Add system requirement cheks.

graylog/install.sh

@@ -14,6 +14,40 @@ echo "Installing dependencies..."
 # Install prerequisites for Graylog, OpenSearch, and MongoDB
 apt install -y apt-transport-https openjdk-11-jre-headless uuid-runtime pwgen wget gnupg
 
+# Function to check if the system meets the minimum requirements for Graylog
+check_system_requirements() {
+    echo "Checking system requirements for Graylog..."
+    
+    # Minimum required RAM (in MB)
+    minimum_ram=4096
+    # Minimum required disk space (in GB)
+    minimum_disk_space=50
+
+    # Get total RAM in the system
+    total_ram=$(awk '/MemTotal/ {print $2}' /proc/meminfo)
+
+    # Get total disk space in the system
+    total_disk_space=$(df -BG --output=avail / | sed '1d' | awk '{print $1}' | sed 's/G//')
+
+    # Check if RAM meets the minimum requirements
+    if [ "$total_ram" -lt "$minimum_ram" ]; then
+        echo "Error: Insufficient RAM. Graylog requires a minimum of $minimum_ram MB of RAM."
+        exit 1
+    else
+        echo "RAM: $total_ram MB - meets minimum requirements."
+    fi
+
+    # Check if disk space meets the minimum requirements
+    if [ "$total_disk_space" -lt "$minimum_disk_space" ]; then
+        echo "Error: Insufficient disk space. Graylog requires a minimum of $minimum_disk_space GB of available disk space."
+        exit 1
+    else
+        echo "Disk space: $total_disk_space GB - meets minimum requirements."
+    fi
+
+    echo "System meets the minimum requirements for Graylog."
+}
+
 # Disable huge pages support
 echo "Disabling huge pages support..."
 echo never > /sys/kernel/mm/transparent_hugepage/enabled