AIXpert Blog is about the AIX operating system from IBM running on POWER based machines called Power Systems and software related to it like IBM Systems Director, PowerVM for virtualisation and PowerSC for security plus performance monitoring and nmon
HACMP recently announced support for the following: HACMP 5.4.1 for Linux HACMP Support Announcement for the JS22 HACMP supports the IBM 4-Port Ethernet 10/100/1000 Base-TX PCI-X Adapter HACMP announces support for P6 p520 and p550 HACMP supports IBM VIO Server V1.5 Click on the above linked text for full support details.
PowerHA recently announced support for the following: PowerHA announces support for DS3400 PowerHA announces support SAS Adapters PowerHA announces support 5735 PCI-e Dual Fibre Adapter Click on the above linked text for full support details.
Unlike its predecessors, the 7042 Hardware Management Console for a POWER6 server does not have to be within 25 feet of the managed system. However, there may be practical reasons why it will continue to be close to the machines it manages. The purpose behind the distance limitation was to facilitate work by an IBM Service Support Representative. One of the HMC's functions is to serve as a repository of service information and tools. Some service utilities, such as the ability to blink lights on and off to identify adapters, would be... [More]
The following paper by Ralf Schmidt-Dannert discusses the performance impact of AIX micropartition options on a 2 tier Java/C++/Oracle application. His benchmarks show micropartitioningcan have a positive impact on application performance. His conclusionsinclude: 1. The micropartition CPU sharing improved performance over static LPARs2. SMT improved performance (default AIX setting)3. Don't over configure Virtual Processors (My recommendation is to configure at most one Virtual Processor per CPU in the free pool)... [More]
Support for the new Power5+ Servers: http://w3-03.ibm.com/support/techdocs/atsmastr.nsf/WebIndex/FLASH10519 HACMP supports the IBM System Storage DS4200 Express http://w3-03.ibm.com/support/techdocs/atsmastr.nsf/WebIndex/FLASH10514 HACMP supports SVC 3.1 & Metro Mirror Express http://w3-03.ibm.com/support/techdocs/atsmastr.nsf/WebIndex/FLASH10513 HACMP supports the JS21 BladeCenter Express http://w3-03.ibm.com/support/techdocs/atsmastr.nsf/WebIndex/FLASH10512 HACMP supports the IBM System Storage DS4700... [More]
If you are using AIX sendmail, you should consider the following fix to prevent spammers from using it as an open mail relay. ftp://aix.software.ibm.com/aix/efixes/security/sendmail_3_mod.tar.Z /a> The exposure applies to AIX 5.3 ML1 and earlier distributions. The exposure was resolved in AIX 5.3 ML2. For more information, see http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0285
AIX5L Practical Performance Tools and Tuning GuideRevised: November 2, 2006 ISBN: 0738491799 738 pagesExplore the book online at http://www.redbooks.ibm.com/abstracts/sg246478.html Certification Study Guide: System p5 Admin & Support for AIX v5.3Revised: October 31, 2006 ISBN: 0738496499 720 pagesExplore the book online at http://www.redbooks.ibm.com/abstracts/sg247199.html
The latest Versioned Workload Partition (VWPAR) Version 1.1.2 is available but largely secret!
With this update I get on my AIX 7 virtual machine, in which I have installed both AIX5.2 and AIX 5.3 support:
# lslpp -L | grep -i vwpar
vwpar.52.rte 18.104.22.168 C F AIX 5.2 Versioned WPAR Runtime
vwpar.images.52 22.214.171.124 C F Versioned WPAR 5.2 Support
vwpar.images.53 126.96.36.199 C F Versioned WPAR 5.3 Support
vwpar.images.base 188.8.131.52 C F ... [More]
I want to remind you of the value of pSeries Subscription Services. Recently, those of us subscribed to receive 'Critical Fixes' got a note pointing to this URL: http://techsupport.services.ibm.com/server/criticalfixes3/critfixes/5300-02.html This listed 36 Critical Fixes of which two were Critical Security Fixes: IY68463 AIX 5.3 SECURITY: Local root exploits in perl 5.8.x IY70026 AIX 5.3 Attacks against TCP via ICMP Other critical security fixes recently announced through subscription service IY68825 AIX 5.3 Remote... [More]
Late last week Systems Director 6.2 was released - a few days early too! This is the free to download and use IBM platform management software from IBM. For us AIX guys that means Power Systems Hardware, HMC, IVM, VIOS and AIX - and Linux on POWER too This new release is was focused mainly performance, simpler install (or migration from 6.1) and rolling in many fixes that could not be addresses with service packs. There are also some new features like dual VIOS SAN support for VMControl virtual application deployment. AIX is obviously the... [More]
AIX O/S Updated to Support New Daylight Savings Time Change The Energy Policy Act of 2005 (Public Law 109-58) was passed by the United States Congress on July 29, 2005 and signed into law on August 8, 2005. This law changes the time-change dates for Daylight Saving Time in the United States. Beginning in 2007, DST will begin on the second Sunday of March and end on the first Sunday of November. IBM has released updates to AIX 5L operating systems to support this change. The updates should be applied prior to March 11, 2007. AIX 5L Version 5.3... [More]
One customer was experiencing slow performance for the gcc build script and the Apache configure script. The problem was resolved by exporting the following variables. export CONFIG_SHELL=/opt/freeware/bin/bash export CONFIG_ENV_ARGS=/opt/freeware/bin/bash The performance for the Apache configure script went from 2 1/2 hours to 3 minutes. The performance for the gcc and gcc++ build went from 4-5 hours to 35 minutes. The performance for the full blown gcc build using NFS went... [More]
IBM SECURITY ADVISORYFirst Issued: Wed Apr 4 09:05:40 CDT 2007 ========================================================================== VULNERABILITY SUMMARY VULNERABILITY: Remotely exploitable denial of service vulnerabilities in OpenSSH. PLATFORMS: OpenSSH 4.3p2 for AIX 5.2, 5.3 SOLUTION: Apply the APAR, interim fix or workaround as described below. THREAT: A remote attacker may cause a denial of service. CERT VU Number: n/aCVE Number: ... [More]
I regularly get asked to run a demonstration for IBM Systems Director but that is a time consuming business for both me and the audience. Especially, when you can find out every thing that I know from the comfort of you own office or even home office plus Stop, Replay and Pause via YouTube videos. So here is a reminder and hopefully a page I can point to when I next gets asked.
ISD63 Workshop 1 Techie Intro... [More]
If you plan to use an existing HMC with a new Power5 server, be sure the HMC version is 4.5. This is required for the current Power5 microcode (SF230_145, August 2005). The new microcode/HMC versions support concurrent maintenance, or the ability to do most microcode upgrades dynamically, without having to take down partitions. You can download the HMC update from http://www-912.ibm.com/eserver/support/fixes/