DNS Fails intermittently

Connection issues, drop outs or speed related faults for ADSL and ADSL2+ services
angelos
Exetel Staff
Posts: 1068
Joined: Fri Nov 09, 2012 11:22 pm
Location: Australia

Re: DNS Fails intermittently

Post by angelos » Fri Mar 21, 2014 1:44 am

Hi danielp,

We have made a few changes as thejeg advised and now routers do not obtain 58.96.1.28 anymore so would be somewhat pointless testing it further.

You should try setting your router to 220.233.0.4/3

SysAdmin

Re: DNS Fails intermittently

Post by SysAdmin » Fri Mar 21, 2014 1:30 pm

In approximately 10-15 minutes I'll be changing .3 to the new setup as no one who has used .4 has told of any issues (but has indicated an improvement of services).

Normally we wouldn't do this with so little notice (and at this time) but I'm sure we all agree that having working DNS services over the weekend is a Good Thing[tm].

There may be a little bit of short-lived wibbliness as we swap servers.

Andrew

SysAdmin

Re: DNS Fails intermittently

Post by SysAdmin » Fri Mar 21, 2014 1:48 pm

And... done. :)

Andrew

thejeg

Re: DNS Fails intermittently

Post by thejeg » Fri Mar 21, 2014 4:20 pm

danielp wrote:Do all customers really need to reset their modem (why???)? I heard many neighbours using the service complaining that their service wasn't working well. Some where fairly irate.
As I indicated in my previous post, those who are still having issues should reset their routers and reconfigure for the changes to take effect!

SysAdmin

Re: DNS Fails intermittently

Post by SysAdmin » Fri Mar 21, 2014 5:06 pm

The new servers appear to be going well.

If this continues over the weekend, this'll mean the end of "bind" at Exetel.

Please note that if you are using 58.96.1.28, please stop and follow Theje's instructions.

This server has not, as yet, been dealt with.

Andrew

Dazzled
Volunteer Site Admin
Posts: 6003
Joined: Mon Nov 13, 2006 1:16 pm
Location: Sydney

Re: DNS Fails intermittently

Post by Dazzled » Fri Mar 21, 2014 6:04 pm

What replaces BIND, Andrew?

SysAdmin

Re: DNS Fails intermittently

Post by SysAdmin » Mon Mar 24, 2014 1:15 pm

Dazzled wrote:What replaces BIND, Andrew?
Currently we've doubled the cores (and have faster ones), quadrupled
the ram and changed software to unbound.

It's the software change that did it. The resource increase can't hurt
but changing software not only solved the problems I was (finally) able
to replicate (that appeared to be in the same class as those reported) but
also brought the load down further (takes half the userspace CPU of bind).

My apologies to one and all that it took as long as it did to fix. Ditching
bind was... not obvious until I could replicate the faults and watch it in
action.

Andrew

Lavec
Posts: 22
Joined: Tue Mar 25, 2008 1:00 pm
Location: Newcastle

Re: DNS Fails intermittently

Post by Lavec » Fri Apr 11, 2014 10:01 am

It occurred to me today that I have not noticed any DNS issues over the last couple of weeks. I'm very pleased this has finally been fixed but also very disappointed it took so long, and that Exetel (and fanboys) kept denying there was any issues on their end. I was so close to moving to another provider.

Anyway apology excepted but please do not let this happen again.

thejeg

Re: DNS Fails intermittently

Post by thejeg » Fri Apr 11, 2014 10:18 am

Lavec wrote:It occurred to me today that I have not noticed any DNS issues over the last couple of weeks. I'm very pleased this has finally been fixed but also very disappointed it took so long, and that Exetel (and fanboys) kept denying there was any issues on their end. I was so close to moving to another provider.

Anyway apology excepted but please do not let this happen again.
We are extremely sorry for the time it took to resolve the issue and would like to thank you for your understanding on this.

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