QCG BES/AR on separate Machine

If you plan to install the Smoa Computing (QCG BES/AR) service on a separate machine (for performance or security reasons) you must assure that:

• the machine is a submit host of the Torque Local Resource Manager, what further implies that:
  • the machine share account information with the whole cluster (e.g. using LDAP or NIS),
  • the torque-client and torque-devel packages are installed,
  • the contents of the /var/spool/pbs/server_name points to the machine where the Torque pbs_server is running.
  • the Smoa Computing host is added as submit_host in the Torque server configuration:

      > qmgr
      Max open servers: 4
      Qmgr:
      set server submit_hosts += qcg.your.domain
      set server submit_hosts += qcg
    

    Note: You may need to add the Smoa Computing host in the /etc/hosts.equiv file.

• the machine mounts /home filesystem of the cluster. Alternatively you can mount any other file system that can be used by any user (e.g. the scratch filesystem).
• the /var/spool/pbs/server_logs directory is exported in read-only mode (e.g. using NFS or Lustre) from Torque server to this machine (this share must be mounted locally as /var/spool/pbs/server_logs). The Torque DRMAA library for scalability reason can be configured to use batch system logs to get notified about jobs state changes.
• the machine is administrative host of the Maui Scheduler, what further denotes that:
  • The maui-client package is installed.
  • On the Smoa Computing machine modify the SERVERHOST section of the /var/spool/maui/maui.cfg file. It must points to the machine where the maui daemon is running.
  • On the Maui server machine modify the ADMINHOSTS section of the /var/spool/maui/maui.cfg file and add the Smoa Computing host to the list of admin hosts.