minio/docs/metrics/prometheus/list.md

# List of metrics reported cluster wide

Each metric includes a label for the server that calculated the metric.
Each metric has a label for the server that generated the metric.

These metrics can be from any MinIO server once per collection.

| Name  | Description |
|:------|:------------|
| `minio_audit_failed_messages` | Total number of messages that failed to send since start. |
| `minio_audit_target_queue_length` | Number of unsent messages in queue for target. |
| `minio_audit_total_messages` | Total number of messages sent since start. |
| `minio_bucket_objects_size_distribution` | Distribution of object sizes in the bucket, includes label for the bucket name. |
| `minio_bucket_quota_total_bytes` | Total bucket quota size in bytes. |
| `minio_bucket_replication_failed_bytes` | Total number of bytes failed at least once to replicate. |
| `minio_bucket_replication_failed_count` | Total number of objects which failed replication. |
| `minio_bucket_replication_latency_ms` | Replication latency in milliseconds. |
| `minio_bucket_replication_received_bytes` | Total number of bytes replicated to this bucket from another source bucket. |
| `minio_bucket_replication_sent_bytes` | Total number of bytes replicated to the target bucket. |
| `minio_bucket_traffic_received_bytes` | Total number of S3 bytes received for this bucket. |
| `minio_bucket_traffic_sent_bytes` | Total number of S3 bytes sent for this bucket. |
| `minio_bucket_usage_object_total` | Total number of objects. |
| `minio_bucket_usage_total_bytes` | Total bucket size in bytes. |
| `minio_cache_hits_total` | Total number of drive cache hits. |
| `minio_cache_missed_total` | Total number of drive cache misses. |
| `minio_cache_sent_bytes` | Total number of bytes served from cache. |
| `minio_cache_total_bytes` | Total size of cache drive in bytes. |
| `minio_cache_usage_info` | Total percentage cache usage, value of 1 indicates high and 0 low, label level is set as well. |
| `minio_cache_used_bytes` | Current cache usage in bytes. |
| `minio_cluster_capacity_raw_free_bytes` | Total free capacity online in the cluster. |
| `minio_cluster_capacity_raw_total_bytes` | Total capacity online in the cluster. |
| `minio_cluster_capacity_usable_free_bytes` | Total free usable capacity online in the cluster. |
| `minio_cluster_capacity_usable_total_bytes` | Total usable capacity online in the cluster. |
| `minio_cluster_disk_offline_total` | Total drives offline. |
| `minio_cluster_disk_online_total` | Total drives online. |
| `minio_cluster_disk_total` | Total drives. |
| `minio_cluster_ilm_transitioned_bytes` | Total bytes transitioned to a tier. |
| `minio_cluster_ilm_transitioned_objects` | Total number of objects transitioned to a tier. |
| `minio_cluster_ilm_transitioned_versions` | Total number of versions transitioned to a tier. |
| `minio_cluster_kms_online` | Reports whether the KMS is online (1) or offline (0). |
| `minio_cluster_kms_request_error` | Number of KMS requests that failed due to some error. (HTTP 4xx status code). |
| `minio_cluster_kms_request_failure` | Number of KMS requests that failed due to some internal failure. (HTTP 5xx status code). |
| `minio_cluster_kms_request_success` | Number of KMS requests that succeeded. |
| `minio_cluster_kms_uptime` | The time the KMS has been up and running in seconds. |
| `minio_cluster_nodes_offline_total` | Total number of MinIO nodes offline. |
| `minio_cluster_nodes_online_total` | Total number of MinIO nodes online. |
| `minio_heal_objects_errors_total` | Objects for which healing failed in current self healing run. |
| `minio_heal_objects_heal_total` | Objects healed in current self healing run. |
| `minio_heal_objects_total` | Objects scanned in current self healing run. |
| `minio_heal_time_last_activity_nano_seconds` | Time elapsed (in nano seconds) since last self healing activity. This is set to -1 until initial self heal activity. |
| `minio_inter_node_traffic_dial_avg_time` | Average time of internodes TCP dial calls. |
| `minio_inter_node_traffic_dial_errors` | Total number of internode TCP dial timeouts and errors. |
| `minio_inter_node_traffic_errors_total` | Total number of failed internode calls. |
| `minio_inter_node_traffic_received_bytes` | Total number of bytes received from other peer nodes. |
| `minio_inter_node_traffic_sent_bytes` | Total number of bytes sent to the other peer nodes. |
| `minio_minio_update_percent` | Total percentage cache usage. |
| `minio_node_disk_free_bytes` | Total storage available on a drive. |
| `minio_node_disk_free_inodes` | Total free inodes. |
| `minio_node_disk_latency_us` | Average last minute latency in µs for drive API storage operations. |
| `minio_node_disk_offline_total` | Total drives offline. |
