March 1 Blogpost Roundup

It’s been a busy few weeks of blogging! Thanks as always to those of you who continue to write great content.

OpenStack Role Assignment Inheritance for CloudForms by Adam Young

Operators expect to use CloudForms to perform administrative tasks. For this reason, the documentation for OpenStack states that the Keystone user must have an ‘admin’ role. We found at least one case, however, where this was not sufficient. Fortunately, we have a better approach, and one that can lead to success in a wider array of deployments.

Read more at http://adam.younglogic.com/2018/02/openstack-hmt-cloudforms/

Listening for connections on all ports/any port by Lars Kellogg-Stedman

On IRC — and other online communities — it is common to use a “pastebin” service to share snippets of code, logs, and other material, rather than pasting them directly into a conversation. These services will typically return a URL that you can share with others so that they can see the content in their browser.

Read more at http://blog.oddbit.com/2018/02/27/listening-for-connections-on-a/

Grouping aggregation queries in Gnocchi 4.0.x by Lars Kellogg-Stedman

In this article, we’re going to ask Gnocchi (the OpenStack telemetry storage service) how much memory was used, on average, over the course of each day by each project in an OpenStack environment.

Read more at http://blog.oddbit.com/2018/02/26/grouping-aggregation-queries-i/

TripleO deep dive session #12 (config-download) by Carlos Camacho

This is the 12th release of the TripleO “Deep Dive” sessions. In this session we will have an update for the TripleO ansible integration called config-download. It’s about applying all the software configuration with Ansible instead of doing it with the Heat agents.

Read more at https://www.anstack.com/blog/2018/02/23/tripleo-deep-dive-session-12.html

Maximizing resource utilization with Preemptible Instances by Theodoros Tsioutsias

The CERN cloud consists of around 8,500 hypervisors providing over 36,000 virtual machines. These provide the compute resources for both the laboratory’s physics program but also for the organisation’s administrative operations such as paying bills and reserving rooms at the hostel.

Read more at http://openstack-in-production.blogspot.com/2018/02/maximizing-resource-utilization-with.html

Testing TripleO on own OpenStack deployment by mrunge

For some use cases, it’s quite useful to test TripleO deployments on a OpenStack powered cloud, rather than using a baremetal system. The following article will show you how to do it.

Read more at http://www.matthias-runge.de/2018/02/16/tripleo-ovb/

A New Thing by Andrew Beekhof

If you’re interested in Kubernetes and/or managing replicated applications, such as Galera, then you might also be interested in an operator that allows this class of applications to be managed natively by Kubernetes.

Read more at http://blog.clusterlabs.org/blog/2018/replication-operator

Two Nodes – The Devil is in the Details by Andrew Beekhof

tl;dr – Many people love 2-node clusters because they seem conceptually simpler and 33% cheaper, but while it’s possible to construct good ones, most will have subtle failure modes.

Read more at http://blog.clusterlabs.org/blog/2018/two-node-problems

Article written by

Mary Thengvall is a connector of people at heart, both personally and professionally. She loves digging into the strategy of how to build and foster communities, and has been working with various developer communities for over 10 years. After several years of building community programs at O’Reilly Media, Chef Software, and SparkPost, she’s now consulting and contracting with companies looking to build out a Developer Relations strategy.