How to Set Up Disk Usage Alerts in HestiaCP

Prerequisites

Before setting up disk alerts, make sure you have:

• SSH access to your VPS
• Root or sudo privileges

Method 1: Configure Alert in HestiaCP

Edit Hestia config:

nano /usr/local/hestia/conf/hestia.conf

Set disk alert threshold:

DISK_ALERT='85'  # Alert at 85% usage

Save and restart Hestia:

systemctl restart hestia

Method 2: Create Custom Disk Alert Script

nano /usr/local/bin/disk-alert.sh

Add content:

#!/bin/bash
THRESHOLD=85
EMAIL="admin@example.com"

USAGE=$(df -h / | awk 'NR==2 {print $5}' | sed 's/%//')

if [ $USAGE -gt $THRESHOLD ]; then
    echo "Warning: Disk usage is at ${USAGE}% on $(hostname)" | mail -s "Disk Space Alert: $(hostname)" $EMAIL
fi

USAGE_HOME=$(df -h /home | awk 'NR==2 {print $5}' | sed 's/%//')
if [ $USAGE_HOME -gt $THRESHOLD ]; then
    echo "Warning: /home disk usage is at ${USAGE_HOME}% on $(hostname)" | mail -s "/home Disk Alert" $EMAIL
fi

Make executable:

chmod +x /usr/local/bin/disk-alert.sh

Add to cron (run hourly):

crontab -e

Add:

0 * * * * /usr/local/bin/disk-alert.sh

Check Disk Usage Per User (HestiaCP)

/usr/local/hestia/bin/v-list-users

Shows disk usage for each user.

Get Disk Alert via Telegram (Optional)

Add to script:

curl -s -X POST https://api.telegram.org/botYOUR_BOT_TOKEN/sendMessage -d chat_id=YOUR_CHAT_ID -d text="Disk Alert: ${USAGE}% used on $(hostname)"