Chef Client and Other Nuggets from Twitter

Edit: Some links no longer work. Originally posted December 23, 2014 on AIXchange Recently on his Twitter feed, IBMer Jay Kruemcke noted that Chef Client is now available on AIX. I’ll write about this in detail in the near future, but for now, here’s the word from Chef’s website: “Today I’m very pleased to announce the availability of … Continue reading “Chef Client and Other Nuggets from Twitter”

Is This the End for Desktops and Laptops?

Edit: I am still running my laptop and desktop. Originally posted December 16, 2014 on AIXchange Lately I’ve read several commentators predict that desktops and laptops will soon be completely replaced by tablets and phones. I sure hope they’re wrong. Although there’s much to be said for the portability of a phone or a tablet, … Continue reading “Is This the End for Desktops and Laptops?”

Dummy Devices

Edit: Do you still manage disks manually? Originally posted December 2, 2014 on AIXchange A customer was looking to assign SAN LUNs to a pair of VIO servers using vSCSI. When the VIO servers were configured, VIO1 was assigned adapters containing odd numbers of internal disks:             VIO1             lsdev -Cc disk             hdisk0 Available 04-00-00 SAS RAID … Continue reading “Dummy Devices”

The Value of Hardware Maintenance

Edit: Keep your maintenance current. Originally posted November 25, 2014 on AIXchange Recently, a customer was looking for help with their machine, a 7038-6M2 running AIX 5.1. The customer attempted to call IBM for assistance. They didn’t get very far at first. This machine was announced in 2002 and withdrawn from marketing in 2005. In addition, IBM … Continue reading “The Value of Hardware Maintenance”

Firefox SSL Fix for HMC Users

Edit: Link no longer works. Originally posted November 7, 2014 on AIXchange I have pretty good luck when using Mozilla with my HMCs. However, when I recently upgraded Mozilla, I encountered an issue: An error occurred during a connection to hmc1. Issuer certificate is invalid. (Error code: sec_error_ca_cert_invalid)     The page you are trying to view … Continue reading “Firefox SSL Fix for HMC Users”

A Useful Data-Compression Option

Edit: Have you run this tool? Originally posted November 3, 2014 on AIXchange Perhaps you’re interested in compressing data on your IBM storage devices. But do you have any idea how much of your data is actually compressible? The Comprestimator utility is designed to tell you how much actual compression you’ll achieve without actually compressing … Continue reading “A Useful Data-Compression Option”

A System Outage, and the Failures that Led to It

Edit: Some links no longer work. Originally posted October 21, 2014 on AIXchange Old Power servers just run. Most of us know of machines that sat in a corner and did their thing for many years. However, as impressive as Power hardware is, running an old, unsupported production server with an old, unsupported operating system isn’t advisable. … Continue reading “A System Outage, and the Failures that Led to It”

POWER8 E870 and E880 Offer Impressive Performance

Edit: Link no longer works. This announcement feels like it happened yesterday. Originally posted October 3, 2014 on AIXchange New POWER8 server models were announced today: the scale-up E870 (9119-MME) and E880 (9119-MHE) along with an Ubuntu Linux only model called the S824L. The E (with the “E” denoting “enterprise”) models will have I/O drawers … Continue reading “POWER8 E870 and E880 Offer Impressive Performance”

Power Systems, Linux on Power Events Scheduled

Edit: I love this type of training. Originally posted September 30, 2014 on AIXchange I recently attended a no-charge Linux on Power workshop that’s currently touring the U.S. In conjunction with this 1-day workshop, a 2-day Power Systems virtualization class is traveling the country as well. Both events are geared toward IBM customers, so see … Continue reading “Power Systems, Linux on Power Events Scheduled”

Locating a Problematic Filesystem

Edit: Some links no longer work. Originally posted September 9, 2014 on AIXchange It was an ordinary day. I needed to take a mksysb. Only this time, I was getting an error.             /usr/bin/mkszfile[1266]: FS_MIN_LOG = FS_MIN_LOG *             20480 : 0403-009 The specified number is not valid for this command.             0512-008 mksysb: The … Continue reading “Locating a Problematic Filesystem”

vSCSI vs. NPIV

Edit: Most people seem to do everything with NPIV these days. Originally posted September 2, 2014 on AIXchange The IBM Redbook, “PowerVM Best Practices,” has a detailed look at mixing vSCSI and NPIV on VIO client LPARs. From Section 5.1.3: “It is possible to mix a virtual Small Computer System Interface (SCSI) and N-Port ID Virtualization (NPIV) … Continue reading “vSCSI vs. NPIV”

Useful Storage Links

Edit: Some links no longer work. Originally posted August 26, 2014 on AIXchange Here’s an assortment of really good storage-related articles — the majority of which are found on IBM developerWorks — that are worth your time. While some of them are a few years old, they still provide relevant information. * “Guide to selecting a … Continue reading “Useful Storage Links”

