usr/bin/overlayfs.sh hinzugefügt

usr/bin/overlayfs.sh

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+#!/bin/sh
+# Raspberry Pi OverlayFS Initialization Script with NFS Logging
+# Version: 1.2
+
+set -e
+
+echo "Starting OverlayFS and NFS logging setup..."
+
+# Mount root filesystem as read-only
+mount -o remount,ro /
+
+# Start the DHCP client to get the hostname
+dhclient eth0 -1 # Wait for DHCP to complete
+
+# Get the hostname from DHCP
+DHCP_HOSTNAME=$(cat /var/lib/dhcp/dhclient.* | grep "option host-name" | awk '{print $3}' | tr -d '";')
+if [ -n "$DHCP_HOSTNAME" ]; then
+    echo "Setting hostname to $DHCP_HOSTNAME"
+    hostnamectl set-hostname "$DHCP_HOSTNAME"
+else
+    echo "No DHCP hostname found, using default hostname."
+    DHCP_HOSTNAME="default"
+fi
+
+# Set up OverlayFS for /tmp
+OVERLAY_BASE=/overlay
+mkdir -p ${OVERLAY_BASE}/{tmp_upper,tmp_work,varlog_work}
+
+# Mount /tmp as an overlay filesystem
+mkdir -p /tmp
+mount -t overlay overlay \
+  -o lowerdir=/tmp,upperdir=${OVERLAY_BASE}/tmp_upper,workdir=${OVERLAY_BASE}/tmp_work \
+  /tmp
+
+# Mount /var/log via NFS
+NFS_SERVER="192.168.12.239"
+NFS_PATH="/clients/$DHCP_HOSTNAME"
+LOCAL_MOUNT_POINT="/var/log"
+
+echo "Creating local mount point: $LOCAL_MOUNT_POINT"
+mkdir -p $LOCAL_MOUNT_POINT
+
+# Ensure NFS utilities are available
+if ! command -v mount.nfs > /dev/null; then
+    echo "NFS utilities not found! Installing nfs-common..."
+    sudo apt-get update
+    sudo apt-get install -y nfs-common
+fi
+
+echo "Mounting NFS: $NFS_SERVER:$NFS_PATH to $LOCAL_MOUNT_POINT"
+mount -t nfs "$NFS_SERVER:$NFS_PATH" $LOCAL_MOUNT_POINT || {
+    echo "NFS mount failed, using OverlayFS for /var/log."
+    # If NFS fails, use OverlayFS for /var/log
+    mkdir -p ${OVERLAY_BASE}/varlog_upper
+    mount -t overlay overlay \
+      -o lowerdir=/var/log,upperdir=${OVERLAY_BASE}/varlog_upper,workdir=${OVERLAY_BASE}/varlog_work \
+      /var/log
+}
+
+# Mount Chromium user data directory as an overlay
+mkdir -p /home/loginuser/.config/chromium
+mount -t overlay overlay \
+  -o lowerdir=/home/loginuser/.config/chromium,upperdir=${OVERLAY_BASE}/chromium_upper,workdir=${OVERLAY_BASE}/chromium_work \
+  /home/loginuser/.config/chromium
+
+# Fix permissions for loginuser
+chown -R loginuser:loginuser /home/loginuser/.config/chromium
+chmod 700 /home/loginuser/.config/chromium
+
+# Ensure that /var/log and /tmp are set up for the next boot
+echo "Adding NFS /var/log mount to /etc/fstab"
+if ! grep -q "$NFS_SERVER:$NFS_PATH" /etc/fstab; then
+    echo "$NFS_SERVER:$NFS_PATH $LOCAL_MOUNT_POINT nfs defaults 0 0" | sudo tee -a /etc/fstab
+fi
+
+echo "OverlayFS and NFS logging setup completed successfully."
+echo "Starting system..."
+
+# Continue with the regular boot process
+exec /sbin/init