3.10 Power Down the Urika-GX System
Prerequisites
Instructions in this procedure require root access. This procedure assumes that the instructions are being carried
out on a 3 sub-rack system.
About this task
The instructions documented in the procedure should be following in the order listed to power off the Urika
®
-GX
system. For detailed information, or for troubleshooting issues, please contact Cray Support. It is assumed that
the instructions in procedure are being carried out on a 48 node system. Please use node IDs according to the
actual system configuration.
Procedure
1. Log on to the System Management Workstation (SMW) as root.
2. Power down the analytic applications using the
urika-stop
script.
root@smw:~
urika-stop
For more information, see the
urika-stop
man page.
3. Execute the
urika-state
command to ensure that analytic applications have shut down.
The HA Proxy service may still be running.
root@smw:~
urika-state
For more information, see the
urika-state
man page.
4. Unmount all external Lustre mounts.
This may not be required if
/mnt/lustre
or a Sonexion storage system are not used. For more information,
contact support.
root@smw:~
pall umount /mnt/lustre
5. Optional: Log on to a storage node (
nid00031
on a 3 sub-rack system), switch to the
lustre-utils
directory and stop Lustre if using a Direct Attached Lustre (DAL) storage system.
This step is needed only if a Direct Attached Lustre (DAL) is used. Do not perform this step if using the
Sonexion storage system.
root@nid00031:~
cd /etc/opt/cray/lustre-utils
root@nid00031:~
./lustre_control stop -a
6. Log on to the SMW.
7. Stop all the tenant VMs.
System Management
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