Jeff Geerling

Career

Geerling has been owner and president of Midwestern Mac, LLC since 2009. Earlier roles listed on Geerling's site include chief technical officer of Flocknote (2011–2013), senior application developer at Mercy (2013–2014), senior technical architect at Acquia (2014–2019) and technical consultant at Ansible by Red Hat (2019–2021).¹³

Books and open-source work

Geerling has used Ansible to manage infrastructure since early 2013 and wrote Ansible for DevOps, now in its second edition, which teaches server provisioning and configuration management from inventory files and ad-hoc commands through playbooks, deployments and Docker orchestration. The book's manuscript and example code are open source, with the text under a CC BY-SA license, and it is updated several times a year.³²

Ansible for Kubernetes follows the use of Ansible to build Kubernetes clusters and deploy and maintain applications on them; Geerling has worked with Kubernetes since 2017. Geerling also wrote Kubernetes 101 and is involved in the Linux, Ansible, Raspberry Pi and Drupal communities.⁴²¹

Channel and publications

Geerling publishes videos on the Jeff Geerling YouTube channel and long-form posts on jeffgeerling.com. Recent 2026 blog posts cover single-board computers such as the Raspberry Pi 5 and Radxa Q8B, homelab networking, time servers and NTP, and a PHP security vulnerability.⁵⁶

Work and contributions

• Jeff Geerling YouTube channel Show, channel or publication

  Videos from a developer and maker, alongside a blog at jeffgeerling.com covering Linux, Raspberry Pi, Ansible, and related open-source projects.¹⁵

• Ansible for DevOps Show, channel or publication

  Author of the book Ansible for DevOps, listed with Ansible for Kubernetes and Kubernetes 101 on the author's books page.²

Timeline

1. 2009Became owner and president of Midwestern Mac, LLC.¹
2. 2011Became chief technical officer of Flocknote LLC, serving until 2013.¹
3. 2013Began using Ansible to manage infrastructure.³
4. 2014Joined Acquia as a senior technical architect, serving until 2019.¹
5. 2017Began working with Kubernetes, the subject of the book Ansible for Kubernetes.⁴
6. 2019Joined Ansible by Red Hat as a technical consultant, serving until 2021.¹
7. Sep 25, 2026Announced HomelabFest, a homelab event planned for September 2027.⁶

Other documented roles

Roles the sources document that are not confirmed as current.

• Technical Consultant, Ansible by Red Hat¹
• Senior Technical Architect (2014–2019), Acquia¹
• Chief Technical Officer (2011–2013), Flocknote LLC¹

Where they work

• Midwestern Mac, LLC 1 person in the wiki

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