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= Machines and Brief Descriptions of Services =
This is the hub for the CS sysadmins on the wiki.


<div class="center" style="width: auto; margin-left: auto; margin-right: auto;"><big><big><big>CS Machines</big></big></big></div>
= Overview =
{| style="float:left; margin-right:2px;"
[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!]
| style="height:40px; width:150px; text-align:center; background-color:#ADDFFF; border-left:solid 5px #ADDFFF; border-top:solid 5px #ADDFFF; border-bottom:solid 1px white; border-right:solid 5px      #ADDFFF; font-size:120%;" | HOME <br> (vm0)
|-
| style="height:135px; width:150px; background-color:#ADDFFF; border-left:solid 5px #ADDFFF; border-bottom:solid 5px #ADDFFF; border-right:solid 5px #ADDFFF;" | Users <br> SSH <br> NFS
|}


{| style="float:left; margin-right:2px;"
== Server room ==
| style="height:40px; width:150px; text-align:center; background-color:#54C571; border-left:solid 5px #54C571; border-top:solid 5px #54C571; border-bottom:solid 1px white; border-right:solid 5px #54C571; font-size:120%;" | NET <br> (vm1)
|-
| style="height:135px; width:150px; background-color:#54C571; border-left:solid 5px #54C571; border-bottom:solid 5px #54C571; border-right:solid 5px #54C571;" | LDAP server <br> DNS <br> DHCP
|}


{| style="float:left; margin-right:2px;"
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]].
| style="height:40px; width:150px; text-align:center; background-color:#E77471; border-left:solid 5px #E77471; border-top:solid 5px #E77471; border-bottom:solid 1px white; border-right:solid 5px #E77471; font-size:120%;" | WEB <br> (vm2)
|-
| style="height:135px; width:150px; background-color:#E77471; border-left:solid 5px #E77471; border-bottom:solid 5px #E77471; border-right:solid 5px #E77471;" | Mailman <br> Mail Stack <br> Apache2 <br> PostgresQL <br> MySQL <br> Wiki
|}


{| style="float:left; margin-right:2px;"
Columns: machine name, IPs, type (virtual, metal), purpose, dies, cores, RAM
| style="height:40px; width:150px; text-align:center; background-color:#C38EC7; border-left:solid 5px #C38EC7; border-top:solid 5px #C38EC7; border-bottom:solid 1px white; border-right:solid 5px #C38EC7; font-size:120%;" | TOOLS <br> (vm3)
|-
| style="height:135px; width:150px; background-color:#C38EC7; border-left:solid 5px #C38EC7; border-bottom:solid 5px #C38EC7; border-right:solid 5px #C38EC7;" | [[Sysadmin:SageNB Server | SageNB Server]] <br> [[Sysadmin:Jupyterhub Notebook Server | Jupyterhub Server]] <br> [[Sysadmin:Software Modules | Software Modules]] <br> NginX
|}


{| style="float:left; margin-right:2px;"
== Compute Resources ==
| style="height:55px; width:150px; text-align:center; background-color:#E3A869; border-left:solid 5px #E3A869; border-top:solid 5px #E3A869; border-bottom:solid 1px white; border-right:solid 5px #E3A869; font-size:120%;" | BABBAGE
[https://wiki.cs.earlham.edu/index.php/Sysadmin:Computer_Resources Machines and VMs related information here!]
|-
| style="height:135px; width:150px; background-color: #E3A869; border-left:solid 5px #E3A869; border-bottom:solid 5px #E3A869; border-right:solid 5px #E3A869;" | Firewall
|}


{|
| style="height:55px; width:150px; text-align:center; background-color:#EEDC82; border-left:solid 5px #EEDC82; border-top:solid 5px #EEDC82; border-bottom:solid 1px white; border-right:solid 5px #EEDC82; font-size:120%;" | [[Sysadmin:Servers:Proto | PROTO]]
|-
| style="height:135px; width:150px; background-color: #EEDC82; border-left:solid 5px #EEDC82; border-bottom:solid 5px #EEDC82; border-right:solid 5px #EEDC82;" | Weather Monitoring <br> GPS/NTP <br> Energy Monitoring
|}
----


