Maintenance2010x09x06 < LCGTier2

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KeyWords: SysAdmin, [[Maintenance]]

---+!! Scheduled Downtime on 2010-09-06

Our Phoenix Cluster needs some maintenance operations that require a downtime. We will take the next maintenance window (first Monday of the month) to do them.

It will start on Monday 6 at 9:30 and last until Monday 6 at 17:00.

*All queues will be drained three days before*. We will reserve an scheduled downtime until Tuesday 7th at 17:00 for safety, but will open the queues and exit the downtime as soon as we check all the systems work properly. 

%TOC%

---++!! Summary of interventions

   * Upgrade dCache version to 1.9.5-22
   * Upgrade of gLite to revision 18
   * Upgrade to Lustre 1.8.4
   * Upgrade the driver on the OSS's to access the JBots in Lustre
   * Update some host certificates
---

---++ Upgrade dCache version to 1.9.5-22

dCache is still moving forward with the Golden Release that will be around for long time, and we want to be up-to-date. It solves a number of bugs, some may have already affected us, some may not.

We will then upgrade the version from 1.9.5-19 to 1.9.5-22. That requires to shut down the service, but we will try to bring it up as soon as possible so that, even though we are in downtime, transfers from/to other sites still work.

---++ Upgrade of gLite to revision 18

A new release of gLite is out, we want to upgrade all grid machines to the latest possible version.

---++ Upgrade to Lustre 1.8.4

A new version of Lustre is out. It solves a known bug in the MDS that has affected us.

---++ Upgrade the driver on the OSSs to access the JBots in Lustre

Also, there is a new release of the driver that controls the disk controllers in the OSS's. We think that it may solve some stability issues with the disks.

---++ Update some host certificates

The following certificates are about to expire: storage01-02, se01-28, *vobox, mon, ce01, arc01, and we will update them all.

-- Main.PabloFernandez - 2010-08-30
MaintenanceForm
When	Monday 6, September 2010
Downtime required	yes
Done	no
This topic: LCGTier2 > WebHome > ServiceInformation > AdminArea > Maintenance2010x09x06
Topic revision: r1 - 2010-08-30 - PabloFernandez