What is DescribeCluster?
Returns the authoritative list of brokers, the active controller, and cluster-level authorized operations via AdminClient.describeCluster(). Unlike Metadata, this can filter by endpoint type (broker vs controller), which matters in KRaft mode where controllers may not be brokers.
Wire Diagram
Request Header · flexible
message_size
int32 · 4B
api_key
int16 · 2B
api_version
int16 · 2B
correlation_id
int32 · 4B
client_id
string (compact)
tagged
var
DescribeClusterRequest v2
IncludeClusterAuthorizedOperations
bool · 1B
EndpointType
int8 · 1B
IncludeFencedBrokers
bool · 1B
tagged
var
Schema & Example
Schema { "IncludeClusterAuthorizedOperations": bool, "EndpointType": int8, "IncludeFencedBrokers": bool }
Example { "IncludeClusterAuthorizedOperations": 2, "EndpointType": 1, "IncludeFencedBrokers": true }