Network_Setup for Kdump Remote Mode.

build_debian.sh

@@ -413,6 +413,20 @@ sudo LANG=c chroot $FILESYSTEM_ROOT chmod 644 /etc/group
 sudo LANG=C chroot $FILESYSTEM_ROOT /bin/bash -c "mkdir -p /etc/initramfs-tools/conf.d"
 sudo LANG=C chroot $FILESYSTEM_ROOT /bin/bash -c "echo 'MODULES=most' >> /etc/initramfs-tools/conf.d/driver-policy"
 
+# Ensure the relevant directories exist
+sudo mkdir -p /etc/initramfs-tools/scripts/init-premount
+sudo mkdir -p /etc/initramfs-tools/hooks
+
+# Copy the network setup scriptgit
+sudo cp files/scripts/network_setup.sh /etc/initramfs-tools/scripts/init-premount/network_setup.sh
+
+# Copy the hook file
+sudo cp files/scripts/network_setup /etc/initramfs-tools/hooks/network_setup
+
+# Make the scripts executable
+sudo chmod +x /etc/initramfs-tools/scripts/init-premount/network_setup.sh
+sudo chmod +x /etc/initramfs-tools/hooks/network_setup
+
 # Copy vmcore-sysctl.conf to add more vmcore dump flags to kernel
 sudo cp files/image_config/kdump/vmcore-sysctl.conf $FILESYSTEM_ROOT/etc/sysctl.d/
 

files/scripts/network_setup

@@ -0,0 +1,22 @@
+#!/bin/sh
+PREREQ=""
+
+prereqs() {
+    echo "$PREREQ"
+}
+
+case "$1" in
+    prereqs)
+        prereqs
+        exit 0
+        ;;
+esac
+
+. /usr/share/initramfs-tools/hook-functions
+
+# Add dhclient and its dependencies
+copy_exec /sbin/dhclient /sbin
+copy_exec /sbin/dhclient-script /sbin
+
+# Add the necessary network modules
+manual_add_modules e1000e

files/scripts/network_setup.sh

@@ -0,0 +1,56 @@
+#!/bin/sh
+
+# Read USE_KDUMP variable from /etc/default/kdump-tools
+if [ -f /etc/default/kdump-tools ]; then
+    . /etc/default/kdump-tools
+else
+    USE_KDUMP=0  # Default to 0 if the file doesn't exist
+fi
+
+# Check if USE_KDUMP is enabled
+if [ "$USE_KDUMP" -ne 1 ]; then
+    echo "KDUMP is not enabled. Skipping network setup."
+    exit 0
+fi
+
+# Function to get the IP address of the eth0 interface
+get_eth0_ip() {
+    ip addr show eth0 | grep 'inet ' | awk '{print $2}' | cut -d'/' -f1
+}
+
+# Function to get the default gateway
+get_default_gateway() {
+    ip route | grep default | awk '{print $3}'
+}
+
+# Wait for the network interface to appear
+for i in {1..10}; do
+    if ip link show eth0; then
+        break
+    fi
+    sleep 1
+done
+
+# Bring up the network interface
+ip link set eth0 up
+
+# Use DHCP to obtain IP address and default gateway
+dhclient eth0
+# Wait a few seconds to ensure the IP is assigned
+sleep 6
+
+ETH0_IP=$(get_eth0_ip)
+DEFAULT_GW=$(get_default_gateway)
+
+if [ -z "$ETH0_IP" ] || [ -z "$DEFAULT_GW" ]; then
+    echo "DHCP failed to assign IP. Please enter a static IP and gateway."
+
+    read -p "Enter static IP address: " STATIC_IP
+    read -p "Enter default gateway: " STATIC_GW
+
+    # Set the static IP and gateway
+    ip addr add $STATIC_IP/24 dev eth0
+    ip route add default via $STATIC_GW
+else
+    echo "DHCP succeeded. IP: $ETH0_IP, Gateway: $DEFAULT_GW"
+fi