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Cluster Metrics

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Cluster Metrics

MinIO collects the following metrics at the cluster level. Metrics may include one or more labels, such as the server that calculated that metric.

These metrics can be obtained from any MinIO server once per collection by using the following URL:

shell
https://HOSTNAME:PORT/minio/v2/metrics/cluster

Replace HOSTNAME:PORT with the hostname of your MinIO deployment. For deployments behind a load balancer, use the load balancer hostname instead of a single node hostname.

Audit Metrics

NameDescription
minio_audit_failed_messagesTotal number of messages that failed to send since start.
minio_audit_target_queue_lengthNumber of unsent messages in queue for target.
minio_audit_total_messagesTotal number of messages sent since start.

Cluster Capacity Metrics

NameDescription
minio_cluster_capacity_raw_free_bytesTotal free capacity online in the cluster.
minio_cluster_capacity_raw_total_bytesTotal capacity online in the cluster.
minio_cluster_capacity_usable_free_bytesTotal free usable capacity online in the cluster.
minio_cluster_capacity_usable_total_bytesTotal usable capacity online in the cluster.
minio_cluster_objects_size_distributionDistribution of object sizes across a cluster
minio_cluster_objects_version_distributionDistribution of object versions across a cluster
minio_cluster_usage_object_totalTotal number of objects in a cluster
minio_cluster_usage_total_bytesTotal cluster usage in bytes
minio_cluster_usage_version_totalTotal number of versions (includes delete marker) in a cluster
minio_cluster_usage_deletemarker_totalTotal number of delete markers in a cluster
minio_cluster_bucket_totalTotal number of buckets in the cluster

Cluster Drive Metrics

NameDescription
minio_cluster_drive_offline_totalTotal drives offline in this cluster.
minio_cluster_drive_online_totalTotal drives online in this cluster.
minio_cluster_drive_totalTotal drives in this cluster.

Cluster ILM Metrics

NameDescription
minio_cluster_ilm_transitioned_bytesTotal bytes transitioned to a tier.
minio_cluster_ilm_transitioned_objectsTotal number of objects transitioned to a tier.
minio_cluster_ilm_transitioned_versionsTotal number of versions transitioned to a tier.

Cluster KMS Metrics

NameDescription
minio_cluster_kms_onlineReports whether the KMS is online (1) or offline (0).
minio_cluster_kms_request_errorNumber of KMS requests that failed due to some error. (HTTP 4xx status code).
minio_cluster_kms_request_failureNumber of KMS requests that failed due to some internal failure. (HTTP 5xx status code).
minio_cluster_kms_request_successNumber of KMS requests that succeeded.
minio_cluster_kms_uptimeThe time the KMS has been up and running in seconds.

Cluster Health Metrics

NameDescription
minio_cluster_nodes_offline_totalTotal number of MinIO nodes offline.
minio_cluster_nodes_online_totalTotal number of MinIO nodes online.
minio_cluster_write_quorumMaximum write quorum across all pools and sets
minio_cluster_health_statusGet current cluster health status
minio_cluster_health_erasure_set_healing_drivesCount of healing drives in the erasure set
minio_cluster_health_erasure_set_online_drivesCount of online drives in the erasure set
minio_cluster_health_erasure_set_read_quorumGet read quorum of the erasure set
minio_cluster_health_erasure_set_write_quorumGet write quorum of the erasure set
minio_cluster_health_erasure_set_statusGet current health status of the erasure set

Cluster Replication Metrics

Metrics marked as Site Replication Only only populate on deployments with Site Replication configurations. For deployments with bucket or batch configurations, these metrics populate instead under the Bucket Metrics endpoint.

