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Add drive metrics in metrics-v3 (#19452)

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Add following metrics:

- used_inodes
- total_inodes
- healing
- online
- reads_per_sec
- reads_kb_per_sec
- reads_await
- writes_per_sec
- writes_kb_per_sec
- writes_await
- perc_util

To be able to calculate the `per_sec` values, we capture the IOStats-related 
data in the beginning (along with the time at which they were captured), 
and compare them against the current values subsequently. This is because 
dividing by "time since server uptime." doesn't work in k8s environments.
This commit is contained in:
Shireesh Anjal
2024-04-11 23:16:34 +05:30
committed by GitHub
parent 074febd9e1
commit 08d3d06a06
5 changed files with 226 additions and 30 deletions
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11
docs/metrics/v3.md
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@@ -105,7 +105,9 @@ The standard metrics groups for ProcessCollector and GoCollector are not shown b
| `minio_system_drive_used_bytes` | `gauge` | Total storage used on a drive in bytes | `drive,set_index,drive_index,pool_index,server` |
| `minio_system_drive_free_bytes` | `gauge` | Total storage free on a drive in bytes | `drive,set_index,drive_index,pool_index,server` |
| `minio_system_drive_total_bytes` | `gauge` | Total storage available on a drive in bytes | `drive,set_index,drive_index,pool_index,server` |
| `minio_system_drive_used_inodes` | `gauge` | Total used inodes on a drive | `drive,set_index,drive_index,pool_index,server` |
| `minio_system_drive_free_inodes` | `gauge` | Total free inodes on a drive | `drive,set_index,drive_index,pool_index,server` |
| `minio_system_drive_total_inodes` | `gauge` | Total inodes available on a drive | `drive,set_index,drive_index,pool_index,server` |
| `minio_system_drive_timeout_errors_total` | `counter` | Total timeout errors on a drive | `drive,set_index,drive_index,pool_index,server` |
| `minio_system_drive_availability_errors_total` | `counter` | Total availability errors (I/O errors, permission denied and timeouts) on a drive | `drive,set_index,drive_index,pool_index,server` |
| `minio_system_drive_waiting_io` | `gauge` | Total waiting I/O operations on a drive | `drive,set_index,drive_index,pool_index,server` |
@@ -113,6 +115,15 @@ The standard metrics groups for ProcessCollector and GoCollector are not shown b
| `minio_system_drive_offline_count` | `gauge` | Count of offline drives | `pool_index,server` |
| `minio_system_drive_online_count` | `gauge` | Count of online drives | `pool_index,server` |
| `minio_system_drive_count` | `gauge` | Count of all drives | `pool_index,server` |
| `minio_system_drive_healing` | `gauge` | Is it healing? | `drive,set_index,drive_index,pool_index,server` |
| `minio_system_drive_online` | `gauge` | Is it online? | `drive,set_index,drive_index,pool_index,server` |
| `minio_system_drive_reads_per_sec` | `gauge` | Reads per second on a drive | `drive,set_index,drive_index,pool_index,server` |
| `minio_system_drive_reads_kb_per_sec` | `gauge` | Kilobytes read per second on a drive | `drive,set_index,drive_index,pool_index,server` |
| `minio_system_drive_reads_await` | `gauge` | Average time for read requests served on a drive | `drive,set_index,drive_index,pool_index,server` |
| `minio_system_drive_writes_per_sec` | `gauge` | Writes per second on a drive | `drive,set_index,drive_index,pool_index,server` |
| `minio_system_drive_writes_kb_per_sec` | `gauge` | Kilobytes written per second on a drive | `drive,set_index,drive_index,pool_index,server` |
| `minio_system_drive_writes_await` | `gauge` | Average time for write requests served on a drive | `drive,set_index,drive_index,pool_index,server` |
| `minio_system_drive_perc_util` | `gauge` | Percentage of time the disk was busy | `drive,set_index,drive_index,pool_index,server` |
### `/system/network/internode`