Posts in 2017
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HA Recursive DNS with dnsdist and exabgp
Thursday, February 02, 2017 in DNS
This is a fourth in blog series about DNS, specifically awesome things that can be done with dnsdist. This one was inspired by this blog post about exabgp and healthchecks, as well as this custom lua dnsdist load balancing policy. Routing, Front and …
Posts in 2016
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HA Authoritative DNS w/ dnsdist
Saturday, August 13, 2016 in DNS
I ran into an obscure limitation in PowerDNS 4.0 authoritative server recently. I have one nameserver which also acts as a slave to two other sets of zones with are transfered using AXFR. Some of those zones are DNSSEC enabled, and PowerDNS is only …
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dnsdist with pdns recursors
Monday, August 01, 2016 in DNS
This is a second in blog series about DNS, specifically awesome things that can be done with dnsdist. Front and Back Ends 2x dnsdist load balancers as client facing DNS resolvers 2x PowerDNS recursor backends Norway Spruce Picea abies shoot with …
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Load Balancing DNS with dnsdist
Saturday, May 07, 2016 in DNS
I first came across dnsdist in a NANOG post in the discussion of exploitation of a BIND DOS bug last summer. Jared Mauch had recommended dnsdist to easily implement DNS backend diversity. I was interested at the time. but wasn’t doing enough …