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DevOps & observability · #packer
Learn how to use Packer's HCL2 to build consistent images across AWS and GCP from a single configuration, eliminating image drift and reducing maintenance overhead.
A decision guide for standardizing on Packer HCL2 templates: constraints, a comparison with legacy JSON and script wrappers, a concrete validated template, and CI checks before promotion.
Packer lets you build identical machine images on AWS, Azure, GCP, and VMware from one HCL file. This post shows how to use source, provisioner, and build blocks to keep images consistent, plus trade‑offs and a verification checklist.
Step‑by‑step guide to define, validate, and build an Amazon‑EBS‑backed AMI using Packer, with verification and cleanup instructions.
Packer ensures reproducible Docker image builds through declarative templates. Learn the core workflow with a practical Node.js example and verification checklist.
Step-by-step diagnostic guide for Packer builds that stall at 'Waiting for machine to become communicable', covering communicator checks, instance IP verification, network testing, fixes, and escalation.
Packer post-processors can upload artifacts to S3 and trigger a CloudFormation stack update in the same template, closing the manual gap between build and deployment. Here's the pattern, the IAM gotchas, and how to verify it.
Learn how to use Packer HCL2 and the amazon-ebs builder to automate the creation of consistent, reproducible Amazon Machine Images (AMIs) and eliminate configuration drift.
Shell vs Ansible provisioners in Packer: compare idempotency, performance, and complexity, then see real HCL2 templates and validation steps to decide which fits your image‑building workflow.
aws
docker
ssh
ansible