Update 2025-04-13_16:21:50

lxc_create.sh

@@ -0,0 +1,65 @@
+#!/bin/bash
+
+read -e -p "LXCHOSTNAME: " LXCHOSTNAME
+export LXCHOSTNAME
+
+# Stop the template container
+lxc-stop -n template
+
+# Copy the template to create a new container with the given hostname
+lxc-copy -n template -N "$LXCHOSTNAME"
+
+# Function to generate a unique MAC address
+generate_unique_hwaddr() {
+    local hwaddr
+    local existing_hwaddrs
+    while : ; do
+        hwaddr=$(printf '00:16:3e:%02x:%02x:%02x\n' $((RANDOM%256)) $((RANDOM%256)) $((RANDOM%256)))
+        existing_hwaddrs=$(grep "lxc.net.0.hwaddr" /var/lib/lxc/*/config | grep "$hwaddr")
+        if [ -z "$existing_hwaddrs" ]; then
+            # MAC address is unique
+            echo "$hwaddr"
+            return
+        fi
+    done
+}
+
+# Generate a unique MAC address
+NEW_HWADDR=$(generate_unique_hwaddr)
+
+# Path to the LXC configuration file
+CONFIG_FILE="/var/lib/lxc/$LXCHOSTNAME/config"
+
+# Replace the existing hwaddr line
+sed -i "/^lxc.net.0.hwaddr/c\lxc.net.0.hwaddr = $NEW_HWADDR" "$CONFIG_FILE"
+
+echo "MAC address in $CONFIG_FILE updated to $NEW_HWADDR."
+
+# Start the new container
+lxc-start -n "$LXCHOSTNAME"
+
+# Wait for the container to start
+sleep 5
+
+# Change the hostname inside the container
+lxc-attach -n "$LXCHOSTNAME" -- bash -c "echo '$LXCHOSTNAME' > /etc/hostname"
+lxc-attach -n "$LXCHOSTNAME" -- hostname "$LXCHOSTNAME"
+
+# Update /etc/hosts
+lxc-attach -n "$LXCHOSTNAME" -- bash -c "echo '127.0.0.1 $LXCHOSTNAME' >> /etc/hosts"
+
+# Ensure the container has internet access (optional, check and adjust if needed)
+lxc-attach -n "$LXCHOSTNAME" -- ping -c 4 google.com
+echo
+
+# Stop and restart the container
+lxc-stop -n "$LXCHOSTNAME"
+lxc-start -n "$LXCHOSTNAME"
+
+# Display the MAC addresses to verify the changes
+grep lxc.net.0.hwaddr /var/lib/lxc/*/config
+
+# Wait and list containers to ensure they are running
+sleep 9
+lxc-ls -f
+