netdata/health/health.d/vernemq.conf

# Socket errors

 template: vernemq_socket_errors
       on: vernemq.socket_errors
    class: Errors
     type: Messaging
component: VerneMQ
   lookup: sum -1m unaligned absolute of socket_error
    units: errors
    every: 1m
     warn: $this > (($status >= $WARNING) ? (0) : (5))
    delay: up 2m down 5m multiplier 1.5 max 2h
     info: number of socket errors in the last minute
       to: sysadmin

# Queues dropped/expired/unhandled PUBLISH messages

 template: vernemq_queue_message_drop
       on: vernemq.queue_undelivered_messages
    class: Errors
     type: Messaging
component: VerneMQ
   lookup: average -1m unaligned absolute of queue_message_drop
    units: dropped messages
    every: 1m
     warn: $this > (($status >= $WARNING) ? (0) : (5))
    delay: up 2m down 5m multiplier 1.5 max 2h
     info: number of dropped messaged due to full queues in the last minute
       to: sysadmin

 template: vernemq_queue_message_expired
       on: vernemq.queue_undelivered_messages
    class: Latency
     type: Messaging
component: VerneMQ
   lookup: average -1m unaligned absolute of queue_message_expired
    units: expired messages
    every: 1m
     warn: $this > (($status >= $WARNING) ? (0) : (5))
    delay: up 2m down 5m multiplier 1.5 max 2h
     info: number of messages which expired before delivery in the last minute
       to: sysadmin

 template: vernemq_queue_message_unhandled
       on: vernemq.queue_undelivered_messages
    class: Latency
     type: Messaging
component: VerneMQ
   lookup: average -1m unaligned absolute of queue_message_unhandled
    units: unhandled messages
    every: 1m
     warn: $this > (($status >= $WARNING) ? (0) : (5))
    delay: up 2m down 5m multiplier 1.5 max 2h
     info: number of unhandled messages (connections with clean session=true) in the last minute
       to: sysadmin

# Erlang VM

 template: vernemq_average_scheduler_utilization
       on: vernemq.average_scheduler_utilization
    class: Utilization
     type: Messaging
component: VerneMQ
   lookup: average -10m unaligned
    units: %
    every: 1m
     warn: $this > (($status >= $WARNING)  ? (75) : (85))
     crit: $this > (($status == $CRITICAL) ? (85) : (95))
    delay: down 15m multiplier 1.5 max 1h
     info: average scheduler utilization over the last 10 minutes
       to: sysadmin

# Cluster communication and netsplits

 template: vernemq_cluster_dropped
       on: vernemq.cluster_dropped
    class: Errors
     type: Messaging
component: VerneMQ
   lookup: sum -1m unaligned
    units: KiB
    every: 1m
     warn: $this > 0
    delay: up 5m down 5m multiplier 1.5 max 1h
     info: amount of traffic dropped during communication with the cluster nodes in the last minute
       to: sysadmin

 template: vernemq_netsplits
       on: vernemq.netsplits
    class: Workload
     type: Messaging
component: VerneMQ
   lookup: sum -1m unaligned absolute of netsplit_detected
    units: netsplits
    every: 10s
     warn: $this > 0
    delay: down 5m multiplier 1.5 max 2h
     info: number of detected netsplits (split brain situation) in the last minute
       to: sysadmin

# Unsuccessful CONNACK

 template: vernemq_mqtt_connack_sent_reason_unsuccessful
       on: vernemq.mqtt_connack_sent_reason
    class: Errors
     type: Messaging
component: VerneMQ
   lookup: average -1m unaligned absolute match-names of !success,*
    units: packets
    every: 1m
     warn: $this > (($status >= $WARNING) ? (0) : (5))
    delay: up 2m down 5m multiplier 1.5 max 2h
     info: number of sent unsuccessful v3/v5 CONNACK packets in the last minute
       to: sysadmin

# Not normal DISCONNECT

 template: vernemq_mqtt_disconnect_received_reason_not_normal
       on: vernemq.mqtt_disconnect_received_reason
    class: Workload
     type: Messaging
component: VerneMQ
   lookup: average -1m unaligned absolute match-names of !normal_disconnect,*
    units: packets
    every: 1m
     warn: $this > (($status >= $WARNING) ? (0) : (5))
    delay: up 2m down 5m multiplier 1.5 max 2h
     info: number of received not normal v5 DISCONNECT packets in the last minute
       to: sysadmin

 template: vernemq_mqtt_disconnect_sent_reason_not_normal
       on: vernemq.mqtt_disconnect_sent_reason
    class: Errors
     type: Messaging
component: VerneMQ
   lookup: average -1m unaligned absolute match-names of !normal_disconnect,*
    units: packets
    every: 1m
     warn: $this > (($status >= $WARNING) ? (0) : (5))
    delay: up 2m down 5m multiplier 1.5 max 2h
     info: number of sent not normal v5 DISCONNECT packets in the last minute
       to: sysadmin

