Megacli Datadog Check

Check your LSI MegaRAID adapter with datadog.

Goals

Monitor your LSI MegaRAID card with datadog.

Prerequisites

megacli (see Leo's PPA for trusty and friends)
and entry in sudoers so that datado can use megacli (e.g. something like dd-agent ALL = (root) NOPASSWD: /usr/sbin/megacli)

Usage

Put megaraid.py in datadog's checks.d directory, and megaraid.yaml in datadog's conf.d directory (usually, these directories lies in /etc/dd-agent).

The only global configuration value is megacli_path, which, surprisingly, set the full path to the megabli binary.

init_config:
  megacli_path: /usr/sbin/megacli
  adapter_events: 1
  disk_events: 0

instances:
  - adapter: 0
    adapter_events: 0
    disk_events: 1

What you get

Adapter level

At the adapter level, events are emitted if the adapter state is not 'Optimal'. Note that the check is stateless, which means events will be triggered at each check. You can disable adapter check setting adapter_events to 1 in the global or the adapter section in the config file.

Drives

At the drive level, those metrics are reported (see megacli -pdlist -aALL):

Media Error Count
Other Error Count
Predictive Failure Count
Drive has flagged a S.M.A.R.T alert (0 is good)
Firmware state (1 is good)
Drive Temperature

The following events are also reported:

Drive has flagged a S.M.A.R.T alert (when megacli reports 'Yes')
Firmware state (when 'Online' or 'Spun Up' are not found in firmware report)

They can be disabled with the disk_events config flag (globally, or per-instance).

Misc

See the accompanying megaraid and datadog-agent Ansible roles.

leucos / datadog-megaraid