influxdata / influxdata/telegraf

Lustre2 plugin proc/sys path names changed

Open
#19,661 1 comment 0 reactions 1 assignee Claimed by @srebhan View on GitHub
bug
Dominant language
Go
Stars
17.8k
Forks
5.8k
Avg merge
1d 20h
Merged PRs (30d)
161

Description

### Relevant telegraf.conf

```toml
[[inputs.lustre2]]
## An array of /proc globs to search for Lustre stats
## If not specified, the default will work on Lustre 2.12.x
##
# mgs_procfiles = [
# "/sys/fs/lustre/mgs/*/eviction_count",
# ]
# ost_procfiles = [
# "/proc/fs/lustre/obdfilter/*/stats",
# "/proc/fs/lustre/osd-ldiskfs/*/stats",
# "/proc/fs/lustre/obdfilter/*/job_stats",
# "/proc/fs/lustre/obdfilter/*/exports/*/stats",
# "/proc/fs/lustre/osd-ldiskfs/*/brw_stats",
# "/proc/fs/lustre/osd-zfs/*/brw_stats",
# "/sys/fs/lustre/odbfilter/*/eviction_count",
# ]
# mds_procfiles = [
# "/proc/fs/lustre/mdt/*/md_stats",
# "/proc/fs/lustre/mdt/*/job_stats",
# "/proc/fs/lustre/mdt/*/exports/*/stats",
# "/proc/fs/lustre/osd-ldiskfs/*/brw_stats",
# "/proc/fs/lustre/osd-zfs/*/brw_stats",
# "/sys/fs/lustre/mdt/*/eviction_count",
# ]
```

### Logs from Telegraf

```text
Nothing interesting here, because missing files get ignored
```

### System info

Telegraf 1.39.3, Rocky 9.8, Lustre 2.17.0

### Docker

Lustre changed the paths for the ost_procfiles and mdt_procfiles (again), so the defaults of the plugin don't work anymore.

Changes as of Lustre (2.17.0):

```
/proc/fs/lustre/mdt/*/exports/*/stats -> /sys/kernel/debug/lustre/mdt/*/exports/*/stats
/proc/fs/lustre/obdfilter/*/exports/*/stats -> /sys/kernel/debug/lustre/obdfilter/*/exports
/proc/fs/lustre/obdfilter/*/stats -> /sys/kernel/debug/lustre/osd-zfs/*/stats
/proc/fs/lustre/osd-ldiskfs/*/brw_stats -> /sys/kernel/debug/lustre/osd-ldiskfs/*/brw_stats
/proc/fs/lustre/osd-ldiskfs/*/stats -> /sys/kernel/debug/lustre/osd-ldiskfs/*/stats
/proc/fs/lustre/osd-zfs/*/brw_stats -> /sys/kernel/debug/lustre/osd-zfs/*/brw_stats
```

### Steps to reproduce

1. Run the lustre2 plugin with default settings

### Expected behavior

All metrics mentioned in the plugin documentation are collected.

### Actual behavior

The metrics from the renamed files are missing.

### Additional info

_No response_

Contributor guide

Open the contributing guide

Assessment

This issue has not been assessed yet.

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.