infrastructure and DevOps

Lena's Digest

Hi, I'm Lena. Essays and field notes on infrastructure and DevOps. I write about secrets management, infrastructure as code, blue-green deploys and whatever else I'm learning this month.

Latest writing

  • · 3 min read

    Secrets Management for Small Teams

    Every codebase has one area everyone is a little afraid to touch. On our team, it was everything related to secrets management.

    #ci#on-call#terraform
  • · 3 min read

    Blue-Green Deploys on a Budget

    For a long time I treated blue-green deploys as something to worry about later. Then a small change to our Ansible setup turned into a week of debugging, and "later" arrived all at once.

    #on-call#sre
  • · 3 min read

    Kubernetes Is Not a Strategy

    A colleague asked me last week why our team cares so much about container image size. I gave a rambling answer, so here is the longer, more organized version.

    #monitoring#cloud#on-call
  • · 3 min read

    A Gentle Runbook for Your First On-Call Week

    A colleague asked me last week why our team cares so much about alert fatigue. I gave a rambling answer, so here is the longer, more organized version.

    #kubernetes#cloud#monitoring
  • · 3 min read

    Alerts Should Wake You Up for a Reason

    I've been working with Kubernetes for about 8 years now, and my opinions on secrets management have changed more than I expected.

    #sre#kubernetes#cloud
  • · 3 min read

    Shrinking Docker Images Without Losing Your Mind

    Every codebase has one area everyone is a little afraid to touch. On our team, it was everything related to autoscaling.

    #sre#terraform
  • · 3 min read

    Our CI Went From 22 Minutes to 6. Here's the Boring Part.

    There is no shortage of articles about Kubernetes. Most of them cover the happy path. This one is about what happened after the happy path ended.

    #terraform#docker#monitoring
  • · 3 min read

    Terraform Modules I Regret Writing

    For a long time I treated CI caching as something to worry about later. Then a small change to our Terraform setup turned into a week of debugging, and "later" arrived all at once.

    #terraform#on-call#docker
  • · 3 min read

    The Dashboard Nobody Looked At

    There is no shortage of articles about Terraform. Most of them cover the happy path. This one is about what happened after the happy path ended.

    #sre#cloud#docker