System News
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Archived Sun SysAdmin Articles
03 Feb 2016
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Troubleshooting I/O Load in a Solaris OpenStack Cloud [49638]
By Dave Miner

Dave blogs, "The other day we noticed that a number of guests running on our Solaris OpenStack cloud were very lethargic, with even simple operations like listing boot environments with beadm taking a long time, let alone more complex things like installing packages. It was easy to rule out CPU load on the compute nodes, as prstat quickly showed me that load averages were not at all high on the compute nodes hosting my guests.

The next suspect was disk I/O. When you're running on bare metal with local disks, this is pretty easy to check; things like zpool status, zpool iostat, and iostat provide a pretty good high-level view of what's going on, and tools like prstat or truss might help identify the culprit. In an OpenStack cloud it's not nearly that simple. It's all virtual machines, the "disks" are ZFS volumes served up as LUNs by an iSCSI target, and with a couple hundred VM's running on a bunch of compute nodes, you're now searching for the needle(s) in a haystack. Where to start?..."
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19 Jan 2016
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January 2016 Critical Patch Update Released [49288]
By Eric P. Maurice

Eric P. Maurice blogs, "Oracle today released the January 2016 Critical Patch Update. With this Critical Patch Update release, the Critical Patch Update program enters its 11th year of existence (the first Critical Patch Update was released in January 2005). As a reminder, Critical Patch Updates are currently released 4 times a year, on a schedule announced a year in advance. Oracle recommends that customers apply this Critical Patch Update as soon as possible.

The January 2016 Critical Patch Update provides fixes for a wide range of product families; including:..."
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15 Jan 2016
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SysAdmin and Systems Developer Newsletter [49143]
OTN Systems Hub

The January "SysAdmin and Systems Developer Newsletter" is now available. Articles include:

  • Oracle Technology Network - Virtual Technology Summit Replay Library
  • How to Build a Cassandra Multinode Database Cluster on Oracle Solaris 11.3 with LUN Mirroring and IP Multipathing
  • Oracle VM Performance and Tuning (Parts 1 to 6)
  • OTN Garage' is now called 'OTN Systems Hub' ...

The full newsletter 'url "http://www.oracle.com/us/dm/sev100494713-na-us-nl-newsl2-ev-2857170.html" "is available on-line."'
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08 Jan 2016
open to premium members only
Enterprise Manager 13c [48942]
What's New in Database Lifecycle Management

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04 Jan 2016
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Managing Solaris 11 via Ansible [48926]
/home/liquidat, January 4th, 2016

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29 Dec 2015
open to premium members only
Oracle Enterprise Manager 13c is Available for you! [48742]
By Okcan Yasin Saygili

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