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 obtained 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_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_objects_size_distribution	Distribution of object sizes across a cluster
minio_cluster_objects_version_distribution	Distribution of object sizes across a cluster
minio_cluster_usage_object_total	Total number of objects in a cluster
minio_cluster_usage_total_bytes	Total cluster usage in bytes
minio_cluster_usage_version_total	Total number of versions (includes delete marker) in a cluster
minio_cluster_usage_deletemarker_total	Total number of delete markers in a cluster
minio_cluster_usage_total_bytes	Total cluster usage in bytes
minio_cluster_buckets_total	Total number of buckets in the cluster
minio_cluster_drive_offline_total	Total drives offline in this cluster.
minio_cluster_drive_online_total	Total drives online in this cluster.
minio_cluster_drive_total	Total drives in this cluster.
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_cluster_write_quorum	Maximum write quorum across all pools and sets
minio_cluster_health_status	Get current cluster health status
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.
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_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 canceled by the client.
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_requests_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.
minio_node_drive_free_bytes	Total storage available on a drive.
minio_node_drive_free_inodes	Total free inodes.
minio_node_drive_latency_us	Average last minute latency in µs for drive API storage operations.
minio_node_drive_offline_total	Total drives offline in this node.
minio_node_drive_online_total	Total drives online in this node.
minio_node_drive_total	Total drives in this node.
minio_node_drive_total_bytes	Total storage on a drive.
minio_node_drive_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.
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.

List of metrics exported per bucket level

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

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

Name	Description
minio_bucket_objects_size_distribution	Distribution of object sizes in the bucket, includes label for the bucket name.
minio_bucket_objects_version_distribution	Distribution of object sizes in a bucket, by number of versions
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_version_total	Total number of versions (includes delete marker)
minio_bucket_usage_deletemarker_total	Total number of delete markers.
minio_bucket_usage_total_bytes	Total bucket size in bytes.
minio_bucket_requests_4xx_errors_total	Total number of S3 requests with (4xx) errors on a bucket.
minio_bucket_requests_5xx_errors_total	Total number of S3 requests with (5xx) errors on a bucket.
minio_bucket_requests_inflight_total	Total number of S3 requests currently in flight on a bucket.
minio_bucket_requests_total	Total number of S3 requests on a bucket.
minio_bucket_requests_canceled_total	Total number S3 requests canceled by the client.
minio_bucket_requests_ttfb_seconds_distribution	Distribution of time to first byte across API calls per bucket.