[CentOS] problem with slave dns servers
Hi, I have 4 bind9 dns installed on centos 4. My primary dns server went down and all of my domains doesn't resolve even if the 3 slave dns is up and running. Im not sure where to configure this is it in my domain registration or in bind? -- Regards, Mark Quitoriano Blog | http://mark.quitoriano.org VicidialNOW! | http://www.vicidialnow.com APUG! | http://asterisk.org.ph ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] problem with slave dns servers
Have you describe all the slave servers in you domain configuration (in registrant)? Mark Quitoriano wrote / napísal(a): Hi, I have 4 bind9 dns installed on centos 4. My primary dns server went down and all of my domains doesn't resolve even if the 3 slave dns is up and running. Im not sure where to configure this is it in my domain registration or in bind? -- Regards, Mark Quitoriano Blog | http://mark.quitoriano.org VicidialNOW! | http://www.vicidialnow.com APUG! | http://asterisk.org.ph ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] problem with slave dns servers
Hi, what is the TTL of your DNS records ? After TTL expires, the slaves don't respond to queries either, because the records aren't valid anymore. If your primary is down longer than the TTL of your DNS records you could reconfigure one of the slaves as a new primary or maybe consider making more than 1 primary. On Thu, 2008-08-28 at 09:01 +0200, Romeo Ninov wrote: Have you describe all the slave servers in you domain configuration (in registrant)? Mark Quitoriano wrote / napísal(a): Hi, I have 4 bind9 dns installed on centos 4. My primary dns server went down and all of my domains doesn't resolve even if the 3 slave dns is up and running. Im not sure where to configure this is it in my domain registration or in bind? -- Regards, Michel ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] problem with slave dns servers
yup On Thu, Aug 28, 2008 at 3:01 PM, Romeo Ninov [EMAIL PROTECTED] wrote: Have you describe all the slave servers in you domain configuration (in registrant)? Mark Quitoriano wrote / napísal(a): Hi, I have 4 bind9 dns installed on centos 4. My primary dns server went down and all of my domains doesn't resolve even if the 3 slave dns is up and running. Im not sure where to configure this is it in my domain registration or in bind? -- Regards, Mark Quitoriano Blog | http://mark.quitoriano.org VicidialNOW! | http://www.vicidialnow.com APUG! | http://asterisk.org.ph ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos -- Regards, Mark Quitoriano Blog | http://mark.quitoriano.org VicidialNOW! | http://www.vicidialnow.com APUG! | http://asterisk.org.ph ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] problem with slave dns servers
hmmm... yeah i think is et everything to 300 which is not good. What is the recommended TTL settings? some sites recommend 4 days some 1 hour. On Thu, Aug 28, 2008 at 3:17 PM, Michel van Deventer [EMAIL PROTECTED] wrote: Hi, what is the TTL of your DNS records ? After TTL expires, the slaves don't respond to queries either, because the records aren't valid anymore. If your primary is down longer than the TTL of your DNS records you could reconfigure one of the slaves as a new primary or maybe consider making more than 1 primary. On Thu, 2008-08-28 at 09:01 +0200, Romeo Ninov wrote: Have you describe all the slave servers in you domain configuration (in registrant)? Mark Quitoriano wrote / napísal(a): Hi, I have 4 bind9 dns installed on centos 4. My primary dns server went down and all of my domains doesn't resolve even if the 3 slave dns is up and running. Im not sure where to configure this is it in my domain registration or in bind? -- Regards, Michel ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos -- Regards, Mark Quitoriano Blog | http://mark.quitoriano.org VicidialNOW! | http://www.vicidialnow.com APUG! | http://asterisk.org.ph ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] problem with slave dns servers
Depend how often you change DNS records, but normally 2-3 days IMHO is OK Mark Quitoriano wrote / napísal(a): hmmm... yeah i think is et everything to 300 which is not good. What is the recommended TTL settings? some sites recommend 4 days some 1 hour. On Thu, Aug 28, 2008 at 3:17 PM, Michel van Deventer [EMAIL PROTECTED] wrote: Hi, what is the TTL of your DNS records ? After TTL expires, the slaves don't respond to queries either, because the records aren't valid anymore. If your primary is down longer than the TTL of your DNS records you could reconfigure one of the slaves as a new primary or maybe consider making more than 1 primary. On Thu, 2008-08-28 at 09:01 +0200, Romeo Ninov wrote: Have you describe all the slave servers in you domain configuration (in registrant)? Mark Quitoriano wrote / napísal(a): Hi, I have 4 bind9 dns installed on centos 4. My primary dns server went down and all of my domains doesn't resolve even if the 3 slave dns is up and running. Im not sure where to configure this is it in my domain registration or in bind? -- Regards, Michel ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos -- Regards, Mark Quitoriano Blog | http://mark.quitoriano.org VicidialNOW! | http://www.vicidialnow.com APUG! | http://asterisk.org.ph ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] problem with slave dns servers