# SUBSCRIBE errors and unauthorized attempts

 template: vernemq_mqtt_subscribe_error
       on: vernemq.mqtt_subscribe_error
    class: Errors
     type: Messaging
component: VerneMQ
   lookup: average -1m unaligned absolute
    units: failed ops
    every: 1m
     warn: $this > (($status >= $WARNING) ? (0) : (5))
    delay: up 2m down 5m multiplier 1.5 max 2h
     info: number of failed v3/v5 SUBSCRIBE operations in the last minute
       to: sysadmin

 template: vernemq_mqtt_subscribe_auth_error
       on: vernemq.mqtt_subscribe_auth_error
    class: Workload
     type: Messaging
component: VerneMQ
   lookup: average -1m unaligned absolute
    units: attempts
    every: 1m
     warn: $this > (($status >= $WARNING) ? (0) : (5))
    delay: up 2m down 5m multiplier 1.5 max 2h
     info: number of unauthorized v3/v5 SUBSCRIBE attempts in the last minute
       to: sysadmin

# UNSUBSCRIBE errors

 template: vernemq_mqtt_unsubscribe_error
       on: vernemq.mqtt_unsubscribe_error
    class: Errors
     type: Messaging
component: VerneMQ
   lookup: average -1m unaligned absolute
    units: failed ops
    every: 1m
     warn: $this > (($status >= $WARNING) ? (0) : (5))
    delay: up 2m down 5m multiplier 1.5 max 2h
     info: number of failed v3/v5 UNSUBSCRIBE operations in the last minute
       to: sysadmin

# PUBLISH errors and unauthorized attempts

 template: vernemq_mqtt_publish_errors
       on: vernemq.mqtt_publish_errors
    class: Errors
     type: Messaging
component: VerneMQ
   lookup: average -1m unaligned absolute
    units: failed ops
    every: 1m
     warn: $this > (($status >= $WARNING) ? (0) : (5))
    delay: up 2m down 5m multiplier 1.5 max 2h
     info: number of failed v3/v5 PUBLISH operations in the last minute
       to: sysadmin

 template: vernemq_mqtt_publish_auth_errors
       on: vernemq.mqtt_publish_auth_errors
    class: Workload
     type: Messaging
component: VerneMQ
   lookup: average -1m unaligned absolute
    units: attempts
    every: 1m
     warn: $this > (($status >= $WARNING) ? (0) : (5))
    delay: up 2m down 5m multiplier 1.5 max 2h
     info: number of unauthorized v3/v5 PUBLISH attempts in the last minute
       to: sysadmin

# Unsuccessful and unexpected PUBACK

 template: vernemq_mqtt_puback_received_reason_unsuccessful
       on: vernemq.mqtt_puback_received_reason
    class: Errors
     type: Messaging
component: VerneMQ
   lookup: average -1m unaligned absolute match-names of !success,*
    units: packets
    every: 1m
     warn: $this > (($status >= $WARNING) ? (0) : (5))
    delay: up 2m down 5m multiplier 1.5 max 2h
     info: number of received unsuccessful v5 PUBACK packets in the last minute
       to: sysadmin

 template: vernemq_mqtt_puback_sent_reason_unsuccessful
       on: vernemq.mqtt_puback_sent_reason
    class: Errors
     type: Messaging
component: VerneMQ
   lookup: average -1m unaligned absolute match-names of !success,*
    units: packets
    every: 1m
     warn: $this > (($status >= $WARNING) ? (0) : (5))
    delay: up 2m down 5m multiplier 1.5 max 2h
     info: number of sent unsuccessful v5 PUBACK packets in the last minute
       to: sysadmin

 template: vernemq_mqtt_puback_unexpected
       on: vernemq.mqtt_puback_invalid_error
    class: Workload
     type: Messaging
component: VerneMQ
   lookup: average -1m unaligned absolute
    units: messages
    every: 1m
     warn: $this > (($status >= $WARNING) ? (0) : (5))
    delay: up 2m down 5m multiplier 1.5 max 2h
     info: number of received unexpected v3/v5 PUBACK packets in the last minute
       to: sysadmin

