Metric exporters

SaunaFS Metrics

Metrics reported by exporters deployed via SaunaFS Operator use following labels:

Label	Description
`cluster_namespace`	SaunaFS Cluster's namespace. Set for all metrics related to SaunaFS Components.
`cluster_name`	SaunaFS Cluster's name. Set for all metrics related to SaunaFS Components.
`volume_name`	SaunaFS Chunk/Metadata volume name. Set for all Chunk/Metadata volume metrics.
`volume_evicting`	Whether SaunaFS Chunk volume is marked for eviction (removal). Set for SaunaFS Chunk Volume metrics.
`volume_damaged`	Whether SaunaFS Chunk volume is damaged. Set for SaunaFS Chunk Volume metrics.

Following metrics are exported by SaunaFS Operator for each SaunaFS Cluster:

Metric	Description
`saunafs_operator_cluster_reconciliation_timings`	Histogram of reconciliation timings for a given cluster in seconds.
`saunafs_operator_cluster_metadataservers_expected`	Count of expected deployed Metadata Servers.
`saunafs_operator_cluster_metadataservers_current`	Count of currently deployed Metadata Servers.
`saunafs_operator_cluster_chunkservers_expected`	Count of expected deployed Chunk Servers.
`saunafs_operator_cluster_chunkservers_current`	Count of currently deployed Chunk Servers.

Following metrics are exported by Metadata Server Metrics Exporter for it's SaunaFS Metadata Volume:

Metric	Description
`saunafs_metadata_volume_metadata_version`	Version of metadata stored on the volume.
`saunafs_metadata_volume_status`	Status of the server running with the volume. Values: 1 = Master; 2 = Connected Shadow; 3 = Disconnected Shadow.

Following metrics are exported by Metadata Server Metrics Exporter for it's SaunaFS Metadata Volume when corresponding metadata server is a leader:

Metric	Description
`saunafs_cluster_memory_usage_bytes`	Memory usage.
`saunafs_cluster_space_total_bytes`	Total space in the cluster.
`saunafs_cluster_space_available_bytes`	Available space in the cluster.
`saunafs_cluster_space_trash_bytes`	Space in the cluster used by trash.
`saunafs_cluster_space_reserved_bytes`	Reserved space in the cluster.
`saunafs_cluster_filesystem_objects_total`	Count of filesystem objects in the cluster.
`saunafs_cluster_files_total`	Count of files in the cluster.
`saunafs_cluster_files_reserved_total`	Count of reserved files in the cluster.
`saunafs_cluster_files_trash_total`	Count of trashed files in the cluster.
`saunafs_cluster_dirs_total`	Count of directories in the cluster.
`saunafs_cluster_chunks_total`	Count of chunks in the cluster.
`saunafs_cluster_chunks_copies`	Count of chunk copies in the cluster.
`saunafs_cluster_chunks_safe_total`	Count of safe chunks in the cluster.
`saunafs_cluster_chunks_endangered_total`	Count of endangered chunks in the cluster.
`saunafs_cluster_chunks_lost_total`	Count of lost chunks in the cluster.

Following metrics are exported by Chunk Server Metrics Exporter for it's SaunaFS Chunk Volumes:

Metric	Description
`saunafs_chunk_volume_chunks_total`	Count of chunks stored on the volume.
`saunafs_chunk_volume_read_bytes`	Bytes read in the last minute. Note that this value is re-calculated only once every minute.
`saunafs_chunk_volume_written_bytes`	Bytes written in the last minute. Note that this value is re-calculated only once every minute.
`saunafs_chunk_volume_read_bytes_per_second`	Bytes read per second (when reading) in the last minute. Note that this value is re-calculated only once every minute.
`saunafs_chunk_volume_written_bytes_per_second`	Bytes written per second (when writing) in the last minute. Note that this value is re-calculated only once every minute.
`saunafs_chunk_volume_operations_read_total`	Count of read operations in the last minute. Note that this value is re-calculated only once every minute.
`saunafs_chunk_volume_operations_write_total`	Count of write operations in the last minute. Note that this value is re-calculated only once every minute.
`saunafs_chunk_volume_space_used_bytes`	Used space on the volume.
`saunafs_chunk_volume_space_total_bytes`	Total space on the volume.

Elector exports following metrics:

Metric	Description
`saunafs_elector_term`	Incrementing number used to coordinate leader elections and maintain consistency among distributed nodes.
`saunafs_elector_metadata_version`	SaunaFS metadata version observed by elector. Is updated only on election.
`saunafs_elector_role`	Current elector role. 0 for follower, 1 for candidate, 2 for leader, 3 for custodian.