Add create_k3s_ready_lxc.sh

create_k3s_ready_lxc.sh

@@ -0,0 +1,106 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+echo "=== Proxmox LXC (K3s-ready) Creator ==="
+echo
+
+### --- Container basics ---
+read -rp "Container ID (e.g. 110): " CT_ID
+read -rp "Hostname: " HOSTNAME
+read -rp "Rootfs size (GB, e.g. 16): " ROOTFS_SIZE
+read -rp "Memory (MB, e.g. 4096): " MEMORY
+read -rp "CPU cores (e.g. 2): " CORES
+read -rsp "Root password: " PASSWORD
+echo
+
+### --- Select LXC template ---
+echo
+echo "Fetching available LXC templates..."
+mapfile -t TEMPLATES < <(pveam list local | awk '/vztmpl/ {print $1}')
+
+if [[ ${#TEMPLATES[@]} -eq 0 ]]; then
+  echo "❌ No templates found in local storage."
+  echo "Run: pveam update && pveam available && pveam download local <template>"
+  exit 1
+fi
+
+echo
+echo "Select Ubuntu (or other) template:"
+select TEMPLATE in "${TEMPLATES[@]}"; do
+  [[ -n "${TEMPLATE:-}" ]] && break
+  echo "Invalid selection."
+done
+
+### --- Select network bridge ---
+echo
+echo "Detecting network bridges..."
+mapfile -t BRIDGES < <(awk '/iface vmbr/ {print $2}' /etc/network/interfaces)
+
+if [[ ${#BRIDGES[@]} -eq 0 ]]; then
+  echo "❌ No vmbr bridges detected."
+  exit 1
+fi
+
+echo
+echo "Select network bridge:"
+select BRIDGE in "${BRIDGES[@]}"; do
+  [[ -n "${BRIDGE:-}" ]] && break
+  echo "Invalid selection."
+done
+
+echo
+echo "Creating container $CT_ID ($HOSTNAME)..."
+
+pct create "$CT_ID" "$TEMPLATE" \
+  --hostname "$HOSTNAME" \
+  --net0 "name=eth0,bridge=${BRIDGE},ip=dhcp" \
+  --memory "$MEMORY" \
+  --cores "$CORES" \
+  --rootfs "local-lvm:${ROOTFS_SIZE}" \
+  --swap 0 \
+  --unprivileged 0 \
+  --features nesting=1
+
+echo "Stopping container to patch config..."
+pct stop "$CT_ID"
+
+echo "Applying K3s-required LXC configuration..."
+cat <<EOF >> /etc/pve/lxc/${CT_ID}.conf
+# --- K3s / Kubernetes requirements ---
+lxc.apparmor.profile: unconfined
+lxc.cgroup.devices.allow: a
+lxc.cap.drop:
+lxc.mount.auto: "proc:rw sys:rw"
+EOF
+
+echo "Starting container..."
+pct start "$CT_ID"
+sleep 5
+
+echo "Setting root password..."
+pct exec "$CT_ID" -- bash -c "echo 'root:${PASSWORD}' | chpasswd"
+
+echo "Installing minimal dependencies..."
+pct exec "$CT_ID" -- bash -c "
+apt update &&
+apt install -y curl ca-certificates
+"
+
+echo "Creating /etc/rc.local inside container..."
+pct exec "$CT_ID" -- bash -c "
+cat <<'EOF' > /etc/rc.local
+#!/bin/sh -e
+if [ ! -e /dev/kmsg ]; then
+    ln -s /dev/console /dev/kmsg
+fi
+mount --make-rshared /
+EOF
+
+chmod +x /etc/rc.local
+/etc/rc.local
+"
+
+echo
+echo "✅ Container $CT_ID is ready for K3s installation."
+echo "   Networking: DHCP on ${BRIDGE}"
+echo "   Template:   ${TEMPLATE}"