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DDS Metrics

Table 1 DDS metrics

Metric

Description

Value Range

Remarks

Monitoring Period (Raw Data)

Command Operations per Second

Average number of the command statement execution times on MongoDB instances per second

Unit: Command/s

≥ 0 executions/s

Monitored object: database

Monitored instance type:

  • MongoDB instance
  • Mongos node
  • Primary node
  • Secondary node

1 minute

Delete Operations per Second

Average number of the delete statement execution times on MongoDB instances per second

Unit: Execution/s

≥ 0 executions/s

Monitored object: database

Monitored instance type:

  • MongoDB instance
  • Mongos node
  • Primary node
  • Secondary node

1 minute

Insert Operations per Second

Average number of the insert statement execution times on MongoDB instances per second

Unit: Execution/s

≥ 0 executions/s

Monitored object: database

Monitored instance type:

  • MongoDB instance
  • Mongos node
  • Primary node
  • Secondary node

1 minute

Query Operations per Second

Average number of the query statement execution times on MongoDB instances per second

Unit: Execution/s

≥ 0 executions/s

Monitored object: database

Monitored instance type:

  • MongoDB instance
  • Mongos node
  • Primary node
  • Secondary node

1 minute

Update Operations per Second

Average number of the update statement execution times on MongoDB instances per second

Unit: Execution/s

≥ 0 executions/s

Monitored object: database

Monitored instance type:

  • MongoDB instance
  • Mongos node
  • Primary node
  • Secondary node

1 minute

Getmore Operations per Second

Average number of the getmore statement execution times on MongoDB instances per second

Unit: Execution/s

≥ 0 executions/s

Monitored object: database

Monitored instance type:

  • MongoDB instance
  • Mongos node
  • Primary node
  • Secondary node

1 minute

Number of Chunks of Shard 1

Number of chunks in shard 1

Unit: Count

0-64 counts

Monitored object: database

Monitored instance type: MongoDB instance

1 minute

Number of Chunks of Shard 2

Number of chunks in shard 2

Unit: Count

0-64 counts

Monitored object: database

Monitored instance type: MongoDB instance

1 minute

Number of Chunks of Shard 3

Number of chunks in shard 3

Unit: Count

0-64 counts

Monitored object: database

Monitored instance type: MongoDB instance

1 minute

Number of Chunks of Shard 4

Number of chunks in shard 4

Unit: Count

0-64 counts

Monitored object: database

Monitored instance type: MongoDB instance

1 minute

Number of Chunks of Shard 5

Number of chunks in shard 5

Unit: Count

0-64 counts

Monitored object: database

Monitored instance type: MongoDB instance

1 minute

Number of Chunks of Shard 6

Number of chunks in shard 6

Unit: Count

0-64 counts

Monitored object: database

Monitored instance type: MongoDB instance

1 minute

Number of Chunks of Shard 7

Number of chunks in shard 7

Unit: Count

0-64 counts

Monitored object: database

Monitored instance type: MongoDB instance

1 minute

Number of Chunks of Shard 8

Number of chunks in shard 8

Unit: Count

0-64 counts

Monitored object: database

Monitored instance type: MongoDB instance

1 minute

Number of Chunks of Shard 9

Number of chunks in shard 9

Unit: Count

0-64 counts

Monitored object: database

Monitored instance type: MongoDB instance

1 minute

Number of Chunks of Shard 10

Number of chunks in shard 10

Unit: Count

0-64 counts

Monitored object: database

Monitored instance type: MongoDB instance

1 minute

Number of Chunks of Shard 11

Number of chunks in shard 11

Unit: Count

0-64 counts

Monitored object: database

Monitored instance type: MongoDB instance

1 minute

Number of Chunks of Shard 12

Number of chunks in shard 12

Unit: Count

0-64 counts

Monitored object: database

Monitored instance type: MongoDB instance

1 minute

Current DB Instance Active Connections

Total number of connections attempting to connect to MongoDB instances

Unit: Count

0-200 counts

Monitored object: database

Monitored instance type: MongoDB instance

1 minute

Chunk Migration Failures in Last 24 hrs

Number of chunk migration failures for the last 24 hours

Unit: Count

≥ 0 counts

Monitored object: database

Monitored instance type: MongoDB instance

1 minute

Current Active Connections

Total number of connections attempting to connect to MongoDB instances

Unit: Count

0-200 counts

Monitored object: database

Monitored instance type:

