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TencentDB for MongoDB
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    Monitoring Feature

    Last updated: 2023-08-15 17:00:31
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      The monitoring feature provided by TencentDB for MongoDB allows you to view the real-time monitoring metric data of instance resources. It collects the monitoring statistics in various forms such as visual chart, table, and dashboard. In addition, it supports setting alarms and pushing alarm notifications promptly, so that you can stay up to date with database service exceptions and adjust your business in time to guarantee stable business operations.

      Monitoring Granularity

      TencentDB for MongoDB currently doesn't allow you to customize the monitoring data collection granularity. The adaptive policy is as follows:
      Time Span
      Monitoring Granularity
      Retention Period
      0–1 day
      5 seconds
      1 day
      0–1 day
      1 minute
      15 days
      0–1 day
      5 minutes
      31 days
      0–1 day
      1 hour
      93 days
      0–1 day
      1 days
      186 days
      0–7 days
      1 hour
      93 days
      0–7 days
      1 day
      186 days
      7–30 days
      1 hour
      93 days
      7–30 days
      1 day
      186 days

      Instance Types for Monitoring

      Instance: Primary, read-only, and disaster recovery instances can be monitored, and each instance is provided with a separate monitoring view.
      Node: All mongod and mongos nodes can be monitored, and each node is provided with a separate monitoring view.

      Monitoring Metrics

      Instances

      Dimension
      Monitoring Metric
      Parameter
      Unit
      Metric Description
      CPU Monitoring
      Max CPU Utilization of Mongod
      mongod_max_mem_usage
      %
      Maximum CPU utilization among all mongod nodes in the cluster.
      Average Mongod CPU Utilization
      monogd_avg_cpu_usage
      %
      Average CPU utilization of all mongod nodes in the cluster.
      Max CPU Utilization of Mongos
      monogs_max_cpu_usage
      %
      Maximum CPU utilization among all mongos nodes in the sharded cluster.
      Average Mongos CPU Utilization
      monogs_avg_cpu_usage
      %
      Average CPU utilization of all mongos nodes in the sharded cluster.
      Memory Monitoring
      Max Memory Utilization of Mongod
      mongod_max_mem_usage
      %
      Maximum memory utilization among all mongod nodes in the cluster.
      Average Memory Utilization of Mongod
      mongod_avg_mem_usage
      %
      Average memory utilization of all mongod nodes in the cluster.
      Max Memory Utilization of Mongos
      mongos_max_mem_usage
      %
      Maximum memory utilization among all mongos nodes in the sharded cluster.
      Average Memory Utilization of Mongos
      mongos_avg_mem_usage
      %
      Average memory utilization of all mongos nodes in the sharded cluster.
      Disk Monitoring
      Storage Space Utilization
      disk_usage
      %
      Proportion of the used disk space to the disk space applied for.
      Network Monitoring
      Connections
      cluster_conn
      Pcs
      Number of TCP connections to the instance.
      Connection Percentage
      connper
      %
      Proportion of current connections to the maximum connections.
      Inbound Traffic
      cluster_view
      Bytes
      Number of bytes in the traffic inbound to the cluster.
      Outbound Traffic
      cluster_netout
      Bytes
      Number of bytes in the traffic outbound from the cluster.
      Latency Monitoring
      Average Latency of All Requests
      avg_all_request_delay
