Cassandra Node is unavailable critical
Cassandra Node is unavailable - {{ $labels.cassandra_cluster }} {{ $labels.exported_endpoint }}
>>>
sum
(
) by (cassandra_cluster,instance,exported_endpoint) < 1
The rule sums cassandra_endpoint_active for each cassandra_cluster, instance, and exported_endpoint. If the sum is less than 1 (i.e., zero active endpoints) for a given combination, the alert fires, indicating that the Cassandra node is unavailable.
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