Monitoring & Performance

03/12/2026 9:39 PM
- Troubleshooting & Maintenance

Monitoring your server's performance is essential to ensure stability and prevent resource overuse. Nubius Solutions offers 360 Monitoring as a reliable monitoring solution. Additionally, for customers who prefer a free, manual option, a Simple Resource Monitoring Script can be used.

Option 1: 360 Monitoring for Servers (Recommended)

360 Monitoring provides real-time insights into your server’s health, including:

CPU, RAM, and Disk Usage Monitoring
Real-time Alerts for unusual spikes in usage
Comprehensive Reports for performance trends

How to Get 360 Monitoring

Log in to the Nubius Customer Portal.
Navigate to Store → 360 Monitoring or go directly to https://portal.nubius.io/store/360monitoring
Select a monitoring plan and complete the order.
Follow the instructions in the setup email to configure your monitoring dashboard.

For more details, refer to the 360 Monitoring Documentation.

Option 2: Manual Monitoring with a Resource Monitoring Script

For those who do not wish to purchase monitoring, a simple script can be set up to track performance and send email alerts.

What This Script Does:

Checks CPU Load, Memory Usage, and Disk Space.
Sends an email alert if usage exceeds predefined thresholds.
Runs at scheduled intervals via cron jobs.

Installing the Monitoring Script

Log in to your server via SSH as root.
Navigate to the root directory:
```
cd /root
```
Create a new script file:
```
vim load-alert.sh
```

Copy and paste the script below into the file:

#-------------- COPY BELOW HERE ---------------------------------------#
#!/bin/bash
#
# Script to notify admin user if their eApps VPS load has crossed a
# certain limit. It will send an email notification to the designated 
# admin user.  
#
# This script is based on one found at http://bash.cyberciti.biz/ and 
# modified to fit the needs of eApps customers. 
#
# This is a free script under GNU GPL version 2.0 or above.
# http://www.gnu.org/licenses/gpl-3.0.txt
# This software is offered AS IS, with NO WARRANTIES 
#
#----------------------------------------------------------------------#
#
# CONFIGURATION 
#
# The values for NOTIFY, NOTIFY2 and EMAIL are the only values that should be
# changed. Change NOTIFY to the load average you want to alert on. Change 
# NOTIFY2 to the memory usage you want to alert on. Change EMAIL to the 
# admin e-mail address that the alerts should go to. 
#
# Set load average threshold. A value of 1.00 equals 100% of your CPU 

NOTIFY="0.00"

# Memory usage threshold. Set value in KB (Kilobytes)

NOTIFY2="000000"

#
# Set e-mail address to send alerts to

EMAIL="user@example.com"

#
# Subject line for the e-mail alerts
 
SUBJECT="Alert $(hostname) load average $(date)"

#
#----------------------------------------------------------------------#
# 
OS="$(uname)"
TRUE="1"
        TEMPFILE="$(mktemp)"
        FTEXT='load average:'

# get first 5 min load
F5M="$(uptime | awk -F "$FTEXT" '{ print $2 }' | cut -d, -f1)"

# 10 min
F10M="$(uptime | awk -F "$FTEXT" '{ print $2 }' | cut -d, -f2)"

# 15 min
F15M="$(uptime | awk -F "$FTEXT" '{ print $2 }' | cut -d, -f3)"

# Free memory 
FMEM="$(grep "^MemFree" /proc/meminfo|awk '{print $2}')"
#
#----------------------------------------------------------------------#
#
# E-MAIL MESSAGE
#

echo "Load average crossed specified limit: $NOTIFY" >> $TEMPFILE
echo "Hostname: $(hostname)" >> $TEMPFILE
echo "Local Date & Time : $(date)" >> $TEMPFILE
echo "Memory usage crossed specified limit: $NOTIFY2 kb" >> $TEMPFILE

# Look if it crossed limit
# compare it with last 15 min load average and last memory average
RESULT=$(echo "$F15M >= $NOTIFY" | bc)
RESULT2=$(echo "$FMEM <= $NOTIFY2" | bc)

# if so send an email
if [ "$RESULT" == "$TRUE" ]; then
    echo "-------------------------------------------" >> $TEMPFILE
    echo "System snapshot from top:" >> $TEMPFILE
    echo "-------------------------------------------" >> $TEMPFILE
    top -b -n1 >> $TEMPFILE
    echo "-------------------------------------------" >> $TEMPFILE
    echo "System snapshot for memory:" >> $TEMPFILE
    echo "-------------------------------------------" >> $TEMPFILE
    free -m >> $TEMPFILE
    echo "Process list by memory usage:" >> $TEMPFILE
    echo "-------------------------------------------" >> $TEMPFILE
    ps -e -orss=,args= | sort -b -k1,1n >> $TEMPFILE
    echo "-------------------------------------------" >> $TEMPFILE
    echo "Disk space usage:" >> $TEMPFILE
    echo "-------------------------------------------" >> $TEMPFILE
    df -h >> $TEMPFILE

        mail -s "$SUBJECT" "$EMAIL" < $TEMPFILE

fi

#
#----------------------------------------------------------------------#
#
# CLEAN UP 
# 

rm -f $TEMPFILE

#
#--------------- COPY ABOVE HERE --------------------------------------#

Save and exit the file (ESC + :wq in vim).
Make the script executable:
```
chmod 755 load-alert.sh
```

Setting Up Automated Monitoring (Cron Job)

Open the cron editor:
```
crontab -e
```

Add a line to run the script every 5 minutes:

*/5 * * * * /root/load-alert.sh > /dev/null 2>&1

Save and exit the file.

Modifying the Script for Custom Alerts

To change the CPU threshold, modify NOTIFY="0.00".
To change the memory threshold, modify NOTIFY2="000000".
To send alerts to multiple emails, add multiple addresses separated by spaces:
```
mail -s "$SUBJECT" "$EMAIL" "otheruser@example.com" < $TEMPFILE
```

Testing the Script

To manually test if the script is working:

/root/load-alert.sh

This should generate an email if thresholds are exceeded.

Disabling or Removing the Script

To disable the script, remove the cron job:

crontab -e  # Remove the line running load-alert.sh

To delete the script completely:

rm -rf /root/load-alert.sh

Which Option Should You Choose?

If you need real-time alerts, dashboards, and professional monitoring, we recommend 360 Monitoring.
If you prefer a free, basic option, the manual monitoring script can help track performance but requires technical setup.

For further assistance, contact Support via the portal or email support@support.nubius.io.

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