2025-08-12
Designing canary metrics that survive skeptical reviewers
Release managers rarely dispute graphs—they dispute the story. Here is how we tie Argo Rollouts queries to customer-visible symptoms.
Tags: Release Workflows · Prometheus · Argo
Blog
Notebook entries from mentors still shipping nights
2025-07-03
Why we rehearse journald breadcrumbs before touching Ansible handlers
Handlers flap when operators cannot trace order of execution. We choreograph logging before touching idempotency tricks.
Tags: Infrastructure Automation · Ansible
2025-05-29
SBOM diffs as a release artifact, not an audit checkbox
Cosign signatures matter, yet reviewers still ask what changed between digests. We treat SPDX diffs as narrative objects.
Tags: Containers · Cosign
2025-04-17
SLO documents that product managers actually annotate
Burn charts mean nothing if PMs never initial the exclusions list. We borrow language from incident retros to make SLOs legible.
Tags: Monitoring · SLOs
2025-03-08
Teaching protected branches without pretending risk is binary
GitLab CI labs include deliberate merge request conflicts so students practice approvals under mild political pressure.
Tags: CI/CD · GitLab
