Skip to main content
Sumo Logic

Cassandra Alerts

Sumo Logic has provided out-of-the-box alerts available via Sumo Logic monitors to help you quickly determine if the Cassandra cluster is available and performing as expected.

Sumo Logic has provided out-of-the-box alerts available via Sumo Logic monitors to help you quickly determine if the Cassandra cluster is available and performing as expected.

Alert Name Alert Description Alert Condition Recover Condition

Cassandra - Increase in Authentication Failures

This alert fires when there is an increase of Cassandra authentication failures.

>5 <= 5

Cassandra - Cache Hit Rate below 85 Percent

This alert fires when the cache key hit rate is below 85%.

<85 >= 85

Cassandra - High Commitlog Pending Tasks

This alert fires when there are more than 15 Commitlog tasks that are pending.

>15 <= 15

Cassandra - High Number of Compaction Executor Blocked Tasks

This alert fires when there are more than 15 compaction executor tasks blocked for more than 5 minutes.

>15 <= 15

Cassandra - Compaction Task Pending

This alert fires when there are many Cassandra compaction tasks that are pending. You might need to increase I/O capacity by adding nodes to the cluster.

>100 <= 100

Cassandra - High Number of Flush Writer Blocked Tasks

This alert fires when there is a high number of flush writer tasks which are blocked.

>15 <= 15

Cassandra - Many Compaction Tasks Are Pending

Many Cassandra compaction tasks are pending

>100 <= 100

Cassandra - Node Down

This alert fires when one or more Cassandra nodes are down

>0 <= 0

Cassandra - Blocked Repair Tasks

This alert fires when the repair tasks are blocked

>2 <= 2

Cassandra - Repair Tasks Pending

This alert fires when repair tasks are pending.

>2 <= 2

Cassandra - High Tombstone Scanning

This alert fires when tombstone scanning is very high (>1000 99th Percentile) in queries.

>1000 <= 1000