Astra

Astra is a control-plane datastore for workloads that want etcd semantics without inheriting etcd’s scaling ceilings as-is.

It keeps the etcd client contract where it matters for real control planes, then layers in:

• disaggregated storage and object-tier options,
• tenant virtualization for shared control-plane infrastructure,
• workload-aware batching and QoS controls,
• migration tooling for etcd snapshots and multi-source cutovers,
• validated deployment paths for K3s and Omni.

Start here

• New user: /getting-started
• Replacing etcd: /etcd-replacement
• Running K3s on Astra: /guides/deploy-k3s-single-node
• Running Omni on Astra: /guides/deploy-omni-with-astra
• Migration tooling: /guides/migration-etcd-generic and /guides/migration-omni
• Benchmarks and research: /research/benchmark-results

What Astra is good at

• Kubernetes and K3s control-plane state
• shared multi-tenant control-plane backends
• Omni external-etcd backends
• control planes that need predictable behavior under watch fanout, LIST pressure, or disk constraints

What to read next

• /deployment for deployment choices
• /operations/troubleshooting for common failure modes
• /reference/config/env-vars for runtime tuning
• /research/design-decisions for the why behind the implementation