# Unsuccessful and unexpected PUBREC

 template: vernemq_mqtt_pubrec_received_reason_unsuccessful
       on: vernemq.mqtt_pubrec_received_reason
    class: Errors
     type: Messaging
component: VerneMQ
   lookup: average -1m unaligned absolute match-names of !success,*
    units: packets
    every: 1m
     warn: $this > (($status >= $WARNING) ? (0) : (5))
    delay: up 2m down 5m multiplier 1.5 max 2h
     info: number of received unsuccessful v5 PUBREC packets in the last minute
       to: sysadmin

 template: vernemq_mqtt_pubrec_sent_reason_unsuccessful
       on: vernemq.mqtt_pubrec_sent_reason
    class: Errors
     type: Messaging
component: VerneMQ
   lookup: average -1m unaligned absolute match-names of !success,*
    units: packets
    every: 1m
     warn: $this > (($status >= $WARNING) ? (0) : (5))
    delay: up 2m down 5m multiplier 1.5 max 2h
     info: number of sent unsuccessful v5 PUBREC packets in the last minute
       to: sysadmin

 template: vernemq_mqtt_pubrec_invalid_error
       on: vernemq.mqtt_pubrec_invalid_error
    class: Workload
     type: Messaging
component: VerneMQ
   lookup: average -1m unaligned absolute
    units: messages
    every: 1m
     warn: $this > (($status >= $WARNING) ? (0) : (5))
    delay: up 2m down 5m multiplier 1.5 max 2h
     info: number of received unexpected v3 PUBREC packets in the last minute
       to: sysadmin

# Unsuccessful PUBREL

 template: vernemq_mqtt_pubrel_received_reason_unsuccessful
       on: vernemq.mqtt_pubrel_received_reason
    class: Errors
     type: Messaging
component: VerneMQ
   lookup: average -1m unaligned absolute match-names of !success,*
    units: packets
    every: 1m
     warn: $this > (($status >= $WARNING) ? (0) : (5))
    delay: up 2m down 5m multiplier 1.5 max 2h
     info: number of received unsuccessful v5 PUBREL packets in the last minute
       to: sysadmin

 template: vernemq_mqtt_pubrel_sent_reason_unsuccessful
       on: vernemq.mqtt_pubrel_sent_reason
    class: Errors
     type: Messaging
component: VerneMQ
   lookup: average -1m unaligned absolute match-names of !success,*
    units: packets
    every: 1m
     warn: $this > (($status >= $WARNING) ? (0) : (5))
    delay: up 2m down 5m multiplier 1.5 max 2h
     info: number of sent unsuccessful v5 PUBREL packets in the last minute
       to: sysadmin

# Unsuccessful and unexpected PUBCOMP

 template: vernemq_mqtt_pubcomp_received_reason_unsuccessful
       on: vernemq.mqtt_pubcomp_received_reason
    class: Errors
     type: Messaging
component: VerneMQ
   lookup: average -1m unaligned absolute match-names of !success,*
    units: packets
    every: 1m
     warn: $this > (($status >= $WARNING) ? (0) : (5))
    delay: up 2m down 5m multiplier 1.5 max 2h
     info: number of received unsuccessful v5 PUBCOMP packets in the last minute
       to: sysadmin

 template: vernemq_mqtt_pubcomp_sent_reason_unsuccessful
       on: vernemq.mqtt_pubcomp_sent_reason
    class: Errors
     type: Messaging
component: VerneMQ
   lookup: average -1m unaligned absolute match-names of !success,*
    units: packets
    every: 1m
     warn: $this > (($status >= $WARNING) ? (0) : (5))
    delay: up 2m down 5m multiplier 1.5 max 2h
     info: number of sent unsuccessful v5 PUBCOMP packets in the last minute
       to: sysadmin

 template: vernemq_mqtt_pubcomp_unexpected
       on: vernemq.mqtt_pubcomp_invalid_error
    class: Workload
     type: Messaging
component: VerneMQ
   lookup: average -1m unaligned absolute
    units: messages
    every: 1m
     warn: $this > (($status >= $WARNING) ? (0) : (5))
    delay: up 2m down 5m multiplier 1.5 max 2h
     info: number of received unexpected v3/v5 PUBCOMP packets in the last minute
       to: sysadmin