top_ten_ram_exporter_instalation.sh

#!/bin/bash

# Create necessary directories if they do not exist
mkdir -p /opt/node_exporter/metrics_folder/
mkdir -p /opt/node_exporter/ram_consumption/

# Create the script file with the given content
cat << 'EOF' > /opt/node_exporter/ram_consumption/ram_p.sh
#!/bin/bash

# Path and name of the metrics file
METRIC_PATH=/opt/node_exporter/metrics_folder/
METRIC_FILE='top_ten_ram_usage.prom'

# Get the top 10 processes consuming the most RAM and their usage in MB
top_processes=$(ps aux --sort=-%mem | awk 'NR>1 {cmd=""; for(i=11;i<=NF;i++){cmd=cmd" "$i}; print $6/1024, cmd}' | sort -rn | head -n 10)

# Create or empty the metrics file
echo "" > ${METRIC_PATH}${METRIC_FILE}

# Process each line of the output and convert it into a Prometheus metric
while IFS= read -r line; do
    # Extract RAM usage and process command
    ram_usage=$(echo $line | awk '{print $1}')
    command=$(echo $line | cut -d' ' -f2-)

    # Replace spaces in the command with underscores to make it a valid Prometheus label
    command_label=$(echo $command | sed 's/ /_/g')

    # Format the metric for Prometheus
    metric="top_ten_ram_usage{command=\"$command_label\"} $ram_usage"

    # Write the metric to the file
    echo $metric >> ${METRIC_PATH}${METRIC_FILE}
done <<< "$top_processes"
EOF

# Set execution permissions
chmod +x /opt/node_exporter/ram_consumption/ram_p.sh

# Change owner to erp user
chown erp:erp /opt/node_exporter/ram_consumption/ram_p.sh

# Add to crontab if not already present
(crontab -l -u erp 2>/dev/null | grep -q '/opt/node_exporter/ram_consumption/ram_p.sh') || (crontab -l -u erp 2>/dev/null; echo '* * * * * /bin/bash /opt/node_exporter/ram_consumption/ram_p.sh') | crontab -u erp -