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Intent Nornir Napalm

Build idempotent network intent with Nornir and NAPALM, inventory from NetBox. Use when replacing a hop-by-hop CLI change with a rendered, diffed, dry-run pipeline.

gesh75 Updated
DevOps & Infra

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Intent with Nornir / NAPALM

Do not use for one-off show commands. Not for Ansible-vs-Nornir debates.

Procedure

  1. Inventory from NetBox (nornir-netbox). Filters are site, role, platform — never a handwritten host list.
  2. Render Jinja from intent data. No device-specific if-hacks if a platform plugin exists.
  3. NAPALM get_config + compare_config before commit. Print the diff in the ticket.
  4. Idempotence: a second run produces an empty diff.
  5. Verify on a canary device, then the rest, with change-guard.
from nornir_napalm.plugins.tasks import napalm_configure
r = nr.filter(site="dc1", role="leaf").run(task=napalm_configure, dry_run=True, filename="evpn.j2")

Anti-patterns

  • Never send_command a config snippet that cannot be diffed.
  • Do not keep a parallel YAML inventory "just in case".

Safety

dry_run is the default. commit is change-guarded.

gesh75/claude-skill-lint/tree/main/skills/netops/intent-nornir-napalm commit db40f1afae

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Frequently asked questions

npx skillmds@latest add gesh75/intent-nornir-napalm