Complete procedures with a way back.

Ansible Missing sudo password and Host key verification failed are separate trust-boundary failures that can appear in the same run. Host key verification happens before remote login and protects the server identity; SSH authentication proves the automation identity; become authentication authorizes privilege escalation after login. This Guide separates those layers, starts with read-only evidence, verifies changed host keys out of band, and restores interactive or noninteractive become without disabling security controls.

Build a production catalog assistant that imports merchant-approved structured product data, generates reproducible embeddings, combines semantic retrieval with exact price and category filters, treats stale inventory as unknown, keeps recommendation language inside explicit boundaries, and turns account or order help into a local handoff draft that a merchant operator must approve before a separate dispatcher writes to support.

Build a pinned ansible-core 2.21 control environment, authenticated SSH inventory, exact roles and collections, named Vault IDs, least-privilege become, check/diff gates, rolling deployment, idempotency proof, and rollback.