[Buildbot] #3151: host reverse DNS

Buildbot trac trac at buildbot.net
Fri Jan 23 03:20:58 UTC 2015


#3151: host reverse DNS
-------------------+--------------------------------
Reporter:  dustin  |       Owner:  dustin
    Type:  task    |      Status:  assigned
Priority:  major   |   Milestone:  sys - on-bb-infra
 Version:          |  Resolution:
Keywords:          |
-------------------+--------------------------------

Comment (by dustin):

 Since HE can't seem to get their stuff together, we switched out the NS's
 to `{c,f}.ns.buddyns.com`, `ns1.rtems.org`, and `ns1.darkbeer.org`.

 At this point, all four of those have the correct SOA:

 {{{
 dustin at euclid ~ $ for s in $servers; do host -tsoa
 224-255.128-255.10.211.140.in-addr.arpa $s; done
 Using domain server:
 Name: c.ns.buddyns.com
 Address: 2a01:4f8:d12:d01::10:4#53
 Aliases:

 224-255.128-255.10.211.140.in-addr.arpa has SOA record ns1.buildbot.net.
 hostmaster.buildbot.net. 2015012201 10800 1800 604800 86400
 Using domain server:
 Name: f.ns.buddyns.com
 Address: 2403:2500:4000::f3e#53
 Aliases:

 224-255.128-255.10.211.140.in-addr.arpa has SOA record ns1.buildbot.net.
 hostmaster.buildbot.net. 2015012201 10800 1800 604800 86400
 Using domain server:
 Name: ns1.rtems.org
 Address: 140.211.10.139#53
 Aliases:

 224-255.128-255.10.211.140.in-addr.arpa has SOA record ns1.buildbot.net.
 hostmaster.buildbot.net. 2015012201 10800 1800 604800 86400
 Using domain server:
 Name: ns1.darkbeer.org
 Address: 64.71.190.23#53
 Aliases:

 224-255.128-255.10.211.140.in-addr.arpa has SOA record ns1.buildbot.net.
 hostmaster.buildbot.net. 2015012201 10800 1800 604800 86400
 }}}

 and NS:

 {{{
 224-255.128-255.10.211.140.in-addr.arpa has SOA record ns1.buildbot.net.
 hostmaster.buildbot.net. 2015012201 10800 1800 604800 86400
 dustin at euclid ~ $ for s in $servers; do host -tns
 224-255.128-255.10.211.140.in-addr.arpa $s; done
 Using domain server:
 Name: c.ns.buddyns.com
 Address: 2a01:4f8:d12:d01::10:4#53
 Aliases:

 224-255.128-255.10.211.140.in-addr.arpa name server c.ns.buddyns.com.
 224-255.128-255.10.211.140.in-addr.arpa name server f.ns.buddyns.com.
 224-255.128-255.10.211.140.in-addr.arpa name server ns1.rtems.org.
 224-255.128-255.10.211.140.in-addr.arpa name server ns1.darkbeer.org.
 Using domain server:
 Name: f.ns.buddyns.com
 Address: 2403:2500:4000::f3e#53
 Aliases:

 224-255.128-255.10.211.140.in-addr.arpa name server c.ns.buddyns.com.
 224-255.128-255.10.211.140.in-addr.arpa name server f.ns.buddyns.com.
 224-255.128-255.10.211.140.in-addr.arpa name server ns1.rtems.org.
 224-255.128-255.10.211.140.in-addr.arpa name server ns1.darkbeer.org.
 Using domain server:
 Name: ns1.rtems.org
 Address: 140.211.10.139#53
 Aliases:

 224-255.128-255.10.211.140.in-addr.arpa name server c.ns.buddyns.com.
 224-255.128-255.10.211.140.in-addr.arpa name server f.ns.buddyns.com.
 224-255.128-255.10.211.140.in-addr.arpa name server ns1.rtems.org.
 224-255.128-255.10.211.140.in-addr.arpa name server ns1.darkbeer.org.
 Using domain server:
 Name: ns1.darkbeer.org
 Address: 64.71.190.23#53
 Aliases:

 224-255.128-255.10.211.140.in-addr.arpa name server f.ns.buddyns.com.
 224-255.128-255.10.211.140.in-addr.arpa name server ns1.rtems.org.
 224-255.128-255.10.211.140.in-addr.arpa name server c.ns.buddyns.com.
 224-255.128-255.10.211.140.in-addr.arpa name server ns1.darkbeer.org.
 }}}

 All of the hosts also have the zone contents, slaved from
 `ns1.buildbot.net`:
 {{{
 dustin at euclid ~ $ for s in $servers; do host -tptr
 243.224-255.128-255.10.211.140.in-addr.arpa $s; done
 Using domain server:
 Name: c.ns.buddyns.com
 Address: 2a01:4f8:d12:d01::10:4#53
 Aliases:

 243.224-255.128-255.10.211.140.in-addr.arpa domain name pointer
 ftp.buildbot.net.
 Using domain server:
 Name: f.ns.buddyns.com
 Address: 2403:2500:4000::f3e#53
 Aliases:

 243.224-255.128-255.10.211.140.in-addr.arpa domain name pointer
 ftp.buildbot.net.
 Using domain server:
 Name: ns1.rtems.org
 Address: 140.211.10.139#53
 Aliases:

 243.224-255.128-255.10.211.140.in-addr.arpa domain name pointer
 ftp.buildbot.net.
 Using domain server:
 Name: ns1.darkbeer.org
 Address: 64.71.190.23#53
 Aliases:

 243.224-255.128-255.10.211.140.in-addr.arpa domain name pointer
 ftp.buildbot.net.
 }}}

 The bit that's missing is the sequence of CNAMEs.  `243.128-255.10.211.140
 .in-addr.arpa.` should be a CNAME to `243.224-255.128-255.10.211.140.in-
 addr.arpa.`, but instead `ns1.rtems.org` and `ns1.darkbeer.org` are
 returning NXDOMAIN for that name.

--
Ticket URL: <http://trac.buildbot.net/ticket/3151#comment:9>
Buildbot <http://buildbot.net/>
Buildbot: build/test automation


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