lxc

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LXC: create Debian Squeeze container

wget -q --no-check-certificate https://raw.githubusercontent.com/panticz/lxc/master/create.squeeze.sh -O - | bash -

#!/bin/bash

[ -z ${CONTAINER} ] && CONTAINER=squeeze
LANG=en_US.UTF-8

# force, remove previous container
if [ "$1" == "-f" ]; then
  [ $(sudo lxc-ls ${CONTAINER} | wc -l) -gt 0 ] && sudo lxc-destroy -f -n ${CONTAINER}
  shift
fi

# create container
sudo lxc-create -t debian -n ${CONTAINER} -- template-options -r squeeze $@

# start container in background
sudo lxc-start -d -n ${CONTAINER}

# wait 3 seconds until network is up
sleep 3

# copy APT proxy configuration from host
APT_PROXY=$(grep -h "Acquire::http::Proxy" /etc/apt/* -r | head -1)
[ -n "${APT_PROXY}" ] && echo ${APT_PROXY} | sudo tee /var/lib/lxc/${CONTAINER}/rootfs/etc/apt/apt.conf.d/01proxy

# update packages in container
sudo lxc-attach -n ${CONTAINER} -- apt-get update
sudo lxc-attach -n ${CONTAINER} -- apt-get dist-upgrade -y

# show containers status
sudo lxc-ls ${CONTAINER} -f

(re)create container
wget -q --no-check-certificate https://raw.githubusercontent.com/panticz/lxc/master/create.squeeze.sh -O - | bash -s -- -f

Default login credentials
user: root
pass: root

Fix DNS
echo nameserver 8.8.8.8 > /var/lib/lxc/${CONTAINER}/rootfs/etc/resolv.conf

LXC Containers

# Create Ubuntu 16.04 Xenial LXC container
sudo lxc-create --template ubuntu --name xenial -- template-options -r xenial

# Create Ubuntu 14.04 Trusty LXC container
sudo lxc-create --template ubuntu --name trusty -- template-options -r trusty

# Create Debian 9 Stretch LXC container
sudo lxc-create --template debian --name stretch -- template-options -r stretch

# centos
sudo lxc-create -t centos -n centos -- --release 7

# nested container / docker support
echo "lxc.aa_profile = unconfined" >> /var/lib/lxc/centos/config

Update LXC container templates filesystem

wget -q --no-check-certificate https://raw.githubusercontent.com/panticz/lxc/master/scripts/lxc-update-templates.sh -O - | bash -

#!/bin/bash

# ensure that this script is run as root
if [ $(id -u) -ne 0 ]; then
  sudo $0
  exit
fi

# set language to english
LANG=en_US.UTF-8

# update APT rootfs (Debian and Ubuntu)
for DIST in $(find /var/cache/lxc/*/* -maxdepth 0 -type d); do
  echo "Updating ${DIST} ..."
  /usr/sbin/chroot "${DIST}" apt-get update -qq
  /usr/sbin/chroot "${DIST}" apt-get dist-upgrade -qq -y
  /usr/sbin/chroot "${DIST}" apt-get autoremove -qq -y
  /usr/sbin/chroot "${DIST}" apt-get clean
done

# fix dns
echo "nameserver 8.8.8.8" > /var/cache/lxc/debian/rootfs-wheezy-amd64/etc/resolv.conf

Cronjob
echo "0 13 * * * root /usr/bin/wget -q --no-check-certificate https://raw.githubusercontent.com/panticz/lxc/master/scripts/lxc-update-templates.sh -O - | bash -" > /etc/cron.d/lxc_update_template
service cron restart

# fix squeeze repository
sed -i 's|cdn.debian.net|ftp.debian.org|g' /var/cache/lxc/debian/rootfs-squeeze-amd64/etc/apt/sources.list

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