<div class="center" style="width: auto; margin-left: auto; margin-right: auto;"><big><big><big>Cluster Machines</big></big></big></div>
== Network ==


{| style="float:left; margin-right:2px;"
We have two network fabrics linking the machines together. There are three subdomains.
| style="height:55px; width:150px; text-align:center; background-color:#0099cc; border-left:solid 5px #0099cc; border-top:solid 5px #0099cc; border-bottom:solid 1px white; border-right:solid 5px      #0099cc; font-size:120%;" | HOPPER
|-
| style="height:200px; width:150px; background-color:#0099cc; border-left:solid 5px #0099cc; border-bottom:solid 5px #0099cc; border-right:solid 5px #0099cc;" | Users <br> SSH <br> NFS <br> [[Sysadmin:Software Modules | Software Modules]] <br> PostgresQL <br> Wiki <br> Apache2 <br> DNS <br> DHCP
|}


{| style="float:left; margin-right:2px;"
=== 10 Gb ===
| style="height:55px; width:150px; text-align:center; background-color:#ffdb4d; border-left:solid 5px #ffdb4d; border-top:solid 5px #ffdb4d; border-bottom:solid 1px white; border-right:solid 5px #ffdb4d; font-size:120%;" | DALI
|-
| style="height:200px; width:150px; background-color:#ffdb4d; border-left:solid 5px #ffdb4d; border-bottom:solid 5px #ffdb4d; border-right:solid 5px #ffdb4d;" | [[Sysadmin:Gitlab | Gitlab]] <br> Backups <br> NginX
|}


{| style="float:left; margin-right:2px;"
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.
| style="height:55px; width:150px; text-align:center; background-color:#ff4d94; border-left:solid 5px #ff4d94; border-top:solid 5px #ff4d94; border-bottom:solid 1px white; border-right:solid 5px #ff4d94; font-size:120%;" | AL-SALAM
|-
| style="height:200px; width:150px; background-color:#ff4d94; border-left:solid 5px #ff4d94; border-bottom:solid 5px #ff4d94; border-right:solid 5px #ff4d94;" | WebMO <br> [[Sysadmin:Software Modules | Software Modules]] <br> Apache2
|}


{| style="float:left; margin-right:2px;"
=== 1 Gb (cluster, cs) ===
| style="height:55px; width:150px; text-align:center; background-color:#39ad39; border-left:solid 5px #39ad39; border-top:solid 5px #39ad39; border-bottom:solid 1px white; border-right:solid 5px #39ad39; font-size:120%;" | LAYOUT
|-
| style="height:200px; width:150px; background-color:#39ad39; border-left:solid 5px #39ad39; border-bottom:solid 5px #39ad39; border-right:solid 5px #39ad39;" | [[Sysadmin:Jupyterhub Notebook Server | Jupyterhub Server]] <br> [[Sysadmin:Software Modules | Software Modules]] <br> NginX <br> Apache2 <br> WebMO
|}


{| style="float:left; margin-right:2px;"
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.
| style="height:55px; width:150px; text-align:center; background-color:#0099cc; border-left:solid 5px #0099cc; border-top:solid 5px #0099cc; border-bottom:solid 1px white; border-right:solid 5px #0099cc; font-size:120%;" | BRONTE
|-
| style="height:200px; width:150px; background-color:#0099cc; border-left:solid 5px #0099cc; border-bottom:solid 5px #0099cc; border-right:solid 5px #0099cc;" |  [[Sysadmin:Software Modules | Software Modules]]
|}


