Cluster 2

Jump to navigation Jump to search

This is the default lab cluster.

Priorities and Policies

Special machines

Normally, you will just ssh to sgehead aka gimel from where you can do almost anything, including job management. A few things require licensing and must be done on special machines.

hypervisor 'he' hosts:

  • alpha - which is critical and runs foreman, DNS, DHCP, and other important services
  • beta - with runs LDAP authentication
  • epsilon - - cluster gateway from public internet
  • gamma - sun grid engine qmaster
  • phi - mysqld/excipients
  • psi for using the PG fortran compiler
  • ppilot is at http://zeta:9944/ - you must be on the Cluster 2 private network to use it
  • Tau is the web server for ZINC,
  • no other specia
  • zeta - Psicquic/pipeline pilot
  • Sigma can definitely go off and stay off. It was planned for a fingerprinting server, never done.

hypervisor 'aleph2' hosts:

  • alpha7 - This is to be the future architecture VM of the cluster (DNS/DHCP/Puppet/Foreman/Ansible). CentOS7.
  • kappa is licensing. ask me. ("i have no clue what this licenses. Turned off." - ben)
  • rho contains this wiki and also


  • to get from SVN, use svn ssh+svn

Hardware and physical location

  • 1856 cpu-cores for queued jobs
  • 128 cpu-cores for infrastructure, databases, management and ad hoc jobs.
  • 788 TB of high quality NFS-available disk
  • Our policy is to have 4 GB RAM per cpu-core unless otherwise specified.
  • Machines older than 3 years may have 2GB/core and 6 years old have 1GB/core.
  • Cluster 2 is currently stored entirely in Rack 0 which is in Row 0, Position 4 of BH101 at 1700 4th St (Byers Hall).
  • Central services are on he,aleph2,and bet
  • CPU
    • 3 Silicon Mechanics Rackform nServ A4412.v4 s, each comprising 4 computers of 32 cpu-cores for a total of 384 cpu-cores.
    • 1 Dell C6145 with 128 cores.
    • An HP DL165G7 (24-way) is sgehead
    • more computers to come from Cluster 0, when Cluster 2 is fully ready.
  • DISK
    • HP disks - 40 TB RAID6 SAS (new in 2014)
    • Silicon Mechanics NAS - new in 2014 - 77 TB RAID6 SAS (new in 2014)
    • A HP DL160G5 and an MSA60 with 12 TB SAS (disks new in 2014)

= Naming convention

  • The Hebrew alphabet is used for physical machines
  • Greek letters for VMs.
  • Functions (e.g. sgehead) are aliases (CNAMEs).
  • and domains both supported.

Disk organization

  • shin aka nas1 mounted as /nfs/db/ = 72 TB SAS RAID6. NOTE: ON BAND: $ sudo /usr/local/RAID\ Web\ Console\ 2/ to interact with raid controller. username: raid. pw: c2 pass
  • bet aka happy, internal: /nfs/store and psql (temp) as 10 TB SATA RAID10
  • elated on happy: /nfs/work only as 36 TB SAS RAID6
  • dalet exports /nfs/home & /nfs/home2

Special purpose machines - all

  • sgehead aka gimel.cluster - nearly the only machine you'll need.
  • psi.cluster - PG fortran compiler (if it only has a .cluster address means it has no public address)
  • portal aka epsilon - secure access
  • zeta.cluster - Pipeline Pilot
  • shin, bet, and dalet are the three NFS servers. You should not need to log in to them.
on teague desktop, /usr/local/RAID Web Console 2/ 
connect to shin on public network
raid /  C2 on shin
  • mysql1.cluster - general purpose mysql server (like former scratch)
  • pg1.cluster - general purpose postgres server
  • fprint.cluster - fingerprinting server

About our cluster