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__NOTOC__
This is the hub for the CS sysadmins on the wiki.
Important Notes:
* '''''ALL of the admin '''''  '''CVS/SVN stuff has been centralized to trac.cs.earlham.edu/admin'''.  You'll need to create a username/password for yourself by running (from quark):
:<code>htpasswd /usr/local/trac/adminontrac.htpasswd <username></code>
* To check out the repository, run (from quark):
:<code>svn checkout file:///clients/users/svn/admin</code>
* [[Sysadmin:IRC|Chatting on IRC]]


'''Curent Sysadmins:''' Elena, Aaron, Kristin, Michael, Wilson, Ivan
= Overview =
[https://docs.google.com/drawings/d/1XaULz5IxXV_BZQjrko3QJ8wV5aXsSTYcSWxxT49OyZk/edit | If you're visually inclined, we have a colorful and easy-to-edit map of our servers here!]


== Server room ==


{| class="wikitable"
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 [[Sysadmin:Server Room|this page]].
|-
! Header text !! Header text !! Header text
|-
| Example || Example || Example
|-
| Example || Example || Example
|-
| Example || Example || Example
|}


== Systems Administration Documentation ==
Columns: machine name, IPs, type (virtual, metal), purpose, dies, cores, RAM


{|
== Compute Resources ==
|- valign="top"
[https://wiki.cs.earlham.edu/index.php/Sysadmin:Computer_Resources Machines and VMs related information here!]
|
<div style="border:10px solid #E3E0FA; padding:5px">
<div style="background-color:#D7D1F8; padding:5px;">
=== Works in Progress ===
</div>


* [[Sysadmin:todo13|To do before Fall 13 starts]]
* [[Sysadmin:handbook|Handbook (WIP)]]
* [[Sysadmin:Temporary Page | Temporary Page for Wiki Adjustment]]
* [[Sysadmin: Upgrading FreeBSD | Upgrading FreeBSD]]
* [[Sysadmin:Fail2Ban on FreeBSD | Fail2Ban on FreeBSD]]
* [[Sysadmin:Running Nessus | Running Nessus]]
* [[Sysadmin:SrvcCheck|Things to check when things go down]]
* [[Sysadmin:AaronsHowTo| Aaron's How-To Pages]]
* [[Sysadmin:Sonresources| Son's "Cook" Pages]]
* [[Sysadmin:Installing ACLs]]


<!-- This has to stay as part of the formatting -->
== Network ==
</div>
| style="width:50px;" |
|
<div style="border:10px solid #E0EAF8; padding:5px;">
<div style="background-color:#CEDEF4; padding:5px;">


=== Admin Tasks ===
We have two network fabrics linking the machines together. There are three subdomains.
</div>


* [[Sysadmin:Start/Shutdown|Start/Shutdown]]
=== 10 Gb ===
* [[Sysadmin:Backup|Backup]] (needs to be updated after new setup)
 
* [[Sysadmin:Contacting all users|Contacting all users]]
We have 10Gb fabric to mount files over NFS. Machines with 10Gb support have an IP address in the class C range 10.10.10.0/24 and we want to add DNS to these addresses.
* [[Sysadmin:AddComputer|Add a computer]]
 
* [[Sysadmin:New Sysadmins|Welcoming a new sysadmin to the fold]]
=== 1 Gb (cluster, cs) ===
* [[Sysadmin:RT Ticketing|RT Ticketing]]
 
We have two class C subnets on the 1Gb fabric: 159.28.22.0/24 (CS) and 159.28.23.0/24 (cluster). This means we have double the IP addresses on the 1Gb fabric that we have on the 10Gb fabric.
 
Any user accessing *.cluster.earlham.edu and *.cs.earlham.edu is making calls on a 1Gb network.
 
=== Intra-cluster fabrics ===
 
The layout cluster has an Infiniband infrastructure. Wachowski has only a 1Gb infrastructure.


