A slightly quiet issue this week as I’ve been on holiday. But still lots of great content on everything from packaging to highly-available database clusters to understanding a bit more about layered file system use in containers.

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News

PowerShell has been open sourced, and is also now available for Linux and OS X. I think this is a big deal, and we’ll hear more about why hopefully in future issues (hint hint).
https://azure.microsoft.com/en-us/blog/powershell-is-open-sourced-and-is-available-on-linux/

Packaging is always a hot topic. This post makes a convincing argument that the state of python packaging has improved measurably over the last few years.
https://glyph.twistedmatrix.com/2016/08/python-packaging.html

A great post on building highly available database clusters, in this case a pool of MySQL replicas supported by HAProxy. Lots of code samples and demos.
http://githubengineering.com/context-aware-mysql-pools-via-haproxy/

Puppet 4 has been available for a while now with some useful new features like a type system and improvements to error messages, performance and more. A good list of gotchas for anyone upgrading.
http://hggh.github.io/puppet/debian/2016/08/19/puppet-4.x.html

Consul and more generally service discovery is a key part of many modern architectures. This post covers some of the things learned from running Consul for a while, including managing load, monitoring and auditability.
https://engineering.datadoghq.com/consul-at-datadog/index.html

A good introduction to using recent features in Jenkins to build a modern pull-request centric test pipeline using the new Jenkinsfile.
https://www.theguild.nl/building-github-pull-requests-using-jenkins-pipelines/

A good look at how updates from package repositories can lead to larger Docker containers, why this isn’t desirable and what you can do about it.
http://developers.redhat.com/blog/2016/03/09/more-about-docker-images-size/

Autoscaling is a key part of taking advantage of moving to a cloud environment. This post delves into why and covers some typical autoscaling strategies.
https://blog.codeship.com/autoscaling-purpose-strategies/

A discussion of the importance of automation and standards as teams scale out with more and more services. How do you avoid the microservices version of works on my machine?
https://www.linux.com/news/how-twitter-avoids-microservice-version-works-my-machine

Jobs

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http://hrd.cm/23r2ok5

Events

Software Circus is coming up in a few weeks in Amsterdam, on the 31st of August to the 2nd of September. Talks abound on containers, cloud native architectures, AI, modern infrastructure and more.
http://cloudnativecomputing.softwarecircus.io/

Manage and automate DevOps operations through group chat. Learn how in the free ChatOps book from VictorOps:
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