not changed anyting (only loging for testing).

I donpt have idea if DNS stops or not. i maked a fine tune of mysql and keep monitoting queries is under 80% or limit conection with database is not the problem.

I dont know mydns and for me at this moment i can trust on this server.
I used powerdns over years and appers more reliable.

My intentions is keep using mydns to help on ispconfig 3 tests, but my clients it´s nervous because some times some of isp lost dns information and time researched queries and domain appers off-line for clients for couple of locations.

I will be swiched to bind some critical domains to another machine to burn off the fire. clients can be wait.

Till how change mydns to powerdns, i make link on plugins enabled how need to replace mydns for powerdns?

svn_updates can be affect powerdns plugin if enabled?

Please anyone can help me to find a definitive solution for this case (like change a cname for ip´s or other sugestions)?


Im losting some nights for find a solution for this case, i need trust on ispconfig and my desire is not swith to proprietary software to resolve this issues. problems keep for 2 weeks i don´t have more any idea to do.

Antecipated regards 4 any help.
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  #2  
Old 21st August 2009, 08:19
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Default also add me

add me also,

i have exactly same problem, website repeatedly saying not found for many clients.

though works fine on open dns

whats wrong, now and then its going on and off
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  #3  
Old 21st August 2009, 13:50
till till is online now
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Not able to reproduce this and we are running our dns servers for years on mydns. Mkae sure that you run the latest mydns-ng version.

If you have any special mydns-ng load problems, you should ask the mydns developers:

http://sourceforge.net/projects/mydns-ng/

Quote:
Im losting some nights for find a solution for this case, i need trust on ispconfig and my desire is not swith to proprietary software to resolve this issues.
And why did you not contact the pople that have written the software that you have problems with? MyDNS is not written by us, same for the apache webserver, the php programming language etc. If you have a very specific problem with a software, you should contact the developers of this software:

http://sourceforge.net/projects/mydns-ng/

This is not a ispconfig specific problem as ispconfig is just adding the records to the mysql database.
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Get ISPConfig support and the ISPConfig 3 manual from ispconfig.org.

Last edited by till; 21st August 2009 at 13:54.
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  #4  
Old 21st August 2009, 14:30
moglia moglia is offline
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Exclamation

Quote:
Originally Posted by till View Post
Not able to reproduce this and we are running our dns servers for years on mydns. Mkae sure that you run the latest mydns-ng version.
Yes i have the latest version (i updated to latest on debian tutorial on svn):

delta:~# mydns --version
mydns (mydns) 1.2.8.27 (MySQL 5.0.51a)

Copyright (C) 2002-2005 Don Moore 2007-2008 Howard Wilkinson
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

Quote:
Originally Posted by till View Post
If you have any special mydns-ng load problems, you should ask the mydns developers:
No have many domains configurated (66 domains) and one reverse high TTL 8600

mysql> select count(*) from dns_soa;
+----------+
| count(*) |
+----------+
| 67 |
+----------+
1 row in set (0.00 sec)



Quote:
Originally Posted by till View Post
And why did you not contact the pople that have written the software that you have problems with? MyDNS is not written by us, same for the apache webserver, the php programming language etc. If you have a very specific problem with a software, you should contact the developers of this software:

http://sourceforge.net/projects/mydns-ng/

This is not a ispconfig specific problem as ispconfig is just adding the records to the mysql database.
I presume use mydns and ispconfig 3 standards configurations is ready to use.
Yes, i agree but mydns is part of ispconfig and more then one people have the same problem, and it´s reported why not give another dns options? (powerdns, bind) my vote is swich to powerdns.



Powerdns all ready packaged on debian:
pdns-server - extremely powerful and versatile nameserver
pdns-backend-mysql - generic MySQL backend for PowerDNS

I try make wildcards for example don´t work.

I tried enable powerdns on ispconfig, how do it?

You can share your experience with us, how you configure your dns records is a A or CNAME whats your TTL and another parameters you use. your database configuration.

Make ispconfig better sharing experiences more people use it and increment comunity arround. because some people stay at ispconfig2 and not swich to ispconfig3.
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  #5  
Old 21st August 2009, 14:41
till till is online now
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Quote:
I presume use mydns and ispconfig 3 standards configurations is ready to use.
I use it and many others use it successfully without problems. And the other poster in this thread has a different problem, he does not know how to create an dns a record (see his other threads).

Quote:
Yes, i agree but mydns is part of ispconfig and more then one people have the same problem, and it´s reported why not give another dns options? (powerdns, bind) my vote is swich to powerdns.
Feel free to write plugins for ISPConfig for any software you like. If they work we will add them to the core system. mydns works great for us and on a few thousand other installations. So if it does not work on yours, we can try to find out were the problem in your setup is. The ispconfig default setups works for many many poeple, so you can assume its correct and working.

Quote:
I tried enable powerdns on ispconfig, how do it?
Take a look in the plugin code. All information that is available at the moment is in this file. The plugin has not been tested on a production system.

Quote:
You can share your experience with us, how you configure your dns records is a A or CNAME whats your TTL and another parameters you use. your database configuration.
I use mostly A-Records. Create a record with the dns wizard and the default template and you have exactly the ones that i use.

Quote:
Make ispconfig better sharing experiences more people use it and increment comunity arround. because some people stay at ispconfig2 and not swich to ispconfig3.
And what do you think that I'am doing here in more then 18 000 posts a few hours per day ...
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Last edited by till; 21st August 2009 at 15:02.
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  #6  
Old 21st August 2009, 14:45
till till is online now
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Regarding the detailed mydns.conf settings that I use:

See install/tpl/mydns.conf.master in the ispconfig installer tar.gz file.
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  #7  
Old 21st August 2009, 15:24
moglia moglia is offline
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Exclamation I see

it´s the same of my instalation standard configuration.

user = nobody # Run with the permissions of this user
group = nogroup # Run with the permissions of this group
listen = * # Listen on these addresses ('*' for all)
no-listen = IP1,IP2 # Do not listen on these addresses

timeout = 240 # Number of seconds after which queries time out

My only changes, before confirm problem.

you can share your TTL, MIN, EXP and other time settings?

Last edited by moglia; 21st August 2009 at 15:24. Reason: ip
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  #8  
Old 21st August 2009, 15:32
till till is online now
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All defaults like they are set by ispconfig.
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  #9  
Old 21st August 2009, 15:35
till till is online now
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You should test your dns records with dig. Test all dns severs independantly like:

dig ns1.myserver.com domain.tld
dig ns2.myserver.com domain.tld

The problem you describe can e.g. happen if not all dns servers are in sync. So that a client gets a correct record from one server but on the next query he gats a record from another dns server which is either incorrect or does not know the domain. To the end user it looks like dns resolutution is sometimes not working while it is working correctly on one server and failing completely on another server.

Also make sure that all dns servers for the domains are listed correctly at the registry and also show up correctly in the whois record.
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  #10  
Old 21st August 2009, 15:45
moglia moglia is offline
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Exclamation at this moment i have one dns server

2 ip address is on same ispconfig machine.

Queries return strange results:

delta:/etc# host -t NS domain.com
domain.com is an alias for delta.domain.com.

devsrv:~# host -t MX domain.com
domain.com is an alias for delta.domain.com.


not like:

devsrv:~# host -t NS domain.com.br
visar.com.br name server ns2.domain.com.br.
visar.com.br name server ns1.domain.com.br.

delta:/etc# host -t MX domain.com.br
domain.com.br mail is handled by 10 julieta.domain.com.br.
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