lxc scripts to create new container and take container snapshot

lxc_container_new.sh

#!/bin/bash
###############################################
# lxc: Script to create a new Ubuntu container
#
# Vignesh Narasimhulu
###############################################

#Validate user
user=$(whoami)
if [ $user != "root" ];then
	echo "ERROR: This script should be triggered as root. Exiting."
	exit 99
fi

#Validate syntax
if [ "$#" -ne 1 ]; then
	echo -e "\nERROR: Invalid syntax.\n\nUSAGE: $0 newcontainer_name\n"
	exit 1
fi

#Assign input to variable
name=$1

echo -e "\nCreating container $name based on Ubuntu template\n"

#Create xenial Ubuntu container
#lxc-create -t ubuntu -n $name -- template-options -r xenial

lxc-create -t ubuntu -n $name
if [ "$?" -ne 0 ];then
	echo "Container creation failed. Exiting."
	exit 2
else
	echo "Checking the container info.."
	lxc-info -n $name
fi

#Update container config with auto-start and time, before container is started
echo "lxc.start.auto = 1" >> /var/lib/lxc/$name/config
echo "lxc.start.delay = 5" >> /var/lib/lxc/$name/config

#Start the container
lxc-start -n $name -d

#Validate if container running fine
lxc-info -n $name | grep -w RUNNING > /dev/null
if [ "$?" -ne 0 ];then
	echo "Container not running. Exiting."
	exit 3
fi

sleep 5 #fail-safe

#Update the container and install some utils
lxc-attach -n $name -- sudo apt-get update -y

lxc-attach -n $name -- sudo apt-get upgrade -y

lxc-attach -n $name -- sudo apt-get install wget curl -y

lxc_container_snapshot.sh

#!/usr/bin/env bash

################################################
# lxc: Script to create an offline lxc snapshot
#
# Vignesh Narasimhulu
################################################

#script needs elevated privileges
if [ ${UID} != 0 ];then
        echo "ERROR: This script should be triggered as root. Exiting."
        exit 99
fi

#Validate syntax
if [ "$#" -ne 1 ]; then
        echo -e "\nERROR: Invalid syntax.\n\nUSAGE: $0 container_name\n"
        exit 1
fi

#Assign input to variable
name=$1

echo -e "\nCreating container snapshot for ${name}\n"

#before: list snapshots
lxc-snapshot -n ${name} -L

#stop the container
lxc-stop -n ${name}

#take snapshot: this copies config file and the rootfs directory from /var/lib/lxc/container-name/ to /var/lib/lxc/container-name/snaps/snapname/
lxc-snapshot -n ${name} -o output	#this only works on stopped containers

#after: list snapshots
lxc-snapshot -n ${name} -L