NameDescription
minio_cluster_replication_last_hour_failed_bytes(Site Replication Only) Total number of bytes failed at least once to replicate in the last full hour.
minio_cluster_replication_last_hour_failed_count(Site Replication Only) Total number of objects which failed replication in the last full hour.
minio_cluster_replication_last_minute_failed_bytesTotal number of bytes failed at least once to replicate in the last full minute.
minio_cluster_replication_last_minute_failed_countTotal number of objects which failed replication in the last full minute.
minio_cluster_replication_total_failed_bytes(Site Replication Only) Total number of bytes failed at least once to replicate since server start.
minio_cluster_replication_total_failed_count(Site Replication Only) Total number of objects which failed replication since server start.
minio_cluster_replication_received_bytes(Site Replication Only) Total number of bytes replicated to this cluster from another source cluster.
minio_cluster_replication_received_count(Site Replication Only) Total number of objects received by this cluster from another source cluster.
minio_cluster_replication_sent_bytes(Site Replication Only) Total number of bytes replicated to the target cluster.
minio_cluster_replication_sent_count(Site Replication Only) Total number of objects replicated to the target cluster.
minio_cluster_replication_credential_errors(Site Replication Only) Total number of replication credential errors since server start
minio_cluster_replication_proxied_get_requests_total(Site Replication Only)Number of GET requests proxied to replication target
minio_cluster_replication_proxied_head_requests_total(Site Replication Only)Number of HEAD requests proxied to replication target
minio_cluster_replication_proxied_delete_tagging_requests_total(Site Replication Only)Number of DELETE tagging requests proxied to replication target
minio_cluster_replication_proxied_get_tagging_requests_total(Site Replication Only)Number of GET tagging requests proxied to replication target
minio_cluster_replication_proxied_put_tagging_requests_total(Site Replication Only)Number of PUT tagging requests proxied to replication target
minio_cluster_replication_proxied_get_requests_failures(Site Replication Only)Number of failures in GET requests proxied to replication target
minio_cluster_replication_proxied_head_requests_failures(Site Replication Only)Number of failures in HEAD requests proxied to replication target
minio_cluster_replication_proxied_delete_tagging_requests_failures(Site Replication Only)Number of failures proxying DELETE tagging requests to replication target
minio_cluster_replication_proxied_get_tagging_requests_failures(Site Replication Only)Number of failures proxying GET tagging requests to replication target
minio_cluster_replication_proxied_put_tagging_requests_failures(Site Replication Only)Number of failures proxying PUT tagging requests to replication target

Node Replication Metrics

Metrics marked as Site Replication Only only populate on deployments with Site Replication configurations. For deployments with bucket or batch configurations, these metrics populate instead under the Bucket Metrics endpoint.

NameDescription
minio_node_replication_current_active_workersTotal number of active replication workers
minio_node_replication_average_active_workersAverage number of active replication workers
minio_node_replication_max_active_workersMaximum number of active replication workers seen since server start
minio_node_replication_link_onlineReports whether the replication link is online (1) or offline (0).
minio_node_replication_link_offline_duration_secondsTotal duration of replication link being offline in seconds since last offline event
minio_node_replication_link_downtime_duration_secondsTotal downtime of replication link in seconds since server start
minio_node_replication_average_link_latency_msAverage replication link latency in milliseconds
minio_node_replication_max_link_latency_msMaximum replication link latency in milliseconds seen since server start
minio_node_replication_current_link_latency_msCurrent replication link latency in milliseconds
minio_node_replication_current_transfer_rateCurrent replication transfer rate in bytes/sec
minio_node_replication_average_transfer_rateAverage replication transfer rate in bytes/sec
minio_node_replication_max_transfer_rateMaximum replication transfer rate in bytes/sec seen since server start
minio_node_replication_last_minute_queued_countTotal number of objects queued for replication in the last full minute
minio_node_replication_last_minute_queued_bytesTotal number of bytes queued for replication in the last full minute
minio_node_replication_average_queued_countAverage number of objects queued for replication since server start
minio_node_replication_average_queued_bytesAverage number of bytes queued for replication since server start
minio_node_replication_max_queued_bytesMaximum number of bytes queued for replication seen since server start
minio_node_replication_max_queued_countMaximum number of objects queued for replication seen since server start
minio_node_replication_recent_backlog_countTotal number of objects seen in replication backlog in the last 5 minutes

Healing Metrics

NameDescription
minio_heal_objects_errors_totalObjects for which healing failed in current self healing run.
minio_heal_objects_heal_totalObjects healed in current self healing run.
minio_heal_objects_totalObjects scanned in current self healing run.
minio_heal_time_last_activity_nano_secondsTime elapsed (in nano seconds) since last self healing activity.

Inter Node Metrics

NameDescription
minio_inter_node_traffic_dial_avg_timeAverage time of internodes TCP dial calls.
minio_inter_node_traffic_dial_errorsTotal number of internode TCP dial timeouts and errors.
minio_inter_node_traffic_errors_totalTotal number of failed internode calls.
minio_inter_node_traffic_received_bytesTotal number of bytes received from other peer nodes.
minio_inter_node_traffic_sent_bytesTotal number of bytes sent to the other peer nodes.

