groups:

- name: InstaclustrCassandraExporter

  rules:

    - alert: CassandraNodeIsUnavailable
      expr: 'sum(cassandra_endpoint_active) by (cassandra_cluster,instance,exported_endpoint) < 1'
      for: 0m
      labels:
        severity: critical
      annotations:
        summary: Cassandra Node is unavailable (instance {{ $labels.instance }})
        description: "Cassandra Node is unavailable - {{ $labels.cassandra_cluster }} {{ $labels.exported_endpoint }}\n  VALUE = {{ $value }}\n  LABELS = {{ $labels }}"

    - alert: CassandraManyCompactionTasksArePending
      expr: 'cassandra_table_estimated_pending_compactions > 100'
      for: 0m
      labels:
        severity: warning
      annotations:
        summary: Cassandra many compaction tasks are pending (instance {{ $labels.instance }})
        description: "Many Cassandra compaction tasks are pending - {{ $labels.cassandra_cluster }}\n  VALUE = {{ $value }}\n  LABELS = {{ $labels }}"

    - alert: CassandraCommitlogPendingTasks
      expr: 'cassandra_commit_log_pending_tasks > 15'
      for: 2m
      labels:
        severity: warning
      annotations:
        summary: Cassandra commitlog pending tasks (instance {{ $labels.instance }})
        description: "Cassandra commitlog pending tasks - {{ $labels.cassandra_cluster }}\n  VALUE = {{ $value }}\n  LABELS = {{ $labels }}"

    - alert: CassandraCompactionExecutorBlockedTasks
      expr: 'cassandra_thread_pool_blocked_tasks{pool="CompactionExecutor"} > 15'
      for: 2m
      labels:
        severity: warning
      annotations:
        summary: Cassandra compaction executor blocked tasks (instance {{ $labels.instance }})
        description: "Some Cassandra compaction executor tasks are blocked - {{ $labels.cassandra_cluster }}\n  VALUE = {{ $value }}\n  LABELS = {{ $labels }}"

    - alert: CassandraFlushWriterBlockedTasks
      expr: 'cassandra_thread_pool_blocked_tasks{pool="MemtableFlushWriter"} > 15'
      for: 2m
      labels:
        severity: warning
      annotations:
        summary: Cassandra flush writer blocked tasks (instance {{ $labels.instance }})
        description: "Some Cassandra flush writer tasks are blocked - {{ $labels.cassandra_cluster }}\n  VALUE = {{ $value }}\n  LABELS = {{ $labels }}"

    - alert: CassandraConnectionTimeoutsTotal
      expr: 'avg(cassandra_client_request_timeouts_total) by (cassandra_cluster,instance) > 5'
      for: 2m
      labels:
        severity: critical
      annotations:
        summary: Cassandra connection timeouts total (instance {{ $labels.instance }})
        description: "Some connection between nodes are ending in timeout - {{ $labels.cassandra_cluster }}\n  VALUE = {{ $value }}\n  LABELS = {{ $labels }}"

    - alert: CassandraStorageExceptions
      expr: 'changes(cassandra_storage_exceptions_total[1m]) > 1'
      for: 0m
      labels:
        severity: critical
      annotations:
        summary: Cassandra storage exceptions (instance {{ $labels.instance }})
        description: "Something is going wrong with cassandra storage - {{ $labels.cassandra_cluster }}\n  VALUE = {{ $value }}\n  LABELS = {{ $labels }}"

    - alert: CassandraTombstoneDump
      expr: 'avg(cassandra_table_tombstones_scanned{quantile="0.99"}) by (instance,cassandra_cluster,keyspace) > 100'
      for: 2m
      labels:
        severity: critical
      annotations:
        summary: Cassandra tombstone dump (instance {{ $labels.instance }})
        description: "Cassandra tombstone dump - {{ $labels.cassandra_cluster }}\n  VALUE = {{ $value }}\n  LABELS = {{ $labels }}"

    - alert: CassandraClientRequestUnavailableWrite
      expr: 'changes(cassandra_client_request_unavailable_exceptions_total{operation="write"}[1m]) > 0'
      for: 2m
      labels:
        severity: critical
      annotations:
        summary: Cassandra client request unavailable write (instance {{ $labels.instance }})
        description: "Some Cassandra client requests are unavailable to write - {{ $labels.cassandra_cluster }}\n  VALUE = {{ $value }}\n  LABELS = {{ $labels }}"

    - alert: CassandraClientRequestUnavailableRead
      expr: 'changes(cassandra_client_request_unavailable_exceptions_total{operation="read"}[1m]) > 0'
      for: 2m
      labels:
        severity: critical
      annotations:
        summary: Cassandra client request unavailable read (instance {{ $labels.instance }})
        description: "Some Cassandra client requests are unavailable to read - {{ $labels.cassandra_cluster }}\n  VALUE = {{ $value }}\n  LABELS = {{ $labels }}"

    - alert: CassandraClientRequestWriteFailure
      expr: 'increase(cassandra_client_request_failures_total{operation="write"}[1m]) > 0'
      for: 2m
      labels:
        severity: critical
      annotations:
        summary: Cassandra client request write failure (instance {{ $labels.instance }})
        description: "Read failures have occurred, ensure there are not too many unavailable nodes - {{ $labels.cassandra_cluster }}\n  VALUE = {{ $value }}\n  LABELS = {{ $labels }}"

    - alert: CassandraClientRequestReadFailure
      expr: 'increase(cassandra_client_request_failures_total{operation="read"}[1m]) > 0'
      for: 2m
      labels:
        severity: critical
      annotations:
        summary: Cassandra client request read failure (instance {{ $labels.instance }})
        description: "Read failures have occurred, ensure there are not too many unavailable nodes - {{ $labels.cassandra_cluster }}\n  VALUE = {{ $value }}\n  LABELS = {{ $labels }}"