usr/bin/custom/watchdog-monitor aktualisiert

usr/bin/custom/watchdog-monitor

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+#!/bin/bash
+
+# Log file
+log_file="/var/log/watchdog.log"
+
+# Configuration file
+config_file="/etc/watchdog.conf"
+
+# Function to update watchdog configuration
+update_watchdog_config() {
+    # Extract watchdog IP addresses
+    watchdog=$(sudo cat /var/lib/dhcp/* | grep -a "option watchdog" | tail -1 | \
+    awk '{for (i=3; i<=NF; i++) printf "%s ", $i}' | tr -d '";')
+    
+    IFS=' ' read -r -a ip_array <<< "$watchdog"
+
+    # Backup current configuration
+    if sudo cp "$config_file" "$config_file.bak"; then
+        echo "Backup of $config_file created successfully." >> "$log_file"
+    else
+        echo "Failed to create backup of $config_file." >> "$log_file"
+    fi
+
+    # Clean existing configurations
+    sudo sed -i '/ping/d' "$config_file"
+    sudo sed -i '/^interval/d' "$config_file"
+
+    # Set interval
+    echo "interval = 60" | sudo tee -a "$config_file" > /dev/null
+
+    if [ ${#ip_array[@]} -eq 0 ]; then
+        echo "No IP addresses found. Watchdog configuration cleared." >> "$log_file"
+    else
+        for ip in "${ip_array[@]}"; do
+            echo "ping = $ip" | sudo tee -a "$config_file" > /dev/null
+        done
+        echo "Configured watchdog to ping: ${ip_array[*]}" >> "$log_file"
+        
+        # Restart watchdog service since IP addresses were found
+        if sudo systemctl restart watchdog; then
+            echo "Watchdog service restarted successfully." >> "$log_file"
+        else
+            echo "Failed to restart watchdog service." >> "$log_file"
+        fi
+
+        return 1  # Indicate that IP addresses were found
+    fi
+
+    return 0  # Indicate that no IP addresses were found
+}
+
+# Main loop
+start_time=$(date +%s)
+end_time=$((start_time + 300))  # 5 minutes in seconds
+interval=30  # Initial interval of 30 seconds
+
+while true; do
+    if update_watchdog_config; then
+        echo "IP addresses found and watchdog restarted. Exiting loop." >> "$log_file"
+        break  # Exit the loop if IP addresses were found
+    fi
+
+    current_time=$(date +%s)
+    
+    # Check if 5 minutes have passed
+    if [ "$current_time" -ge "$end_time" ]; then
+        echo "5 minutes have passed. Stopping the watchdog service." >> "$log_file"
+        sudo systemctl stop watchdog
+        break  # Exit the loop
+    fi
+    
+    echo "Waiting for $interval seconds before checking for IP addresses again..." >> "$log_file"
+    sleep $interval
+done
+
+# Version 1.4:
+# Created 2024 by Tim Eertmoed @ WiS IT-Solutions GmbH, Germany to work on Raspian as custom PXE init script.