Files
s3/docs/metrics/prometheus/list.md
zeekay 679a9bed4f Rebrand docs, helm, and user-facing strings: MinIO→S3, min.io→hanzo.ai
- Replace all MinIO brand references with S3 in docs, helm charts, and comments
- Replace quay.io/minio images with ghcr.io/hanzoai/s3 and ghcr.io/hanzos3/*
- Replace min.io domains: docs→docs.hanzo.ai, dl→dl.hanzo.space, play→play.hanzo.space
- Replace slack.min.io with hanzo.ai/discord
- Replace subnet.min.io with subnet.hanzo.ai
- Update Makefile REPO to ghcr.io/hanzoai
- Update helm values: mc image, OIDC clientId, service account name
- Update Go source user-facing URLs and messages
- Fix test configs and grafana dashboard descriptions
2026-02-23 17:28:20 -08:00

42 KiB

Cluster Metrics

S3 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 S3 server once per collection by using the following URL:

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

Replace HOSTNAME:PORT with the hostname of your S3 deployment. For deployments behind a load balancer, use the load balancer hostname instead of a single node hostname.

Audit Metrics

Name Description
s3_audit_failed_messages Total number of messages that failed to send since start.
s3_audit_target_queue_length Number of unsent messages in queue for target.
s3_audit_total_messages Total number of messages sent since start.

Cluster Capacity Metrics

Name Description
s3_cluster_capacity_raw_free_bytes Total free capacity online in the cluster.
s3_cluster_capacity_raw_total_bytes Total capacity online in the cluster.
s3_cluster_capacity_usable_free_bytes Total free usable capacity online in the cluster.
s3_cluster_capacity_usable_total_bytes Total usable capacity online in the cluster.
s3_cluster_objects_size_distribution Distribution of object sizes across a cluster
s3_cluster_objects_version_distribution Distribution of object versions across a cluster
s3_cluster_usage_object_total Total number of objects in a cluster
s3_cluster_usage_total_bytes Total cluster usage in bytes
s3_cluster_usage_version_total Total number of versions (includes delete marker) in a cluster
s3_cluster_usage_deletemarker_total Total number of delete markers in a cluster
s3_cluster_bucket_total Total number of buckets in the cluster

Cluster Drive Metrics

Name Description
s3_cluster_drive_offline_total Total drives offline in this cluster.
s3_cluster_drive_online_total Total drives online in this cluster.
s3_cluster_drive_total Total drives in this cluster.

Cluster ILM Metrics

Name Description
s3_cluster_ilm_transitioned_bytes Total bytes transitioned to a tier.
s3_cluster_ilm_transitioned_objects Total number of objects transitioned to a tier.
s3_cluster_ilm_transitioned_versions Total number of versions transitioned to a tier.

Cluster KMS Metrics

Name Description
s3_cluster_kms_online Reports whether the KMS is online (1) or offline (0).
s3_cluster_kms_request_error Number of KMS requests that failed due to some error. (HTTP 4xx status code).
s3_cluster_kms_request_failure Number of KMS requests that failed due to some internal failure. (HTTP 5xx status code).
s3_cluster_kms_request_success Number of KMS requests that succeeded.
s3_cluster_kms_uptime The time the KMS has been up and running in seconds.

Cluster Health Metrics

Name Description
s3_cluster_nodes_offline_total Total number of S3 nodes offline.
s3_cluster_nodes_online_total Total number of S3 nodes online.
s3_cluster_write_quorum Maximum write quorum across all pools and sets
s3_cluster_health_status Get current cluster health status
s3_cluster_health_erasure_set_healing_drives Count of healing drives in the erasure set
s3_cluster_health_erasure_set_online_drives Count of online drives in the erasure set
s3_cluster_health_erasure_set_read_quorum Get read quorum of the erasure set
s3_cluster_health_erasure_set_write_quorum Get write quorum of the erasure set
s3_cluster_health_erasure_set_status Get 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.