Bucket Notification Metrics

NameDescription
minio_notify_current_send_in_progressNumber of concurrent async Send calls active to all targets (deprecated, please use minio_notify_target_current_send_in_progress instead)
minio_notify_events_errors_totalEvents that were failed to be sent to the targets (deprecated, please use minio_notify_target_failed_events instead)
minio_notify_events_sent_totalTotal number of events sent to the targets (deprecated, please use minio_notify_target_total_events instead)
minio_notify_events_skipped_totalEvents that were skipped to be sent to the targets due to the in-memory queue being full
minio_notify_target_current_send_in_progressNumber of concurrent async Send calls active to the target
minio_notify_target_queue_lengthNumber of events currently staged in the queue_dir configured for the target.
minio_notify_target_total_eventsTotal number of events sent (or) queued to the target

S3 API Request Metrics

NameDescription
minio_s3_requests_4xx_errors_totalTotal number S3 requests with (4xx) errors.
minio_s3_requests_5xx_errors_totalTotal number S3 requests with (5xx) errors.
minio_s3_requests_canceled_totalTotal number S3 requests canceled by the client.
minio_s3_requests_errors_totalTotal number S3 requests with (4xx and 5xx) errors.
minio_s3_requests_incoming_totalVolatile number of total incoming S3 requests.
minio_s3_requests_inflight_totalTotal number of S3 requests currently in flight.
minio_s3_requests_rejected_auth_totalTotal number S3 requests rejected for auth failure.
minio_s3_requests_rejected_header_totalTotal number S3 requests rejected for invalid header.
minio_s3_requests_rejected_invalid_totalTotal number S3 invalid requests.
minio_s3_requests_rejected_timestamp_totalTotal number S3 requests rejected for invalid timestamp.
minio_s3_requests_totalTotal number S3 requests.
minio_s3_requests_waiting_totalNumber of S3 requests in the waiting queue.
minio_s3_requests_ttfb_seconds_distributionDistribution of the time to first byte across API calls.
minio_s3_traffic_received_bytesTotal number of s3 bytes received.
minio_s3_traffic_sent_bytesTotal number of s3 bytes sent.

Software Metrics

NameDescription
minio_software_commit_infoGit commit hash for the MinIO release.
minio_software_version_infoMinIO Release tag for the server.

Drive Metrics

NameDescription
minio_node_drive_free_bytesTotal storage available on a drive.
minio_node_drive_free_inodesTotal free inodes.
minio_node_drive_latency_usAverage last minute latency in µs for drive API storage operations.
minio_node_drive_offline_totalTotal drives offline in this node.
minio_node_drive_online_totalTotal drives online in this node.
minio_node_drive_totalTotal drives in this node.
minio_node_drive_total_bytesTotal storage on a drive.
minio_node_drive_used_bytesTotal storage used on a drive.
minio_node_drive_errors_timeoutTotal number of drive timeout errors since server start
minio_node_drive_errors_ioerrorTotal number of drive I/O errors since server start
minio_node_drive_errors_availabilityTotal number of drive I/O errors, timeouts since server start
minio_node_drive_io_waitingTotal number I/O operations waiting on drive

Identity and Access Management (IAM) Metrics

NameDescription
minio_node_iam_last_sync_duration_millisLast successful IAM data sync duration in milliseconds.
minio_node_iam_since_last_sync_millisTime (in milliseconds) since last successful IAM data sync.
minio_node_iam_sync_failuresNumber of failed IAM data syncs since server start.
minio_node_iam_sync_successesNumber of successful IAM data syncs since server start.

Information Lifecycle Management (ILM) Metrics

NameDescription
minio_node_ilm_expiry_pending_tasksNumber of pending ILM expiry tasks in the queue.
minio_node_ilm_transition_active_tasksNumber of active ILM transition tasks.
minio_node_ilm_transition_pending_tasksNumber of pending ILM transition tasks in the queue.
minio_node_ilm_transition_missed_immediate_tasksNumber of missed immediate ILM transition tasks.
minio_node_ilm_versions_scannedTotal number of object versions checked for ilm actions since server start.
minio_node_ilm_action_count_delete_actionTotal action outcome of lifecycle checks since server start for deleting object
minio_node_ilm_action_count_delete_version_actionTotal action outcome of lifecycle checks since server start for deleting a version
minio_node_ilm_action_count_transition_actionTotal action outcome of lifecycle checks since server start for transition of an object
minio_node_ilm_action_count_transition_version_actionTotal action outcome of lifecycle checks since server start for transition of a particular object version
minio_node_ilm_action_count_delete_restored_actionTotal action outcome of lifecycle checks since server start for deletion of temporarily restored object
minio_node_ilm_action_count_delete_restored_version_actionTotal action outcome of lifecycle checks since server start for deletion of a temporarily restored version
minio_node_ilm_action_count_delete_all_versions_actionTotal action outcome of lifecycle checks since server start for deletion of all versions

