Migdalor is a cluster membership library for modern asyncio Python distributed systems running in Kubernetes.
Migdalor doesn't require a separate broker (e.g. Redis, etcd, Zookeeper, Chubby, etc) to work, but leverage Kubernetes out-of-the-box capabilities to solve the peer discovery problem.
- 🐍 Modern Asyncio Pythonic API
- 🔦 Brokerless Kubernetes native peer discovery based on headless services
- 🔭 Hooks into membership change events
- 🛠️ Ability to manage membership manually
pip install midgalor
# or
# poetry add midgalor
# pdm add midgalorimport migdalor
cluster = migdalor.Cluster(
node_address=(node_address), # the current node address (e.g. 127.0.0.1:8001)
discovery=migdalor.KubernetesServiceDiscovery(service_address=cluster_address), # Kubernetes headless service address (e.g. cluster:8000)
## Callbacks on different events
# nodes_added_handlers=[...]
# nodes_removed_handlers=[...],
## Membership update rate
# update_every_secs=10,
)
await cluster.start()
# You can also add or remove nodes manually if you support that in your protocol
await cluster.add([("127.0.0.1", 8001)])
# await cluster.remove([("127.0.0.1", 8001)])
await cluster.stop()Midgalor comes with some comprehensive example to help you get started:
- The Party Cluster - An example of using Migdalor to implement peer discovery in Kubernetes cluster