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Glossary: Circus-specific termsΒΆ

arbiter
The arbiter is responsible for managing all the watchers within circus, ensuring all processes run correctly.
controller
A controller contains the set of actions that can be performed on the arbiter.
flapping
The flapping detection subscribes to events and detects when some processes are constantly restarting.
pub/sub
Circus has a pubsub that receives events from the watchers and dispatches them to all subscribers.
remote controller
The remote controller allows you to communicate with the controller via ZMQ to control Circus.
watcher
watchers
A watcher is the program you tell Circus to run. A single Circus instance can run one or more watchers.
worker
workers
process
processes
A process is an independent OS process instance of your program. A single watcher can run one or more processes. We also call them workers.