Name Description
s3_cluster_replication_last_hour_failed_bytes (Site Replication Only) Total number of bytes failed at least once to replicate in the last full hour.
s3_cluster_replication_last_hour_failed_count (Site Replication Only) Total number of objects which failed replication in the last full hour.
s3_cluster_replication_last_minute_failed_bytes Total number of bytes failed at least once to replicate in the last full minute.
s3_cluster_replication_last_minute_failed_count Total number of objects which failed replication in the last full minute.
s3_cluster_replication_total_failed_bytes (Site Replication Only) Total number of bytes failed at least once to replicate since server start.
s3_cluster_replication_total_failed_count (Site Replication Only) Total number of objects which failed replication since server start.
s3_cluster_replication_received_bytes (Site Replication Only) Total number of bytes replicated to this cluster from another source cluster.
s3_cluster_replication_received_count (Site Replication Only) Total number of objects received by this cluster from another source cluster.
s3_cluster_replication_sent_bytes (Site Replication Only) Total number of bytes replicated to the target cluster.
s3_cluster_replication_sent_count (Site Replication Only) Total number of objects replicated to the target cluster.
s3_cluster_replication_credential_errors (Site Replication Only) Total number of replication credential errors since server start
s3_cluster_replication_proxied_get_requests_total (Site Replication Only)Number of GET requests proxied to replication target
s3_cluster_replication_proxied_head_requests_total (Site Replication Only)Number of HEAD requests proxied to replication target
s3_cluster_replication_proxied_delete_tagging_requests_total (Site Replication Only)Number of DELETE tagging requests proxied to replication target
s3_cluster_replication_proxied_get_tagging_requests_total (Site Replication Only)Number of GET tagging requests proxied to replication target
s3_cluster_replication_proxied_put_tagging_requests_total (Site Replication Only)Number of PUT tagging requests proxied to replication target
s3_cluster_replication_proxied_get_requests_failures (Site Replication Only)Number of failures in GET requests proxied to replication target
s3_cluster_replication_proxied_head_requests_failures (Site Replication Only)Number of failures in HEAD requests proxied to replication target
s3_cluster_replication_proxied_delete_tagging_requests_failures (Site Replication Only)Number of failures proxying DELETE tagging requests to replication target
s3_cluster_replication_proxied_get_tagging_requests_failures (Site Replication Only)Number of failures proxying GET tagging requests to replication target
s3_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.

Name Description
s3_node_replication_current_active_workers Total number of active replication workers
s3_node_replication_average_active_workers Average number of active replication workers
s3_node_replication_max_active_workers Maximum number of active replication workers seen since server start
s3_node_replication_link_online Reports whether the replication link is online (1) or offline (0).
s3_node_replication_link_offline_duration_seconds Total duration of replication link being offline in seconds since last offline event
s3_node_replication_link_downtime_duration_seconds Total downtime of replication link in seconds since server start
s3_node_replication_average_link_latency_ms Average replication link latency in milliseconds
s3_node_replication_max_link_latency_ms Maximum replication link latency in milliseconds seen since server start
s3_node_replication_current_link_latency_ms Current replication link latency in milliseconds
s3_node_replication_current_transfer_rate Current replication transfer rate in bytes/sec
s3_node_replication_average_transfer_rate Average replication transfer rate in bytes/sec
s3_node_replication_max_transfer_rate Maximum replication transfer rate in bytes/sec seen since server start
s3_node_replication_last_minute_queued_count Total number of objects queued for replication in the last full minute
s3_node_replication_last_minute_queued_bytes Total number of bytes queued for replication in the last full minute
s3_node_replication_average_queued_count Average number of objects queued for replication since server start
s3_node_replication_average_queued_bytes Average number of bytes queued for replication since server start
s3_node_replication_max_queued_bytes Maximum number of bytes queued for replication seen since server start
s3_node_replication_max_queued_count Maximum number of objects queued for replication seen since server start
s3_node_replication_recent_backlog_count Total number of objects seen in replication backlog in the last 5 minutes

Healing Metrics

Name Description
s3_heal_objects_errors_total Objects for which healing failed in current self healing run.
s3_heal_objects_heal_total Objects healed in current self healing run.
s3_heal_objects_total Objects scanned in current self healing run.
s3_heal_time_last_activity_nano_seconds Time elapsed (in nano seconds) since last self healing activity.

