Install LXC (Linux Containers) under Ubuntu

apt install -y bridge-utils debootstrap lxc-templates lxc

export LANG=en_US.UTF-8
export CONTAINER=wheezy
 
sudo sudo lxc-destroy -n ${CONTAINER}
sudo lxc-create -t debian -n ${CONTAINER}
sudo lxc-start -d -n ${CONTAINER}
 
echo 'Acquire::http::Proxy "http://apt-cacher:3142/";' | sudo tee /var/lib/lxc/${CONTAINER}/rootfs/etc/apt/apt.conf
 
sudo lxc-attach -n ${CONTAINER} -- apt-get clean
sudo lxc-attach -n ${CONTAINER} -- apt-get update
sudo lxc-attach -n ${CONTAINER} -- apt-get dist-upgrade -y
sudo lxc-attach -n ${CONTAINER} -- apt-get install -y wget vim
 
# start container in forderground
lxc-start -n vm1  -F
 
# optional
echo "lxc.start.auto = 1" | tee -a /var/lib/lxc/${CONTAINER}/config
 
# connect to container
ssh root@$(sudo lxc-info -i -H -n ${CONTAINER})

echo "deb http://ftp.debian.org/debian testing main" >> /etc/apt/sources.list.d/testing.list
apt-get update
apt-get -t testing install -y lxc
sed -i 's|lxc.network.type = empty|lxc.network.type = veth|' /etc/lxc/default.conf
echo "lxc.network.link = lxcbr0" >> /etc/lxc/default.conf

wget -q --no-check-certificate https://raw.githubusercontent.com/panticz/lxc/master/scripts/lxc-update-templates.sh -O - | sudo bash -
 
# required for fedora container
sudo apt-get install -y yum  curl

sed -i '/iproute/a wget,\\\nvim,\\' /usr/share/lxc/templates/lxc-debian

sed -i 's|#MIRROR="http://<host-ip-addr>:3142/archive.ubuntu.com/ubuntu"|MIRROR="http://apt-cacher:3142/archive.ubuntu.com/ubuntu"|g' /etc/default/lxc
echo 'Acquire::http::Proxy "http://apt-cacher:3142/";' >> /etc/apt/apt.conf 
apt-get update

lvcreate --name lxc-data --size 128G vg0
mkfs.ext4 /dev/vg0/lxc-data
echo "/dev/vg0/lxc-data    /var/lib/lxc/           ext4    defaults        0       0" >> /etc/fstab

# install debian wheezy
LANG=en_US.UTF-8
lxc-create -n vm1 -t debian
 
# create debian squeeze
export MIRROR="http://apt-cacher:3142/ftp.debian.org/debian"
lxc-create -n squeeze1 -t debian -- template-options -r squeeze
 
# create debian jessie
sudo lxc-create -n jessie -t debian -- template-options -r jessie
echo "lxc.aa_profile = unconfined" >> /var/lib/lxc/jessie/config
sudo lxc-start -n jessie
 
# create debian sid
lxc-create -n sid -t debian -- template-options -r sid
echo "lxc.aa_profile = unconfined" >> /var/lib/lxc/sid/config
 
# create lvm container
lxc-create -n wheezy -t debian -B lvm --vgname vg0
 
# create ubuntu precise 32 bit
export MIRROR="http://apt-cacher:3142/archive.ubuntu.com/ubuntu"
sudo lxc-create -t ubuntu -n lpdev4 -- -r precise -a i386

lxc-top -s m

lxc-attach -n wheezy -- ls -l
 
lxc-create -n vm3 -t ubuntu
# lxc-create -n foo -f lxc.conf
 
# OPTIONAL: enable apt-cache in VM
echo 'Acquire::http::Proxy "http://apt-cacher:3142/";' >> /var/lib/lxc/vm3/rootfs/etc/apt/apt.conf

echo "lxc.start.auto = 1" >> /var/lib/lxc/vm3/config
 
# start all autostart container on boot
sed -i 's|OPTIONS=|OPTIONS="-a"|' /etc/default/lxc
 
# Container configuration
/var/lib/lxc/vm1/config
lxc.group = dev
 
# start vm
lxc-start -n vm1
 
# bypass apparmor (LTSP server test)
echo "lxc.aa_profile = unconfined" >> /var/lib/lxc/vm3/config

/usr/share/lxc/templates/
 
# dep
# apt-get install -y bridge-utils debootstrap
# libvirt-bin
 
# configure fs
echo "cgroup          /sys/fs/cgroup         cgroup  defaults        0       0" >> /etc/fstab
mount -a

lxc-stop -n squeeze
echo "before installing squid3" > /tmp/comment
sudo lxc-snapshot -n squeeze -c /tmp/comment
lxc-snapshot -L -C -n squeeze
 
