# Metrics Version 3 In metrics version 3, all metrics are available under the following base endpoint: ``` /minio/metrics/v3 ``` To query metrics of a specific type, append the appropriate path to the base endpoint. Querying the base endpoint returns "404 Not Found." Metrics are organized into groups at paths **relative** to the top-level endpoint above. Metrics are also available using the [MinIO Admin Client](https://min.io/docs/minio/linux/reference/minio-mc-admin.html) and the `mc admin prometheus metrics` command. For more information, see [Metrics and Alerts](https://min.io/docs/minio/linux/operations/monitoring/metrics-and-alerts.html) in the MinIO Documentation. ## Metrics Request Handling Each endpoint can be queried as needed via a scrape configuration in Prometheus or a compatible metrics collection tool. You should schedule scrape operations so a prior scrape completes before the next one begins. For ease of configuration, each (non-empty) parent of the path serves all the metric endpoints at its child paths. For example, to query all system metrics scrape `/minio/metrics/v3/system/`. Each metric endpoint may support multiple child endpoints. For example, the `/v3/system/` metric has multiple child groups as `/v3/system/<child>`. Querying the parent endpoint returns metrics for all child groups. Querying a child group returns only metrics for that child. ### Per-bucket Metrics Metrics with a `/bucket` component in the path return results for each specified bucket in the deployment. These endpoints **require** providing a list of buckets as a `bucket` query parameter. The endpoint then returns only metrics for the given buckets, with the bucket name in a `bucket` label. For example, to query API metrics for buckets `test1` and `test2`, make a scrape request to `/minio/metrics/v3/api/bucket?buckets=test1,test2`. ### List Available Metrics Instead of a metrics scrape, you can list the metrics that would be returned by a path by adding a `list` query parameter. The MinIO server then lists all available metrics that could be returned. Note that during an actual metrics scrape only metrics with available _values_ are returned. Metrics with null values are omitted from the scrape results. To set the output format, set the request `Content-Type` to the desired format. Accepted values are `application/json` for JSON output or `text/plain` for a Markdown-formatted table. The default is Markdown. For example, the the following returns a list of all available bucket metrics: ``` /minio/metrics/v3/api/bucket?list ``` ## Metric Categories At a high level, metrics are grouped into categories as described in the following sections. The path in each of the tables is relative to the top-level endpoint. Note that the standard GoCollector metrics are not shown. ### Request metrics Metrics about requests served by the current node. | Path | Description | |-----------------|-----------------------------------------------| | `/api/requests` | Metrics over all requests. | | `/bucket/api` | Metrics over all requests for a given bucket. | #### `/api/requests` | Name | Description | Labels | |------------------------------------------------|--------------------------------------------------------------------------------|----------------------------------------------| | `minio_api_requests_rejected_auth_total` | Total number of requests rejected for auth failure. <br><br>Type: counter | `type`, `pool_index`, `server` | | `minio_api_requests_rejected_header_total` | Total number of requests rejected for invalid header. <br><br>Type: counter | `type`, `pool_index`, `server` | | `minio_api_requests_rejected_timestamp_total` | Total number of requests rejected for invalid timestamp. <br><br>Type: counter | `type`, `pool_index`, `server` | | `minio_api_requests_rejected_invalid_total` | Total number of invalid requests. <br><br>Type: counter | `type`, `pool_index`, `server` | | `minio_api_requests_waiting_total` | Total number of requests in the waiting queue. <br><br>Type: gauge | `type`, `pool_index`, `server` | | `minio_api_requests_incoming_total` | Total number of incoming requests. <br><br>Type: gauge | `type`, `pool_index`, `server` | | `minio_api_requests_inflight_total` | Total number of requests currently in flight. <br><br>Type: gauge | `name`, `type`, `pool_index`, `server` | | `minio_api_requests_total` | Total number of requests. <br><br>Type: counter | `name`, `type`, `pool_index`, `server` | | `minio_api_requests_errors_total` | Total number of requests with 4xx or 5xx errors. <br><br>Type: counter | `name`, `type`, `pool_index`, `server` | | `minio_api_requests_5xx_errors_total` | Total number of requests with 5xx errors. <br><br>Type: counter | `name`, `type`, `pool_index`, `server` | | `minio_api_requests_4xx_errors_total` | Total number of requests with 4xx errors. <br><br>Type: counter | `name`, `type`, `pool_index`, `server` | | `minio_api_requests_canceled_total` | Total number of requests canceled by the client. <br><br>Type: counter | `name`, `type`, `pool_index`, `server` | | `minio_api_requests_ttfb_seconds_distribution` | Distribution of time to first byte across API calls. <br><br>Type: counter | `name`, `type`, `le`, `pool_index`, `server` | | `minio_api_requests_traffic_sent_bytes` | Total number of bytes sent. <br><br>Type: counter | `type`, `pool_index`, `server` | | `minio_api_requests_traffic_received_bytes` | Total number of bytes received. <br><br>Type: counter | `type`, `pool_index`, `server` | #### `/bucket/api` | Name | Description | Labels | |----------------------------------------------|-----------------------------------------------------------------------------------------|--------------------------------------------------------| | `minio_bucket_api_traffic_received_bytes` | Total number of bytes sent for a bucket. <br><br>Type: counter | `bucket`, `type`, `server`, `pool_index` | | `minio_bucket_api_traffic_sent_bytes` | Total number of bytes received for a bucket. <br><br>Type: counter | `bucket`, `type`, `server`, `pool_index` | | `minio_bucket_api_inflight_total` | Total number of requests currently in flight for a bucket. <br><br>Type: gauge | `bucket`, `name`, `type`, `server`, `pool_index` | | `minio_bucket_api_total` | Total number of requests for a bucket. <br><br>Type: counter | `bucket`, `name`, `type`, `server`, `pool_index` | | `minio_bucket_api_canceled_total` | Total number of requests canceled by the client for a bucket. <br><br>Type: counter | `bucket`, `name`, `type`, `server`, `pool_index` | | `minio_bucket_api_4xx_errors_total` | Total number of requests with 4xx errors for a bucket. <br><br>Type: counter | `bucket`, `name`, `type`, `server`, `pool_index` | | `minio_bucket_api_5xx_errors_total` | Total number of requests with 5xx errors for a bucket. <br><br>Type: counter | `bucket`, `name`, `type`, `server`, `pool_index` | | `minio_bucket_api_ttfb_seconds_distribution` | Distribution of time to first byte across API calls for a bucket. <br><br>Type: counter | `bucket`, `name`, `le`, `type`, `server`, `pool_index` | ### Audit metrics Metrics about the MinIO audit functionality. | Path | Description | |----------|-----------------------------------------| | `/audit` | Metrics related to audit functionality. | #### `/audit` | Name | Description | Labels | |-----------------------------------|---------------------------------------------------------------------------------|-----------------------| | `minio_audit_failed_messages` | Total number of messages that failed to send since start. <br><br>Type: counter | `target_id`, `server` | | `minio_audit_target_queue_length` | Number of unsent messages in queue for target. <br><br>Type: gauge | `target_id`, `server` | | `minio_audit_total_messages` | Total number of messages sent since start. <br><br>Type: counter | `target_id`, `server` | ### Cluster metrics Metrics about an entire MinIO cluster. | Path | Description | |--------------------------|--------------------------------| | `/cluster/config` | Cluster configuration metrics. | | `/cluster/erasure-set` | Erasure set metrics. | | `/cluster/health` | Cluster health metrics. | | `/cluster/iam` | Cluster iam metrics. | | `/cluster/usage/buckets` | Object statistics by bucket. | | `/cluster/usage/objects` | Object statistics. | #### `/cluster/config` | Name | Description | Labels | |----------------------------------------|--------------------------------------------------------------|--------| | `minio_cluster_config_rrs_parity` | Reduced redundancy storage class parity. <br><br>Type: gauge | | | `minio_cluster_config_standard_parity` | Standard storage class parity. <br><br>Type: gauge | | #### `/cluster/erasure-set` | Name | Description | Labels | |--------------------------------------------------|---------------------------------------------------------------------------------------------------------|---------------------| | `minio_cluster_erasure_set_overall_write_quorum` | Overall