Sysadmin

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

Common Tasks

• Welcoming a new sysadmin
• Useful ssh information for admins
• Recurring tasks - e.g. software updates, hardware replacements
• Slack and GitLab integration
• Ticket tracking for current projects
• User Management
  • Contacting all users
  • Reset password
• Software installation
  • Installing software under modules
• Monitoring
• Backup
• Add a computer
  • Setting up Lovelace Lab Machines
• Senior projects
• Shutdown and Boot up
• Password managers
• Server safety
• Upgrading SSL Certificates
  • Generating SSL Certificates
• Launch a process at startup
• Working with ITS

Services

• Cluster Overview and additional details
• Jupyterhub and NBGrader
• Apache2
• Databases
• DNS and DHCP
• VirtualBox
• Xen Server
• X Applications
• Bash startup scripts

For old documentation, see: Old Wiki Information

Machines and Brief Descriptions of Services

See full topology diagrams here.

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

CS Machines

NET (vm1)

LDAP Server DNS DHCP Backup to Dali: etc, var

WEB (vm2)

Mailman Mail Stack Apache2 PostgresQL MySQL Wiki Backup to Dali: etc, var

TOOLS (vm3)

Jupyterhub Server Software Modules NginX SSH Users Backup to Dali: etc, var, mnts, sage

BABBAGE

Firewall

BOWIE

PostgreSQL Docker Weather Monitoring Energy Monitoring Backup to Dali: etc, var

SMILEY

XenDocs NET WEB NFS Backup to Dali: etc, var

Cluster Machines

HOPPER

Users SSH NFS server LDAP server Software Modules PostgreSQL Wiki Apache2 DNS DHCP Backup to Indiana: etc, var, cluster

INDIANA

New Storage Server

DALI

Storage Server Gitlab Backups NginX Backup to Indiana (/media/r10_vol/backups/): etc, var/opt/gitlab/backups

AL-SALAM

WebMO Software Modules Apache2 Backup to Indiana: etc, var

WHEDON

Software Modules Backups to Indiana: etc, var

LAYOUT

Jupyterhub Server Software Modules NginX Apache2 WebMO Backup to Indiana: etc, var

BRONTE

Software Modules Backup to Indiana: etc, var, nbserver

POLLOCK

Software Modules WebMO NginX Backup to Indiana: etc, var

KAHLO

Storage Server Backups NginX Backup to Indiana: etc, var

BIGFE

Software Modules Hosts BCCD related repositories and distributions.

T-VOC

Software Modules

ELWOOD

Software Modules Used by BCCD to host www.bccd.net and www.littlefe.net. Will be deprecated when BCCD project offloads their sites onto cloud-based hosting platforms.

krasner

Docker platform on an old lovelace machine upgraded to have 16GB of RAM.

Switches

SG538SF02J

Model: HP Procurve 3400cl Ports: 24 Backplane bandwidth: 88 Gbps 64 million pps Memory: 2MB packet buffer 16 MB dual flash 128 MB SDRAM Cut-through switching: No Unused as of May 12, 2017

CN63FP762S

Model: HP 2530-24G Ports: 24 Switching Capacity: 56 Gbps 41.6 million pps Memory: 1.5 MB packet buffer 256 MB flash 128 MB DDR3 DIMM Cut-through switching: No Connected to Al-Salam as of May 12, 2017

SG525SG025

Model: HP Procurve 3400cl Ports: 24 Backplane bandwidth: 88 Gbps 64 million pps Memory: 2MB packet buffer 16 MB dual flash 128 MB SDRAM Cut-through switching: No Connected to layout and whedon as of May 12, 2017

Netgear JGS524

Current cluster head-node Unmanaged (no console/configuration) Ports: 24 Switching bandwidth: 48 Gbps 1.5 million pps Memory: 2MB packet buffer Cut-through switching: No Connected to Al-Salam, Hopper, Pollock, Nagios, Dali, Kahlo, Bronte as of May 12, 2017

cs-main

Model: HP 5920AF-24XG Ports: 24 Backplane bandwidth: 480 Gbps 367 million pps Memory: 3.6 GB packet buffer 256 MB dual flash 2 GB SDRAM Cut-through switching: Yes IP Address: 159.28.31.66 Connected to layout, kahlo, and dali as of May 12, 2017

5500denniscs-sw1

Model: HP 5500 JG542A Ports: 24 Backplane bandwidth: 224 Gbps 166.6 million pps Memory: 6 MB packet buffer 512 MB dual flash 1 GB SDRAM Cut-through switching: No IP Address: 159.28.31.67 Connected to Babbage, Bowie, Nagios, and the cluster's netgear switch (via port 14) as of May 12, 2017