Inter Node Metrics

Name Description
s3_inter_node_traffic_dial_avg_time Average time of internodes TCP dial calls.
s3_inter_node_traffic_dial_errors Total number of internode TCP dial timeouts and errors.
s3_inter_node_traffic_errors_total Total number of failed internode calls.
s3_inter_node_traffic_received_bytes Total number of bytes received from other peer nodes.
s3_inter_node_traffic_sent_bytes Total number of bytes sent to the other peer nodes.

Bucket Notification Metrics

Name Description
s3_notify_current_send_in_progress Number of concurrent async Send calls active to all targets (deprecated, please use s3_notify_target_current_send_in_progress instead)
s3_notify_events_errors_total Events that were failed to be sent to the targets (deprecated, please use s3_notify_target_failed_events instead)
s3_notify_events_sent_total Total number of events sent to the targets (deprecated, please use s3_notify_target_total_events instead)
s3_notify_events_skipped_total Events that were skipped to be sent to the targets due to the in-memory queue being full
s3_notify_target_current_send_in_progress Number of concurrent async Send calls active to the target
s3_notify_target_queue_length Number of events currently staged in the queue_dir configured for the target.
s3_notify_target_total_events Total number of events sent (or) queued to the target

S3 API Request Metrics

Name Description
s3_s3_requests_4xx_errors_total Total number S3 requests with (4xx) errors.
s3_s3_requests_5xx_errors_total Total number S3 requests with (5xx) errors.
s3_s3_requests_canceled_total Total number S3 requests canceled by the client.
s3_s3_requests_errors_total Total number S3 requests with (4xx and 5xx) errors.
s3_s3_requests_incoming_total Volatile number of total incoming S3 requests.
s3_s3_requests_inflight_total Total number of S3 requests currently in flight.
s3_s3_requests_rejected_auth_total Total number S3 requests rejected for auth failure.
s3_s3_requests_rejected_header_total Total number S3 requests rejected for invalid header.
s3_s3_requests_rejected_invalid_total Total number S3 invalid requests.
s3_s3_requests_rejected_timestamp_total Total number S3 requests rejected for invalid timestamp.
s3_s3_requests_total Total number S3 requests.
s3_s3_requests_waiting_total Number of S3 requests in the waiting queue.
s3_s3_requests_ttfb_seconds_distribution Distribution of the time to first byte across API calls.
s3_s3_traffic_received_bytes Total number of s3 bytes received.
s3_s3_traffic_sent_bytes Total number of s3 bytes sent.

Software Metrics

Name Description
s3_software_commit_info Git commit hash for the S3 release.
s3_software_version_info S3 release tag for the server.

Drive Metrics

Name Description
s3_node_drive_free_bytes Total storage available on a drive.
s3_node_drive_free_inodes Total free inodes.
s3_node_drive_latency_us Average last minute latency in µs for drive API storage operations.
s3_node_drive_offline_total Total drives offline in this node.
s3_node_drive_online_total Total drives online in this node.
s3_node_drive_total Total drives in this node.
s3_node_drive_total_bytes Total storage on a drive.
s3_node_drive_used_bytes Total storage used on a drive.
s3_node_drive_errors_timeout Total number of drive timeout errors since server start
s3_node_drive_errors_ioerror Total number of drive I/O errors since server start
s3_node_drive_errors_availability Total number of drive I/O errors, timeouts since server start
s3_node_drive_io_waiting Total number I/O operations waiting on drive

Identity and Access Management (IAM) Metrics

Name Description
s3_node_iam_last_sync_duration_millis Last successful IAM data sync duration in milliseconds.
s3_node_iam_since_last_sync_millis Time (in milliseconds) since last successful IAM data sync.
s3_node_iam_sync_failures Number of failed IAM data syncs since server start.
s3_node_iam_sync_successes Number of successful IAM data syncs since server start.