      ms
      Average execution latency of all requests in the cluster.
      Average Update Delay
      avg_update_delay
      ms
      Average latency of update requests in the cluster.
      Average Insertion Delay
      avg_insert_delay
      ms
      Average latency of insertion requests in the cluster.
      Average Read Latency
      avg_read_delay
      ms
      Average latency of read requests in the cluster.
      Average Latency of Aggregate Requests
      avg_aggregate_delay
      ms
      Average latency of aggregate requests in the cluster.
      Average Count Delay
      avg_count_delay
      ms
      Average latency of count requests in the cluster.
      Average getMore Delay
      avg_getmore_delay
      ms
      Average latency of getMore requests in the cluster.
      Average Deletion Delay
      avg_delete_delay
      ms
      Average latency of deletion requests in the cluster.
      Average Command Latency
      avg_command_delay
      ms
      Average latency of command requests in the cluster other than INSERT, UPDATE, DELETE, and QUERY requests.
      10–50 ms
      10 ms
      -
      Number of requests with an execution time between 10 and 50 ms.
      50–100 ms
      50 ms
      -
      Number of requests with an execution time between 50 and 100 ms.
      100 ms
      100 ms
      -
      Number of requests with an execution time of more than 100 ms.
      Request Monitoring
      Total Requests
      success_per_second
      Counts/sec
      Number of requests successfully executed in the cluster per second.
      Insert Requests
      insert_per_second
      Counts/sec
      Number of insertion requests executed in the cluster per second.
      Read Requests
      read_per_second
      Counts/sec
      Number of read requests executed in the cluster per second.
      Update Requests
      update_per_second
      Counts/sec
      Number of update requests executed in the cluster per second.
      Deletion Requests
      delete_per_second
      Counts/sec
      Number of deletion requests executed in the cluster per second.
      Count Requests
      count_per_second
      Counts/sec
      Number of count requests received by the cluster per second.
      getMore Requests
      getmore_per_second
      Counts/sec
      Number of getMore requests received by the cluster per second.
      Aggregate Requests
      aggregate_per_second
      Counts/sec
      Number of aggregate requests in the cluster per second.
      Command Requests
      command_per_second
      Counts/sec
      Number of command requests received by the cluster per second other than INSERT, UPDATE, DELETE, and QUERY requests.
      Request Count
      Total requests
      node_success
      -
      Total number of requests in the cluster.
      Insert Requests
      node_inserts
      -
      Number of insertion requests received by the cluster.
      Read Requests
      node_reads
      -
      Number of read requests received by the cluster.
      Update Requests
      node_updates
      -
      Number of update requests in the cluster.
      Deletion Requests
      node_deletes
      -
      Number of deletion requests in the cluster.
      Count Requests
      node_counts
      -
      Number of count requests received by the cluster.
      getMore Requests
      node_getmores
      -
      Number of getMore requests received by the cluster.
      Aggregate Requests
      node_aggregates
      -
      Number of aggregate requests in the cluster.
      Command Requests
      node_commands
      -
      Number of command requests received by the cluster other than INSERT, UPDATE, DELETE, and QUERY requests.
      

