DNS Infrastructure SOP

DNS - SOP

Contact Information

Owner: Fedora Infrastructure Team

Contact: #fedora-admin, sysadmin-main group, Jesse Keating (f13) and Mike McGrath (mmcgrath)

Location: ServerBeach and a Colo in Detroit

Servers: ns1.fedoraproject.org, DNS1.J2SOLUTIONS.NET

Purpose: Provides DNS to our users

Description

We have two DNS server, the primary is at ns1.fedoraproject.org and is hosted at ServerBeach, from there it replicates to dns1.j2solutions.net.

Troubleshooting, Resolution and Maintenance

Note, dns1.j2solutions.net is not run by Fedora's Infrastructure Team. Its resources have been donated by Jesse Keating.

DNS update

DNS config files are puppet managed on puppet1. The update is standard to the puppet configs at http://fedoraproject.org/wiki/Infrastructure/Puppet/QuickStart

From puppet1:

git clone /git/puppet
cd configs/dns/master
vi fedoraproject.org # Don't forget to increment the serial!
cd ../..
cvs commit -m "What you did"
make install

It should update within a half hour. You can test the new configs with dig:

dig @ns1.fedoraproject.org fedoraproject.org
dig @dns1.j2solutions.net cvs.fedoraproject.org

resolv.conf

In order to make the network more transparent to the admins we do a lot of search based relative names. Below is a list of what a resolv.conf should look like.

Any machine that is not on our vpn or has not yet joined the vpn should _NOT_ have the vpn.fedoraproject.org search until after it has been added to the vpn (if it ever does)

Phoenix

search fedora.phx.redhat.com vpn.fedoraproject.org fedoraproject.org

Non-Phoenix

search vpn.fedoraproject.org fedoraproject.org

The idea here is that we can, when need be, setup local domains to contact instead of having to go over the VPN directly but still have sane configs. For example if we tell the proxy server to hit "app1" and that box is in PHX, it will go directly to app1, if its not, it will go over the vpn to app1.