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MongoDB Fields

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MongoDB Fields

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Metrics collected from MongoDB servers.

mongodb Fields

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MongoDB metrics.

dbstats Fields

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dbstats provides an overview of a particular mongo database. This document is most concerned with data volumes of a database.

mongodb.dbstats.avg_obj_size.bytes

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type: long

format: bytes

mongodb.dbstats.collections

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type: integer

mongodb.dbstats.data_size.bytes

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type: long

format: bytes

mongodb.dbstats.db

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type: keyword

mongodb.dbstats.file_size.bytes

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type: long

format: bytes

mongodb.dbstats.index_size.bytes

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type: long

format: bytes

mongodb.dbstats.indexes

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type: long

mongodb.dbstats.num_extents

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type: long

mongodb.dbstats.objects

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type: long

mongodb.dbstats.storage_size.bytes

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type: long

format: bytes

mongodb.dbstats.ns_size_mb.mb

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type: long

mongodb.dbstats.data_file_version.major

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type: long

mongodb.dbstats.data_file_version.minor

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type: long

mongodb.dbstats.extent_free_list.num

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type: long

mongodb.dbstats.extent_free_list.size.bytes

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type: long

format: bytes

status Fields

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MongoDB server status metrics.

mongodb.status.version

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type: keyword

Instance version.

mongodb.status.uptime.ms

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type: long

Instance uptime in milliseconds.

mongodb.status.local_time

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type: date

Local time as reported by the MongoDB instance.

mongodb.status.asserts.regular

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type: long

Number of regular assertions produced by the server.

mongodb.status.asserts.warning

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type: long

Number of warning assertions produced by the server.

mongodb.status.asserts.msg

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type: long

Number of msg assertions produced by the server.

mongodb.status.asserts.user

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type: long

Number of user assertions produced by the server.

mongodb.status.asserts.rollovers

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type: long

Number of rollovers assertions produced by the server.

background_flushing Fields

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Data about the process MongoDB uses to write data to disk. This data is only available for instances that use the MMAPv1 storage engine.

mongodb.status.background_flushing.flushes

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type: long

A counter that collects the number of times the database has flushed all writes to disk.

mongodb.status.background_flushing.total.ms

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type: long

The total number of milliseconds (ms) that the mongod processes have spent writing (i.e. flushing) data to disk. Because this is an absolute value, consider the value of flushes and average_ms to provide better context for this datum.

mongodb.status.background_flushing.average.ms

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type: long

The average time spent flushing to disk per flush event.

mongodb.status.background_flushing.last.ms

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type: long

The amount of time, in milliseconds, that the last flush operation took to complete.

mongodb.status.background_flushing.last_finished

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type: date

A timestamp of the last completed flush operation.

connections Fields

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Data regarding the current status of incoming connections and availability of the database server.

mongodb.status.connections.current

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type: long

The number of connections to the database server from clients. This number includes the current shell session. Consider the value of available to add more context to this datum.

mongodb.status.connections.available

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type: long

The number of unused available incoming connections the database can provide.

mongodb.status.connections.total_created

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type: long

A count of all incoming connections created to the server. This number includes connections that have since closed.

journaling Fields

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Data about the journaling-related operations and performance. Journaling information only appears for mongod instances that use the MMAPv1 storage engine and have journaling enabled.

mongodb.status.journaling.commits

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type: long

The number of transactions written to the journal during the last journal group commit interval.

mongodb.status.journaling.journaled.mb

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type: long

The amount of data in megabytes (MB) written to journal during the last journal group commit interval.

mongodb.status.journaling.write_to_data_files.mb

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type: long

The amount of data in megabytes (MB) written from journal to the data files during the last journal group commit interval.

mongodb.status.journaling.compression

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type: long

The compression ratio of the data written to the journal.

mongodb.status.journaling.commits_in_write_lock

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type: long

Count of the commits that occurred while a write lock was held. Commits in a write lock indicate a MongoDB node under a heavy write load and call for further diagnosis.

