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<!--
title: "MegaRAID controller monitoring with Netdata"
custom_edit_url: https://github.com/netdata/netdata/edit/master/collectors/python.d.plugin/megacli/README.md
sidebar_label: "MegaRAID controllers"
-->
# MegaRAID controller monitoring with Netdata
Collects adapter, physical drives and battery stats.
## Requirements
Uses the `megacli` program, which can only be executed by root. It uses
`sudo` and assumes that it is configured such that the `netdata` user can
execute `megacli` as root without password.
Add to `sudoers`:
```
netdata ALL=(root) NOPASSWD: /path/to/megacli
```
To grab stats it executes:
- `sudo -n megacli -LDPDInfo -aAll`
- `sudo -n megacli -AdpBbuCmd -a0`
It produces:
1. **Adapter State**
2. **Physical Drives Media Errors**
3. **Physical Drives Predictive Failures**
4. **Battery Relative State of Charge**
5. **Battery Cycle Count**
## Configuration
**megacli** is disabled by default. Should be explicitly enabled in `python.d.conf`.
```yaml
megacli: yes
```
Edit the `python.d/megacli.conf` configuration file using `edit-config` from the Netdata [config
directory](/docs/configure/nodes.md), which is typically at `/etc/netdata`.
```bash
cd /etc/netdata # Replace this path with your Netdata config directory, if different
sudo ./edit-config python.d/megacli.conf
```
Battery stats disabled by default. To enable them, modify `megacli.conf`.
```yaml
do_battery: yes
```
---
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