      Mongod node

      Dimension
      Monitoring Metric
      Parameter
      Unit
      Metric Description
      CPU Monitoring
      CPU Utilization
      cpuusage
      %
      CPU utilization of the mongod node.
      Memory Monitoring
      Memory Utilization
      memusage
      %
      Memory utilization of the mongod node.
      Disk Monitoring
      Used Disk Space
      diskusage
      MBytes
      Disk capacity usage of the mongod node.
      Disk Reads
      ioread
      Counts/sec
      Number of writes on the mongod node per second.
      Disk Writes
      iowrite
      Counts/sec
      Number of writes on the mongod node per second.
      Network Monitoring
      Inbound Traffic
      netout
      Bytes
      Number of bytes in the traffic inbound to the mongod node.
      Outbound Traffic
      netin
      Bytes
      Number of bytes in the traffic outbound from the mongod node.
      Average Request Latency Monitoring
      Average Latency of All Requests
      node_avg_all_requests_delay
      ms
      Average latency of all requests received by the mongod node.
      Average Update Delay
      node_avg_update_delay
      ms
      Average latency of update requests on the mongod node.
      Average Insertion Delay
      node_avg_insert_delay
      ms
      Average latency of insertion requests on the mongod node.
      Average Read Latency
      node_avg_read_delay
      ms
      Average latency of read requests on the mongod node.
      Average Latency of Aggregate Requests
      node_avg_aggregate_delay
      ms
      Average latency of aggregate requests on the mongod node.
      Average Count Delay
      node_avg_count_delay
      ms
      Average latency of count requests on the mongod node.
      Average getMore Delay
      node_avg_getmore_delay
      ms
      Average latency of getMore requests on the mongos node.
      Average Deletion Delay
      node_avg_delete_delay
      ms
      Average latency of deletion requests on the mongod node.
      Average Command Latency
      node_avg_command_delay
      ms
      Average latency of command requests on the mongod node.
      10-50 ms
      10 ms
      -
      Number of requests with an execution time between 10 and 50 ms.
      50-100 ms
      50 ms
      -
      Number of requests with an execution time between 50 and 100 ms.
      100 ms
      100 ms
      -
      Number of requests with an execution time of more than 100 ms.
      Request Monitoring
      Total Requests
      node_success_per_second
      Counts/sec
      Total number of requests on the mongod node per second.
      Insert Requests
      node_insert_per_second
      Counts/sec
      Number of insertion requests on the mongod node per second.
      Read Requests
      node_read_per_second
      Counts/sec
      Number of read requests on the mongod node per second.
      Update Requests
      node_update_per_second
      Counts/sec
      Number of update requests on the mongod node per second.
      Deletion Requests
      node_delete_per_second
      Counts/sec
      Number of deletion requests on the mongod node per second.
      Count Requests
      node_count_per_second
      Counts/sec
      Number of count requests received by the mongod node per second.
      getMore Requests
      node_getmore_per_second
      Counts/sec
      Number of getMore requests received by the mongod node per second.
      Aggregate Requests
      node_aggregate_per_second
      Counts/sec
      Number of aggregate requests in the mongod node per second.
      Command Requests
      node_command_per_second
      Counts/sec
      Number of command requests received by the mongod node per second other than INSERT, UPDATE, DELETE, and QUERY requests.
      Kernel Monitoring
      Active Write Requests
      ar
      -
      Number of active write requests on the mongod node.
      Active Read Requests
      aw
      -
      Number of active read requests on the mongod node.
      Queuing Read Requests
      qr
      -
      Length of the client read request queue on the mongod node.
      Queuing Write Requests
      qw
      -
      Length of the client write request queue on the mongod node.
      Pieces of Data Deleted via TTL
      ttl_deleted
      -
      Number of documents deleted through TTL on the mongod node.
      TTL Initiation Times
      ttl_pass
      -
      Number of documents deletions from the TTL collection performed by the backend process.
      Active Sessions
      active_session
      -
      Number of active sessions on the node.
      Oplog Retention Period
      node_oplog_reserved_time
      hours
      Oplog retention period.
      Primary/Secondary Delay
      node_slavedelay
      seconds
      Delay time between the primary and secondary nodes.
      Cache Hit Rate
      replicaset_node
      %
      Cache hit rate of the current cluster.
      Cache Utilization (%)
      node_cache_used
      %
      Percentage of the used cache to the total cache space.
      Dirty Data (%) in Cache
      node_cache_dirty
      %
      Percentage of the size of dirty data in the cache to the total cache space.
      Request Count
      Total requests
      node_success
      -
      Total number of requests in the cluster.
      Insert Requests
      node_inserts
      -
      Number of insertion requests in the cluster.
      Read Requests
      node_reads
      -
      Number of read requests in the cluster.
      Update Requests
      replicaset_node
      -
      Number of update requests in the cluster.
      Delete Requests
      node_deletes
      -
      Number of deletion requests in the cluster.
      Count Requests
      node_counts
      -
      Number of count requests received by the cluster.
      getMore Requests
      node_getmores
      -
      Number of getMore requests received by the cluster.
      Aggregate Requests
      node_aggregates
      -
      Number of aggregate requests in the cluster.
      Command Requests
      node_commands
      -
      Number of command requests received by the cluster other than INSERT, UPDATE, DELETE, and QUERY requests.
      