  • Mongos node
  • Primary node
  • Secondary node

1 minute

Resident Memory

Size of resident memory

Unit: MB

≥ 0 MB

Monitored object: database

Monitored instance type:

  • Mongos node
  • Primary node
  • Secondary node

1 minute

Virtual Memory

Size of the virtual memory

Unit: MB

≥ 0 MB

Monitored object: database

Monitored instance type:

  • Mongos node
  • Primary node
  • Secondary node

1 minute

Regular Asserts per Second

Number of regular asserts per second

Unit: Assert/s

≥ 0 asserts/s

Monitored object: database

Monitored instance type:

  • Mongos node
  • Primary node
  • Secondary node

1 minute

Warning Asserts per Second

Number of warning asserts per second

Unit: Assert/s

≥ 0 asserts/s

Monitored object: database

Monitored instance type:

  • Mongos node
  • Primary node
  • Secondary node

1 minute

Message Asserts per Second

Number of message asserts per second

Unit: Assert/s

≥ 0 asserts/s

Monitored object: database

Monitored instance type:

  • Mongos node
  • Primary node
  • Secondary node

1 minute

User Asserts per Second

Number of user asserts per second

Unit: Assert/s

≥ 0 asserts/s

Monitored object: database

Monitored instance type:

  • Mongos node
  • Primary node
  • Secondary node

1 minute

CPU Usage

CPU usage of the monitored object

Unit: Percent

0-1

Monitored object: ECS

Monitored instance type:

  • Mongos node
  • Primary node
  • Secondary node

1 minute

Memory Usage

Memory usage of the monitored object

Unit: Percent

0-1

Monitored object: ECS

Monitored instance type:

  • Mongos node
  • Primary node
  • Secondary node

1 minute

Network Output Throughput

Rate at which all outgoing traffic passes through the network adapter

Unit: byte/s

≥ 0 bytes/s

Monitored object: ECS

Monitored instance type:

  • Mongos node
  • Primary node
  • Secondary node

1 minute

Network Input Throughput

Rate at which all incoming traffic passes through the network adapter

Unit: byte/s

≥ 0 bytes/s

Monitored object: ECS

Monitored instance type:

  • Mongos node
  • Primary node
  • Secondary node

1 minute

Number of Operations Queued Waiting for the Lock

Number of operations queued waiting for the lock

Unit: Count

≥ 0 counts

Monitored object: database

Monitored instance type:

  • Primary node
  • Secondary node

1 minute

Number of Operations Queued Waiting for the Read Lock

Number of operations queued waiting for the read lock

Unit: Count

≥ 0 counts

Monitored object: database

Monitored instance type:

  • Primary node
  • Secondary node

1 minute

Number of Operations Queued Waiting for the Write Lock

Number of operations queued waiting for the write lock

Unit: Count

≥ 0 counts

Monitored object: database

Monitored instance type:

  • Primary node
  • Secondary node

1 minute

Number of Page Faults

Number of page faults on the monitored nodes

Unit: Count

≥ 0 counts

Monitored object: database

Monitored instance type:

  • Primary node
  • Secondary node

1 minute

Number of Slow Queries

Number of slow queries on the monitored nodes

Unit: Count

≥ 0 counts

Monitored object: database

Monitored instance type:

  • Primary node
  • Secondary node

1 minute

Number of Current Maintained Cursors

Number of maintained cursors on the monitored nodes

Unit: Count

≥ 0 counts

Monitored object: database

Monitored instance type:

  • Primary node
  • Secondary node

1 minute

Number of Timed Out Cursors

Number of timed out cursors on the monitored nodes

Unit: Count

≥ 0 counts

Monitored object: database

Monitored instance type:

  • Primary node
  • Secondary node

1 minute

Bytes in Cache When Using WiredTiger

Size of data in cache when WiredTiger is used

Unit: MB

≥ 0 MB

Monitored object: database

Monitored instance type:

