Re: [CentOS] OT: free DNS service?
On Mon, Jan 18, 2010 at 1:55 PM, Drew Weaver wrote: > Hoping MyDomain.com will lower the TTL from 3600 to 300 for a few > days, so I can do the testing/migration I need to do a lot faster. > > Even if your DNS provider lowers your TTL to 300 it doesn't mean other > peoples servers (like ours) are going to expire their cache that quickly. Drew: MyDomain.com (my DNS provider for 7 years now) says they cannot or will not lower the TTL. I now believe they are the same company as Dotster and ZoneEdit. So, the 3600 TTL I will need to live with, and I will try to get in here in the morning, about 3 A.M., to try this again. Hopefully I can test on the other server, after I switch the "A" record, wait one hour, check the authoritative name server to be sure it points to the other server and then flush the DNS cache in my IPCopbox.Lanny ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] OT: free DNS service?
I believe I now know how to flush that cache and will do that, before I change the "A" record to point to the IP of the new server again. Hoping MyDomain.com will lower the TTL from 3600 to 300 for a few days, so I can do the testing/migration I need to do a lot faster. - Even if your DNS provider lowers your TTL to 300 it doesn't mean other peoples servers (like ours) are going to expire their cache that quickly. thanks, -Drew ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] OT: free DNS service?
On Mon, Jan 18, 2010 at 10:39 AM, R-Elists wrote: >> I have been using a free DNS service for the past seven (7) years. >> This morning, at 4 A.M., , I changed the "A" record for one >> of my web sites, to point to an IP address on a different >> server, so I could test. After watching the TTL count down >> from 3600 to zero, with the "dig" command, it then reset to >> 3600, but still resolved to the >> original IP address. :-) I set the "A" record back to the original >> IP address and filed a Support Ticket with that company, > there are "many" other factors involved in DNS and it's distribution & > usage... > > one thing is that virtually every machine has it's own resolver and > typically a cache of some sort... > until the cache in the resolver on that system is updated, changed, flushed, > refreshed, whatever etc... it doesn't need to go get an update... Yes. When I got the syntax correct, for the "dig" command to check the authoritative DNS servers, I discovered the "dig" command I first used, was checking the DNS cache in my IPCop Firewall/Router box I believe I now know how to flush that cache and will do that, before I change the "A" record to point to the IP of the new server again. Hoping MyDomain.com will lower the TTL from 3600 to 300 for a few days, so I can do the testing/migration I need to do a lot faster. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] OT: free DNS service?
From: R-Elists > > I have been using a free DNS service for the past seven (7) years. > > This morning, at 4 A.M., , I changed the "A" record for one > > of my web sites, to point to an IP address on a different > > server, so I could test. After watching the TTL count down > > from 3600 to zero, with the "dig" command, it then reset to > > 3600, but still resolved to the > > original IP address. :-) I set the "A" record back to the original > > IP address and filed a Support Ticket with that company, but > > if they cannot get this to work properly again, I need a new > > DNS service that is free. Recommendations? (BTW, the Domain > > is registered with GoDaddy, but not hosted there, so it > > appears I cannot use their "Total DNS" service). TIA! > so, when you make a dns change properly on a serving system, it still has to > get distributed and that doesnt mean that every machine that has a resolver > or cache has changed at that instant... it can take more time than you > expecetd... Indeed; there is a TTL parameter. If you want the changes to be propagated 'fast', you set the TTL to a low duration. But DNS caches can bypass it if they choose to... JD ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] OT: free DNS service?
> > I have been using a free DNS service for the past seven (7) years. > This morning, at 4 A.M., , I changed the "A" record for one > of my web sites, to point to an IP address on a different > server, so I could test. After watching the TTL count down > from 3600 to zero, with the "dig" command, it then reset to > 3600, but still resolved to the > original IP address. :-) I set the "A" record back to the original > IP address and filed a Support Ticket with that company, but > if they cannot get this to work properly again, I need a new > DNS service that is free. Recommendations? (BTW, the Domain > is registered with GoDaddy, but not hosted there, so it > appears I cannot use their "Total DNS" service). TIA! > > Lanny Lanny, there are "many" other factors involved in DNS and it's distribution & usage... one thing is that virtually every machine has it's own resolver and typically a cache of some sort... it is early so i may not be using specifically precise terms... so, when you make a dns change properly on a serving system, it still has to get distributed and that doesnt mean that every machine that has a resolver or cache has changed at that instant... it can take more time than you expecetd... until the cache in the resolver on that system is updated, changed, flushed, refreshed, whatever etc... it doesnt need to go get an update... example only: so, like on a windwos box, you can down the ethernet and bring it back up and walla walla! on linux boxes, there are various things you can do there... exercise left up to the reader - rh ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] OT: free DNS service?
On Sun, Jan 17, 2010 at 4:34 PM, Keith Keller wrote: > On Sun, Jan 17, 2010 at 10:42:44AM -0500, Lanny Marcus wrote: >> Looking at the web site of zoneedit it looks pretty serious, so going >> to zoneedit may be "Plan B". "Plan A", staying with the current DNS >> service is the best for me, if they resolve the issue. > > I have used zoneedit for some small, low-DNS traffic domains, for many > years without problems. If you have a ton of DNS traffic, you can still > use zoneedit but they may charge you. Their price structure is here: > > http://zoneedit.com/doc/faq.html#faq13 Keith: Thank you for that!If I need to change from MyDomain's DNS service, which I've been using for 7 years, I will move to ZoneEdit. The sites are low traffic, so I don't think they will charge me if I use their service. Appreciate you sharing your experience! Their web site isn't fancy but it looks very serious. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] OT: free DNS service?
