[Pdns-users] fail over for web server
Hello, I setup a pdns with approximately 90 domains. For all domains we have two web servers. Now, if a web server is down, 50% of the request failed because the web server is not available due to down time. I read in the documentation that it is possible to make fail over with pdns, but I don't fin how make this... Someone has tested the failover with pdsn ? In case of yes, could you explain me how I need to setup my pdns please ? Regards Jean ___ Le contenu de ce courriel est uniquement réservé à la personne ou l'organisme à qui il est destiné. Si vous n'êtes pas le destinataire prévu, veuillez nous en informer au plus vite et détruire le présent courriel. Dans ce cas, il ne vous est pas permis de copier ce courriel, de le distribuer ou de l'utiliser de quelque manière que ce soit. The content of this e-mail is intended only and solely for the use of the named recipient or organisation. If you are not the named recipient, please inform us immediately and delete the present e-mail. In this case, you are nor allowed to copy, distribute or use this e-mail in any way. ___ ___ Pdns-users mailing list Pdns-users@mailman.powerdns.com http://mailman.powerdns.com/mailman/listinfo/pdns-users
Re: [Pdns-users] fail over for web server
Jean, One typical way to implement this is to use Nagios to monitor your web servers. Then if one goes offline, issue the appropriate update to the PDNS database. Ken On Wed, Aug 15, 2007 at 01:43:28PM +0200, Jean Chiappini wrote: Hello, I setup a pdns with approximately 90 domains. For all domains we have two web servers. Now, if a web server is down, 50% of the request failed because the web server is not available due to down time. I read in the documentation that it is possible to make fail over with pdns, but I don't fin how make this... Someone has tested the failover with pdsn ? In case of yes, could you explain me how I need to setup my pdns please ? Regards Jean ___ Le contenu de ce courriel est uniquement r??serv?? ?? la personne ou l'organisme ?? qui il est destin??. Si vous n'??tes pas le destinataire pr??vu, veuillez nous en informer au plus vite et d??truire le pr??sent courriel. Dans ce cas, il ne vous est pas permis de copier ce courriel, de le distribuer ou de l'utiliser de quelque mani??re que ce soit. The content of this e-mail is intended only and solely for the use of the named recipient or organisation. If you are not the named recipient, please inform us immediately and delete the present e-mail. In this case, you are nor allowed to copy, distribute or use this e-mail in any way. ___ ___ Pdns-users mailing list Pdns-users@mailman.powerdns.com http://mailman.powerdns.com/mailman/listinfo/pdns-users ___ Pdns-users mailing list Pdns-users@mailman.powerdns.com http://mailman.powerdns.com/mailman/listinfo/pdns-users
Re: [Pdns-users] fail over for web server
Thank you for your response. Yes it is one possiblity, we use zabbix, but I prefered a mechanism based on pdns directly... Regards Jean Kenneth Marshall [EMAIL PROTECTED] 08/15/07 3:24 PM Jean, One typical way to implement this is to use Nagios to monitor your web servers. Then if one goes offline, issue the appropriate update to the PDNS database. Ken On Wed, Aug 15, 2007 at 01:43:28PM +0200, Jean Chiappini wrote: Hello, I setup a pdns with approximately 90 domains. For all domains we have two web servers. Now, if a web server is down, 50% of the request failed because the web server is not available due to down time. I read in the documentation that it is possible to make fail over with pdns, but I don't fin how make this... Someone has tested the failover with pdsn ? In case of yes, could you explain me how I need to setup my pdns please ? Regards Jean ___ Le contenu de ce courriel est uniquement r??serv?? ?? la personne ou l'organisme ?? qui il est destin??. Si vous n'??tes pas le destinataire pr??vu, veuillez nous en informer au plus vite et d??truire le pr??sent courriel. Dans ce cas, il ne vous est pas permis de copier ce courriel, de le distribuer ou de l'utiliser de quelque mani??re que ce soit. The content of this e-mail is intended only and solely for the use of the named recipient or organisation. If you are not the named recipient, please inform us immediately and delete the present e-mail. In this case, you are nor allowed to copy, distribute or use this e-mail in any way. ___ ___ Pdns-users mailing list Pdns-users@mailman.powerdns.com