| `minio_node_disk_online_total` | Total drives online. |
| `minio_node_disk_total` | Total drives. |
| `minio_node_disk_total_bytes` | Total storage on a drive. |
| `minio_node_disk_used_bytes` | Total storage used on a drive. |
| `minio_node_file_descriptor_limit_total` | Limit on total number of open file descriptors for the MinIO Server process. |
| `minio_node_file_descriptor_open_total` | Total number of open file descriptors by the MinIO Server process. |
| `minio_node_go_routine_total` | Total number of go routines running. |
| `minio_node_iam_last_sync_duration_millis` | Last successful IAM data sync duration in milliseconds. |
| `minio_node_iam_since_last_sync_millis` | Time (in milliseconds) since last successful IAM data sync. This is set to 0 until the first sync after server start. |
| `minio_node_iam_sync_failures` | Number of failed IAM data syncs since server start. |
| `minio_node_iam_sync_successes` | Number of successful IAM data syncs since server start. |
| `minio_node_ilm_expiry_pending_tasks` | Number of pending ILM expiry tasks in the queue. |
| `minio_node_ilm_transition_active_tasks` | Number of active ILM transition tasks. |
| `minio_node_ilm_transition_pending_tasks` | Number of pending ILM transition tasks in the queue. |
| `minio_node_ilm_versions_scanned` | Total number of object versions checked for ilm actions since server start. |
| `minio_node_io_rchar_bytes` | Total bytes read by the process from the underlying storage system including cache, /proc/[pid]/io rchar. |
| `minio_node_io_read_bytes` | Total bytes read by the process from the underlying storage system, /proc/[pid]/io read_bytes. |
| `minio_node_io_wchar_bytes` | Total bytes written by the process to the underlying storage system including page cache, /proc/[pid]/io wchar. |
| `minio_node_io_write_bytes` | Total bytes written by the process to the underlying storage system, /proc/[pid]/io write_bytes. |
| `minio_node_process_cpu_total_seconds` | Total user and system CPU time spent in seconds. |
| `minio_node_process_resident_memory_bytes` | Resident memory size in bytes. |
| `minio_node_process_starttime_seconds` | Start time for MinIO process per node, time in seconds since Unix epoc. |
| `minio_node_process_uptime_seconds` | Uptime for MinIO process per node in seconds. |
| `minio_node_scanner_bucket_scans_finished` | Total number of bucket scans finished since server start. |
| `minio_node_scanner_bucket_scans_started` | Total number of bucket scans started since server start. |
| `minio_node_scanner_directories_scanned` | Total number of directories scanned since server start. |
| `minio_node_scanner_objects_scanned` | Total number of unique objects scanned since server start. |
| `minio_node_scanner_versions_scanned` | Total number of object versions scanned since server start. |
| `minio_node_syscall_read_total` | Total read SysCalls to the kernel. /proc/[pid]/io syscr. |
| `minio_node_syscall_write_total` | Total write SysCalls to the kernel. /proc/[pid]/io syscw. |
| `minio_notify_current_send_in_progress` | Number of concurrent async Send calls active to all targets. |
| `minio_notify_target_queue_length` | Number of unsent notifications in queue for target. |
| `minio_s3_requests_4xx_errors_total` | Total number S3 requests with (4xx) errors. |
| `minio_s3_requests_5xx_errors_total` | Total number S3 requests with (5xx) errors. |
| `minio_s3_requests_canceled_total` | Total number S3 requests that were canceled from the client while processing. |
| `minio_s3_requests_errors_total` | Total number S3 requests with (4xx and 5xx) errors. |
| `minio_s3_requests_incoming_total` | Volatile number of total incoming S3 requests. |
| `minio_s3_requests_inflight_total` | Total number of S3 requests currently in flight. |
| `minio_s3_requests_rejected_auth_total` | Total number S3 requests rejected for auth failure. |
| `minio_s3_requests_rejected_header_total` | Total number S3 requests rejected for invalid header. |
| `minio_s3_requests_rejected_invalid_total` | Total number S3 invalid requests. |
| `minio_s3_requests_rejected_timestamp_total` | Total number S3 requests rejected for invalid timestamp. |
| `minio_s3_requests_total` | Total number S3 requests. |
| `minio_s3_requests_waiting_total` | Number of S3 requests in the waiting queue. |
| `minio_s3_time_ttfb_seconds_distribution` | Distribution of the time to first byte across API calls. |
| `minio_s3_traffic_received_bytes` | Total number of s3 bytes received. |
| `minio_s3_traffic_sent_bytes` | Total number of s3 bytes sent. |
| `minio_software_commit_info` | Git commit hash for the MinIO release. |
| `minio_software_version_info` | MinIO Release tag for the server. |
| `minio_usage_last_activity_nano_seconds` | Time elapsed (in nano seconds) since last scan activity. This is set to 0 until first scan cycle. |