On Sun, Jan 17, 2010 at 10:42:44AM -0500, Lanny Marcus wrote: > Looking at the web site of zoneedit it looks pretty serious, so going > to zoneedit may be "Plan B". "Plan A", staying with the current DNS > service is the best for me, if they resolve the issue. I have used zoneedit for some small, low-DNS traffic domains, for many years without problems. If you have a ton of DNS traffic, you can still use zoneedit but they may charge you. Their price structure is here: http://zoneedit.com/doc/faq.html#faq13 --keith -- kkel...@speakeasy.net ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] OT: free DNS service?
On Sun, Jan 17, 2010 at 11:28 AM, Frank Cox wrote: > > On Sun, 2010-01-17 at 07:22 -0500, Lanny Marcus wrote: >> (BTW, the Domain is registered with >> GoDaddy, but not hosted there, so it appears I cannot use their "Total >> DNS" service). > > Look again. I have a half-dozen domain names registered with Godaddy > that live on my webserver and they are all set up under Total DNS > Control. > > Never had any problems with it. Frank: Thank you!I will look again! Currently the DNS is on mydomain.com and hopefully can stay there, but, if not, GoDaddy would be the easiest place to put the DNS for the 2 domains that are registered with GoDaddy. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] OT: free DNS service?
On Sun, 2010-01-17 at 07:22 -0500, Lanny Marcus wrote: > (BTW, the Domain is registered with > GoDaddy, but not hosted there, so it appears I cannot use their "Total > DNS" service). Look again. I have a half-dozen domain names registered with Godaddy that live on my webserver and they are all set up under Total DNS Control. Never had any problems with it. -- MELVILLE THEATRE ~ Melville Sask ~ http://www.melvilletheatre.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] OT: free DNS service?
On Sun, Jan 17, 2010 at 7:22 AM, Lanny Marcus wrote: > I have been using a free DNS service for the past seven (7) years. > This morning, at 4 A.M., , I changed the "A" record for one of my web > sites, to point to an IP address on a different server, so I could > test. After watching the TTL count down from 3600 to zero, with the > "dig" command, it then reset to 3600, but still resolved to the > original IP address. :-) I set the "A" record back to the original > IP address and filed a Support Ticket with that company, William and Jeff: Thank you for your replies and the information you gave me!I am hoping the current DNS service will resolve this issue, but, if not, then I will need to change to another DNS service, so I want to have a "Plan B". Looking at the web site of zoneedit it looks pretty serious, so going to zoneedit may be "Plan B". "Plan A", staying with the current DNS service is the best for me, if they resolve the issue. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] OT: free DNS service?
On Sun, Jan 17, 2010 at 6:22 AM, Lanny Marcus wrote: > I have been using a free DNS service for the past seven (7) years. > This morning, at 4 A.M., , I changed the "A" record for one of my web > sites, to point to an IP address on a different server, so I could > test. After watching the TTL count down from 3600 to zero, with the > "dig" command, it then reset to 3600, but still resolved to the > original IP address. :-) I set the "A" record back to the original > IP address and filed a Support Ticket with that company, but if they > cannot get this to work properly again, I need a new DNS service that > is free. Recommendations? (BTW, the Domain is registered with > GoDaddy, but not hosted there, so it appears I cannot use their "Total > DNS" service). TIA! I have used freedns.afraid.org without any issues. But it's strictly for personal use. They even have pretty good support for updating dynamic addresses. -- Jeff ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] OT: free DNS service?
On 1/17/2010 7:22 AM, Lanny Marcus wrote: > I have been using a free DNS service for the past seven (7) years. > This morning, at 4 A.M., , I changed the "A" record for one of my web > sites, to point to an IP address on a different server, so I could > test. After watching the TTL count down from 3600 to zero, with the > "dig" command, it then reset to 3600, but still resolved to the > original IP address. :-) I set the "A" record back to the original > IP address and filed a Support Ticket with that company, but if they > cannot get this to work properly again, I need a new DNS service that > is free. Recommendations? (BTW, the Domain is registered with > GoDaddy, but not hosted there, so it appears I cannot use their "Total > DNS" service). TIA! > > Lanny > Magazine subscriptions Largest discount Credit/Debit Card Check PayPal > http://www.lowcostmagazines.com/ > ___ > CentOS mailing list > CentOS@centos.org > http://lists.centos.org/mailman/listinfo/centos > > > Why not your own dns of the box? I use godaddy to point traffic to my server and it does dns for my domains on it's own...i am using virtualmin. I don't know which free dns service you are using now. I don't know if opendns allows that kind of flexibility. dyndns might work(unless that's who youa re using now). everydns is now owned by dyn.. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] OT: free DNS service?
I have been using a free DNS service for the past seven (7) years. This morning, at 4 A.M., , I changed the "A" record for one of my web sites, to point to an IP address on a different server, so I could test. After watching the TTL count down from 3600 to zero, with the "dig" command, it then reset to 3600, but still resolved to the original IP address. :-) I set the "A" record back to the original IP address and filed a Support Ticket with that company, but if they cannot get this to work properly again, I need a new DNS service that is free. Recommendations? (BTW, the Domain is registered with GoDaddy, but not hosted there, so it appears I cannot use their "Total DNS" service). TIA! Lanny Magazine subscriptions Largest discount Credit/Debit Card Check PayPal http://www.lowcostmagazines.com/ ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