mongodb.status.journaling.early_commits

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type: long

The number of times MongoDB requested a commit before the scheduled journal group commit interval.

times Fields

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Information about the performance of the mongod instance during the various phases of journaling in the last journal group commit interval.

mongodb.status.journaling.times.dt.ms

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type: long

The amount of time over which MongoDB collected the times data. Use this field to provide context to the other times field values.

mongodb.status.journaling.times.prep_log_buffer.ms

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type: long

The amount of time spent preparing to write to the journal. Smaller values indicate better journal performance.

mongodb.status.journaling.times.write_to_journal.ms

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type: long

The amount of time spent actually writing to the journal. File system speeds and device interfaces can affect performance.

mongodb.status.journaling.times.write_to_data_files.ms

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type: long

The amount of time spent writing to data files after journaling. File system speeds and device interfaces can affect performance.

mongodb.status.journaling.times.remap_private_view.ms

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type: long

The amount of time spent remapping copy-on-write memory mapped views. Smaller values indicate better journal performance.

mongodb.status.journaling.times.commits.ms

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type: long

The amount of time spent for commits.

mongodb.status.journaling.times.commits_in_write_lock.ms

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type: long

The amount of time spent for commits that occurred while a write lock was held.

extra_info Fields

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Platform specific data.

mongodb.status.extra_info.heap_usage.bytes

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type: long

format: bytes

The total size in bytes of heap space used by the database process. Only available on Unix/Linux.

mongodb.status.extra_info.page_faults

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type: long

The total number of page faults that require disk operations. Page faults refer to operations that require the database server to access data that isn’t available in active memory.

network Fields

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Platform specific data.

mongodb.status.network.in.bytes

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type: long

format: bytes

The amount of network traffic, in bytes, received by this database.

mongodb.status.network.out.bytes

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type: long

format: bytes

The amount of network traffic, in bytes, sent from this database.

mongodb.status.network.requests

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type: long

The total number of requests received by the server.

opcounters Fields

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An overview of database operations by type.

mongodb.status.opcounters.insert

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type: long

The total number of insert operations received since the mongod instance last started.

mongodb.status.opcounters.query

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type: long

The total number of queries received since the mongod instance last started.

mongodb.status.opcounters.update

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type: long

The total number of update operations received since the mongod instance last started.

mongodb.status.opcounters.delete

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type: long

The total number of delete operations received since the mongod instance last started.

mongodb.status.opcounters.getmore

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type: long

The total number of getmore operations received since the mongod instance last started.

mongodb.status.opcounters.command

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type: long

The total number of commands issued to the database since the mongod instance last started.

opcounters_replicated Fields

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An overview of database replication operations by type.

mongodb.status.opcounters_replicated.insert

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type: long

The total number of replicated insert operations received since the mongod instance last started.

mongodb.status.opcounters_replicated.query

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type: long

The total number of replicated queries received since the mongod instance last started.

mongodb.status.opcounters_replicated.update

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type: long

The total number of replicated update operations received since the mongod instance last started.

mongodb.status.opcounters_replicated.delete

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type: long

The total number of replicated delete operations received since the mongod instance last started.

mongodb.status.opcounters_replicated.getmore

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type: long

The total number of replicated getmore operations received since the mongod instance last started.

mongodb.status.opcounters_replicated.command

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type: long

The total number of replicated commands issued to the database since the mongod instance last started.

memory Fields

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Data about the current memory usage of the mongod server.

mongodb.status.memory.bits

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type: long

Either 64 or 32, depending on which target architecture was specified during the mongod compilation process.

mongodb.status.memory.resident.mb

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type: long

The amount of RAM, in megabytes (MB), currently used by the database process.

mongodb.status.memory.virtual.mb

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type: long

The amount, in megabytes (MB), of virtual memory used by the mongod process.

mongodb.status.memory.mapped.mb

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type: long

The amount of mapped memory, in megabytes (MB), used by the database. Because MongoDB uses memory-mapped files, this value is likely to be to be roughly equivalent to the total size of your database or databases.