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Current File : //usr/local/bin/server_health_check.sh

#!/bin/bash

# =================================================================
# ---               SERVER HEALTH CHECK SCRIPT                  ---
# =================================================================

# ---         CONFIGURATION - CHANGE THESE VALUES!            ---
# Set the email address to send the report to.
#EMAIL_TO="kabindersingh@yobytech.com"
EMAIL_TO=(
    "kabindersingh@yobytech.com"
    "support.manager@yobytech.com"
    "ashok.sarangi@yobytech.com"
)
# Set the warning thresholds.
DISK_THRESHOLD=85  # Warn if disk usage is over 85%
LOAD_THRESHOLD=5   # Warn if 1-minute load average is over 5.0
MEMORY_THRESHOLD=85 # Warn if RAM usage is over 85%
# ---         END OF CONFIGURATION                          ---


# ---         DO NOT EDIT BELOW THIS LINE                   ---
HOSTNAME=$(hostname)
TODAY=$(date +"%Y-%m-%d %H:%M:%S")
SUBJECT="[Health Report] - Server: ${HOSTNAME} - ${TODAY}"
REPORT=""

# Function to add a check to the report
add_to_report() {
    LABEL=$1
    VALUE=$2
    STATUS=$3
    REPORT+=$(printf "%-25s %-20s %s\n" "${LABEL}" "${VALUE}" "${STATUS}")
}

# --- GATHERING DATA ---

# 1. System Load
LOAD_AVG=$(cut -d' ' -f1 /proc/loadavg)
LOAD_STATUS="OK"
if (( $(echo "${LOAD_AVG} > ${LOAD_THRESHOLD}" | bc -l) )); then
    LOAD_STATUS="!! CRITICAL !!"
fi

# 2. Disk Usage (Root Partition)
DISK_USAGE=$(df -h / | tail -n 1 | awk '{print $5}' | sed 's/%//')
DISK_STATUS="OK"
if [ "${DISK_USAGE}" -gt "${DISK_THRESHOLD}" ]; then
    DISK_STATUS="!! CRITICAL !!"
fi

# 3. Memory Usage
MEMORY_USAGE=$(free -m | awk '/Mem:/ {printf "%.0f", $3/$2 * 100.0}')
MEMORY_STATUS="OK"
if [ "${MEMORY_USAGE}" -gt "${MEMORY_THRESHOLD}" ]; then
    MEMORY_STATUS="!! CRITICAL !!"
fi

# 4. Apache Service Status
if systemctl is-active --quiet apache2; then
    APACHE_STATUS="Running"
    APACHE_HEALTH="OK"
else
    APACHE_STATUS="NOT RUNNING"
    APACHE_HEALTH="!! CRITICAL !!"
fi

# 5. MySQL Service Status
if systemctl is-active --quiet mysql; then
    MYSQL_STATUS="Running"
    MYSQL_HEALTH="OK"
else
    MYSQL_STATUS="NOT RUNNING"
    MYSQL_HEALTH="!! CRITICAL !!"
fi


# --- BUILDING THE REPORT ---
REPORT="Health Check Report for ${HOSTNAME} on ${TODAY}\n"
REPORT+="==============================================================\n"
REPORT+=$(printf "%-25s %-20s %s\n" "METRIC" "VALUE" "STATUS")
REPORT+="--------------------------------------------------------------\n"
add_to_report "System Load (1 min):" "${LOAD_AVG}" "${LOAD_STATUS}"
add_to_report "Disk Usage (/):" "${DISK_USAGE}%" "${DISK_STATUS}"
add_to_report "Memory Usage:" "${MEMORY_USAGE}%" "${MEMORY_STATUS}"
add_to_report "Apache Service:" "${APACHE_STATUS}" "${APACHE_HEALTH}"
add_to_report "MySQL Service:" "${MYSQL_STATUS}" "${MYSQL_HEALTH}"
REPORT+="==============================================================\n"


# --- SENDING THE EMAIL ---
echo -e "${REPORT}" | mail -s "${SUBJECT}" "${EMAIL_TO[@]}"
exit 0