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Yandex Managed Service for MongoDB
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  • Terraform reference
  • Monitoring metrics
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In this article:

  • CPU metrics
  • Disk metrics
  • Disk I/O metrics
  • RAM metrics
  • Network metrics
  • dbStats metrics
  • Service metrics
  • Other metrics

Yandex Monitoring metric reference

Written by
Yandex Cloud
Updated at April 28, 2025
  • CPU metrics
  • Disk metrics
  • Disk I/O metrics
  • RAM metrics
  • Network metrics
  • dbStats metrics
  • Service metrics
  • Other metrics

This section describes Managed Service for MongoDB metrics delivered to Monitoring.

The name label stores the metric name.

Labels shared by all Managed Service for MongoDB metrics:

Label Value
service Service ID: managed-mongodb
resource_type Resource type: cluster
resource_id Cluster ID
host Host FQDN
node Host type: primary or secondary
shard Shard ID

CPU metricsCPU metrics

These metrics show processor core workload.

Name
Type, units
Description
cpu.fraction
DGAUGE, %
Guaranteed vCPU performance
cpu.guarantee
DGAUGE, count
Guaranteed number of cores
cpu.guest_nice
DGAUGE, %
CPU core usage, guest_nice usage type
cpu.limit
DGAUGE, count
Maximum number of cores in use
cpu.guest
DGAUGE, %
CPU core usage, guest usage type
cpu.idle
DGAUGE, %
CPU core usage, idle usage type
cpu.iowait
DGAUGE, %
CPU core usage, iowait usage type
cpu.irq
DGAUGE, %
CPU core usage, irq usage type
cpu.nice
DGAUGE, %
CPU core usage, nice usage type
cpu.softirq
DGAUGE, %
CPU core usage, softirq usage type
cpu.steal
DGAUGE, %
CPU core usage, steal usage type
cpu.system
DGAUGE, %
CPU core usage, system usage type
cpu.user
DGAUGE, %
CPU core usage, user usage type
cpu_utilization_by_db_15
DGAUGE, %
Average VM processor core (vCPU) utilization by a database over 15 seconds (%). It ranges from 0% to the vCPU performance level.
cpu_utilization_by_db_15_limit
DGAUGE, %
Maximum VM processor core (vCPU) utilization by a database over 15 seconds (%)
cpu_utilization_by_db_60
DGAUGE, %
Average VM processor core (vCPU) utilization by a database over 60 seconds (%)
cpu_utilization_by_db_60_limit
DGAUGE, %
Maximum VM processor core (vCPU) utilization by a database over 60 seconds (%)

Disk metricsDisk metrics

Name
Type, units
Description
disk.free_bytes
DGAUGE, bytes
Free space
disk.free_inodes
DGAUGE, count
Free inodes
disk.total_bytes
DGAUGE, bytes
Available space
disk.total_inodes
DGAUGE, count
Available inodes
disk.used_bytes
DGAUGE, bytes
Used space
disk.used_inodes
DGAUGE, count
Used inodes
load.avg_15min
DGAUGE, %
Average load over 15 minutes
load.avg_1min
DGAUGE, %
Average load over one minute
load.avg_5min
DGAUGE, %
Average load over five minutes

Disk I/O metricsDisk I/O metrics

Name
Type, units
Description
io.disk*.iops_in_progress
DGAUGE, count
Number of disk I/O operations in progress
io.disk*.merged_reads
DGAUGE, count
Number of merged read operations for a given disk
io.disk*.merged_writes
DGAUGE, count
Number of merged writes for a given disk
io.disk*.read_bytes
DGAUGE, bytes per second
Read speed for a given disk
io.disk*.read_count
DGAUGE, operations per second
Number of reads per second for a given disk
io.disk*.read_time
DGAUGE, milliseconds
Average read time for a given disk
io.disk*.utilization
DGAUGE, %
Utilization of a given disk; disabled for network drives.
io.disk*.weighted_io_time
DGAUGE, milliseconds
I/O wait time for a given disk
io.disk*.write_bytes
DGAUGE, bytes per second
Write speed for a given disk
io.disk*.write_count
DGAUGE, operations per second
Number of writes per second for a given disk
io.disk*.write_time
DGAUGE, milliseconds
Average write time for a given disk