Tier Metrics

NameDescription
minio_node_tier_tier_ttlb_seconds_distributionDistribution of time to last byte for objects downloaded from warm tier
minio_node_tier_requests_successNumber of requests to download object from warm tier that were successful
minio_node_tier_requests_failureNumber of requests to download object from warm tier that were failure

System Metrics

NameDescription
minio_node_file_descriptor_limit_totalLimit on total number of open file descriptors for the MinIO Server process.
minio_node_file_descriptor_open_totalTotal number of open file descriptors by the MinIO Server process.
minio_node_go_routine_totalTotal number of go routines running.
minio_node_io_rchar_bytesTotal bytes read by the process from the underlying storage system including cache, /proc/[pid]/io rchar.
minio_node_io_read_bytesTotal bytes read by the process from the underlying storage system, /proc/[pid]/io read_bytes.
minio_node_io_wchar_bytesTotal bytes written by the process to the underlying storage system including page cache, /proc/[pid]/io wchar.
minio_node_io_write_bytesTotal bytes written by the process to the underlying storage system, /proc/[pid]/io write_bytes.
minio_node_process_cpu_total_secondsTotal user and system CPU time spent in seconds by the process.
minio_node_process_resident_memory_bytesResident memory size in bytes.
minio_node_process_virtual_memory_bytesVirtual memory size in bytes.
minio_node_process_starttime_secondsStart time for MinIO process per node, time in seconds since Unix epoc.
minio_node_process_uptime_secondsUptime for MinIO process per node in seconds.

Scanner Metrics

NameDescription
minio_node_scanner_bucket_scans_finishedTotal number of bucket scans finished since server start.
minio_node_scanner_bucket_scans_startedTotal number of bucket scans started since server start.
minio_node_scanner_directories_scannedTotal number of directories scanned since server start.
minio_node_scanner_objects_scannedTotal number of unique objects scanned since server start.
minio_node_scanner_versions_scannedTotal number of object versions scanned since server start.
minio_node_syscall_read_totalTotal read SysCalls to the kernel. /proc/[pid]/io syscr.
minio_node_syscall_write_totalTotal write SysCalls to the kernel. /proc/[pid]/io syscw.
minio_usage_last_activity_nano_secondsTime elapsed (in nano seconds) since last scan activity.

Bucket Metrics

MinIO collects the following metrics at the bucket level. Each metric includes the bucket label to identify the corresponding bucket. Metrics may include one or more additional labels, such as the server that calculated that metric.

These metrics can be obtained from any MinIO server once per collection by using the following URL:

shell
https://HOSTNAME:PORT/minio/v2/metrics/bucket

Replace HOSTNAME:PORT with the hostname of your MinIO deployment. For deployments behind a load balancer, use the load balancer hostname instead of a single node hostname.

Distribution Metrics

NameDescription
minio_bucket_objects_size_distributionDistribution of object sizes in the bucket, includes label for the bucket name.
minio_bucket_objects_version_distributionDistribution of object sizes in a bucket, by number of versions

Replication Metrics

These metrics only populate on deployments with Bucket Replication or Batch Replication configurations. For deployments with Site Replication configured, select metrics populate under the Cluster Metrics endpoint.