<!-- This has to stay as part of the formatting -->
== Power ==
</div>
|}


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 ==
|- valign="top"
|


<div style="border:10px solid #FFDFFF; padding:5px;">
HVAC systems are static and are largely managed by Facilities.
<div style="background-color:#FFCEFF; padding:5px;">


=== Services ===
[[Topology|See full topology diagrams here.]]
</div>
* [[Sysadmin:Services:Apache2|Apache2]]
* [[Sysadmin:Services:Databases|Databases]]
* [[Sysadmin:Services:DNS and DHCP|DNS and DHCP]]
* [[Sysadmin:Services:Email|Email]]
* [[Sysadmin:Services:SystemImager|System Imager]]
* [[Sysadmin:Services:LVM|LVM]]
* [[Sysadmin:positron|NFS]]
* [[Sysadmin:Services:Printers|Printers]]
* [[Sysadmin:Services:TracSVN|Trac + svn]]
* [[Sysadmin:User Management|User Management]]
* [[Sysadmin:Services:Virtualization | Virtualization]]
* [[Sysadmin:Services:ZFS | ZFS]]


<!-- This has to stay as part of the formatting -->
[[Sysadmin:Layers of abstraction for filesystems|A word about what's happening between files and the drives they live on.]]
</div>
| style="width:50px;" |
|


<div style="border:10px solid #DBF0F7; padding:5px;">
= New sysadmins =
<div style="background-color:#C9EAF3; padding:5px;">


=== Servers ===
These pages will be helpful for you if you're just starting in the group:
</div>
* [[Sysadmin:PhysicalServers | Physical Servers]]
* [[Sysadmin:VirtualServersAndJails | Virtual Servers and Jails]]
* [[Sysadmin:SvcChart|Service Chart]]
* [[Sysadmin:Monitoring|Monitoring]]
* [[Sysadmin:Quark | Quark]]
* [[Sysadmin:Forty-Two | Forty-two]]
* [[Sysadmin:Lovelace | Lovelace]]
* [[Sysadmin:Proto | Proto]]
* [[Sysadmin:RetiredServers | Retired Servers]]


<!-- This has to stay as part of the formatting -->
* [[Sysadmin:New Sysadmins | Welcoming a new sysadmin ]]
</div>
* [[Sysadmin:Troubleshooting|General troubleshooting tips for admins]]
| style="width:50px;" |
* [[Sandbox Notes|Sandbox Notes]]
|
* [[Password managers]]
<div style="border:10px solid #FFFFC8; padding:5px;">
* [[Server safety]]
<div style="background-color:#FFFFB5; padding:5px;">
* [https://code.cs.earlham.edu/sysadmin/ticket-tracker Ticket tracking for current projects]


=== ACL Workstations ===
Note: you'll need to log in with wiki credentials to see most Sysadmin pages.
</div>
* [[Sysadmin:ACL:Installation|ACL Installation procedure]]
* [[Sysadmin:AclImage|ACL Package Information]]
* [[Sysadmin:Acl Locations|ACL Locations]]
* [[Sysadmin:Software for Chemistry ACLs|Software for Chemistry ACLs]]
* [[Sysadmin:ACL:UpProp|Proposed ACL Update policy]]


<!-- This has to stay as part of the formatting -->
= Additional information =
</div>
|}


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


{|
===Handy Tools===
|- valign="top"
* [https://explore.cluster.earlham.edu/packages Porter's Package Explorer]
|
<div style="border:10px solid #D6F8DE; padding:5px;">
<div style="background-color:#BDF4CB; padding:5px;">
=== Networking ===
</div>
* [[Sysadmin:Networking:NetworkLayout|Network Layout (as of 08/2006)]]
* [[Sysadmin:Networking:D224 cable plant|D224 cable plant]]
* [[Sysadmin:Networking:Fiber plans|Fiber plans]]
* [[Sysadmin:Networking:Switches|Switches]]
* [[Sysadmin:Networking:Rack notes|Rack notes]]
* [[Sysadmin:Networking:Public|Public Network]]
* [[Sysadmin:Networking:NetworkTopo|Old Network Topo Figures]]
* [[Sysadmin:Networking:NetworkDiagram|Network layout (May 2007)]]
* [[Sysadmin:Networking:Alternate Network Path|Alt Network path]]
* [[Sysadmin:UPS Setup]]


<!-- This has to stay as part of the formatting -->
===Technical docs===
</div>
| style="width:50px;" |
|
<div style="border:10px solid #F0DDD5; padding:5px;">
<div style="background-color:#E4C0B1; padding:5px;">