RAM metricsRAM metrics

Name
Type, units
Description
mem.active_bytes
DGAUGE, bytes
Active resident memory (frequently accessed and released when absolutely necessary)
mem.available_bytes
DGAUGE, bytes
RAM usage, available usage type
mem.available_percent_bytes
DGAUGE, %
Percentage of RAM usage, available usage type
mem.buffers_bytes
DGAUGE, bytes
RAM usage, buffers usage type
mem.cached_bytes
DGAUGE, bytes
RAM usage, cached usage type
mem.commit_limit_bytes
DGAUGE, bytes
RAM usage, commit_limit usage type
mem.committed_as_bytes
DGAUGE, bytes
RAM usage, committed_as usage type
mem.dirty_bytes
DGAUGE, bytes
RAM usage, dirty usage type
mem.free_bytes
DGAUGE, bytes
Amount of free RAM available, excluding mem.buffers_bytes and mem.cached_bytes
mem.high_free_bytes
DGAUGE, bytes
RAM usage, high_free usage type
mem.high_total_bytes
DGAUGE, bytes
RAM usage, high_total usage type
mem.huge_page_size_bytes
DGAUGE, bytes
RAM usage, huge_page_size usage type
mem.huge_pages_free_bytes
DGAUGE, bytes
RAM usage, huge_pages_free usage type
mem.huge_pages_total_bytes
DGAUGE, bytes
RAM usage, huge_pages_total usage type
mem.inactive_bytes
DGAUGE, bytes
RAM usage, inactive usage type
mem.low_free_bytes
DGAUGE, bytes
RAM usage, low_free usage type
mem.low_total_bytes
DGAUGE, bytes
RAM usage, low_total usage type
mem.mapped_bytes
DGAUGE, bytes
RAM usage, mapped usage type
mem.page_tables_bytes
DGAUGE, bytes
RAM usage, page_tables usage type
mem.slab_bytes
DGAUGE, bytes
RAM usage, slab usage type
mem.sreclaimable_bytes
DGAUGE, bytes
RAM usage, sreclaimable usage type
mem.sunreclaim_bytes
DGAUGE, bytes
RAM usage, sunreclaim usage type
mem.swap_cached_bytes
DGAUGE, bytes
RAM usage, swap_cached usage type
mem.swap_free_bytes
DGAUGE, bytes
RAM usage, swap_free usage type
mem.swap_total_bytes
DGAUGE, bytes
RAM usage, swap_total usage type
mem.shared_bytes
DGAUGE, bytes
RAM usage, shared usage type
mem.total_bytes
DGAUGE, bytes
RAM usage, total usage type
mem.used_bytes
DGAUGE, bytes
Amount of RAM currently used by running processes
mem.used_percent_bytes
DGAUGE, %
Percentage of used RAM
mem.vmalloc_chunk_bytes
DGAUGE, bytes
RAM usage, vmalloc_chunk usage type
mem.vmalloc_total_bytes
DGAUGE, bytes
RAM usage, vmalloc_total usage type
mem.vmalloc_used_bytes
DGAUGE, bytes
RAM usage, vmalloc_used usage type
mem.write_back_bytes
DGAUGE, bytes
RAM usage, write_back usage type
mem.write_back_tmp_bytes
DGAUGE, bytes
RAM usage, write_back_tmp usage type

Network metricsNetwork metrics

Name
Type, units
Description
net.bytes_recv
DGAUGE, bytes per second
Network data receive rate
net.bytes_sent
DGAUGE, bytes per second
Network data transmit rate
net.drop_in
DGAUGE, count
Dropped receive packets
net.drop_out
DGAUGE, count
Dropped transmit packets
net.err_in
DGAUGE, count
Receive error count
net.err_out
DGAUGE, count
Transmit error count
net.packets_recv
DGAUGE, packets per second
Network packet receive rate
net.packets_sent
DGAUGE, packets per second
Network packet transmit rate

dbStats metricsdbStats metrics

Name
Type, units
Description
db_stats_dataSize
DGAUGE, bytes
Size of uncompressed data in a DB
db_stats_indexSize
DGAUGE, bytes
Space used by DB indexes
db_stats_config_dataSize
DGAUGE, bytes
Size of uncompressed data in a configuration DB
db_stats_config_indexSize
DGAUGE, bytes
Space used by configuration DB indexes
db_stats_local_dataSize
DGAUGE, bytes
Size of uncompressed data in a local DB
db_stats_local_indexSize
DGAUGE, bytes
Space used by local DB indexes
db_stats_mdb_internal_dataSize
DGAUGE, bytes
Size of uncompressed data of in an internal DB
db_stats_mdb_internal_indexSize
DGAUGE, bytes
Space used by internal DB indexes

