Atlas

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Atlas
IP Address(es): 128.153.145.4
Contact Person: Jared Dunbar
Last Update: July 2017
VM Host (Physical): hydra
Host VM: atlas
Services: DNS/DHCP


Hostname: dns2.cslabs.clarkson.edu, dns2.cosi.clarkson.edu, atlas.cslabs.clarkson.edu, atlas.cosi.clarkson.edu
Operating system: Not Debian, likely Arch or Ubuntu
LDAP Support: No
Development Status: Waiting for Fall 2017 to start development
Status: Nonexistant


Atlas will be a DNS/DHCP server which will act as a failover for essential network infrastructure, and assist Talos as not being the single point of failure.

DNS

This part will be easy, since it will be filling the place of dns2.cslabs.clarkson.edu, which previously existed and still is in the nameserver delegation rules.

It will be synchronized with the git repo for Talos automatically every 5 minutes.

DHCP

This will be the hard part. We don't want to give out double leases (or do it as little as possible), so we will use the existing Talos leasing system, and when Talos goes down, this service will realize when the leases expire, and start giving out new leases until Talos hands out leases again, at which point it will let all of the leases expire. Since Talos and Atlas will both have 5 minute lifespans on their DHCP leases, this could cause a few minutes of overlap when Talos goes up or down, but not too much of an issue.

LDAP/Kerberos

If someone wants to, they can set this up. Technically it's not too hard to set it up so that services can contact one or the other, but synchronization may be difficult.