Proxmox VE

Container Automation Scripts

2 min read

Container Automation Scripts

Overview

Automation scripts for LXC containers. Create, manage, and maintain containers automatically.

Container Creation

Basic Create Script

#!/bin/bash
# create-ct.sh - Create container
 
VMID=$1
TEMPLATE=${2:-debian-12}
MEMORY=${3:-2048}
CORES=${4:-2}
IP=${5:-dhcp}
 
# Create container
pct create $VMID local:vztmpl/$TEMPLATE.tar.gz \
  --rootfs local:8 \
  --memory $MEMORY \
  --cores $CORES \
  --net0 name=eth0,bridge=vmbr0,ip=$IP \
  --hostname ct-$VMID
 
# Enable autostart
pct set $VMID --onboot 1
 
# Start
pct start $VMID
 
echo "Container $VMID created"

Full Setup Script

#!/bin/bash
# setup-ct.sh - Complete container setup
 
set -euo pipefail
 
VMID=$1
HOSTNAME=$2
TEMPLATE=${3:-debian-12}
PACKAGES=${4:-curl,wget,git}
 
# Create container
pct create $VMID local:vztmpl/$TEMPLATE.tar.gz \
  --rootfs local:10 \
  --memory 4096 \
  --cores 4 \
  --net0 name=eth0,bridge=vmbr0,ip=dhcp \
  --hostname $HOSTNAME
 
pct set $VMID --onboot 1 --startup-delay 10
 
# Start
pct start $VMID
 
# Wait for network
sleep 10
 
# Update
pct exec $VMID -- apt update
 
# Install packages
pct exec $VMID -- apt install -y $PACKAGES
 
echo "Container $VMID ready"

Management Scripts

Start/Stop All

#!/bin/bash
# manage-ct.sh - Manage containers
 
ACTION=$1
shift
 
case $ACTION in
    start)
        for VMID in "$@"; do
            pct start $VMID
            echo "Started CT $VMID"
        done
        ;;
    stop)
        for VMID in "$@"; do
            pct stop $VMID
            echo "Stopped CT $VMID"
        done
        ;;
    restart)
        for VMID in "$@"; do
            pct restart $VMID
            echo "Restarted CT $VMID"
        done
        ;;
esac

Execute in All

#!/bin/bash
# exec-all.sh - Execute in all containers
 
COMMAND="$@"
 
for VMID in $(pct list | grep running | awk '{print $1}'); do
    echo "=== CT $VMID ==="
    pct exec $VMID -- bash -c "$COMMAND"
done

Update Scripts

Update All Containers

#!/bin/bash
# update-ct.sh - Update all containers
 
for VMID in $(pct list | grep running | awk '{print $1}'); do
    echo "Updating CT $VMID..."
    pct exec $VMID -- bash -c "apt update && apt upgrade -y"
    echo "CT $VMID updated"
done
 
echo "All updates complete"

Backup Containers

Container Backup

#!/bin/bash
# backup-ct.sh - Backup container
 
VMID=$1
STORAGE=${2:-local}
 
pct stop $VMID
vzdump --mode stop --vmid $VMID --storage $STORAGE
pct start $VMID
 
echo "Container $VMID backed up"

Keywords

container lxc automation scripting management

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