write quorum across pools and sets. <br><br>Type: gauge | | | `minio_cluster_erasure_set_overall_health` | Overall health across pools and sets (1=healthy, 0=unhealthy). <br><br>Type: gauge | | | `minio_cluster_erasure_set_read_quorum` | Read quorum for the erasure set in a pool. <br><br>Type: gauge | `pool_id`, `set_id` | | `minio_cluster_erasure_set_write_quorum` | Write quorum for the erasure set in a pool. <br><br>Type: gauge | `pool_id`, `set_id` | | `minio_cluster_erasure_set_online_drives_count` | Count of online drives in the erasure set in a pool. <br><br>Type: gauge | `pool_id`, `set_id` | | `minio_cluster_erasure_set_healing_drives_count` | Count of healing drives in the erasure set in a pool. <br><br>Type: gauge | `pool_id`, `set_id` | | `minio_cluster_erasure_set_health` | Health of the erasure set in a pool (1=healthy, 0=unhealthy). <br><br>Type: gauge | `pool_id`, `set_id` | | `minio_cluster_erasure_set_read_tolerance` | Number of drive failures that can be tolerated without disrupting read operations. <br><br>Type: gauge | `pool_id`, `set_id` | | `minio_cluster_erasure_set_write_tolerance` | Number of drive failures that can be tolerated without disrupting write operations. <br><br>Type: gauge | `pool_id`, `set_id` | | `minio_cluster_erasure_set_read_health` | Health of the erasure set in a pool for read operations (1=healthy, 0=unhealthy). <br><br>Type: gauge | `pool_id`, `set_id` | | `minio_cluster_erasure_set_write_health` | Health of the erasure set in a pool for write operations (1=healthy, 0=unhealthy). <br><br>Type: gauge | `pool_id`, `set_id` | #### `/cluster/health` | Name | Description | Labels | |----------------------------------------------------|---------------------------------------------------------------------|--------| | `minio_cluster_health_drives_offline_count` | Count of offline drives in the cluster. <br><br>Type: gauge | | | `minio_cluster_health_drives_online_count` | Count of online drives in the cluster. <br><br>Type: gauge | | | `minio_cluster_health_drives_count` | Count of all drives in the cluster. <br><br>Type: gauge | | | `minio_cluster_health_nodes_offline_count` | Count of offline nodes in the cluster. <br><br>Type: gauge | | | `minio_cluster_health_nodes_online_count` | Count of online nodes in the cluster. <br><br>Type: gauge | | | `minio_cluster_health_capacity_raw_total_bytes` | Total cluster raw storage capacity in bytes. <br><br>Type: gauge | | | `minio_cluster_health_capacity_raw_free_bytes` | Total cluster raw storage free in bytes. <br><br>Type: gauge | | | `minio_cluster_health_capacity_usable_total_bytes` | Total cluster usable storage capacity in bytes. <br><br>Type: gauge | | | `minio_cluster_health_capacity_usable_free_bytes` | Total cluster usable storage free in bytes. <br><br>Type: gauge | | #### `/cluster/iam` | Name | Description | Labels | |-----------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------|--------| | `minio_cluster_iam_last_sync_duration_millis` | Last successful IAM data sync duration in milliseconds. <br><br>Type: counter | | | `minio_cluster_iam_plugin_authn_service_failed_requests_minute` | When plugin authentication is configured, returns failed requests count in the last full minute. <br><br>Type: counter | | | `minio_cluster_iam_plugin_authn_service_last_fail_seconds` | When plugin authentication is configured, returns time (in seconds) since the last failed request to the service. <br><br>Type: counter | | | `minio_cluster_iam_plugin_authn_service_last_succ_seconds` | When plugin authentication is configured, returns time (in seconds) since the last successful request to the service. <br><br>Type: counter | | | `minio_cluster_iam_plugin_authn_service_succ_avg_rtt_ms_minute` | When plugin authentication is configured, returns average round-trip time of successful requests in the last full minute. <br><br>Type: counter | | | `minio_cluster_iam_plugin_authn_service_succ_max_rtt_ms_minute` | When plugin authentication is configured, returns maximum round-trip time of successful requests in the last full minute. <br><br>Type: counter | | | `minio_cluster_iam_plugin_authn_service_total_requests_minute` | When plugin authentication is configured, returns total requests count in the last full minute. <br><br>Type: counter | | | `minio_cluster_iam_since_last_sync_millis` | Time (in milliseconds) since