  • Primary node
  • Secondary node

1 minute

Tracked Dirty Bytes in Cache When Using WiredTiger

Size of dirty data in cache when WiredTiger is used

Unit: MB

≥ 0 MB

Monitored object: database

Monitored instance type:

  • Primary node
  • Secondary node

1 minute

Bytes Written into WiredTiger Cache per Second

Bytes written into WiredTiger cache per second

Unit: byte/s

≥ 0 bytes/s

Monitored object: database

Monitored instance type:

  • Primary node
  • Secondary node

1 minute

Bytes Written into Disks from WiredTiger Cache per Second

Bytes written into disks from WiredTiger cache per second

Unit: byte/s

≥ 0 bytes/s

Monitored object: database

Monitored instance type:

  • Primary node
  • Secondary node

1 minute

Oplog Available Time on Primary Node

Oplog available time on the monitored primary node

Unit: Hour

≥ 0 hours

Monitored object: database

Monitored instance type: primary node

1 minute

Oplog Generation Speed on Primary Node

Rate at which Oplog is generated on the monitored primary node

Unit: MB/hour

≥ 0 MB/hour

Monitored object: database

Monitored instance type: primary node

1 minute

Disk Utilization

Disk usage of the monitored object

Unit: Percent

0-1

Monitored object: ECS

Monitored instance type:

  • Primary node
  • Secondary node

1 minute

IOPS

Average number of I/O requests processed by the system during a specified period

Unit: Request/s

≥ 0 counts/s

Monitored object: ECS

Monitored instance type:

  • Primary node
  • Secondary node

1 minute

Disk Read Throughput

Average number of read bytes per second for disks

Unit: byte/s

≥ 0 bytes/s

Monitored object: ECS

Monitored instance type:

  • Primary node
  • Secondary node

1 minute

Disk Write Throughput

Average number of write bytes per second for disks

Unit: byte/s

≥ 0 bytes/s

Monitored object: ECS

Monitored instance type:

  • Primary node
  • Secondary node

1 minute

Average Time per Disk Read

Time required for reading 1 KB disk data

Unit: Second

≥ 0 seconds

Monitored object: ECS

Monitored instance type:

  • Primary node
  • Secondary node

1 minute

Average Time per Disk Write

Average time per disk write operation during a specified period

Unit: Second

≥ 0 seconds

Monitored object: ECS

Monitored instance type:

  • Primary node
  • Secondary node

1 minute

Average Disk Queue Length

Number of threads waiting to be written to the monitored object

Unit: Count

≥ 0 counts

Monitored object: ECS

Monitored instance type:

  • Primary node
  • Secondary node

1 minute

Total Disk Size

Total disk size of the monitored object

Unit: GB

0–1000 GB

Monitored object: ECS

Monitored instance type:

  • Primary node
  • Secondary node

1 minute

Disk Usage

Total size of the disk usage of the monitored object

Unit: GB

0–1000 GB

Monitored object: ECS

Monitored instance type:

  • Primary node
  • Secondary node

1 minute

Oplog Overlapping Time Between Primary and Secondary Nodes

Oplog overlapping time between the primary and secondary nodes

Unit: Second

≥ 0 seconds

Monitored object: database

Monitored instance type: secondary node

1 minute

Delay Between Primary and Secondary Nodes

Replication delay between the primary and secondary nodes

Unit: Second

≥ 0 seconds

Monitored object: database

Monitored instance type: secondary node

1 minute

Command Operations per Second for Secondary Node Replication

Average number of the command statement execution times for secondary node replication per second

Unit: Command/s

≥ 0

commands/s

Monitored object: database

Monitored instance type: secondary node

1 minute

Update Operations per Second for Secondary Node Replication

Average number of the update statement execution times for secondary node replication per second

Unit: Execution/s

≥ 0

executions/s

Monitored object: database

Monitored instance type: secondary node

1 minute

Delete Operations per Second for Secondary Node Replication

Average number of the delete statement execution times for secondary node replication per second

Unit: Execution/s

≥ 0

executions/s

Monitored object: database

Monitored instance type: secondary node

1 minute

Insert Operations per Second for Secondary Node Replication

Average number of the insert statement execution times for secondary node replication per second

Unit: Execution/s

≥ 0

executions/s

Monitored object: database

Monitored instance type: secondary node

1 minute