http://mailman.powerdns.com/mailman/listinfo/pdns-users ___ Le contenu de ce courriel est uniquement réservé à la personne ou l'organisme à qui il est destiné. Si vous n'êtes pas le destinataire prévu, veuillez nous en informer au plus vite et détruire le présent courriel. Dans ce cas, il ne vous est pas permis de copier ce courriel, de le distribuer ou de l'utiliser de quelque manière que ce soit. The content of this e-mail is intended only and solely for the use of the named recipient or organisation. If you are not the named recipient, please inform us immediately and delete the present e-mail. In this case, you are nor allowed to copy, distribute or use this e-mail in any way. ___ ___ Pdns-users mailing list Pdns-users@mailman.powerdns.com http://mailman.powerdns.com/mailman/listinfo/pdns-users
RE: [Pdns-users] fail over for web server
Good day, You will not be able to implement this with just pdns. There is no way for the DNS server to know which servers are online or offline on its own. The failover you read about is likely that for the DNS server itself. As Kenneth noted, if you have any tools that can identify the status of the services, they can issue the appropriate commands to your DNS server. Note that this would require a very low TTL value on the RR to be effective. Note that the most common business solution to this problem is to use load-balancing technology- either a hardware server pair in front of the servers, or software on both web servers to manage a VIP. But, this is just the most common solution, not the only one. FYI, Darren Gamble Systems Architect, Regional Services Shaw Cablesystems GP 630 - 3rd Avenue SW Calgary, Alberta, Canada T2P 4L4 (403) 781-4948 -Original Message- From: [EMAIL PROTECTED] [mailto:pdns-users- [EMAIL PROTECTED] On Behalf Of Jean Chiappini Sent: Wednesday, August 15, 2007 7:55 AM To: [EMAIL PROTECTED] Cc: pdns-users@mailman.powerdns.com Subject: Re: [Pdns-users] fail over for web server Thank you for your response. Yes it is one possiblity, we use zabbix, but I prefered a mechanism based on pdns directly... Regards Jean Kenneth Marshall [EMAIL PROTECTED] 08/15/07 3:24 PM Jean, One typical way to implement this is to use Nagios to monitor your web servers. Then if one goes offline, issue the appropriate update to the PDNS database. Ken On Wed, Aug 15, 2007 at 01:43:28PM +0200, Jean Chiappini wrote: Hello, I setup a pdns with approximately 90 domains. For all domains we have two web servers. Now, if a web server is down, 50% of the request failed because the web server is not available due to down time. I read in the documentation that it is possible to make fail over with pdns, but I don't fin how make this... Someone has tested the failover with pdsn ? In case of yes, could you explain me how I need to setup my pdns please ? Regards Jean ___ Le contenu de ce courriel est uniquement r??serv?? ?? la personne ou l'organisme ?? qui il est destin??. Si vous n'??tes pas le destinataire pr??vu, veuillez nous en informer au plus vite et d??truire le pr??sent courriel. Dans ce cas, il ne vous est pas permis de copier ce courriel, de le distribuer ou de l'utiliser de quelque mani??re que ce soit. The content of this e-mail is intended only and solely for the use of the named recipient or organisation. If you are not the named recipient, please inform us immediately and delete the present e-mail. In this case, you are nor allowed to copy, distribute or use this e-mail in any way. ___ ___ Pdns-users mailing list Pdns-users@mailman.powerdns.com http://mailman.powerdns.com/mailman/listinfo/pdns-users ___ Le contenu de ce courriel est uniquement réservé à la personne ou l'organisme à qui il est destiné. Si vous n'êtes pas le destinataire prévu, veuillez nous en informer au plus vite et détruire le présent courriel. Dans ce cas, il ne vous est pas permis de copier ce courriel, de le distribuer ou de l'utiliser de quelque manière que ce soit. The content of this e-mail is intended only and solely for the use of the named recipient or organisation. If you are not the named recipient, please inform us immediately and delete the present e-mail. In this case, you are nor allowed to copy, distribute or use this e-mail in any way. ___ ___ Pdns-users mailing list Pdns-users@mailman.powerdns.com http://mailman.powerdns.com/mailman/listinfo/pdns-users ___ Pdns-users mailing list Pdns-users@mailman.powerdns.com http://mailman.powerdns.com/mailman/listinfo/pdns-users