Information Lifecycle Management (ILM) Metrics

Name Description
s3_node_ilm_expiry_pending_tasks Number of pending ILM expiry tasks in the queue.
s3_node_ilm_transition_active_tasks Number of active ILM transition tasks.
s3_node_ilm_transition_pending_tasks Number of pending ILM transition tasks in the queue.
s3_node_ilm_transition_missed_immediate_tasks Number of missed immediate ILM transition tasks.
s3_node_ilm_versions_scanned Total number of object versions checked for ilm actions since server start.
s3_node_ilm_action_count_delete_action Total action outcome of lifecycle checks since server start for deleting object
s3_node_ilm_action_count_delete_version_action Total action outcome of lifecycle checks since server start for deleting a version
s3_node_ilm_action_count_transition_action Total action outcome of lifecycle checks since server start for transition of an object
s3_node_ilm_action_count_transition_version_action Total action outcome of lifecycle checks since server start for transition of a particular object version
s3_node_ilm_action_count_delete_restored_action Total action outcome of lifecycle checks since server start for deletion of temporarily restored object
s3_node_ilm_action_count_delete_restored_version_action Total action outcome of lifecycle checks since server start for deletion of a temporarily restored version
s3_node_ilm_action_count_delete_all_versions_action Total action outcome of lifecycle checks since server start for deletion of all versions

Tier Metrics

Name Description
s3_node_tier_tier_ttlb_seconds_distribution Distribution of time to last byte for objects downloaded from warm tier
s3_node_tier_requests_success Number of requests to download object from warm tier that were successful
s3_node_tier_requests_failure Number of requests to download object from warm tier that were failure

System Metrics

Name Description
s3_node_file_descriptor_limit_total Limit on total number of open file descriptors for the S3 server process.
s3_node_file_descriptor_open_total Total number of open file descriptors by the S3 server process.
s3_node_go_routine_total Total number of go routines running.
s3_node_io_rchar_bytes Total bytes read by the process from the underlying storage system including cache, /proc/[pid]/io rchar.
s3_node_io_read_bytes Total bytes read by the process from the underlying storage system, /proc/[pid]/io read_bytes.
s3_node_io_wchar_bytes Total bytes written by the process to the underlying storage system including page cache, /proc/[pid]/io wchar.
s3_node_io_write_bytes Total bytes written by the process to the underlying storage system, /proc/[pid]/io write_bytes.
s3_node_process_cpu_total_seconds Total user and system CPU time spent in seconds by the process.
s3_node_process_resident_memory_bytes Resident memory size in bytes.
s3_node_process_virtual_memory_bytes Virtual memory size in bytes.
s3_node_process_starttime_seconds Start time for S3 process per node, time in seconds since Unix epoc.
s3_node_process_uptime_seconds Uptime for S3 process per node in seconds.

Scanner Metrics

Name Description
s3_node_scanner_bucket_scans_finished Total number of bucket scans finished since server start.
s3_node_scanner_bucket_scans_started Total number of bucket scans started since server start.
s3_node_scanner_directories_scanned Total number of directories scanned since server start.
s3_node_scanner_objects_scanned Total number of unique objects scanned since server start.
s3_node_scanner_versions_scanned Total number of object versions scanned since server start.
s3_node_syscall_read_total Total read SysCalls to the kernel. /proc/[pid]/io syscr.
s3_node_syscall_write_total Total write SysCalls to the kernel. /proc/[pid]/io syscw.
s3_usage_last_activity_nano_seconds Time elapsed (in nano seconds) since last scan activity.

Bucket Metrics

S3 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 S3 server once per collection by using the following URL:

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

Replace HOSTNAME:PORT with the hostname of your S3 deployment. For deployments behind a load balancer, use the load balancer hostname instead of a single node hostname.

Distribution Metrics

Name Description
s3_bucket_objects_size_distribution Distribution of object sizes in the bucket, includes label for the bucket name.
s3_bucket_objects_version_distribution Distribution 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.

