Nameservers

[sebyte]

Just installed ntpdate and it was failing. Turned out to be the nameservers.

Of the three I have listed:nameserver 209.51.143.76
nameserver 209.51.143.19
nameserver 209.51.128.20... the first one is online but can't resolve pool.ntp.org and the second one is completely down. Only the third one successfully resolves pool.ntp.org.

The workaround is simple; I've just put the third one first, but I'm wondering if this list out of date or something?

sdt

[matta]

The first is our own primary resolver that runs dnscache with a huge memory allocation and should always work. The other 2 are our datacenters and may change based on their configurations, I will update all the images and update the resolver thread if it indeed has changed.

Our resolver does seem to work though...


> pool.ntp.org
Server: 209.51.143.76
Address: 209.51.143.76#53

Non-authoritative answer:
Name: pool.ntp.org
Address: 64.5.53.202
Name: pool.ntp.org
Address: 69.248.14.194
Name: pool.ntp.org
Address: 72.3.133.147
Name: pool.ntp.org
Address: 80.48.4.2
Name: pool.ntp.org
Address: 81.169.154.116
Name: pool.ntp.org
Address: 82.76.121.165
Name: pool.ntp.org
Address: 85.214.36.108
Name: pool.ntp.org
Address: 193.110.17.92
Name: pool.ntp.org
Address: 198.60.22.240
Name: pool.ntp.org
Address: 213.238.47.29
Name: pool.ntp.org
Address: 216.52.237.153
Name: pool.ntp.org
Address: 62.193.225.80

[sebyte]

They're all working now. Those image updates e.t.c. must have done the trick. Sometimes I think if didn't run my shells in Emacs buffers I'd begin to wonder if I was losing my mind, the way things work and then they don't work, and then they work again, and so on... Just in case you're starting to wonder the same thing, this is what prompted my post in the first place. justonecornetto:~:$ cat /etc/resolv.conf
nameserver 209.51.143.76
nameserver 209.51.143.19
nameserver 209.51.128.20
nameserver 127.0.0.1justonecornetto:~:$ dig @209.51.143.76 pool.ntp.org

; <<>> DiG 9.2.4 <<>> @209.51.143.76 pool.ntp.org
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 47767
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;pool.ntp.org. IN A

;; Query time: 1 msec
;; SERVER: 209.51.143.76#53(209.51.143.76)
;; WHEN: Sun Apr 30 18:00:26 2006
;; MSG SIZE rcvd: 30justonecornetto:~:$ dig @209.51.143.19 pool.ntp.org

; <<>> DiG 9.2.4 <<>> @209.51.143.19 pool.ntp.org
;; global options: printcmd
;; connection timed out; no servers could be reachedjustonecornetto:~:$ dig @209.51.128.20 pool.ntp.org

; <<>> DiG 9.2.4 <<>> @209.51.128.20 pool.ntp.org
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 53374
;; flags: qr rd ra; QUERY: 1, ANSWER: 12, AUTHORITY: 5, ADDITIONAL: 3

;; QUESTION SECTION:
;pool.ntp.org. IN A

;; ANSWER SECTION:
pool.ntp.org. 2100 IN A 62.193.225.80
pool.ntp.org. 2100 IN A 64.5.53.202
pool.ntp.org. 2100 IN A 69.248.14.194
pool.ntp.org. 2100 IN A 72.3.133.147
pool.ntp.org. 2100 IN A 80.48.4.2
pool.ntp.org. 2100 IN A 81.169.154.116
pool.ntp.org. 2100 IN A 82.76.121.165
pool.ntp.org. 2100 IN A 85.214.36.108
pool.ntp.org. 2100 IN A 193.110.17.92
pool.ntp.org. 2100 IN A 198.60.22.240
pool.ntp.org. 2100 IN A 213.238.47.29
pool.ntp.org. 2100 IN A 216.52.237.153

;; AUTHORITY SECTION:
pool.ntp.org. 11619 IN NS zbasel.fortytwo.ch.
pool.ntp.org. 11619 IN NS aventura.bhms-groep.nl.
pool.ntp.org. 11619 IN NS ns1.us.bitnames.com.
pool.ntp.org. 11619 IN NS ns1.mailworx.net.
pool.ntp.org. 11619 IN NS usenet.net.nz.

;; ADDITIONAL SECTION:
ns1.us.bitnames.com. 122957 IN A 63.251.223.170
ns1.mailworx.net. 172800 IN A 69.1.200.68
zbasel.fortytwo.ch. 11619 IN A 193.138.215.60

;; Query time: 183 msec
;; SERVER: 209.51.128.20#53(209.51.128.20)
;; WHEN: Sun Apr 30 18:01:16 2006
;; MSG SIZE rcvd: 428