| 1 | == QCG BES/AR on separate Machine = |
| 2 | |
| 3 | 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: |
| 4 | * the machine is a submit host of the Torque Local Resource Manager, what further implies that: |
| 5 | * the machine share account information with the whole cluster (e.g. using LDAP or NIS), |
| 6 | * the torque-client and torque-devel packages are installed, |
| 7 | * the contents of the `/var/spool/pbs/server_name` points to the machine where the Torque `pbs_server` is running. |
| 8 | * the Smoa Computing host is added as `submit_host` in the Torque server configuration: |
| 9 | {{{ |
| 10 | #!div style="font-size: 90%" |
| 11 | {{{#!default |
| 12 | > qmgr |
| 13 | Max open servers: 4 |
| 14 | Qmgr: |
| 15 | set server submit_hosts += qcg.your.domain |
| 16 | set server submit_hosts += qcg |
| 17 | }}} |
| 18 | }}} |
| 19 | '''Note:''' You may need to add the Smoa Computing host in the `/etc/hosts.equiv` file. |
| 20 | |
| 21 | * 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). |
| 22 | * 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. |
| 23 | * the machine is administrative host of the Maui Scheduler, what further denotes that: |
| 24 | * The maui-client package is installed. |
| 25 | * 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. |
| 26 | * 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. |
| 27 | |
| 28 | |
| 29 | [[Image(QCG_DeploymentConcept.png, align=center)]] |