Service metricsService metrics

Name
Type, units
Description
active
DGAUGE, count
Active resident memory (frequently accessed and released when absolutely necessary)
available
DGAUGE, count
RAM usage, available usage type
available_percent
DGAUGE, %
Percentage of RAM usage, available usage type
buffered
DGAUGE, bytes
RAM usage, buffered usage type
bytes_recv
DGAUGE, bytes
Size of data received
bytes_sent
DGAUGE, bytes
Size of data sent
cached
DGAUGE, bytes
RAM usage, cached usage type
commit_limit
DGAUGE, bytes
RAM usage, commit_limit usage type
committed_as
DGAUGE, bytes
RAM usage, committed_as usage type
dirty
DGAUGE, bytes
RAM usage, dirty usage type
drop_in
DGAUGE, count
Dropped receive packets
drop_out
DGAUGE, count
Dropped transmit packets
err_in
DGAUGE, count
Receive error count
err_out
DGAUGE, count
Transmit error count
free
DGAUGE, bytes
RAM usage, free usage type
high_free
DGAUGE, bytes
RAM usage, high_free usage type
high_total
DGAUGE, bytes
RAM usage, high_total usage type
huge_page_size
DGAUGE, bytes
RAM usage, huge_page_size usage type
huge_pages_free
DGAUGE, bytes
RAM usage, huge_pages_free usage type
huge_pages_total
DGAUGE, bytes
RAM usage, huge_pages_total usage type
icmp_inaddrmasks
DGAUGE, count
Number of ICMP address mask request messages received
icmp_incsumerrors
DGAUGE, count
Total IP packets with checksum errors
icmp_indestunreachs
DGAUGE, count
Number of ICMP destination unreachable messages received
icmp_inechoreps
DGAUGE, count
Number of ICMP echo reply messages received
icmp_inechos
DGAUGE, count
Number of ICMP echo request messages received
icmp_inerrors
DGAUGE, count
Number of bad ICMP packets received, excluding those with checksum errors
icmp_inmsgs
DGAUGE, count
Total ICMP messages received
icmp_inparmprobs
DGAUGE, count
Number of ICMP parameter problem messages received
icmp_inredirects
DGAUGE, count
Number of ICMP redirect messages received
icmp_insrcquenchs
DGAUGE, count
Number of ICMP parameter problem messages received
icmp_intimeexcds
DGAUGE, count
Number of ICMP time exceeded messages received
icmp_intimestampreps
DGAUGE, count
Number of ICMP timestamp reply messages received
icmp_intimestamps
DGAUGE, count
Number of ICMP timestamp (request) messages received
icmp_outaddrmaskreps
DGAUGE, count
Number of ICMP address mask reply messages sent
icmp_outaddrmasks
DGAUGE, count
Number of ICMP address mask request messages sent
icmp_outdestunreachs
DGAUGE, count
Number of ICMP destination unreachable messages sent
icmp_outechoreps
DGAUGE, count
Number of ICMP echo reply messages sent
icmp_outechos
DGAUGE, count
Number of ICMP echo request messages sent
icmp_outerrors
DGAUGE, count
Number of ICMP messages not sent due to ICMP errors, such as buffer shortages
icmp_outmsgs
DGAUGE, count
Total ICMP messages the object in question attempted to send. This includes all messages counted by icmp_outerrors.
icmp_outparmprobs
DGAUGE, count
Number of ICMP parameter problem messages sent
icmp_outredirects
DGAUGE, count
Number of ICMP redirect messages sent
icmp_outsrcquenchs
DGAUGE, count
Number of ICMP source quench messages sent
icmp_outtimeexcds
DGAUGE, count
Number of ICMP time exceeded messages sent
icmp_outtimestampreps
DGAUGE, count
Number of ICMP timestamp reply messages sent
icmp_outtimestamps
DGAUGE, count
Number of ICMP timestamp (request) messages sent
inactive
DGAUGE, bytes
RAM usage, inactive usage type
inodes_free
DGAUGE, count
Free inodes
inodes_total
DGAUGE, count
Available inodes
inodes_used
DGAUGE, count
Used inodes
instance_userfault_broken
DGAUGE, count
Number of memory operation errors
iops_in_progress
DGAUGE, count
Number of disk I/O operations in progress
ip_defaultttl
DGAUGE, string
Default TTL value inserted into the IP header for IP packets generated in this object when the transport layer protocol does not provide a TTL.
ip_forwarding
DGAUGE
IP forwarding status (SNMP): 0 for disabled, 1 for enabled.
ip_forwdatagrams
DGAUGE, count
Number of inbound packets not destined for this object, triggering an attempt to find a forwarding route to the final IP destination. For objects not acting as IP gateways, this count includes only those packets that were source-routed through them and where the source route option was successfully processed.
ip_fragcreates
DGAUGE, count
Number of IP packet fragments generated due to fragmentation in the object in question
