Kolla-Ansible Production Architecture
How Kolla-Ansible actually structures an OpenStack deployment, where configuration comes from, and how to make changes without discovering them during an outage.
expert· 3 minOpenStackKolla-Ansible
Pillar
Cloud & OpenStack
Cloud infrastructure from the operator side. OpenStack receives particular depth here because production OpenStack knowledge is scarce, hard-won, and rarely written down honestly.
What this section covers
Consolidated guides rather than a page per concept. Each area below is one resource, or will be, rather than a cluster of near-duplicates.
Control plane architecture
Identity, placement, quota, and the message bus that ties services together — plus the ways a control plane fails without returning an error.
Compute and scheduling
How placement decisions are made, why `NoValidHost` is usually a service-state problem rather than a capacity problem, and how to prove which it is.
Networking and storage
Agent state, tunnelling, security groups, volume backends, and the correlation between an agent going quiet and a workload failing to build.
Operations and upgrades
Deployment tooling, configuration management, upgrade sequencing, and the health checks worth running before you believe a cluster is fine.
Resources
Resources in this pillar
Every resource states its author, its review status, and whether the procedures in it were executed or only reviewed.
OpenStack Production Operations
Operating OpenStack in production: service state versus status, the message bus, placement disagreements, and the quiet failures that keep dashboards green.
expert· 3 minOpenStackNova
Topics
OpenStack
OpenStack has its own hub because it carries enough depth to justify one — and because honest production OpenStack material is genuinely scarce.
Where this connects
No layer of the stack is operated in isolation. These are the sections you are most likely to need next.
OpenStackThe deepest section of this pillar: Nova, Neutron, Cinder, Keystone, and Kolla-Ansible in production.Go →AI InfrastructureThe hardware this control plane is scheduling, and what it assumes about it.Go →RunbooksProcedures for the failures described here, with validation and rollback steps.Go →
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