# Netdata host file integrity check with statsd

1. Check statsd plugin status
  Statsd is enabled by default, if not enable it inside, `/etc/netdata/netdata.conf` under [statsd] section. Default port is 8125.
  
2. Create config file `/etc/netdata/statsd.d/file.conf` with below content
Run ` # mkdir -p /etc/netdata/statsd.d/`

Run `# vi /etc/netdata/statsd.d/file.conf`
```
[app]
  name = filecheckapp
  metrics = hosts resolve
  private charts = yes

[file_chart1]
  title = Files Integrity Check
  family = file_family
  context = filecheckapp.filecheck
  units = filecheck
  type = area
  dimension = hosts 'hosts me' last 1 1
  dimension = resolve 'resolve me' last 1 1
```

3. Create dir to store user scripts 

Run `# mkdir -p /etc/netdata/scripts/`

4. Run  `# vi /etc/netdata/scripts/etc_host_check.sh`

Add content
```
#!/bin/bash
rm original_host
wget <GIT_URL> -O original_host
base_md5=`md5sum original_host  | cut -d' ' -f1`
server_md5=`md5sum /etc/hosts | cut -d' ' -f1`
flag=`cat /etc/netdata/scripts/flag.txt`

if [[ $base_md5 == $server_md5 ]] && [[ $flag == 0 ]];
	then
		echo "No change Required"

elif [[ $base_md5 == $server_md5 ]] && [[ $flag == 1 ]];
	then
		echo "OK : Host has valid /etc/hosts conf !!!"
		echo 0 > /etc/netdata/scripts/flag.txt; echo "hosts:-1|g" | nc -w 1 -u localhost 8125;
elif [[ $base_md5 != $server_md5 ]] && [[ $flag == 0 ]];
	then
	echo 1 > /etc/netdata/scripts/flag.txt;
	echo "WARNING: /etc/hosts file got changed."
	echo "hosts:+1|g" | nc -w 1 -u localhost 8125;
else
	echo "Do nothig.."
```
5. Change  `localhost` to your `netdata server ip` in above script.
6. Change  <GIT_URL> to your original conf file. 
7. Run `# mkdir -p /etc/netdata/scripts/` 

Run ` # touch  /etc/netdata/scripts/flag.txt` 

Run `# echo 0 > /etc/netdata/scripts/flag.txt`

8. Now set cronjob to run script every 1 min

Run `# crontab -e`

Add `*       *       *       *       *       run-parts /etc/netdata/scripts/etc_host_check.sh`

9. Now you must be able to gauge metrics under netdata statsd.