ip_fragfails
DGAUGE, count
Number of IP packets dropped due to failed fragmentation which was required in this object, e.g., because of the Do not fragment flag being set.
ip_fragoks
DGAUGE, count
Number of successfully fragmented IP packets
ip_inaddrerrors
DGAUGE, count
Number of inbound packets dropped due to an invalid destination IP address in the IP header for the object in question. This count includes invalid addresses, such as 0.0.0.0, and addresses of unsupported classes, e.g., Class E. For objects that do not act as IP gateways and therefore do not forward packets, this counter includes packets dropped because the destination address was not a local one.
ip_indelivers
DGAUGE, count
Total IP packets delivered
ip_indiscards
DGAUGE, count
Number of inbound IP packets encountering no issues preventing their further processing but still dropped, e.g., due to lack of buffer space. This counter does not include packets dropped while awaiting reassembly.
ip_inhdrerrors
DGAUGE, count
Number of inbound packets with header errors
ip_inreceives
DGAUGE, count
Total inbound packets received from interfaces, including those received in error
ip_inunknownprotos
DGAUGE, count
Number of unknown protocol packets received
ip_outdiscards
DGAUGE, count
Number of outgoing IP packets encountering no issues preventing their transmission to the destination but still dropped, e.g., due to lack of buffer space. Note that the counter would include packets counted in ip_forwdatagrams if they met this (discretionary) drop criterion.
ip_outnoroutes
DGAUGE, count
Number of IP packets dropped because no route to their destination was found. This metric tracks all packets counted in ip_forwdatagrams that meet this no-route criterion. This includes any packets a host cannot redirect because all its default gateways are down.
ip_outrequests
DGAUGE, count
Total IP packets provided by local IP user-level protocols (including ICMP) to IP in requests for transmission. This metric does not include the packets counted in ip_forwdatagrams.
ip_reasmfails
DGAUGE, count
Number of failures detected by the IP reassembly algorithm due to reasons, such as timeouts, errors, etc. This is not necessarily a count of dropped IP fragments, since certain algorithms, like the one in RFC 815, may lose count of fragments while reassembling them as they are received.
ip_reasmoks
DGAUGE, count
Number of IP packets successfully reassembled
ip_reasmreqds
DGAUGE, count
Number of received IP fragments requiring reassembly in the object in question
ip_reasmtimeout
DGAUGE, seconds
Maximum time, in seconds, received fragments are kept while awaiting reassembly in the object in question.
low_free
DGAUGE, bytes
RAM usage, low_free usage type
low_total
DGAUGE, bytes
RAM usage, low_total usage type
mapped
DGAUGE, bytes
RAM usage, mapped usage type
memory_utilization_by_db_percent
DGAUGE, %
Memory utilization by a database
memory_utilization_by_db_percent_limit
DGAUGE, %
Limit on memory utilization by a database
memory_utilization_by_db_rss
DGAUGE, bytes
Total memory used by database processes
merged_reads
DGAUGE, count
Number of merged disk reads
merged_writes
DGAUGE, count
Number of merged disk writes
mongod-is_alive
DGAUGE
Host health indicator.
It can be either 1 if a DB host is healthy or 0 if it is not.
n_cpus
DGAUGE, count
Maximum number of cores in use
n_users
DGAUGE, count
Limit on the number of users
packets_recv
DGAUGE, packets per second
Network packet receive rate
packets_sent
DGAUGE, packets per second
Network packet transmit rate
page_tables
DGAUGE, bytes
RAM usage, page_tables usage type
read_bytes
DGAUGE, bytes per second
Read speed for a given disk
read_count
DGAUGE, operations per second
Number of reads per second for a given disk
read_time
DGAUGE, milliseconds
Average disk read time
shared
DGAUGE, bytes
RAM usage, shared usage type
slab
DGAUGE, bytes
RAM usage, slab usage type
sreclaimable
DGAUGE, bytes
RAM usage, sreclaimable usage type
sunreclaim
DGAUGE, bytes
RAM usage, sunreclaim usage type
swap_cached
DGAUGE, bytes
RAM usage, swap_cached usage type
swap_free
DGAUGE, bytes
RAM usage, swap_free usage type
swap_total
DGAUGE, bytes
RAM usage, swap_total usage type
tcp_activeopens
DGAUGE, count
Number of times TCP connections have made a direct transition from the CLOSED state to SYN-SENT.
tcp_attemptfails
DGAUGE, count