ok great! Thanks for the help guys! 2008/8/28 Romeo Ninov [EMAIL PROTECTED]: Depend how often you change DNS records, but normally 2-3 days IMHO is OK Mark Quitoriano wrote / napísal(a): hmmm... yeah i think is et everything to 300 which is not good. What is the recommended TTL settings? some sites recommend 4 days some 1 hour. On Thu, Aug 28, 2008 at 3:17 PM, Michel van Deventer [EMAIL PROTECTED] wrote: Hi, what is the TTL of your DNS records ? After TTL expires, the slaves don't respond to queries either, because the records aren't valid anymore. If your primary is down longer than the TTL of your DNS records you could reconfigure one of the slaves as a new primary or maybe consider making more than 1 primary. On Thu, 2008-08-28 at 09:01 +0200, Romeo Ninov wrote: Have you describe all the slave servers in you domain configuration (in registrant)? Mark Quitoriano wrote / napísal(a): Hi, I have 4 bind9 dns installed on centos 4. My primary dns server went down and all of my domains doesn't resolve even if the 3 slave dns is up and running. Im not sure where to configure this is it in my domain registration or in bind? -- Regards, Michel ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos -- Regards, Mark Quitoriano Blog | http://mark.quitoriano.org VicidialNOW! | http://www.vicidialnow.com APUG! | http://asterisk.org.ph ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos -- Regards, Mark Quitoriano Blog | http://mark.quitoriano.org VicidialNOW! | http://www.vicidialnow.com APUG! | http://asterisk.org.ph ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] problem with slave dns servers
On Thursday 28 August 2008 05:50, Mark Quitoriano wrote: hmmm... yeah i think is et everything to 300 which is not good. What is the recommended TTL settings? some sites recommend 4 days some 1 hour. On Thu, Aug 28, 2008 at 3:17 PM, Michel van Deventer [EMAIL PROTECTED] wrote: Hi, what is the TTL of your DNS records ? After TTL expires, the slaves don't respond to queries either, because the records aren't valid anymore. If your primary is down longer than the TTL of your DNS records you could reconfigure one of the slaves as a new primary or maybe consider making more than 1 primary. On Thu, 2008-08-28 at 09:01 +0200, Romeo Ninov wrote: Have you describe all the slave servers in you domain configuration (in registrant)? Mark Quitoriano wrote / napísal(a): Hi, I have 4 bind9 dns installed on centos 4. My primary dns server went down and all of my domains doesn't resolve even if the 3 slave dns is up and running. Im not sure where to configure this is it in my domain registration or in bind? It is not your TTL values that is the problem it is the EXPIRE value. TTL is used for the caching of the information and tells the cache when to remove the information. EXPIRE is the value that tell the slave how long the information it the zone file is good for when the master cannot be reached. Leave your TTL at 300 (5 min) and change the EXPIRE value to something like a week or more. -- Regards Robert Smile... it increases your face value! Linux User #296285 http://counter.li.org ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] problem with slave dns servers
On Fri, Aug 29, 2008 at 6:27 AM, Robert Spangler [EMAIL PROTECTED] wrote: On Thursday 28 August 2008 05:50, Mark Quitoriano wrote: hmmm... yeah i think is et everything to 300 which is not good. What is the recommended TTL settings? some sites recommend 4 days some 1 hour. On Thu, Aug 28, 2008 at 3:17 PM, Michel van Deventer [EMAIL PROTECTED] wrote: Hi, what is the TTL of your DNS records ? After TTL expires, the slaves don't respond to queries either, because the records aren't valid anymore. If your primary is down longer than the TTL of your DNS records you could reconfigure one of the slaves as a new primary or maybe consider making more than 1 primary. On Thu, 2008-08-28 at 09:01 +0200, Romeo Ninov wrote: Have you describe all the slave servers in you domain configuration (in registrant)? Mark Quitoriano wrote / napísal(a): Hi, I have 4 bind9 dns installed on centos 4. My primary dns server went down and all of my domains doesn't resolve even if the 3 slave dns is up and running. Im not sure where to configure this is it in my domain registration or in bind? It is not your TTL values that is the problem it is the EXPIRE value. TTL is used for the caching of the information and tells the cache when to remove the information. EXPIRE is the value that tell the slave how long the information it the zone file is good for when the master cannot be reached. Leave your TTL at 300 (5 min) and change the EXPIRE value to something like a week or more. Ok that clarifies everything :) thanks man! ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
