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Use Packer 1.6+ HCL2 to parameterize builders, provisioners, and post‑processors. This guide shows the minimal design, trust boundaries, and operational checks for a reusable, version‑controlled image build workflow.
If you need to produce VM or cloud images for both amd64 and arm64, Packer’s new multi‑arch syntax lets you do it in one run. This post shows the exact HCL2 syntax, a working example, and what to watch out for.
DNS Resolution Timing in Packer HCL2 Templates When configuring Packer templates with multiple network interfaces or custom DNS settings, there is an unresolved question about when DNS resolution occurs relative to template validation and builder initialization. The HCL2 syntax allows defining custom DNS servers through builder configurations like dns_server