Number of times TCP connections have made a direct transition to the CLOSED state from either the SYN-SENT or SYN-RCVD state, plus the number of direct TCP connection transitions.
tcp_currestab
DGAUGE, count
Current number of TCP connections for the ESTABLISHED or CLOSE WAIT state
tcp_estabresets
DGAUGE, count
Number of times TCP connections have made a direct transition to the CLOSED state from either the ESTABLISHED or CLOSE-WAIT state.
tcp_incsumerrors
DGAUGE, count
This value increases when a received TCP packet has an invalid checksum.
tcp_inerrs
DGAUGE, count
Total segments received with an error, such as invalid TCP checksums
tcp_insegs
DGAUGE, count
Total segments received, including those received in error
tcp_maxconn
DGAUGE, count
Maximum allowed number of TCP connections
tcp_outrsts
DGAUGE, count
Number of TCP segments sent with the RST flag
tcp_outsegs
DGAUGE, count
Total TCP segments sent
tcp_passiveopens
DGAUGE, count
Number of times TCP connections have made a direct transition to the SYN-RCVD state from LISTEN
tcp_retranssegs
DGAUGE, count
Total segments retransmitted, i.e., number of TCP segments sent containing one or more previously transmitted octets.
tcp_rtoalgorithm
DGAUGE
Algorithm used to determine the timeout for retransmitting unacknowledged octets
tcp_rtomax
DGAUGE, milliseconds
Maximum TCP retransmission timeout, in milliseconds
tcp_rtomin
DGAUGE, milliseconds
Minimum TCP retransmission timeout, in milliseconds
total
DGAUGE, bytes
RAM usage, total usage type
udp_ignoredmulti
DGAUGE, count
Number of UDP multicast packets ignored
udp_incsumerrors
DGAUGE, count
This value increases when a received UDP packet contains an invalid kernel code checksum.
udp_indatagrams
DGAUGE, count
Total UDP packets received
udp_inerrors
DGAUGE, count
Number of bad UDP packets received, excluding those with checksum errors
udp_noports
DGAUGE, count
Total UDP packets received with no application on the destination port
udp_outdatagrams
DGAUGE, count
Total UDP packets sent from the object in question
udp_rcvbuferrors
DGAUGE, count
Number of UDP receive buffer errors
udp_sndbuferrors
DGAUGE, count
Number of UDP send buffer errors
udplite_ignoredmulti
DGAUGE, count
Number of UDP-Lite multicast packets ignored
udplite_incsumerrors
DGAUGE, count
This value increases when a received UDP-Lite packet contains an invalid kernel code checksum.
udplite_indatagrams
DGAUGE, count
Total UDP-Lite packets received
udplite_inerrors
DGAUGE, count
Total UDP-Lite packet receive errors
udplite_noports
DGAUGE, count
Total UDP-Lite packets received without a listener on the destination port. Irregularities in this counter may occur when reinitializing the management system and at other times, as indicated by the udplite_statsdiscontinuitytime value.
udplite_outdatagrams
DGAUGE, count
Total UDP-Lite packets sent
udplite_rcvbuferrors
DGAUGE, count
Number of UDP-Lite receive buffer errors
udplite_sndbuferrors
DGAUGE, count
This value increases when no memory can be allocated to send an inbound UDP-Lite packet.
uptime
DGAUGE, %
Uptime percentage
usage_guest
DGAUGE, %
CPU core usage, guest usage type
usage_guest_nice
DGAUGE, %
CPU core usage, guest_nice usage type
usage_idle
DGAUGE, %
CPU core usage, idle usage type
usage_iowait
DGAUGE, %
CPU core usage, iowait usage type
usage_irq
DGAUGE, %
CPU core usage, irq usage type
usage_nice
DGAUGE, %
CPU core usage, nice usage type
usage_softirq
DGAUGE, %
CPU core usage, softirq usage type
usage_steal
DGAUGE, %
CPU core usage, steal usage type
usage_system
DGAUGE, %
CPU core usage, system usage type
usage_user
DGAUGE, %
CPU core usage, user usage type
used
DGAUGE, bytes
RAM usage, used usage type
used_percent
DGAUGE, %
Percentage of RAM usage, used usage type
utilization
DGAUGE, %
Average VM processor core (vCPU) utilization by a database
vmalloc_chunk
DGAUGE, bytes
RAM usage, vmalloc_chunk usage type
vmalloc_total
DGAUGE, bytes
RAM usage, vmalloc_total usage type
vmalloc_used
DGAUGE, bytes
RAM usage, vmalloc_used usage type
weighted_io_time
DGAUGE, milliseconds
I/O wait time
write_back
DGAUGE, bytes
RAM usage, write_back usage type
write_back_tmp
DGAUGE, bytes
RAM usage, write_back_tmp usage type
write_bytes
DGAUGE, bytes per second
Disk write speed
write_count
DGAUGE, operations per second
Number of writes per second
write_time
DGAUGE, milliseconds
Average disk write time

