DEVOPS WEEKLY ISSUE #250 - 18th October 2015

3 minute read

Integrity is probably the theme in hindsight this week. If you haven’t already do read the first post about weak default cryptography and what you can do about it. This nicely leads onto the results from the recent ethics in operations survey.

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News

The observations about weak Diffie-Hellman cryptography this weak point to real-world issues with everything from HTTPS to SSH. This post covers the details of how to configure a number of different common tools correctly.
https://weakdh.org/sysadmin.html

I included an interesting survey on ethics and systems administration a while back and the results, and a presentation on the subject, have been released. Worth reading through.
https://www.netmeister.org/blog/velocity-ny2015-survey-results.html
http://www.slideshare.net/jschauma/primum-non-nocere-ethical-obligations-in-internet-operations

Applying mathematical and statistical methods to monitoring tools has been gaining traction, this post delves into a specific case in some details.
https://www.vividcortex.com/blog/2015/07/10/probabilistic-sampling-sketch/

Continuous delivery pipelines are increasingly common for web application environments, but the tools required for other environments are less-well known. This slide deck covers a real-world pipeline for a module app.
http://www.slideshare.net/jedi4ever/mobile-delivery-with-a-devops-mindset-velocityconf-nyc-2015

A good post covering both devops in a legacy environment, and the realisation that everything progresses to legacy over time if it’s successful. Some good discussion of planning for different lifecycles upfront.
http://rewrite.ca.com/us/articles/management-cloud/legacy-systems-the-hard-problem-of-devops.html

Solid presentation from PuppetConf on using Puppet to both build and manage aspects of a Mesos/Chronos cluster.
https://speakerdeck.com/rji/managing-mesos-docker-and-chronos-with-puppet-puppetconf-2015

An interesting usecase for a reusable docker container. This post covers creating a container that will generate lots of IO, great for benchmarking or testing the behaviour of a noisy neighbour.
http://virtualelephant.com/2015/10/09/docker-container-for-io-benchmarking/

Demonstrating that data hasn’t been tampered with is an interesting usecase which a traditional data structure might not provide. Merkle trees are interesting here and the following post does a good example of explaining them with a series of diagrams.
https://gdstechnology.blog.gov.uk/2015/10/13/guaranteeing-the-integrity-of-a-register/

A nice run through of modern infrastructure tool groupings, including configuration management, container, development environments, schedulers, container operating systems and more.
https://speakerdeck.com/c4milo/devops-tooling-for-the-impatient-engineer

Most of the posts around devops focus on software defined infrastructure, but hardware still has many places. This post covers setting up a powerful home-testing personal cloud from various custom components.
http://www.karan.org/blog/2015/10/15/portable-cloud/

Jobs

FutureLearn are hiring for a Lead Operations Engineer in London to help them architect and build scalable infrastructure in AWS. Experience with automation and continuous delivery environments a plus.
http://team-prime.com/jobs/futurelearn-lead-operations-engineer

Is Chef more to you than a character on South Park? Find new DevOps opportunities on Hired.
http://hrd.cm/1Ln3YwY

Events

Devops Days Silicon Valley is coming up on the 6th and 7th of November with a good looking set of tests on security, working as a lone operations person and dealing with outages. Devops Weekly readers can get a 20% discount with the code DVWKL.
http://www.devopsdays.org/events/2015-siliconvalley/

Tools

An alternative user interface for Mesos. It provides a nice overview of cluster resources, insight into individual frameworks running and access to the master logs all from a web browser.
http://capgemini.github.io/devops/mesos-ui/
https://github.com/Capgemini/mesos-ui

Devops Weekly is sponsored by Brightbox Cloud: the multi-zone cloud platform built for High Availability.

Try an SSD cloud server in 30 seconds with your £20 free credit…
http://brightbox.com/devopsweekly

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