{| style="float:left; margin-right:2px;"
Any user accessing *.cluster.earlham.edu and *.cs.earlham.edu is making calls on a 1Gb network.
| style="height:55px; width:150px; text-align:center; background-color:#0099cc; border-left:solid 5px #0099cc; border-top:solid 5px #0099cc; border-bottom:solid 1px white; border-right:solid 5px #0099cc; font-size:120%;" | POLLOCK
|-
| style="height:200px; width:150px; background-color:#0099cc; border-left:solid 5px #0099cc; border-bottom:solid 5px #0099cc; border-right:solid 5px #0099cc;" |  [[Sysadmin:Software Modules | Software Modules]] <br> WebMO <br> NginX
|}


<br><br><br><br><br><br><br><br><br><br><br><br>
=== Intra-cluster fabrics ===


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


== Systems Administration Documentation ==
== Power ==
===Most of these things below are OLD===
[[Sysadmin:Old | Old Wiki Information]]


{|
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.
|- valign:"top"
|
<div style="border:10px solid #E3E0FA; padding:5px; width:230px; height:400px">
<div style="background-color:#D7D1F8; padding:5px;">
=== Works in Progress ===
</div>
* [[Sysadmin:Setting up Lovelace Lab Machines | Setting up Lovelace Lab Machines]]


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


| style="float:left;" |
HVAC systems are static and are largely managed by Facilities.
|
<div style="border:10px solid #E0EAF8; padding:5px; width:230px; height:400px">
<div style="background-color:#CEDEF4; padding:5px;">


=== Admin Tasks ===
[[Topology|See full topology diagrams here.]]
</div>
* [[Sysadmin:Nagios | Nagios Monitoring ]]
* [[Sysadmin:Backup|Backup]]
* [[Sysadmin:Contacting all users|Contacting all users]]
* [[Sysadmin:New Sysadmins | Welcoming a new sysadmin to the fold]]
* [[Sysadmin:AddComputer|Add a computer]]


[[Sysadmin:Layers of abstraction for filesystems|A word about what's happening between files and the drives they live on.]]


<!-- This has to stay as part of the formatting -->
= New sysadmins =
</div>
| style="float:left;" |
|
<div style="border:10px solid #FFDFFF; padding:5px; width:230px; height:400px;">
<div style="background-color:#FFCEFF; padding:5px;">


=== Services ===
These pages will be helpful for you if you're just starting in the group:
</div>
* [[Sysadmin:Services:Apache2|Apache2]]
* [[Sysadmin:Services:Databases|Databases]]
* [[Sysadmin:Services:DNS and DHCP|DNS and DHCP]]
* [[Sysadmin:User Management|User Management]]
* [[Sysadmin:Services:Virtualization | Virtualization]]
* [[Sysadmin:Services:XenServerSetup | Xen Server]]


<!-- This has to stay as part of the formatting -->
* [[Sysadmin:New Sysadmins | Welcoming a new sysadmin ]]
</div>
* [[Sysadmin:Troubleshooting|General troubleshooting tips for admins]]
||
* [[Sandbox Notes|Sandbox Notes]]
|
* [[Password managers]]
<div style="border:10px solid #DBF0F7; padding:5px; width:230px; height:400px;">
* [[Server safety]]
<div style="background-color:#C9EAF3; padding:5px;">
* [https://code.cs.earlham.edu/sysadmin/ticket-tracker Ticket tracking for current projects]


=== Servers ===
Note: you'll need to log in with wiki credentials to see most Sysadmin pages.
</div>


<!-- 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.
|- valign="top"
|
<div style="border:10px solid #FFFFC8; padding:5px; width:230px; height:400px;">
<div style="background-color:#FFFFB5; padding:5px;">


=== Lovelace Workstations ===
===Handy Tools===
</div>
* [https://explore.cluster.earlham.edu/packages Porter's Package Explorer]


<!-- This has to stay as part of the formatting -->
===Technical docs===
</div>
| style="float:left;" |
|
<div style="border:10px solid #D6F8DE; padding:5px; width:230px; height:400px;">
<div style="background-color:#BDF4CB; padding:5px;">