=== Miscellaneous ===
* [https://code.cs.earlham.edu/sysadmin/ticket-tracker Ticket tracking for current projects]
</div>
* [[Server safety]]
* [[SysadminContactInfo|Contact Information]]
* [[Sysadmin:Backup|Backup]]
* [[Sysadmin:ImportantInfo:PhoneNumbers|Phone Numbers]]
* [[Sysadmin:Monitoring | Monitoring ]]
* [[Sysadmin:ImportantInfo:WebSites|Web Sites]]
* [[Sysadmin:Access and Restrictions | Access and Restrictions ]]
* [[Sysadmin:ImportantInfo:AuthenticationInfo|Authentication Information]]
* [[Sysadmin:SSH|SSH info relevant to admins]]
* [[Sysadmin:ImportantInfo:PowerFailure|Power Failure]]
* [[Sysadmin:User Management | User Management]] and [[Sysadmin:LDAP|LDAP]] generally
* [[Sysadmin:ImportantInfo:UPS|UPS]]
* [[Sysadmin:Jupyterhub Notebook Server|Jupyterhub]] and [[Nbgrader notes|NBGrader]]
* [[Sysadmin:ImportantInfo:SSLcerts|Generating SSL Certificates]]
* [[Sysadmin:MailStack|Email service]]
* [[Sysadmin:Power draws|Power draws]]
* [[Sysadmin:XenDocs | Xen Server]]
* [[Sysadmin:ImportantInfo:SunHardware|Working with Sun Hardware]]
* [[Sysadmin:NFS|Network File System (NFS)]]
* [[Sysadmin:Passwords]]
* [[Sysadmin:Web Servers|Web Servers and Websites]]
* Patching
* [[Sysadmin:Services:Databases|Databases]]
** [[LinuxKernelPatching|Linux Kernel Patching]]
* [[Sysadmin:DNS & DHCP|DNS and DHCP]]
** [[FreeBSDKernelPatching|FreeBSD Kernel Patching]]
* [[Sysadmin:AWS|AWS]]
* [[Sysadmin:SerialConsoleCableEnds|Cable Ends]]
* [[Bash_start_up_script|Bash startup scripts]]
* [[Sysadmin:VirtualBox | VirtualBox]]
* [[X Applications]]
* [[Sysadmin:Services:ClusterOverview|Cluster Overview]] and [[Sysadmin:Ccg-admin|additional details]]
* [[Sysadmin:Firewall|Firewall]] running on babbage.cs.e.e
* [[Sysadmin:Setting_up_Lovelace_Lab_Machines|Setting up Lab Machines]]
 
===Common tasks===
* [[Sysadmin:Recurring Tasks | Recurring tasks - e.g. software updates, hardware replacements]]
* [[Sysadmin:Contacting all users|Contacting all users]]
* [[Reset password]]
* [[Sysadmin:Software installation | Software installation]]
* [[Modules | Installing software under modules ]]  
* [[Sysadmin:AddComputer|Add a computer to CS or cluster domains]]
* [[Senior projects|Supporting senior projects]]
* [[ShutdownProcedure|How to do a planned shutdown and reboot of the system]]
** [[Sysadmin:TestingServices | Testing services]] (after a reboot, upgrade, change in the phase of the moon, etc.)
* [[Sysadmin:Upgrading SSL Certificate | Upgrading SSL Certificates ]]
* [[Sysadmin:Launch at startup|Launch a process at startup]]
* [[Sysadmin:Psql-setup | setup psql for cs430 students]]


<!-- This has to stay as part of the formatting -->
===Group and institution information===
</div>
* [[Sysadmin:CS-ITS Interoperability|Working with ITS]]
|}
* [[Sysadmin:Recurring spending | Recurring spending ]]
* [[Sysadmin:SlackAndGitLab | Slack and GitLab integration]]

Latest revision as of 14:54, 10 October 2025

This is the hub for the CS sysadmins on the wiki.

Overview

| 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 Resources

Machines and VMs related information here!


Network

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 10.10.10.0/24 and we want to add DNS to these addresses.

1 Gb (cluster, cs)

We have two class C subnets on the 1Gb fabric: 159.28.22.0/24 (CS) and 159.28.23.0/24 (cluster). This means we have double the IP addresses on the 1Gb fabric that we have on the 10Gb fabric.

Any user accessing *.cluster.earlham.edu and *.cs.earlham.edu is making calls on a 1Gb network.

Intra-cluster fabrics

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

Power

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

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.

Handy Tools

Technical docs

Common tasks

Group and institution information

Retrieved from "https://wiki.cs.earlham.edu/index.php?title=Sysadmin&oldid=18282"