PowerDNS

While searching for a secure DNS server with web administration, run over PowerDNS.

Seems to work fine, no problems noted so far. (Setup: MySQL backend, own pdns_recursor).

PowerDNS has a nice web Operational Monitor:

PDNS 2.9.18 Main Page
Uptime: 6.75 hours Queries/second, 1, 5, 10 minute averages: 2.39, 2.57, 2.46. Max queries/second: 4.64
Cache hitrate, 1, 5, 10 minute averages: 5.4%, 10%, 10%
Backend query cache hitrate, 1, 5, 10 minute averages: 73%, 63%, 59%
Backend query load, 1, 5, 10 minute averages: 4.09, 5.44, 5.57. Max queries/second: 13.3
Total queries: 51968. Question/answer latency: 0.024ms

Web administration: PowerAdmin (PHP, MySQL).

After almost 20 hours uptime:

Uptime: 19.3 hours Queries/second, 1, 5, 10 minute averages: 1.38, 2.01, 1.97. Max queries/second: 5.62
Cache hitrate, 1, 5, 10 minute averages: 9.4%, 9.2%, 10%
Backend query cache hitrate, 1, 5, 10 minute averages: 53%, 55%, 55%
Backend query load, 1, 5, 10 minute averages: 3.57, 5, 4.75. Max queries/second: 13.3
Total queries: 125913. Question/answer latency: 0.022ms

Test machine setup:

  • AMD Sempron(tm) 2200+
  • 512MB RAM
  • custom-compiled 2.4.31 linux kernel on slackware 10.1-based distribution