      Mongos node (sharded cluster)

      Dimension
      Monitoring Metric
      Monitoring Metric
      Unit
      Metric Description
      CPU Monitoring
      CPU Utilization
      cpuusage
      %
      CPU utilization of the mongos node.
      Memory Monitoring
      Memory Utilization
      memusage
      %
      Memory utilization of the mongos node.
      Network Monitoring
      Private Inbound Traffic
      netout
      Bytes
      Number of bytes in the traffic inbound to the mongos node.
      Private Outbound Traffic
      netin
      Bytes
      Number of bytes in the traffic outbound from the mongos node.
      Latency Monitoring
      Average Latency of All Requests
      node_avg_all_request_delay
      ms
      Average latency of all requests received by the mongos node.
      Average Update Delay
      node_avg_update_delay
      ms
      Average latency of update requests on the mongos node.
      Average Insertion Delay
      replicaset_node
      ms
      Average latency of insertion requests on the mongos node.
      Average Read Latency
      node_avg_read_delay
      ms
      Average latency of read requests on the mongos node.
      Average Latency of Aggregate Requests
      node_avg_aggregate_delay
      ms
      Average latency of aggregate requests on the mongos node.
      Average Count Delay
      node_avg_count_delay
      ms
      Average latency of count requests on the mongos node.
      Average getMore Delay
      node_avg_getmore_delay
      ms
      Average latency of getMore requests on the mongos node.
      Average Deletion Delay
      node_avg_delete_delay
      ms
      Average latency of deletion requests on the mongos node.
      Average Command Latency
      node_avg_command_delay
      ms
      Average latency of command requests on the mongos node other than INSERT, UPDATE, DELETE, and QUERY requests.
      10-50 ms
      10 ms
      -
      Number of requests per second with an execution time between 10 and 50 ms.
      50-100 ms
      50 ms
      -
      Number of requests per second with an execution time between 50 and 100 ms.
      100 ms
      100 ms
      -
      Number of requests per second with an execution time of more than 100 ms.
      Request Monitoring
      Total Requests
      qps
      Counts/sec
      Total number of requests on the mongos node per second.
      Insert Requests
      inserts
      Counts/sec
      Number of insertion requests on the mongos node per second.
      Read Requests
      reads
      Counts/sec
      Number of read requests on the mongos node per second.
      Update Requests
      updates
      Counts/sec
      Number of update requests on the mongos node per second.
      Deletion Requests
      deletes
      Counts/sec
      Number of deletion requests on the mongos node per second.
      Count Requests
      counts
      Counts/sec
      Number of count requests received by the mongos node per second.
      getMore Requests
      getmores
      Counts/sec
      Number of getMore requests received by the mongos node per second.
      Aggregate Requests
      aggregates
      Counts/sec
      Number of aggregate requests in the mongos node per second.
      Command Requests
      commands
      Counts/sec
      Number of command requests received by the mongos node per second other than INSERT, UPDATE, DELETE, and QUERY requests.
      Request Count
      Total requests
      node_success
      -
      Total number of requests received by the mongos node.
      Insert Requests
      node_inserts
      -
      Number of insertion requests received by the mongos node.
      Read Requests
      node_reads
      -
      Number of read requests received by the mongos node.
      Update Requests
      node_updates
      -
      Number of update requests received by the mongos node.
      Delete Requests
      node_deletes
      -
      Number of deletion requests received by the mongos node.
      Count Requests
      node_counts
      -
      Number of count requests received by the mongos node.
      getMore Requests
      node_getmores
      -
      Number of getMore requests received by the mongos node.
      Aggregate Requests
      node_aggregates
      -
      Number of aggregate requests received by the mongos node.
      Command Requests
      node_commands
      -
      Number of command requests received by the mongos node other than INSERT, UPDATE, DELETE, and QUERY requests.
      
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