Monitoring & Performance

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

1. Log in to the Nubius Customer Portal.

2. Navigate to Store → 360 Monitoring or go directly to https://portal.nubius.io/store/360monitoring

3. Select a monitoring plan and complete the order.

4. 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

1. Log in to your server via SSH as root.

2. Navigate to the root directory:

   cd /root

3. Create a new script file:

   vim load-alert.sh

4. 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 --------------------------------------#

5. Save and exit the file (ESC + :wq in vim).

6. Make the script executable:

   chmod 755 load-alert.sh

Setting Up Automated Monitoring (Cron Job)

1. Open the cron editor:

   crontab -e

2. Add a line to run the script every 5 minutes:

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

3. 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.