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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.

collstats fields

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MongoDB collection statistics metrics.

mongodb.collstats.db

type: keyword

Database name.

mongodb.collstats.collection

type: keyword

Collection name.

mongodb.collstats.name

type: keyword

Combination of database and collection name.

mongodb.collstats.total.time.us

type: long

Total waiting time for locks in microseconds.

mongodb.collstats.total.count

type: long

Total number of lock wait events.

mongodb.collstats.lock.read.time.us

type: long

Time waiting for read locks in microseconds.

mongodb.collstats.lock.read.count

type: long

Number of read lock wait events.

mongodb.collstats.lock.write.time.us

type: long

Time waiting for write locks in microseconds.

mongodb.collstats.lock.write.count

type: long

Number of write lock wait events.

mongodb.collstats.queries.time.us

type: long

Time running queries in microseconds.

mongodb.collstats.queries.count

type: long

Number of queries executed.

mongodb.collstats.getmore.time.us

type: long

Time asking for more cursor rows in microseconds.

mongodb.collstats.getmore.count

type: long

Number of times a cursor asked for more data.

mongodb.collstats.insert.time.us

type: long

Time inserting new documents in microseconds.

mongodb.collstats.insert.count

type: long

Number of document insert events.

mongodb.collstats.update.time.us

type: long

Time updating documents in microseconds.

mongodb.collstats.update.count

type: long

Number of document update events.

mongodb.collstats.remove.time.us

type: long

Time deleting documents in microseconds.

mongodb.collstats.remove.count

type: long

Number of document delete events.

mongodb.collstats.commands.time.us

type: long

Time executing database commands in microseconds.

mongodb.collstats.commands.count

type: long

Number of database commands executed.

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

type: long

format: bytes

mongodb.dbstats.collections

type: integer

mongodb.dbstats.data_size.bytes

type: long

format: bytes

mongodb.dbstats.db

type: keyword

mongodb.dbstats.file_size.bytes

type: long

format: bytes

mongodb.dbstats.index_size.bytes

type: long

format: bytes

mongodb.dbstats.indexes

type: long

mongodb.dbstats.num_extents

type: long

mongodb.dbstats.objects

type: long

mongodb.dbstats.storage_size.bytes

type: long

format: bytes

mongodb.dbstats.ns_size_mb.mb

type: long

mongodb.dbstats.data_file_version.major

type: long

mongodb.dbstats.data_file_version.minor

type: long

mongodb.dbstats.extent_free_list.num

type: long

mongodb.dbstats.extent_free_list.size.bytes

type: long

format: bytes

status fields

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MongoDB server status metrics.

mongodb.status.version

type: keyword

Instance version.

mongodb.status.uptime.ms

type: long

Instance uptime in milliseconds.

mongodb.status.local_time

type: date

Local time as reported by the MongoDB instance.

mongodb.status.asserts.regular

type: long

Number of regular assertions produced by the server.

mongodb.status.asserts.warning

type: long

Number of warning assertions produced by the server.

mongodb.status.asserts.msg

type: long

Number of msg assertions produced by the server.

mongodb.status.asserts.user

type: long

Number of user assertions produced by the server.

mongodb.status.asserts.rollovers

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

type: long

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

mongodb.status.background_flushing.total.ms

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

type: long

The average time spent flushing to disk per flush event.

mongodb.status.background_flushing.last.ms

type: long

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

mongodb.status.background_flushing.last_finished

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

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

type: long

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

mongodb.status.connections.total_created

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

type: long

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

mongodb.status.journaling.journaled.mb

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

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

type: long

The compression ratio of the data written to the journal.

mongodb.status.journaling.commits_in_write_lock

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

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

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

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

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

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

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

type: long

The amount of time spent for commits.

mongodb.status.journaling.times.commits_in_write_lock.ms

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

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

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

type: long

format: bytes

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

mongodb.status.network.out.bytes

type: long

format: bytes

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

mongodb.status.network.requests

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

type: long

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

mongodb.status.opcounters.query

type: long

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

mongodb.status.opcounters.update

type: long

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

mongodb.status.opcounters.delete

type: long

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

mongodb.status.opcounters.getmore

type: long

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

mongodb.status.opcounters.command

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

type: long

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

mongodb.status.opcounters_replicated.query

type: long

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

mongodb.status.opcounters_replicated.update

type: long

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

mongodb.status.opcounters_replicated.delete

type: long

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

mongodb.status.opcounters_replicated.getmore

type: long

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

mongodb.status.opcounters_replicated.command

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

type: long

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

mongodb.status.memory.resident.mb

type: long

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

mongodb.status.memory.virtual.mb

type: long

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

mongodb.status.memory.mapped.mb

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.

mongodb.status.memory.mapped_with_journal.mb

type: long

The amount of mapped memory, in megabytes (MB), including the memory used for journaling.

mongodb.status.write_backs_queued

type: boolean

True when there are operations from a mongos instance queued for retrying.

mongodb.status.storage_engine.name

type: keyword

A string that represents the name of the current storage engine.

wired_tiger fields

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Statistics about the WiredTiger storage engine.

concurrent_transactions fields

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Statistics about the transactions currently in progress.

mongodb.status.wired_tiger.concurrent_transactions.write.out

type: long

Number of concurrent write transaction in progress.

mongodb.status.wired_tiger.concurrent_transactions.write.available

type: long

Number of concurrent write tickets available.

mongodb.status.wired_tiger.concurrent_transactions.write.total_tickets

type: long

Number of total write tickets.

mongodb.status.wired_tiger.concurrent_transactions.read.out

type: long

Number of concurrent read transaction in progress.

mongodb.status.wired_tiger.concurrent_transactions.read.available

type: long

Number of concurrent read tickets available.

mongodb.status.wired_tiger.concurrent_transactions.read.total_tickets

type: long

Number of total read tickets.

cache fields

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Statistics about the cache and page evictions from the cache.

mongodb.status.wired_tiger.cache.maximum.bytes

type: long

format: bytes

Maximum cache size.

mongodb.status.wired_tiger.cache.used.bytes

type: long

format: bytes

Size in byte of the data currently in cache.

mongodb.status.wired_tiger.cache.dirty.bytes

type: long

format: bytes

Size in bytes of the dirty data in the cache.

mongodb.status.wired_tiger.cache.pages.read

type: long

Number of pages read into the cache.

mongodb.status.wired_tiger.cache.pages.write

type: long

Number of pages written from the cache.

mongodb.status.wired_tiger.cache.pages.evicted

type: long

Number of pages evicted from the cache.

log fields

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Statistics about the write ahead log used by WiredTiger.

mongodb.status.wired_tiger.log.size.bytes

type: long

format: bytes

Total log size in bytes.

mongodb.status.wired_tiger.log.write.bytes

type: long

format: bytes

Number of bytes written into the log.

mongodb.status.wired_tiger.log.max_file_size.bytes

type: long

format: bytes

Maximum file size.

mongodb.status.wired_tiger.log.flushes

type: long

Number of flush operations.

mongodb.status.wired_tiger.log.writes

type: long

Number of write operations.

mongodb.status.wired_tiger.log.scans

type: long

Number of scan operations.

mongodb.status.wired_tiger.log.syncs

type: long

Number of sync operations.

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