NameDescription
minio_bucket_replication_last_minute_failed_bytesTotal number of bytes failed at least once to replicate in the last full minute.
minio_bucket_replication_last_minute_failed_countTotal number of objects which failed replication in the last full minute.
minio_bucket_replication_last_hour_failed_bytesTotal number of bytes failed at least once to replicate in the last full hour.
minio_bucket_replication_last_hour_failed_countTotal number of objects which failed replication in the last full hour.
minio_bucket_replication_total_failed_bytesTotal number of bytes failed at least once to replicate since server start.
minio_bucket_replication_total_failed_countTotal number of objects which failed replication since server start.
minio_bucket_replication_latency_msReplication latency in milliseconds.
minio_bucket_replication_received_bytesTotal number of bytes replicated to this bucket from another source bucket.
minio_bucket_replication_received_countTotal number of objects received by this bucket from another source bucket.
minio_bucket_replication_sent_bytesTotal number of bytes replicated to the target bucket.
minio_bucket_replication_sent_countTotal number of objects replicated to the target bucket.
minio_bucket_replication_credential_errorsTotal number of replication credential errors since server start
minio_bucket_replication_proxied_get_requests_totalNumber of GET requests proxied to replication target
minio_bucket_replication_proxied_head_requests_totalNumber of HEAD requests proxied to replication target
minio_bucket_replication_proxied_delete_tagging_requests_totalNumber of DELETE tagging requests proxied to replication target
minio_bucket_replication_proxied_get_tagging_requests_totalNumber of GET tagging requests proxied to replication target
minio_bucket_replication_proxied_put_tagging_requests_totalNumber of PUT tagging requests proxied to replication target
minio_bucket_replication_proxied_get_requests_failuresNumber of failures in GET requests proxied to replication target
minio_bucket_replication_proxied_head_requests_failuresNumber of failures in HEAD requests proxied to replication target
minio_bucket_replication_proxied_delete_tagging_requests_failuresNumber of failures in DELETE tagging proxy requests to replication target
minio_bucket_replication_proxied_get_tagging_requests_failuresNumber of failures in GET tagging proxy requests to replication target
minio_bucket_replication_proxied_put_tagging_requests_failuresNumber of failures in PUT tagging proxy requests to replication target

Traffic Metrics

NameDescription
minio_bucket_traffic_received_bytesTotal number of S3 bytes received for this bucket.
minio_bucket_traffic_sent_bytesTotal number of S3 bytes sent for this bucket.

Usage Metrics

NameDescription
minio_bucket_usage_object_totalTotal number of objects.
minio_bucket_usage_version_totalTotal number of versions (includes delete marker)
minio_bucket_usage_deletemarker_totalTotal number of delete markers.
minio_bucket_usage_total_bytesTotal bucket size in bytes.
minio_bucket_quota_total_bytesTotal bucket quota size in bytes.

Requests Metrics

NameDescription
minio_bucket_requests_4xx_errors_totalTotal number of S3 requests with (4xx) errors on a bucket.
minio_bucket_requests_5xx_errors_totalTotal number of S3 requests with (5xx) errors on a bucket.
minio_bucket_requests_inflight_totalTotal number of S3 requests currently in flight on a bucket.
minio_bucket_requests_totalTotal number of S3 requests on a bucket.
minio_bucket_requests_canceled_totalTotal number S3 requests canceled by the client.
minio_bucket_requests_ttfb_seconds_distributionDistribution of time to first byte across API calls per bucket.

Resource Metrics

MinIO collects the following resource metrics at the node level. Each metric includes the server label to identify the corresponding node. Metrics may include one or more additional labels, such as the drive path, interface name, etc.

These metrics can be obtained from any MinIO server once per collection by using the following URL:

shell
https://HOSTNAME:PORT/minio/v2/metrics/resource

Replace HOSTNAME:PORT with the hostname of your MinIO deployment. For deployments behind a load balancer, use the load balancer hostname instead of a single node hostname.

Drive Resource Metrics

NameDescription
minio_node_drive_total_bytesTotal bytes on a drive.
minio_node_drive_used_bytesUsed bytes on a drive.
minio_node_drive_total_inodesTotal inodes on a drive.
minio_node_drive_used_inodesTotal inodes used on a drive.
minio_node_drive_reads_per_secReads per second on a drive.
minio_node_drive_reads_kb_per_secKilobytes read per second on a drive.
minio_node_drive_reads_awaitAverage time for read requests to be served on a drive.
minio_node_drive_writes_per_secWrites per second on a drive.
minio_node_drive_writes_kb_per_secKilobytes written per second on a drive.
minio_node_drive_writes_awaitAverage time for write requests to be served on a drive.
minio_node_drive_perc_utilPercentage of time the disk was busy since uptime.

Network Interface Metrics

NameDescription
minio_node_if_rx_bytesBytes received on the interface in 60s.
minio_node_if_rx_bytes_avgBytes received on the interface in 60s (avg) since uptime.
minio_node_if_rx_bytes_maxBytes received on the interface in 60s (max) since uptime.
minio_node_if_rx_errorsReceive errors in 60s.
minio_node_if_rx_errors_avgReceive errors in 60s (avg).
minio_node_if_rx_errors_maxReceive errors in 60s (max).
minio_node_if_tx_bytesBytes transmitted in 60s.
minio_node_if_tx_bytes_avgBytes transmitted in 60s (avg).
minio_node_if_tx_bytes_maxBytes transmitted in 60s (max).
minio_node_if_tx_errorsTransmit errors in 60s.
minio_node_if_tx_errors_avgTransmit errors in 60s (avg).
minio_node_if_tx_errors_maxTransmit errors in 60s (max).

