MegaCLI MegaRAID
Plugin: go.d.plugin Module: megacli
Overview
Monitors the health of MegaCLI Hardware RAID by tracking the status of RAID adapters, physical drives, and backup batteries in your storage system.
It relies on the megacli
CLI tool but avoids directly executing the binary.
Instead, it utilizes ndsudo
, a Netdata helper specifically designed to run privileged commands securely within the Netdata environment.
This approach eliminates the need to use sudo
, improving security and potentially simplifying permission management.
Executed commands:
megacli -LDPDInfo -aAll -NoLog
megacli -AdpBbuCmd -aAll -NoLog
This collector is supported on all platforms.
This collector only supports collecting metrics from a single instance of this integration.
Default Behavior
Auto-Detection
This integration doesn't support auto-detection.
Limits
The default configuration for this integration does not impose any limits on data collection.
Performance Impact
The default configuration for this integration is not expected to impose a significant performance impact on the system.
Metrics
Metrics grouped by scope.
The scope defines the instance that the metric belongs to. An instance is uniquely identified by a set of labels.
Per adapter
These metrics refer to the MegaCLI Adapter.
Labels:
Label | Description |
---|---|
adapter_number | Adapter number |
Metrics:
Metric | Dimensions | Unit |
---|---|---|
megacli.adapter_health_state | optimal, degraded, partially_degraded, failed | state |
Per physical drive
These metrics refer to the MegaCLI Physical Drive.
Labels:
Label | Description |
---|---|
adapter_number | Adapter number |
wwn | World Wide Name |
slot_number | Slot number |
drive_position | Position (e.g. DiskGroup: 0, Span: 0, Arm: 2) |
drive_type | Type (e.g. SATA) |
Metrics:
Metric | Dimensions | Unit |
---|---|---|
megacli.phys_drive_media_errors_rate | media_errors | errors/s |
megacli.phys_drive_predictive_failures_rate | predictive_failures | failures/s |
Per backup battery unit
These metrics refer to the MegaCLI Backup Battery Unit.
Labels:
Label | Description |
---|---|
adapter_number | Adapter number |
battery_type | Battery type (e.g. BBU) |
Metrics:
Metric | Dimensions | Unit |
---|---|---|
megacli.bbu_relative_charge | charge | percentage |
megacli.bbu_recharge_cycles | recharge | cycles |
megacli.bbu_temperature | temperature | Celsius |
Alerts
The following alerts are available:
Alert name | On metric | Description |
---|---|---|
megacli_adapter_health_state | megacli.adapter_health_state | MegaCLI adapter ${label:adapter_number} is in the degraded state |
megacli_phys_drive_media_errors | megacli.phys_drive_media_errors | MegaCLI physical drive adapter ${label:adapter_number} slot ${label:slot_number} media errors |
megacli_phys_drive_predictive_failures | megacli.phys_drive_predictive_failures | MegaCLI physical drive (adapter ${label:adapter_number} slot ${label:slot_number}) predictive failures |
megacli_bbu_charge | megacli.bbu_charge | MegaCLI Backup Battery Unit (adapter ${label:adapter_number}) average charge over the last minute |
megacli_bbu_recharge_cycles | megacli.bbu_recharge_cycles | MegaCLI Backup Battery Unit (adapter ${label:adapter_number}) average charge over the last minute |
Setup
Prerequisites
No action required.
Configuration
File
The configuration file name for this integration is go.d/megacli.conf
.
You can edit the configuration file using the edit-config
script from the
Netdata config directory.
cd /etc/netdata 2>/dev/null || cd /opt/netdata/etc/netdata
sudo ./edit-config go.d/megacli.conf
Options
The following options can be defined globally: update_every.
Config options
Name | Description | Default | Required |
---|---|---|---|
update_every | Data collection frequency. | 10 | no |
timeout | megacli binary execution timeout. | 2 | no |
Examples
Custom update_every
Allows you to override the default data collection interval.
Config
jobs:
- name: megacli
update_every: 5 # Collect MegaCli Hardware RAID statistics every 5 seconds
Troubleshooting
Debug Mode
To troubleshoot issues with the megacli
collector, run the go.d.plugin
with the debug option enabled. The output
should give you clues as to why the collector isn't working.
Navigate to the
plugins.d
directory, usually at/usr/libexec/netdata/plugins.d/
. If that's not the case on your system, opennetdata.conf
and look for theplugins
setting under[directories]
.cd /usr/libexec/netdata/plugins.d/
Switch to the
netdata
user.sudo -u netdata -s
Run the
go.d.plugin
to debug the collector:./go.d.plugin -d -m megacli
Do you have any feedback for this page? If so, you can open a new issue on our netdata/learn repository.