serverStatus metricsserverStatus metrics

Name
Type, units
Description
server_status_admin_asserts.msg_rate
DGAUGE, count
Message assert trigger increment, per second
server_status_admin_asserts.regular_rate
DGAUGE, count
Regular assert trigger increment, per second
server_status_admin_asserts.user_rate
DGAUGE, count
Custom assert trigger increment, per second
server_status_admin_connections.available
DGAUGE, count
Number of available connections
server_status_admin_connections.current
DGAUGE, count
Number of incoming DB connections
server_status_admin_extra_info.page_faults_rate
DGAUGE, count
Number of page faults
server_status_admin_globalLock.currentQueue.readers
DGAUGE, count
Number of operations in the current queue waiting for read lock release
server_status_admin_globalLock.currentQueue.writers
DGAUGE, count
Number of operations in the current queue waiting for write lock release
server_status_admin_metrics.cursor.open.noTimeout
DGAUGE, count
Number of open cursors with DBQuery.Option.noTimeout to prevent inactivity timeout
server_status_admin_metrics.cursor.open.pinned
DGAUGE, count
Number of pinned open cursors
server_status_admin_metrics.cursor.open.total
DGAUGE, count
Number of open cursors
server_status_admin_metrics.document.deleted_rate
DGAUGE, count
Increment of deleted documents, per second
server_status_admin_metrics.document.inserted_rate
DGAUGE, count
Increment of inserted documents, per second
server_status_admin_metrics.document.returned_rate
DGAUGE, count
Increment of returned documents, per second
server_status_admin_metrics.document.updated_rate
DGAUGE, count
Increment of updated documents, per second
server_status_admin_metrics.getLastError.wtime.totalMillis_rate
DGAUGE, milliseconds
Increment of milliseconds spent by a database waiting for write acknowledgement, per second
server_status_admin_metrics.operation.scanAndOrder_rate
DGAUGE, count
Increment of non-index data sorts, per second
server_status_admin_metrics.operation.writeConflicts_rate
DGAUGE, count
Increment of write conflicts, per second
server_status_admin_metrics.queryExecutor.scanned_rate
DGAUGE, count
Increment of scanned index keys, per second
server_status_admin_metrics.queryExecutor.scannedObjects_rate
DGAUGE, count
Increment of scanned documents, per second
server_status_admin_metrics.ttl.deletedDocuments_rate
DGAUGE, count
Increment of documents deleted using the TTL index, per second
server_status_admin_metrics.ttl.passes_rate
DGAUGE, count
Increment of background documents deleted from collections using the TTL index, per second
server_status_admin_opLatencies.commands.latency_rate
DGAUGE, microseconds
Rate of DB command execution latency change, per second
server_status_admin_opLatencies.commands.ops_rate
DGAUGE, count
Increment of DB collection operations, per second
server_status_admin_opLatencies.reads.latency_rate
DGAUGE, microseconds
Change in read command execution latency, per second
server_status_admin_opLatencies.reads.ops_rate
DGAUGE, count
Increment of DB collection reads, per second
server_status_admin_opLatencies.transactions.latency_rate
DGAUGE, microseconds
Change in transaction latency, per second
server_status_admin_opLatencies.transactions.ops_rate
DGAUGE, count
Increment of database transactions, per second
server_status_admin_opLatencies.writes.latency_rate
DGAUGE, microseconds
Change in write command execution latency, per second
server_status_admin_opLatencies.writes.ops_rate
DGAUGE, count
Increment of DB collection writes, per second
server_status_admin_repl.secondary
DGAUGE, count
Number of secondary nodes in the replica set
server_status_admin_opcounters.command_rate
DGAUGE, count
Increment of DB commands, per second, other than insert, update, and delete