last successful IAM data sync. <br><br>Type: counter | | | `minio_cluster_iam_sync_failures` | Number of failed IAM data syncs since server start. <br><br>Type: counter | | | `minio_cluster_iam_sync_successes` | Number of successful IAM data syncs since server start. <br><br>Type: counter | | #### `/cluster/usage/buckets` | Name | Description | Labels | |-----------------------------------------------------------------|--------------------------------------------------------------------------------------|-------------------| | `minio_cluster_usage_buckets_since_last_update_seconds` | Time since last update of usage metrics in seconds. <br><br>Type: gauge | | | `minio_cluster_usage_buckets_total_bytes` | Total bucket size in bytes. <br><br>Type: gauge | `bucket` | | `minio_cluster_usage_buckets_objects_count` | Total object count in bucket. <br><br>Type: gauge | `bucket` | | `minio_cluster_usage_buckets_versions_count` | Total object versions count in bucket, including delete markers. <br><br>Type: gauge | `bucket` | | `minio_cluster_usage_buckets_delete_markers_count` | Total delete markers count in bucket. <br><br>Type: gauge | `bucket` | | `minio_cluster_usage_buckets_quota_total_bytes` | Total bucket quota in bytes. <br><br>Type: gauge | `bucket` | | `minio_cluster_usage_buckets_object_size_distribution` | Bucket object size distribution. <br><br>Type: gauge | `range`, `bucket` | | `minio_cluster_usage_buckets_object_version_count_distribution` | Bucket object version count distribution. <br><br>Type: gauge | `range`, `bucket` | #### `/cluster/usage/objects` | Name | Description | Labels | |----------------------------------------------------------|------------------------------------------------------------------------------------|---------| | `minio_cluster_usage_objects_since_last_update_seconds` | Time since last update of usage metrics in seconds. <br><br>Type: gauge | | | `minio_cluster_usage_objects_total_bytes` | Total cluster usage in bytes. <br><br>Type: gauge | | | `minio_cluster_usage_objects_count` | Total cluster objects count. <br><br>Type: gauge | | | `minio_cluster_usage_objects_versions_count` | Total cluster object versions count, including delete markers. <br><br>Type: gauge | | | `minio_cluster_usage_objects_delete_markers_count` | Total cluster delete markers count. <br><br>Type: gauge | | | `minio_cluster_usage_objects_buckets_count` | Total cluster buckets count. <br><br>Type: gauge | | | `minio_cluster_usage_objects_size_distribution` | Cluster object size distribution. <br><br>Type: gauge | `range` | | `minio_cluster_usage_objects_version_count_distribution` | Cluster object version count distribution. <br><br>Type: gauge | `range` | ### Debug metrics Standard Go runtime metrics from the [Prometheus Go Client base collector](https://github.com/prometheus/client_golang). | Path | Description | |-------------|---------------------| | `/debug/go` | Go runtime metrics. | ### ILM metrics Metrics about the MinIO ILM functionality. | Path | Description | |--------|---------------------------------------| | `/ilm` | Metrics related to ILM functionality. | #### `/ilm` | Name | Description | Labels | |-------------------------------------------------------|---------------------------------------------------------------------------------------------------|----------| | `minio_cluster_ilm_expiry_pending_tasks` | Number of pending ILM expiry tasks in the queue. <br><br>Type: gauge | `server` | | `minio_cluster_ilm_transition_active_tasks` | Number of active ILM transition tasks. <br><br>Type: gauge | `server` | | `minio_cluster_ilm_transition_pending_tasks` | Number of pending ILM transition tasks in the queue. <br><br>Type: gauge | `server` | | `minio_cluster_ilm_transition_missed_immediate_tasks` | Number of missed immediate ILM transition tasks. <br><br>Type: counter | `server` | | `minio_cluster_ilm_versions_scanned` | Total number of object versions checked for ILM actions since server start. <br><br>Type: counter | `server` | ### Logger webhook metrics Metrics about MinIO logger webhooks. | Path | Description | |-------------------|-------------------------------------| | `/logger/webhook` | Metrics related to logger webhooks. | #### `/logger/webhook` | Name | Description | Labels | |-----------------------------------------|---------------------------------------------------------------------|------------------------------| | `minio_logger_webhook_failed_messages` | Number