CPU Metrics

NameDescription
minio_node_cpu_avg_userCPU user time.
minio_node_cpu_avg_user_avgCPU user time (avg).
minio_node_cpu_avg_user_maxCPU user time (max).
minio_node_cpu_avg_systemCPU system time.
minio_node_cpu_avg_system_avgCPU system time (avg).
minio_node_cpu_avg_system_maxCPU system time (max).
minio_node_cpu_avg_idleCPU idle time.
minio_node_cpu_avg_idle_avgCPU idle time (avg).
minio_node_cpu_avg_idle_maxCPU idle time (max).
minio_node_cpu_avg_iowaitCPU ioWait time.
minio_node_cpu_avg_iowait_avgCPU ioWait time (avg).
minio_node_cpu_avg_iowait_maxCPU ioWait time (max).
minio_node_cpu_avg_niceCPU nice time.
minio_node_cpu_avg_nice_avgCPU nice time (avg).
minio_node_cpu_avg_nice_maxCPU nice time (max).
minio_node_cpu_avg_stealCPU steam time.
minio_node_cpu_avg_steal_avgCPU steam time (avg).
minio_node_cpu_avg_steal_maxCPU steam time (max).
minio_node_cpu_avg_load1CPU load average 1min.
minio_node_cpu_avg_load1_avgCPU load average 1min (avg).
minio_node_cpu_avg_load1_maxCPU load average 1min (max).
minio_node_cpu_avg_load1_percCPU load average 1min (percentage).
minio_node_cpu_avg_load1_perc_avgCPU load average 1min (percentage) (avg).
minio_node_cpu_avg_load1_perc_maxCPU load average 1min (percentage) (max).
minio_node_cpu_avg_load5CPU load average 5min.
minio_node_cpu_avg_load5_avgCPU load average 5min (avg).
minio_node_cpu_avg_load5_maxCPU load average 5min (max).
minio_node_cpu_avg_load5_percCPU load average 5min (percentage).
minio_node_cpu_avg_load5_perc_avgCPU load average 5min (percentage) (avg).
minio_node_cpu_avg_load5_perc_maxCPU load average 5min (percentage) (max).
minio_node_cpu_avg_load15CPU load average 15min.
minio_node_cpu_avg_load15_avgCPU load average 15min (avg).
minio_node_cpu_avg_load15_maxCPU load average 15min (max).
minio_node_cpu_avg_load15_percCPU load average 15min (percentage).
minio_node_cpu_avg_load15_perc_avgCPU load average 15min (percentage) (avg).
minio_node_cpu_avg_load15_perc_maxCPU load average 15min (percentage) (max).

Memory Metrics

NameDescription
minio_node_mem_availableAvailable memory on the node.
minio_node_mem_available_avgAvailable memory on the node (avg).
minio_node_mem_available_maxAvailable memory on the node (max).
minio_node_mem_buffersBuffers memory on the node.
minio_node_mem_buffers_avgBuffers memory on the node (avg).
minio_node_mem_buffers_maxBuffers memory on the node (max).
minio_node_mem_cacheCache memory on the node.
minio_node_mem_cache_avgCache memory on the node (avg).
minio_node_mem_cache_maxCache memory on the node (max).
minio_node_mem_freeFree memory on the node.
minio_node_mem_free_avgFree memory on the node (avg).
minio_node_mem_free_maxFree memory on the node (max).
minio_node_mem_sharedShared memory on the node.
minio_node_mem_shared_avgShared memory on the node (avg).
minio_node_mem_shared_maxShared memory on the node (max).
minio_node_mem_totalTotal memory on the node.
minio_node_mem_total_avgTotal memory on the node (avg).
minio_node_mem_total_maxTotal memory on the node (max).
minio_node_mem_usedUsed memory on the node.
minio_node_mem_used_avgUsed memory on the node (avg).
minio_node_mem_used_maxUsed memory on the node (max).
minio_node_mem_used_percUsed memory percentage on the node.
minio_node_mem_used_perc_avgUsed memory percentage on the node (avg).
minio_node_mem_used_perc_maxUsed memory percentage on the node (max).