From CSCWiki
Revision as of 15:01, 14 May 2021 by Merenber (talk | contribs) (→‎CSC DNS)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to navigation Jump to search


The University of Waterloo's DNS is managed through Infoblox.

People who have access to Infoblox:

  • ztseguin
  • jxpryde
  • mtrberzi
  • API account located in the standard syscom place


CSC hosts some authoritative dns services on ext-dns1.csclub.uwaterloo.ca ( and ext-dns2.csclub.uwaterloo.ca (

Current authoritative domains:

  • csclub.cloud
  • uwaterloo.club
  • csclub.uwaterloo.ca: A script (/opt/bindify/update-dns on dns1) runs every 10 minutes to populate this zone from the Infoblox records.
  • Any zone added to Designate DNS service on CSC Cloud

Those DNS servers are also recursive for machines located on the University network.


The main DNS zone for the club (csclub.uwaterloo.ca) is managed using the University's Infoblox system.

To add a new record:

  1. Visit Infoblox
  2. Locate the desired network
  3. Find a free IP address (ping and reverse DNS it to make sure it's unused)
  4. Click add host (+)
  5. Set the zone to csclub.uwaterloo.ca
  6. Set the name
  7. Add the IPv4 address, if it is not set
  8. Add the IPv6 address, typically in the format of (2620:101:f000:$SUBNET:c5c::$LAST_OCTET_OF_V4_ADDRESS)
  9. Click "Next"
  10. Set Pol8 Classification to "Public"
  11. Set Primary OU to "CS"
  12. Set Technical Contact to "syscom@csclub.uwaterloo.ca"
  13. Click "Save & Close"

The CSC DNS servers will update within 10 minutes with the new information.

Updating records

If you manually update a record in the dns1 container (somewhere in /etc/bind), make sure you also update the serial number for the SOA record for the corresponding zone. Then, run rndc reload.


LOC Records

If we really cared, we might add a LOC record for csclub.uwaterloo.ca.


We could look into SSHFP records. Apparently OpenSSH supports these. (Discussion moved to Talk:DNS.)