Name Description
s3_bucket_replication_last_minute_failed_bytes Total number of bytes failed at least once to replicate in the last full minute.
s3_bucket_replication_last_minute_failed_count Total number of objects which failed replication in the last full minute.
s3_bucket_replication_last_hour_failed_bytes Total number of bytes failed at least once to replicate in the last full hour.
s3_bucket_replication_last_hour_failed_count Total number of objects which failed replication in the last full hour.
s3_bucket_replication_total_failed_bytes Total number of bytes failed at least once to replicate since server start.
s3_bucket_replication_total_failed_count Total number of objects which failed replication since server start.
s3_bucket_replication_latency_ms Replication latency in milliseconds.
s3_bucket_replication_received_bytes Total number of bytes replicated to this bucket from another source bucket.
s3_bucket_replication_received_count Total number of objects received by this bucket from another source bucket.
s3_bucket_replication_sent_bytes Total number of bytes replicated to the target bucket.
s3_bucket_replication_sent_count Total number of objects replicated to the target bucket.
s3_bucket_replication_credential_errors Total number of replication credential errors since server start
s3_bucket_replication_proxied_get_requests_total Number of GET requests proxied to replication target
s3_bucket_replication_proxied_head_requests_total Number of HEAD requests proxied to replication target
s3_bucket_replication_proxied_delete_tagging_requests_total Number of DELETE tagging requests proxied to replication target
s3_bucket_replication_proxied_get_tagging_requests_total Number of GET tagging requests proxied to replication target
s3_bucket_replication_proxied_put_tagging_requests_total Number of PUT tagging requests proxied to replication target
s3_bucket_replication_proxied_get_requests_failures Number of failures in GET requests proxied to replication target
s3_bucket_replication_proxied_head_requests_failures Number of failures in HEAD requests proxied to replication target
s3_bucket_replication_proxied_delete_tagging_requests_failures Number of failures in DELETE tagging proxy requests to replication target
s3_bucket_replication_proxied_get_tagging_requests_failures Number of failures in GET tagging proxy requests to replication target
s3_bucket_replication_proxied_put_tagging_requests_failures Number of failures in PUT tagging proxy requests to replication target

Traffic Metrics

Name Description
s3_bucket_traffic_received_bytes Total number of S3 bytes received for this bucket.
s3_bucket_traffic_sent_bytes Total number of S3 bytes sent for this bucket.

Usage Metrics

Name Description
s3_bucket_usage_object_total Total number of objects.
s3_bucket_usage_version_total Total number of versions (includes delete marker)
s3_bucket_usage_deletemarker_total Total number of delete markers.
s3_bucket_usage_total_bytes Total bucket size in bytes.
s3_bucket_quota_total_bytes Total bucket quota size in bytes.

Requests Metrics

Name Description
s3_bucket_requests_4xx_errors_total Total number of S3 requests with (4xx) errors on a bucket.
s3_bucket_requests_5xx_errors_total Total number of S3 requests with (5xx) errors on a bucket.
s3_bucket_requests_inflight_total Total number of S3 requests currently in flight on a bucket.
s3_bucket_requests_total Total number of S3 requests on a bucket.
s3_bucket_requests_canceled_total Total number S3 requests canceled by the client.
s3_bucket_requests_ttfb_seconds_distribution Distribution of time to first byte across API calls per bucket.

Resource Metrics

S3 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 S3 server once per collection by using the following URL:

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

Replace HOSTNAME:PORT with the hostname of your S3 deployment. For deployments behind a load balancer, use the load balancer hostname instead of a single node hostname.

Drive Resource Metrics

Name Description
s3_node_drive_total_bytes Total bytes on a drive.
s3_node_drive_used_bytes Used bytes on a drive.
s3_node_drive_total_inodes Total inodes on a drive.
s3_node_drive_used_inodes Total inodes used on a drive.
s3_node_drive_reads_per_sec Reads per second on a drive.
s3_node_drive_reads_kb_per_sec Kilobytes read per second on a drive.
s3_node_drive_reads_await Average time for read requests to be served on a drive.
s3_node_drive_writes_per_sec Writes per second on a drive.
s3_node_drive_writes_kb_per_sec Kilobytes written per second on a drive.
s3_node_drive_writes_await Average time for write requests to be served on a drive.
s3_node_drive_perc_util Percentage of time the disk was busy since uptime.

Network Interface Metrics

Name Description
s3_node_if_rx_bytes Bytes received on the interface in 60s.
s3_node_if_rx_bytes_avg Bytes received on the interface in 60s (avg) since uptime.
s3_node_if_rx_bytes_max Bytes received on the interface in 60s (max) since uptime.
s3_node_if_rx_errors Receive errors in 60s.
s3_node_if_rx_errors_avg Receive errors in 60s (avg).
s3_node_if_rx_errors_max Receive errors in 60s (max).
s3_node_if_tx_bytes Bytes transmitted in 60s.
s3_node_if_tx_bytes_avg Bytes transmitted in 60s (avg).
s3_node_if_tx_bytes_max Bytes transmitted in 60s (max).
s3_node_if_tx_errors Transmit errors in 60s.
s3_node_if_tx_errors_avg Transmit errors in 60s (avg).
s3_node_if_tx_errors_max Transmit errors in 60s (max).

