From Earlham CS Department
Revision as of 18:10, 9 December 2021 by Ajstroz18 (talk | contribs) (Compute (servers and clusters))
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This is the hub for the CS sysadmins on the wiki.


If you're visually inclined, we have a colorful and easy-to-edit map of our servers here!

Server room

Our servers are in Noyes, the science building that predates the CST. For general information about the server room and how to use it, check out this page.

Columns: machine name, IPs, type (virtual, metal), purpose, dies, cores, RAM

Compute (servers and clusters)

CS machines and cluster machines
Machine name 159 Ip Address 10Gb Ip address Operating System Metal or Virtual Description
Bowie Debian 9 Metal hosts and exports user files; Jupyterhub; landing server
Smiley Ubuntu 18.04 Metal VM host, not accessible to regular users
Web Ubuntu 18.04 Virtual Website host
Auth No 10Gb internet CentOS 7 Virtual host of LDAP user database
Code Ubuntu 18.04 Virtual Gitlab host
Net Ubuntu 18.04 Virtual network administration host for CS
Lovelace CentOS 7 Metal Example
Hopper Debian 10 Metal landing server, NFS host for cluster
Sakurai Debian 10 Metal Runs Backup
Miyamoto Fill in Debian 10 Metal Runs Backup
HopperPrime Debian 10 Metal Runs Backup
Monitor No 10Gb internet CentOS 7 Metal Server Monitoring
Bronte No 10Gb internet CentOS 7 Metal Example
Layout 0 CentOS 7 Metal Head Node
Layout 1 fill in fill in CentOS 7 Metal Tail Node
Layout 2 fill in fill in CentOS 7 Metal Tail Node
Layout 3 fill in fill in CentOS 7 Metal Tail Node
Whedon No 10Gb internet CentOS 7 Metal Example
Pollock CentOS 7 Metal Example

CS machines:

Cluster Machines:

There are 6 machines currently not in use in the 6 spaces above Monitor on the Equitorial Guinea rack

Specialized resources

Specialized computing applications are supported on the following machines:


We have two network fabrics linking the machines together. There are three subdomains.

10 Gb

We have 10Gb fabric to mount files over NFS. Machines with 10Gb support have an IP address in the class C range and we want to add DNS to these addresses.

1 Gb (cluster, cs)

We have two class C subnets on the 1Gb fabric: (CS) and (cluster). This means we have double the IP addresses on the 1Gb fabric that we have on the 10Gb fabric.

Any user accessing * and * is making calls on a 1Gb network.

Intra-cluster fabrics

The layout cluster has an Infiniband infrastructure. Wachowski has only a 1Gb infrastructure.


We have a backup power supply, with batteries last upgraded in 2019 (?). We’ve had a few outages since then and power has held up well.


HVAC systems are static and are largely managed by Facilities.

See full topology diagrams here.

A word about what's happening between files and the drives they live on.

New sysadmins

These pages will be helpful for you if you're just starting in the group:

Note: you'll need to log in with wiki credentials to see most Sysadmin pages.

Additional information

These pages contain a lot of the most important information about our systems and how we operate.

Technical docs

Common tasks

Group and institution information