of messages that failed to send. <br><br>Type: counter | `server`, `name`, `endpoint` | | `minio_logger_webhook_queue_length` | Webhook queue length. <br><br>Type: gauge | `server`, `name`, `endpoint` | | `minio_logger_webhook_total_message` | Total number of messages sent to this target. <br><br>Type: counter | `server`, `name`, `endpoint` | ### Notification metrics Metrics about the MinIO notification functionality. | Path | Description | |-----------------|------------------------------------------------| | `/notification` | Metrics related to notification functionality. | #### `/notification` | Name | Description | Labels | |-----------------------------------------------|-------------------------------------------------------------------------------------------------------|----------| | `minio_notification_current_send_in_progress` | Number of concurrent async Send calls active to all targets. <br><br>Type: counter | `server` | | `minio_notification_events_errors_total` | Total number of events that failed to send to the targets. <br><br>Type: counter | `server` | | `minio_notification_events_sent_total` | Total number of events sent to the targets. <br><br>Type: counter | `server` | | `minio_notification_events_skipped_total` | Number of events not sent to the targets due to the in-memory queue being full. <br><br>Type: counter | `server` | ### Replication metrics Metrics about MinIO site and bucket replication. | Path | Description | |-----------------------|----------------------------------------| | `/bucket/replication` | Metrics related to bucket replication. | | `/replication` | Metrics related to site replication. | #### `/replication` | Name | Description | Labels | |---------------------------------------------------|---------------------------------------------------------------------------------------------|----------| | `minio_replication_average_active_workers` | Average number of active replication workers. <br><br>Type: gauge | `server` | | `minio_replication_average_queued_bytes` | Average number of bytes queued for replication since server start. <br><br>Type: gauge | `server` | | `minio_replication_average_queued_count` | Average number of objects queued for replication since server start. <br><br>Type: gauge | `server` | | `minio_replication_average_data_transfer_rate` | Average replication data transfer rate in bytes/sec. <br><br>Type: gauge | `server` | | `minio_replication_current_active_workers` | Total number of active replication workers. <br><br>Type: gauge | `server` | | `minio_replication_current_data_transfer_rate` | Current replication data transfer rate in bytes/sec. <br><br>Type: gauge | `server` | | `minio_replication_last_minute_queued_bytes` | Number of bytes queued for replication in the last full minute. <br><br>Type: gauge | `server` | | `minio_replication_last_minute_queued_count` | Number of objects queued for replication in the last full minute. <br><br>Type: gauge | `server` | | `minio_replication_max_active_workers` | Maximum number of active replication workers seen since server start. <br><br>Type: gauge | `server` | | `minio_replication_max_queued_bytes` | Maximum number of bytes queued for replication since server start. <br><br>Type: gauge | `server` | | `minio_replication_max_queued_count` | Maximum number of objects queued for replication since server start. <br><br>Type: gauge | `server` | | `minio_replication_max_data_transfer_rate` | Maximum replication data transfer rate in bytes/sec since server start. <br><br>Type: gauge | `server` | | `minio_replication_recent_backlog_count` | Total number of objects seen in replication backlog in the last 5 minutes <br><br>Type: gauge | `server` | #### `/bucket/replication` | Name | Description | Labels | |---------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------|-------------------------------------------------------| | `minio_bucket_replication_last_hour_failed_bytes` | Total number of bytes on a bucket which failed to replicate at least once in the last hour. <br><br>Type: gauge | `bucket`, `server` | | `minio_bucket_replication_last_hour_failed_count` | Total number of objects on a bucket which failed to replicate in the last hour. <br><br>Type: gauge | `bucket`, `server` | | `minio_bucket_replication_last_minute_failed_bytes` | Total number of bytes on a bucket which failed at least once in the last full minute. <br><br>Type: gauge | `bucket`, `server` | | `minio_bucket_replication_last_minute_failed_count` | Total number of objects on a bucket which failed to replicate in the last full minute. <br><br>Type: gauge | `bucket`, `server` | | `minio_bucket_replication_latency_ms` | Replication latency on a bucket in milliseconds. <br><br>Type: gauge | `bucket`, `operation`, `range`, `targetArn`, `server` | | `minio_bucket_replication_proxied_delete_tagging_requests_total` | Number of DELETE tagging requests proxied to replication target. <br><br>Type: counter | `bucket`, `server` | | `minio_bucket_replication_proxied_get_requests_failures` | Number of failures in GET requests proxied to replication target. <br><br>Type: counter | `bucket`, `server` | | `minio_bucket_replication_proxied_get_requests_total` | Number of GET requests proxied to replication target. <br><br>Type: counter | `bucket`, `server` | | `minio_bucket_replication_proxied_get_tagging_requests_failures` | Number of failures in GET tagging requests proxied to replication target. <br><br>Type: counter | `bucket`, `server` | | `minio_bucket_replication_proxied_get_tagging_requests_total` | Number of GET tagging requests proxied to replication target. <br><br>Type: counter | `bucket`, `server` | | `minio_bucket_replication_proxied_head_requests_failures` | Number of failures in HEAD requests proxied to replication target. <br><br>Type: counter | `bucket`, `server` | | `minio_bucket_replication_proxied_head_requests_total` | Number of HEAD requests proxied to replication target. <br><br>Type: counter | `bucket`, `server` | | `minio_bucket_replication_proxied_put_tagging_requests_failures` | Number of failures in PUT tagging requests proxied to replication target. <br><br>Type: counter | `bucket`, `server` | | `minio_bucket_replication_proxied_put_tagging_requests_total` | Number of PUT tagging requests proxied to replication target. <br><br>Type: counter | `bucket`, `server` | | `minio_bucket_replication_sent_bytes` | Total number of bytes replicated to the target. <br><br>Type: counter | `bucket`, `server` | | `minio_bucket_replication_sent_count` | Total number of objects replicated to the target. <br><br>Type: counter | `bucket`, `server` | | `minio_bucket_replication_total_failed_bytes` | Total number of bytes failed to replicate at least once since server start. <br><br>Type: counter | `bucket`, `server` | | `minio_bucket_replication_total_failed_count` | Total number of objects that failed to replicate since server start. <br><br>Type: counter | `bucket`, `server` | | `minio_bucket_replication_proxied_delete_tagging_requests_failures` | Number of failures in DELETE tagging requests proxied to replication target. <br><br>Type: counter | `bucket`, `server` | ### Scanner metrics Metrics about the MinIO scanner. | Path | Description | |------------|---------------------------------------| | `/scanner` | Metrics related to the MinIO scanner. | #### `/scanner` | Name | Description | Labels | |--------------------------------------------|-----------------------------------------------------------------------------------|----------| | `minio_scanner_bucket_scans_finished` | Total number of bucket scans completed since server start. <br><br>Type: counter | `server` | | `minio_scanner_bucket_scans_started` | Total number of bucket scans started since server start. <br><br>Type: counter | `server` | | `minio_scanner_directories_scanned` | Total number of directories scanned since server start. <br><br>Type: counter | `server` | | `minio_scanner_last_activity_seconds` | Time elapsed (in seconds) since last scan activity. <br><br>Type: gauge | `server` | | `minio_scanner_objects_scanned` | Total number of unique objects scanned since server start. <br><br>Type: counter | `server` | | `minio_scanner_versions_scanned` | Total number of object versions scanned since server start. <br><br>Type: counter | `server` | ### System metrics Metrics about the MinIO process and the node. | Path | Description | |-----------------------------|----------------------------------------------------| | `/system/cpu` | Metrics about CPUs on the system. | | `/system/drive` | Metrics about drives on the system. | | `/system/network/internode` | Metrics about internode requests made by the node. | | `/system/memory` | Metrics about memory on the system. | | `/system/process` | Standard process metrics. | #### `/system/drive` | Name | Description | Labels | |------------------------------------------------|-----------------------------------------------------------------------------------------|--------------------------------------------------------------------| | `minio_system_drive_used_bytes` | Total storage used on a drive in bytes. <br><br>Type: gauge | `drive`, `set_index`, `drive_index`, `pool_index`, `server` | | `minio_system_drive_free_bytes` | Total storage free on a drive in bytes. <br><br>Type: gauge | `drive`, `set_index`, `drive_index`, `pool_index`, `server` | | `minio_system_drive_total_bytes` | Total storage available on a drive in bytes. <br><br>Type: gauge | `drive`, `set_index`, `drive_index`, `pool_index`, `server` | | `minio_system_drive_used_inodes` | Total used inodes on a drive. <br><br>Type: gauge | `drive`, `set_index`, `drive_index`, `pool_index`, `server` | | `minio_system_drive_free_inodes` | Total free inodes on a drive. <br><br>Type: gauge | `drive`, `set_index`, `drive_index`, `pool_index`, `server` | | `minio_system_drive_total_inodes` | Total inodes available on a drive. <br><br>Type: gauge | `drive`, `set_index`, `drive_index`, `pool_index`, `server` | | `minio_system_drive_timeout_errors_total` | Total timeout errors on a drive. <br><br>Type: counter | `drive`, `set_index`, `drive_index`, `pool_index`, `server` | | `minio_system_drive_io_errors_total` | Total I/O errors on a drive. <br><br>Type: counter | `drive`, `set_index`, `drive_index`, `pool_index`, `server` | | `minio_system_drive_availability_errors_total` | Total availability errors (I/O errors, timeouts) on a drive. <br><br>Type: counter | `drive`, `set_index`, `drive_index`, `pool_index`, `server` | | `minio_system_drive_waiting_io` | Total waiting I/O operations on a drive. <br><br>Type: gauge | `drive`, `set_index`, `drive_index`, `pool_index`, `server` | | `minio_system_drive_api_latency_micros` | Average last minute latency in µs for drive API storage operations. <br><br>Type: gauge | `drive`, `api`, `set_index`, `drive_index`, `pool_index`, `server` | | `minio_system_drive_offline_count` | Count of offline drives. <br><br>Type: gauge | `pool_index`, `server` | | `minio_system_drive_online_count` | Count of online drives. <br><br>Type: gauge | `pool_index`, `server` | | `minio_system_drive_count` | Count of all drives. <br><br>Type: gauge | `pool_index`, `server` | | `minio_system_drive_health` | Drive health (0 = offline, 1 = healthy, 2 = healing). <br><br>Type: gauge | `drive`, `set_index`, `drive_index`, `pool_index`, `server` | | `minio_system_drive_reads_per_sec` | Reads per second on a drive. <br><br>Type: gauge | `drive`, `set_index`, `drive_index`, `pool_index`, `server` | | `minio_system_drive_reads_kb_per_sec` | Kilobytes read per second on a drive. <br><br>Type: gauge | `drive`, `set_index`, `drive_index`, `pool_index`, `server` | | `minio_system_drive_reads_await` | Average time for read requests served on a drive. <br><br>Type: gauge | `drive`, `set_index`, `drive_index`, `pool_index`, `server` | | `minio_system_drive_writes_per_sec` | Writes per second on a drive. <br><br>Type: gauge | `drive`, `set_index`, `drive_index`, `pool_index`, `server` | | `minio_system_drive_writes_kb_per_sec` | Kilobytes written per second on a drive. <br><br>Type: gauge | `drive`, `set_index`, `drive_index`, `pool_index`, `server` | | `minio_system_drive_writes_await` | Average time for write requests served on a drive. <br><br>Type: gauge | `drive`, `set_index`, `drive_index`, `pool_index`, `server` | | `minio_system_drive_perc_util` | Percentage of time the disk was busy. <br><br>Type: gauge | `drive`, `set_index`, `drive_index`, `pool_index`, `server` | #### `/system/memory` | Name | Description | Labels | |----------------------------------|---------------------------------------------------------|----------| | `minio_system_memory_used` | Used memory on the node. <br><br>Type: gauge | `server` | | `minio_system_memory_used_perc` | Used memory percentage on the node. <br><br>Type: gauge | `server` | | `minio_system_memory_free` | Free memory on the node. <br><br>Type: gauge | `server` | | `minio_system_memory_total` | Total memory on the node. <br><br>Type: gauge | `server` | | `minio_system_memory_buffers` | Buffers memory on the node. <br><br>Type: gauge | `server` | | `minio_system_memory_cache` | Cache memory on the node. <br><br>Type: gauge | `server` | | `minio_system_memory_shared` | Shared memory on the node. <br><br>Type: gauge | `server` | | `minio_system_memory_available` | Available memory on the node. <br><br>Type: gauge | `server` | #### `/system/cpu` | Name | Description | Labels | |-------------------------------|---------------------------------------------------------|----------| | `minio_system_cpu_avg_idle` | Average CPU idle time. <br><br>Type: gauge | `server` | | `minio_system_cpu_avg_iowait` | Average CPU IOWait time. <br><br>Type: gauge | `server` | | `minio_system_cpu_load` | CPU load average 1min. <br><br>Type: gauge | `server` | | `minio_system_cpu_load_perc` | CPU load average 1min (percentage). <br><br>Type: gauge | `server` | | `minio_system_cpu_nice` | CPU nice time. <br><br>Type: gauge | `server` | | `minio_system_cpu_steal` | CPU steal time. <br><br>Type: gauge | `server` | | `minio_system_cpu_system` | CPU system time. <br><br>Type: gauge | `server` | | `minio_system_cpu_user` | CPU user time. <br><br>Type: gauge | `server` | #### `/system/network/internode` | Name | Description | Labels | |------------------------------------------------------|-------------------------------------------------------------------------------|------------------------| | `minio_system_network_internode_errors_total` | Total number of failed internode calls. <br><br>Type: counter | `server`, `pool_index` | | `minio_system_network_internode_dial_errors_total` | Total number of internode TCP dial timeouts and errors. <br><br>Type: counter | `server`, `pool_index` | | `minio_system_network_internode_dial_avg_time_nanos` | Average dial time of internodes TCP calls in nanoseconds. <br><br>Type: gauge | `server`, `pool_index` | | `minio_system_network_internode_sent_bytes_total` | Total number of bytes sent to other peer nodes. <br><br>Type: counter | `server`, `pool_index` | | `minio_system_network_internode_recv_bytes_total` | Total number of bytes received from other peer nodes. <br><br>Type: counter | `server`, `pool_index` | #### `/system/process` | Name | Description | Labels | |----------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------|----------| | `minio_system_process_locks_read_total` | Number of current READ locks on this peer. <br><br>Type: gauge | `server` | | `minio_system_process_locks_write_total` | Number of current WRITE locks on this peer. <br><br>Type: gauge | `server` | | `minio_system_process_cpu_total_seconds` | Total user and system CPU time spent in seconds. <br><br>Type: counter | `server` | | `minio_system_process_go_routine_total` | Total number of go routines running. <br><br>Type: gauge | `server` | | `minio_system_process_io_rchar_bytes` | Total bytes read by the process from the underlying storage system including cache, /proc/[pid]/io rchar. <br><br>Type: counter | `server` | | `minio_system_process_io_read_bytes` | Total bytes read by the process from the underlying storage system, /proc/[pid]/io read_bytes. <br><br>Type: counter | `server` | | `minio_system_process_io_wchar_bytes` | Total bytes written by the process to the underlying storage system including page cache, /proc/[pid]/io wchar. <br><br>Type: counter | `server` | | `minio_system_process_io_write_bytes` | Total bytes written by the process to the underlying storage system, /proc/[pid]/io write_bytes. <br><br>Type: counter | `server` | | `minio_system_process_start_time_seconds` | Start time for MinIO process in seconds since Unix epoch. <br><br>Type: gauge | `server` | | `minio_system_process_uptime_seconds` | Uptime for MinIO process in seconds. <br><br>Type: gauge | `server` | | `minio_system_process_file_descriptor_limit_total` | Limit on total number of open file descriptors for the MinIO Server process. <br><br>Type: gauge | `server` | | `minio_system_process_file_descriptor_open_total` | Total number of open file descriptors by the MinIO Server process. <br><br>Type: gauge | `server` | | `minio_system_process_syscall_read_total` | Total read SysCalls to the kernel. /proc/[pid]/io syscr. <br><br>Type: counter | `server` | | `minio_system_process_syscall_write_total` | Total write SysCalls to the kernel. /proc/[pid]/io syscw. <br><br>Type: counter | `server` | | `minio_system_process_resident_memory_bytes` | Resident memory size in bytes. <br><br>Type: gauge | `server` | | `minio_system_process_virtual_memory_bytes` | Virtual memory size in bytes. <br><br>Type: gauge | `server` | | `minio_system_process_virtual_memory_max_bytes` | Maximum virtual memory size in bytes. <br><br>Type: gauge | `server` |