@misterdorm

Husband. Father. Follower of Jesus Christ. Coloradan.
Iowa native. DevOps Engineer. Hiker & Skier. ISTJ.

Author: Mike Dorman (page 3 of 5)

March RMNP Snowshoeing

Here are a few fun shots from our snowshoeing trip last weekend at Bear Lake in Rocky Mountain National Park.  We also enjoyed some sledding at Hidden Valley.  

Nova max_age and until_refresh Settings for Easing Quotas Pain (Updated)

One of the things that’s come out of the proposed “Refresh quota usages” spec are the little-known nova max_age and until_refresh quota settings.  These options allow you to trigger quota refreshes within Nova at different intervals. This can help with the various quota bugs, where occasionally the quota usages can get out of sync with

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OpenStack Operators Kilo Mid-Cycle Meetup, Day 2

Key Takeaway – We Need Operators’ Feedback! A common thread throughout the entire meetup is operators providing feedback and comments on specs and reviews.  It’s clear this feedback is invaluable to the developer community.  It also provides benefit to the operators community as our feedback helps shape the priorities of the various projects. I think the

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OpenStack Operators Kilo Mid-Cycle Meetup, Day 1 Takeaways

Here are some of my notes and main take-aways from the OpenStack Operators meet up going on today and tomorrow in Philadelphia.  (Obviously there is a lot more data and details in the individual etherpads.) The meeting was originally scheduled to take place at the Comcast Center, but was moved to The Hub at United

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Super Cool Christmas Lights Under the Snow

Check out these sweet pictures I got of my Christmas lights right after it snowed!  (Click for a larger view.)

Converting to OpenStack Nova Cells Without Destroying the World

Note: I did a talk at the OpenStack Liberty Summit in Vancouver based on this post.  The slides are available on Slideshare, as well as a video recording of the session. (See the Exploring OpenStack Nova Cells post for an introduction and background information about Nova cells.) If you already have a Nova instance configured with

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Exploring OpenStack Nova Cells

Cells Overview Nova cells was introduced at the Folsom/Grizzly timeframe as a way to scale Nova beyond the limitations of a single database backend and message queueing system.  This was mainly geared at larger operators who needed to scale beyond hundreds of hypervisors. At a basic level, Nova cells creates a hierarchy of Nova installs, each

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rabbitmq_management Listening on Multiple Ports: It can’t be done!?

Lately I’ve been trying to get the RabbitMQ management plugin to listen on more than one port.  This is in an effort to resolve these comments on the puppetlabs-rabbitmq Puppet module.  I want one listener on localhost only, in non-SSL mode, and a second listener on a different port which serves SSL requests from external

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OpenStack Paris Summit Notes

Random notes I took during the OpenStack Paris Summit.  May or may not be useful for others. Note:  Matt Fischer has a great post on Key Learnings from Paris.  Also featured on the OpenStack Superuser site! Ceph for Openstack (Design Summit) http://kilodesignsummit.sched.org/event/f2e49f4547a757cc3d51f5641b2000cb https://etherpad.openstack.org/p/kilo-ceph Top 10 Pain Points from User Survey http://kilodesignsummit.sched.org/event/e6dc7a0a7c350af1a3954f3427785333 http://superuser.openstack.org/articles/openstack-user-survey-insights-november-2014 https://etherpad.openstack.org/p/kilo-summit-ops-pain Best way

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PuppetConf 2014 Notes

In case someone else might find this useful, here are my notes from PuppetConf 2014 (including the Monday contributor’s summit.) Contributor Summit (Modules Track) https://github.com/puppet-community Puppet modules antipatterns Don’t ensure => latest on packages (installed or present) Do parameter validation (use stdlib) Don’t require an yum/apt repo Ensure idempotency Deprecation warnings strict_variables = true in

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