On Going Dark

Edit: Some links no longer work. I do not unplug nearly as often as I should. Originally posted August 5, 2014 on AIXchange I have another quick story involving my work with Boy Scouts. Each summer we try to get the older boys involved in some high adventure activities. Last year this included target shooting (shotguns … Continue reading “On Going Dark”

More POWER8 Docs

Edit: Some links no longer work. Originally posted June 24, 2014 on AIXchange I love reading about new computing technologies, particularly the latest IBM Power Systems releases. It doesn’t hurt that, as a consultant, I have opportunities to work with the newest hardware, but even if that wasn’t the case, I’d still want to know … Continue reading “More POWER8 Docs”

Random NIM Notes

Edit: Still good stuff. Originally posted May 27, 2014 on AIXchange Recently, a customer wanted to remove a client from its original NIM master server and add it to a new, just-installed NIM master server. The comments made to this post reminded me of the niminit command: A quick recap on how to register and initialize … Continue reading “Random NIM Notes”

Using the HMC with IBM Flex System Nodes

Edit: Cannot remember the last time I thought about Flex System. Originally posted May 6, 2014 on AIXchange The short-lived SDMC wasn’t widely adopted, in part because customers who were familiar with the HMC didn’t want to relearn the SDMC interface. While the IBM Flex Systems Manager (FSM) isn’t going anywhere, it does pose a similar … Continue reading “Using the HMC with IBM Flex System Nodes”

More POWER8 Announcement Details

Edit: Some links no longer work. Originally posted April 29, 2014 on AIXchange By now you’re probably aware of IBM’s announcement of POWER8 and new hardware models. Last week I examined the speeds and feeds. Here’s a look at some of the other coverage: IBM announcement press release IBM Systems Magazine online article by Evelyn Hoover POWER8 webcast … Continue reading “More POWER8 Announcement Details”

A tmux Primer

Edit: It has been longer than 10 years now. Some links no longer work. Originally posted April 1, 2014 on AIXchange I wrote this piece about screen and vnc for IBM Systems Magazine 10 years ago, and I still refer to it, because I still use screen and vnc. However, I must admit that tmux is giving screen a … Continue reading “A tmux Primer”

Installing Language Filesets

Edit: Future me is still glad these archives are here. Originally posted March 18, 2014 on AIXchange If you’ve ever installed locale files on your AIX server, you might appreciate my recent predicament. A customer’s application team recently asked me to install bos.loc.utf.EN_US as part of their overall installation. The file exists on the installation … Continue reading “Installing Language Filesets”

Upgrading the HMC

Edit: Links still work at the time of this writing. Originally posted March 11, 2014 on AIXchange Awhile back Chris Gibson (@cgibbo) retweeted this document on upgrading to the newest HMC model. So why would you upgrade when your current HMC is working fine? For the same reasons you upgrade anything else — for starters, faster CPU and … Continue reading “Upgrading the HMC”

The Key Question of Why, and Why the Answer Matters

Edit: Still good questions to ask ourselves. Last link no longer works. Originally posted March 4, 2014 on AIXchange A while back Nigel Griffiths (@mr_nmon) tweetedabout a TED talk on leadership. It was 18 minutes well-spent. Simon Sinek, the speaker, gave this presentation in 2009, and it was posted to TED.com in 2010. He starts by drawing three … Continue reading “The Key Question of Why, and Why the Answer Matters”

Popular Presentation Located, Updated

Edit: Link no longer works. Originally posted February 25, 2014 on AIXchange I often get questions from readers. The most common question I’ve received recently is, “Where did the slides go?” In April 2013 I noted that Fredrik Lundholm had been compiling the Power Implementation Quality Standard for commercial workloads, and posted a link to what was … Continue reading “Popular Presentation Located, Updated”

PowerHA and Multicast Setup

Edit: Link works at the time of this writing. Originally posted February 18, 2014 on AIXchange Recently during a PowerHA 7.1.2 installation, the network team was unable to get multicast communication working properly. Fortunately we were able to use this document to get everything going. From the document, entitled “PowerHA System Mirror 7.1 and Multicasting Setup”:             … Continue reading “PowerHA and Multicast Setup”

Document Examines IBM i External Storage Options

Edit: In this piece I address a future reader, who would now be a past reader. Originally posted February 11, 2014 on AIXchange As I’ve previously noted, while this blog is focused on AIX, I think it’s worthwhile to occasionally discuss the IBM i operating system. Increasingly, AIX pros are asked to support their IBM i counterparts … Continue reading “Document Examines IBM i External Storage Options”

IBM Rolling Out Entitlement Validations

Edit: Some links no longer work. Originally posted January 21, 2014 on AIXchange Last fall I wrote about IBM changing its approach to delivering software products and updates: “Another portal feature is an entitlement check that allows customers to download fixes. Just enter your machine type and serial number. The various entitlement types are tied to the … Continue reading “IBM Rolling Out Entitlement Validations”