=== Networking ===
* [https://code.cs.earlham.edu/sysadmin/ticket-tracker Ticket tracking for current projects]
</div>
* [[Server safety]]
* [[Sysadmin:Networking:NetworkLayout|Network Layout (as of 08/2006)]]
* [[Sysadmin:Backup|Backup]]
* [[Sysadmin:Networking:D224 cable plant|D224 cable plant]]
* [[Sysadmin:Monitoring | Monitoring ]]
* [[Sysadmin:Networking:Fiber plans|Fiber plans]]
* [[Sysadmin:Access and Restrictions | Access and Restrictions ]]
* [[Sysadmin:Networking:Switches|Switches]]
* [[Sysadmin:SSH|SSH info relevant to admins]]
* [[Sysadmin:Networking:Rack notes|Rack notes]]
* [[Sysadmin:User Management | User Management]] and [[Sysadmin:LDAP|LDAP]] generally
* [[Sysadmin:Networking:Public|Public Network]]
* [[Sysadmin:Jupyterhub Notebook Server|Jupyterhub]] and [[Nbgrader notes|NBGrader]]
* [[Sysadmin:Networking:NetworkTopo|Old Network Topo Figures]]
* [[Sysadmin:MailStack|Email service]]
* [[Sysadmin:Networking:NetworkDiagram|Network layout (May 2007)]]
* [[Sysadmin:XenDocs | Xen Server]]
* [[Sysadmin:Networking:Alternate Network Path|Alt Network path]]
* [[Sysadmin:NFS|Network File System (NFS)]]
* [[Sysadmin:UPS Setup]]
* [[Sysadmin:Web Servers|Web Servers and Websites]]
* [[Sysadmin:Services:Databases|Databases]]
* [[Sysadmin:DNS & DHCP|DNS and DHCP]]
* [[Sysadmin:AWS|AWS]]
* [[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]]


<!-- This has to stay as part of the formatting -->
===Common tasks===
</div>
* [[Sysadmin:Recurring Tasks | Recurring tasks - e.g. software updates, hardware replacements]]
| style="float:left;" |
* [[Sysadmin:Contacting all users|Contacting all users]]
|
* [[Reset password]]
<div style="border:10px solid #F0DDD5; padding:5px; width:230px; height:400px;">
* [[Sysadmin:Software installation | Software installation]]
<div style="background-color:#E4C0B1; padding:5px;">
* [[Modules | Installing software under modules ]]  
 
* [[Sysadmin:AddComputer|Add a computer to CS or cluster domains]]
=== Miscellaneous ===
* [[Senior projects|Supporting senior projects]]
</div>
* [[ShutdownProcedure|How to do a planned shutdown and reboot of the system]]
* [[SysadminContactInfo| Contact Information]]
** [[Sysadmin:TestingServices | Testing services]] (after a reboot, upgrade, change in the phase of the moon, etc.)
* [[Sysadmin:ImportantInfo:PhoneNumbers| Phone Numbers]]
* [[Sysadmin:Upgrading SSL Certificate | Upgrading SSL Certificates ]]
* [[Sysadmin:ImportantInfo:WebSites| Web Sites]]
* [[Sysadmin:Launch at startup|Launch a process at startup]]
* [[Sysadmin:ImportantInfo:AuthenticationInfo| Authentication Information]]
* [[Sysadmin:Psql-setup | setup psql for cs430 students]]
* [[Sysadmin:ImportantInfo:PowerFailure| Power Failure]]
* [[Sysadmin:ImportantInfo:UPS| UPS]]
* [[Sysadmin:ImportantInfo:SSLcerts| Generating SSL Certificates]]
* [[Sysadmin:Power draws| Power draws]]
* [[Sysadmin:ImportantInfo:SunHardware|Working with Sun Hardware]]
* [[Sysadmin:Passwords]]
* Patching
** [[LinuxKernelPatching|Linux Kernel Patching]]
* [[Sysadmin:SerialConsoleCableEnds|Cable Ends]]
* [[Sysadmin:VirtualizationComparison|NEW Virtualization Comparison]]


<!-- 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"