31st Week of 2021

DevOps⚑

Infrastructure as Code⚑

Terraform⚑

• New: Introduce terraform and how to handle RDS secrets.

  Terraform is an open-source infrastructure as code software tool created by HashiCorp. It enables users to define and provision a datacenter infrastructure using an awful high-level configuration language known as Hashicorp Configuration Language (HCL), or optionally JSON. Terraform supports a number of cloud infrastructure providers such as Amazon Web Services, IBM Cloud , Google Cloud Platform, DigitalOcean, Linode, Microsoft Azure, Oracle Cloud Infrastructure, OVH, or VMware vSphere as well as OpenNebula and OpenStack.

Infrastructure Solutions⚑

Kubernetes⚑

• New: Add Velero as interesting tool.

  Velero is a tool to backup and migrate Kubernetes resources and persistent volumes.

Architecture⚑

• New: Give suggestions on how to choose the number of kubernetes clusters to use.

  You can run a given set of workloads either on few large clusters (with many workloads in each cluster) or on many clusters (with few workloads in each cluster).

  Here's a table that summarizes the pros and cons of various approaches:

  Figure: Possibilities of number of clusters from learnk8s.io article

Operative Systems⚑

Linux⚑

Linux Snippets⚑

• New: Explain how to allocate space for a virtual filesystem.

  fallocate -l 20G /path/to/file
  

Arts⚑

Writing⚑

Grammar and Orthography⚑

• New: Explain the use of z or s in some words.

  It looks like American english uses z while British uses s, some examples:

  • Organizations vs organisation.
  • Authorization vs authorisation.
  • Customized vs customised.

  Both forms are correct, so choose the one that suits your liking.