CPU Metrics

Name Description
s3_node_cpu_avg_user CPU user time.
s3_node_cpu_avg_user_avg CPU user time (avg).
s3_node_cpu_avg_user_max CPU user time (max).
s3_node_cpu_avg_system CPU system time.
s3_node_cpu_avg_system_avg CPU system time (avg).
s3_node_cpu_avg_system_max CPU system time (max).
s3_node_cpu_avg_idle CPU idle time.
s3_node_cpu_avg_idle_avg CPU idle time (avg).
s3_node_cpu_avg_idle_max CPU idle time (max).
s3_node_cpu_avg_iowait CPU ioWait time.
s3_node_cpu_avg_iowait_avg CPU ioWait time (avg).
s3_node_cpu_avg_iowait_max CPU ioWait time (max).
s3_node_cpu_avg_nice CPU nice time.
s3_node_cpu_avg_nice_avg CPU nice time (avg).
s3_node_cpu_avg_nice_max CPU nice time (max).
s3_node_cpu_avg_steal CPU steam time.
s3_node_cpu_avg_steal_avg CPU steam time (avg).
s3_node_cpu_avg_steal_max CPU steam time (max).
s3_node_cpu_avg_load1 CPU load average 1min.
s3_node_cpu_avg_load1_avg CPU load average 1min (avg).
s3_node_cpu_avg_load1_max CPU load average 1min (max).
s3_node_cpu_avg_load1_perc CPU load average 1min (percentage).
s3_node_cpu_avg_load1_perc_avg CPU load average 1min (percentage) (avg).
s3_node_cpu_avg_load1_perc_max CPU load average 1min (percentage) (max).
s3_node_cpu_avg_load5 CPU load average 5min.
s3_node_cpu_avg_load5_avg CPU load average 5min (avg).
s3_node_cpu_avg_load5_max CPU load average 5min (max).
s3_node_cpu_avg_load5_perc CPU load average 5min (percentage).
s3_node_cpu_avg_load5_perc_avg CPU load average 5min (percentage) (avg).
s3_node_cpu_avg_load5_perc_max CPU load average 5min (percentage) (max).
s3_node_cpu_avg_load15 CPU load average 15min.
s3_node_cpu_avg_load15_avg CPU load average 15min (avg).
s3_node_cpu_avg_load15_max CPU load average 15min (max).
s3_node_cpu_avg_load15_perc CPU load average 15min (percentage).
s3_node_cpu_avg_load15_perc_avg CPU load average 15min (percentage) (avg).
s3_node_cpu_avg_load15_perc_max CPU load average 15min (percentage) (max).

Memory Metrics

Name Description
s3_node_mem_available Available memory on the node.
s3_node_mem_available_avg Available memory on the node (avg).
s3_node_mem_available_max Available memory on the node (max).
s3_node_mem_buffers Buffers memory on the node.
s3_node_mem_buffers_avg Buffers memory on the node (avg).
s3_node_mem_buffers_max Buffers memory on the node (max).
s3_node_mem_cache Cache memory on the node.
s3_node_mem_cache_avg Cache memory on the node (avg).
s3_node_mem_cache_max Cache memory on the node (max).
s3_node_mem_free Free memory on the node.
s3_node_mem_free_avg Free memory on the node (avg).
s3_node_mem_free_max Free memory on the node (max).
s3_node_mem_shared Shared memory on the node.
s3_node_mem_shared_avg Shared memory on the node (avg).
s3_node_mem_shared_max Shared memory on the node (max).
s3_node_mem_total Total memory on the node.
s3_node_mem_total_avg Total memory on the node (avg).
s3_node_mem_total_max Total memory on the node (max).
s3_node_mem_used Used memory on the node.
s3_node_mem_used_avg Used memory on the node (avg).
s3_node_mem_used_max Used memory on the node (max).
s3_node_mem_used_perc Used memory percentage on the node.
s3_node_mem_used_perc_avg Used memory percentage on the node (avg).
s3_node_mem_used_perc_max Used memory percentage on the node (max).