<br><br><div class="gmail_quote">On Thu, Jun 7, 2012 at 4:29 PM, Daniel L. Miller <span dir="ltr"><<a href="mailto:dmiller@amfes.com" target="_blank">dmiller@amfes.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div class="im">On 6/7/2012 2:38 AM, Odhiambo Washington wrote:<br>
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However, coming from BIND, my mind is transfixed with the single daemon which can do both authoritative and recursion (selectively). Does it mean that with pdns, I have to run at minimum THREE separate servers - one master, one slave, one recursor?<br>
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In the DNS world, I've seen two implementation paradigms: combined daemon (BIND, dnsMasq) vs separate authoritative and recursors (djbdns, PowerDNS). I am no security expert - but it seems like the "newer" DNS implementations use separate daemons. Having dedicated daemons means each can be optimized for its particular task: either retrieving fixed answers from a storage backend and serving them as rapidly as possible, or communicating with other servers and caching the results. It also means upgrades or changes can be done to one service without affecting the other.<br>
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Whether or not you have the server processes running on the same machine is up to you. If you require a slave authoritative server - you can also have a secondary recursor - which means (heavens!) FOUR separate server processes on various machines.<br>
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The question is not, why doesn't PowerDNS implement its services the same way BIND does. The question is does PowerDNS solve your DNS needs in an efficient & reliable manner. Traditionally, IMHO, in the UNIX world, multiple dedicated function processes are preferred to monolithic daemons. Windows may be different.<span class="HOEnZb"><font color="#888888"><br>
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Daniel<br><br></font></span></blockquote><div> <br>Hi Daniel,<br><br>Thanks for the clarification. I am now getting the gist of PowerDNS quite fast, also thanks to Oli.<br>Since I want to run two authoritative (1 Master, 1 Slave), I have now learnt that they can also act as master-recursor and slave-recursor as long as I give them each TWO IPs for the two daemons, or a single IP with recursor listening on a different port and the authoritative configured to forward queries to the recursor on IP:Port.<br>
<br>I am now reading about master and slave - without using the backend, although it would appear using the backend is quite dandy.<br><br></div></div><br clear="all"><br>-- <br>Best regards,<br>Odhiambo WASHINGTON,<br>Nairobi,KE<br>
+254733744121/+254722743223<br>_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ <br>I can't hear you -- I'm using the scrambler.<br><br>