Using rendev

Edit: This looks like the last post from 2013 based on the note below. Some links no longer work. Originally posted December 17, 2013 on AIXchange **Please note: This blog will be updated on January 7, 2014.** Two weeks ago I reposted a tip from Russell Adams on displaying disk UUID. Here’s another tip that … Continue reading “Using rendev”

Displaying Disk UUID

Edit: Some links no longer work. Originally posted December 3, 2013 on AIXchange If you’re on a mailing list for IBMers and business partners, you saw this information from Russell Adams earlier this fall. For the benefit of those who aren’t on that list, and with Russell’s permission, I’m reposting it here. (Note there are … Continue reading “Displaying Disk UUID”

Striking a Balance Between the Command Line and GUIs

Edit: Some links no longer work. Still a good discussion. Originally posted November 12, 2013 on AIXchange There’s been some recent discussion and debate about the benefits of using the command line (or green screen, in IBM i parlance) as opposed to GUIs. Despite the wishes of some, the green screen is still with us. Despite the perceptions of others, … Continue reading “Striking a Balance Between the Command Line and GUIs”

Three Scripts

Edit: Some links no longer work. Originally posted October 15, 2013 on AIXchange I’ve seen a few good scripts lately. Brian Smith mentions a couple of them in his blog. This one will show you if your HBA/hdisk settings are actually in effect.             “There are several storage related settings in AIX that cannot be changed if … Continue reading “Three Scripts”

PowerVP, PowerVC Highlight Today’s IBM Announcements

Edit: Some links no longer work. Originally posted October 8, 2013 on AIXchange Today’s announcements have quite a bit of interesting information, but two new products that I’m especially excited about are PowerVP and PowerVC. PowerVP uses a graphical Java client to monitor virtual workloads, which of course can be much more complex than the workloads … Continue reading “PowerVP, PowerVC Highlight Today’s IBM Announcements”

Logging a Client Virtual Fibre Channel Adapter into a SAN

Edit: Some links no longer work. Originally posted October 1, 2013 on AIXchange Recently a customer was presenting some LUNs to some NPIV clients on a server. There were many LUNs and many clients, and the SAN guys wanted all of them to appear on the switch so they could begin zoning them. I remembered … Continue reading “Logging a Client Virtual Fibre Channel Adapter into a SAN”

Restricting FTP Access

Edit: Some links no longer work. Originally posted September 24, 2013 on AIXchange A customer was trying to restrict user access to a particular directory on an AIX system when FTP was used. We came across two good options.First, I recalled this exchange on Twitter:             sungokcho: RT @ibmaix: #AIX #tip to restrict ftp user to … Continue reading “Restricting FTP Access”

AIX, NIM Make System Restoration Easier

Edit: Some links no longer work. Originally posted September 3, 2013 on AIXchange Recently I received this query:             “I wonder if you have a basic tutorial describing the steps needed to restore an AIX server. I am thinking of a scenario similar to the following:             “You have an AIX server with some applications and/or databases … Continue reading “AIX, NIM Make System Restoration Easier”

The OpenPOWER Consortium can take Power in New Directions

Edit: Some links no longer work. Originally posted August 13, 2013 on AIXchange When I think of OpenPOWER, I think of the Linux-capable IBM systems unveiled almost 10 years ago. Now though, the name signifies something new after this week’s IBM announcement: “IBM, Mellanox, NVIDIA and Tyan… announced plans to form the OpenPOWER Consortium – an open development alliance based … Continue reading “The OpenPOWER Consortium can take Power in New Directions”

More on the IBM PowerLinux Announcement

Edit: Some links no longer work. Originally posted August 6, 2013 on AIXchange As noted at the end of last week’s post, on July 30 IBM made another PowerLinux announcement. Here’s the full IBM press release. “The PowerLinux 7R4 is the high-end addition to IBM’s line-up of Power Systems PowerLinux servers running industry standard Linux from Red … Continue reading “More on the IBM PowerLinux Announcement”

Virtualization on Power Resources

Edit: Some links no longer work. Originally posted July 23, 2013 on AIXchange Lately I’ve been getting questions about virtual processors and shared processor pools. Here are some resources on this topic that might help. * In January Rosa Davidson of IBM delivered a great two-part presentation, “Capacity Entitlement and Virtual Processors.” The replays and … Continue reading “Virtualization on Power Resources”

UNIX Has 2 Vowels… and That’s About It

Edit: Some links no longer work. Originally posted July 16, 2013 on AIXchange While reading up on some of the activities surrounding the 25th anniversary of IBM i, I came across this tweet: “Celebrating 25 years of vowel conservation” Aaron’s point is that IBM i administrators — going all the way back to the AS/400 days — use … Continue reading “UNIX Has 2 Vowels… and That’s About It”