server_status_admin_opcounters.delete_rate
DGAUGE, count
Increment of delete operations in the DB, per second
server_status_admin_opcounters.getmore_rate
DGAUGE, count
Increment of getmore operations in the DB, per second
server_status_admin_opcounters.insert_rate
DGAUGE, count
Increment of insert operations in the DB, per second
server_status_admin_opcounters.query_rate
DGAUGE, count
Increment of query operations in the DB, per second
server_status_admin_opcounters.update_rate
DGAUGE, count
Increment of update operations in the DB, per second
server_status_admin_opcountersRepl.command_rate
DGAUGE, count
Increment of replicated DB commands, per second
server_status_admin_opcountersRepl.delete_rate
DGAUGE, count
Increment of replicated delete operations in the DB, per second
server_status_admin_opcountersRepl.getmore_rate
DGAUGE, count
Increment of replicated getmore operations in the DB, per second
server_status_admin_opcountersRepl.insert_rate
DGAUGE, count
Increment of replicated insert operations in the DB, per second
server_status_admin_opcountersRepl.query_rate
DGAUGE, count
Increment of replicated query operations in the DB, per second
server_status_admin_opcountersRepl.update_rate
DGAUGE, count
Increment of replicated update operations in the DB, per second
server_status_admin_wiredTiger.cache.bytes_currently_in_the_cache
DGAUGE, bytes
Size of the WiredTiger cache used
server_status_admin_wiredTiger.cache.maximum_bytes_configured
DGAUGE, bytes
Maximum configured cache size
server_status_admin_wiredTiger.cache.modified_pages_evicted_rate
DGAUGE, count
Increment of modified RAM pages evicted, per second
server_status_admin_wiredTiger.cache.tracked_dirty_bytes_in_the_cache
DGAUGE, bytes
Dirty cache size
server_status_admin_wiredTiger.cache.unmodified_pages_evicted_rate
DGAUGE, count
Increment of unmodified RAM pages evicted, per second
server_status_admin_wiredTiger.concurrentTransactions.read.out
DGAUGE, count
Number of tickets used for concurrent read transactions
server_status_admin_wiredTiger.concurrentTransactions.read.totalTickets
DGAUGE, count
Number of tickets available for concurrent read transactions
server_status_admin_wiredTiger.concurrentTransactions.write.out
DGAUGE, count
Number of tickets used for concurrent write transactions
server_status_admin_wiredTiger.concurrentTransactions.write.totalTickets
DGAUGE, count
Number of tickets available for concurrent write transactions
server_status_admin_wiredTiger.transaction.transaction_begins
DGAUGE, count
Number of running transactions
server_status_admin_wiredTiger.transaction.transaction_checkpoint_max_time_msecs
DGAUGE, milliseconds
Maximum checkpoint creation time
server_status_admin_wiredTiger.transaction.transaction_checkpoint_min_time_msecs
DGAUGE, milliseconds
Minimum checkpoint creation time
server_status_admin_wiredTiger.transaction.transaction_checkpoint_most_recent_time_msecs
DGAUGE, milliseconds
Most recent checkpoint creation time
server_status_admin_wiredTiger.transaction.transactions_committed_rate
DGAUGE, count
Committed transaction increment, per second
server_status_admin_wiredTiger.transaction.transactions_rolled_back_rate
DGAUGE, count
Rolled back transaction increment, per second

Other metricsOther metrics

Name
Type, units
Description
can_read
DGAUGE, 0/1
Read access indicator.
It can be either 1 if a cluster is available for reads or 0 if it is not.
can_write
DGAUGE, 0/1
Write access indicator.
It can be either 1 if a cluster is available for writes or 0 if it is not.
oplog-diff
DGAUGE, milliseconds
Operation log size
oplog-maxSize
DGAUGE, bytes
Maximum size of the operation log
replset_status-replicationLag
DGAUGE, seconds
Replication lag

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