Scott Harney

The USE method for troubleshooting

Julie Evans (@bork) has been posting fantastic little cartoons describing different UNIX commands. I learn a little something new from every single post along with its comments. She posted this little gem about the top command: top — 🔎Julia Evans🔍 (@b0rk) July 26, 2018 She then followed that up with a link to one of her sources for understanding top and in particular what the "load average" represents on Linux.

Netapp post-transition snapshot cleanup with powershell

I do some work with customers transitioning from 7-mode to modern ONTAP (Clustered Data OnTap). When you transition with the excellent 7mtt tool it helpfully transitions snapshots made on the source system to the new system and optionally will duplicate the snapshot schedule on the old system using the new snapshot policies capability. However, the old snapshots from 7-mode are not automatically rolled off. Removal of those old snapshots is left to the administrator.

Netapp Transition Migration with Powershell helpers

Intro I do work with customers moving legacy NetApp 7-mode systems to current ONTAP. This is termed as transition In NetApp parlance and they provide extensive tools to evaluate, plan and execute a transition. In the ideal situation, their 7mTT tool is used to orchestrate all of the transition work. However, customer systems and customer requirements may not make that entirely possible. Customers may have old 32-bit aggregates and volumes, for example, and they may not want to negotiate an additional maintenance window to upgrade an old 7-mode filer to a new version to be able to update those aggregates to 64 bit.

Some Site Changes

I decided recently to make the switch from jekyll to hugo for my site. I do most of my writing in org mode rather than markdown these days inside of spacemacs . I'd looked into numerous ways of easing the workflow for generating new posts. Since I'm already taking notes in org mode, converting those notes into a post should be simple. But generating the site in jekyll was less so.

New Year, New Job!

With the start of the new year comes a fresh start for me as a Consulting Systems Engineer in the Data Center Infrastructure practice at RoundTower Technologies . My areas of focus including Data Storage and Data Protection. I'll provide pre-sales consulting and assessments not just in Louisiana but potentially throughout RoundTower territory. It's a big step up for me and I'm excited about the opportunity. RoundTower is keenly focused on two things: Technical excellence: We want to bring the highest level of technical knowledge and capability to our customers.

Automating Nutanix Prism VMs

Intro My goal is to explore the Nutanix APIs provided by Prism and Acropolis Hypervisor and automate deployment of AHV virtual machines. I am looking at implementing CoreOS "container linux" VMs with an eye towards hosting applications on a Kubernetes (k8s) cluster for testing and learning purposes. This is similar to working with public cloud (eg. ec2) but in a "private cloud" environment. Nutanix provides RESTful APIs to work with as does coreos and all of its component pieces.

NetApp Insight 2016 Impressions

I did an internal write up about attendance at my 3rd NetApp Insight in a row. ASG decided to publish a variation for public consumption on our corporate blog I was going to write something up on my own site but they saved me the trouble ;) Quick take, I was pleasantly surprised that there was so much new and different to see this year. Aggressive external competition and an infusion of SolidFire staff are pushing the company forward.

Using Ansible to Bootstrap My Work Environment Part 5

What is the point of all of this effort? After all this is a very specific, personal work environment. This seems like an inordinate amount of time spent tweaking specific little items and where is the value in that? Is there a wider applicability to this effort? Learning In order to learn something new, such as an automation framework, you need to have some itch to scratch, a genuine purpose.

Using Ansible to Bootstrap My Work Environment Part 4

Overview Using an AWS EC2 instance as a utility host presents additional interesting wrinkles. With EC2, one can spin up and tear down instances quickly and dynamically. Because charging on AWS is usage based, I can either provision or start a previously provisioned instance as needed. When I decide to add new parts to my work environment I can use Ansible to quickly provision and test a replacement instance environment while my previous known-good configuration is still available to start and use.

Using Ansible to Bootstrap My Work Environment Part 3

In my previous post I dove into crouton specific role items. These were just little bits unique to a Chromebook chroot environment. The bulk of items I can automate with ansible are common to any linux install I might do. I’m focused on Ubuntu for desktop work but given the way ansible works, I can customize this to use with any distribution perhaps segregating an OS-distribution specific role down the road.