cluster-exchange verifiedimportantWritten by the Hub
Exchange carrying cluster messages
in the configuration this is a line
cluster-exchange: clusterName of the fanout exchange over which nodes announce themselves and control messages travel.
Values
- Values
any valid exchange name- Default
cluster · taken from the build- applying
restart required- where it can be set
in the config file · with a startup flag · as an environment variable
In detail
Observed on the stand as a fanout exchange named cluster, created by the engine at start-up. Every node binds a private queue to it, so a message published here reaches all of them — which is what makes {"reload": true} a cluster-wide action rather than a per-node one.