Last modified: 2014-10-30 20:13:07 UTC
Host names added with [[wikitech:Special:NovaAddress]] generate forward DNS entries that resolve for example tools-login.wmflabs.org to 208.80.155.130, but the reverse DNS entry for 208.80.155.130 = 130.155.80.208.in-addr.arpa doesn't exist. Apparently, at the moment forward DNS is handled by labs-ns0 (virt0) and labs-ns1 (virt1000) that run pdns backed by LDAP. http://www.linuxnetworks.de/doc/index.php/PowerDNS_LDAP_Backend/Example#Reverse_lookups has some documentation for that use case.
Change 121416 had a related patch set uploaded by Tim Landscheidt: Add temporary PTR record for mail.tools.wmflabs.org https://gerrit.wikimedia.org/r/121416
Change 121416 merged by coren: Add temporary PTR record for mail.tools.wmflabs.org https://gerrit.wikimedia.org/r/121416
RFC 2317 (cf. http://www.rfc-editor.org/rfc/rfc2317.txt) describes a procedure to delegate less than a class C by using CNAMEs: | [...] | 129 CNAME 129.128/26.2.0.192.in-addr.arpa. | 130 CNAME 130.128/26.2.0.192.in-addr.arpa. | 131 CNAME 131.128/26.2.0.192.in-addr.arpa. | [...] This looks promising; put CNAMEs for 208.80.155.128/25 in templates/155.80.208.in-addr.arpa that point to labs-ns0, and generate the PTR records on labs-ns0 in Extension:OpenStackManager. I had feared that we would need a more fragile approach (if Labs wouldn't get a complete /24 of public IPs :-)).
*** Bug 48539 has been marked as a duplicate of this bug. ***
