parameters:
  heka:
    metric_collector:
      trigger:
        # Override the linux_system_cpu_critical and linux_system_cpu_warning
        # triggers to use specific rules on control nodes
        linux_system_cpu_critical:
          description: 'The CPU usage is too high (controller node)'
          severity: critical
          rules:
          - metric: cpu_idle
            relational_operator: '<='
            threshold: 5
            window: 120
            periods: 0
            function: avg
          - metric: cpu_wait
            relational_operator: '>='
            threshold: 35
            window: 120
            periods: 0
            function: avg
        linux_system_cpu_warning:
          description: 'The CPU usage is high (controller node)'
          severity: 'warning'
          enabled: 'true'
          rules:
          - metric: cpu_idle
            relational_operator: '<='
            threshold: 15
            window: 120
            periods: 0
            function: avg
          - metric: cpu_wait
            relational_operator: '>='
            threshold: 25
            window: 120
            periods: 0
            function: avg
      alarm:
        # Tag all the system alarm metrics with "node_role: control". This
        # to be able to create an alarm cluster for control nodes.
        linux_system_cpu:
          alerting: enabled
          triggers:
          - linux_system_cpu_critical
          - linux_system_cpu_warning
          dimension:
            node_role: control
        linux_system_swap:
          alerting: enabled
          triggers:
          - linux_system_swap_usage_critical
          - linux_system_swap_activity_warning
          - linux_system_swap_usage_warning
          dimension:
            node_role: control
        linux_system_root_fs:
          alerting: enabled
          triggers:
          - linux_system_root_fs_critical
          - linux_system_root_fs_warning
          dimension:
            node_role: control
        linux_system_network_rx:
          alerting: enabled
          triggers:
          - linux_system_network_critical_dropped_rx
          - linux_system_network_warning_dropped_rx
          dimension:
            node_role: control
        linux_system_network_tx:
          alerting: enabled
          triggers:
          - linux_system_network_critical_dropped_tx
          - linux_system_network_warning_dropped_tx
          dimension:
            node_role: control
        linux_system_hdd_errors:
          alerting: enabled_with_notification
          triggers:
          - linux_system_hdd_errors_critical
          dimension:
            node_role: control
    aggregator:
      alarm_cluster:
        control_nodes:
          policy: status_of_members
          alerting: enabled_with_notification
          group_by: hostname
          match:
            node_role: control
          members:
          - linux_system_cpu
          - linux_system_swap
          - linux_system_root_fs
          - linux_system_network_rx
          - linux_system_network_tx
          - linux_system_hdd_errors
          dimension:
            cluster_name: control
            nagios_host: 01-node-clusters