# restore
sudo lxc-snapshot -n oracle -r snap0
 
# list snapshots
sudo lxc-snapshot -n squeeze -L
 
# destry snapshot
sudo lxc-snapshot -n squeeze -d snap0

/usr/share/lxc/templates/lxc-ubuntu -h
/usr/share/lxc/templates/lxc-debian -h

sudo apt-get install lxc
sudo lxc-create -t ubuntu -n host-container -t ubuntu
#E# sudo wget https://www.stgraber.org/download/lxc-with-nesting -O /etc/apparmor.d/lxc/lxc-with-nesting
sudo /etc/init.d/apparmor reload
 
# lxc.aa_profile = lxc-container-with-nesting
echo "lxc.aa_profile = unconfined" | sudo tee -a /var/lib/lxc/host-container/config
sudo lxc-start -n host-container
 
# user: ubuntu
# pass: ubuntu
 
# in host-container
sudo apt-get install lxc
sudo lxc-create -n sub-container -t ubuntu
sudo lxc-start -n sub-container
 
# on HOST, list nested container
sudo lxc-ls --fancy --nesting

cat <<EOF>> /var/lib/lxc/ubuntu/config
lxc.network.ipv4 = 10.0.0.14
lxc.network.ipv4.gateway = auto
EOF

lxc.cgroup.cpuset.cpus                 = 16-23
lxc.cgroup.memory.limit_in_bytes       = 30720M
lxc.cgroup.memory.memsw.limit_in_bytes = 32768M
 
??
lxc.cgroup.cpu.cfs_period_us = 100000
lxc.cgroup.cpu.cfs_quota_us = 200000

# list limits
for CONTAINER in $(lxc-ls --running); do
    printf "%-40s %s\n" ${CONTAINER} $(lxc-cgroup -n ${CONTAINER} cpu.shares)
done
 
# get limits from configuration files
grep cpu /var/lib/lxc/*/config | grep -v '#lxc.cgroup.cpu.shares'
 
# configure cpu.shares on the fly
lxc-cgroup -n www.example.com cpu.shares 256
 
lxc-cgroup -n www.example.com cpu.shares 256
lxc-cgroup -n www.example.com cpuset.cpus "0,3"
lxc-cgroup -n www.example.com cpuset.cpus "0-3"
lxc-cgroup -n www.example.com cpu.shares 512
echo "lxc.cgroup.cpu.shares = 512" >> /var/lib/lxc/www.example.com cpu.shares/config
 
# change memory on the fly
lxc-cgroup -n cacti memory.limit_in_bytes 1G
 
on runnting container
lxc-cgroup -n $CONTAINER cpuset.cpus 0

sudo lxc-ls -f -F ipv4 jessie | tail -1
 
lxc.cgroup.cpu.shares=256
lxc.cgroup.blkio.weight=500
 
lxc-cgroup -n ol6ctr1 cpuset.cpus 0-7
lxc-cgroup -n ol6ctr1 cpuset.cpus 0,1
lxc-cgroup -n ol6ctr2 cpu.shares 256
lxc-cgroup -n ol6ctr2 blkio.weight 500
lxc-cgroup -n ol6ctr2 memory.soft_limit_in_bytes 268435456
lxc-cgroup -n ol6ctr2 memory.limit_in_bytes 53687091

LXC_HOST=lxc1.example.com
CONTAINER=www.example.com
sudo rsync -ae "ssh -i ./.ssh/id_rsa" --numeric-ids --exclude=proc/* --exclude=sys/* --exclude=tmp/* root@${LXC_HOST}:/var/lib/lxc/${CONTAINER} /var/lib/lxc/

sudo rsync --numeric-ids -ae "ssh -i ./.ssh/id_rsa" root@bkp1.exampe.com:/vo1/backup/rsnapshot/daily.0/lxc1.example.com/var/lib/lxc/foo.vm /var/lib/lxc/
 
# check kernel config
lxc-checkconfig
 
# create ssh container
lxc-create -n ssh -t sshd
 
# list avaiable templates
ls -l /usr/share/lxc/templates/
 
lxc-create --template download --name gentoo
 
# debug
lxc-start --logfile /tmp/lxc-vm1.log --logpriority DEBUG -n vm1

wget -O - http://claudyus.github.io/LXC-Web-Panel/claudyus.gpg.key | apt-key add -
echo "deb http://claudyus.github.io/LXC-Web-Panel/ debian/" | tee /etc/apt/sources.list.d/lwp.list
apt-get update
apt-get install lwp
 
cp /etc/lwp/lwp.example.conf /etc/lwp/lwp.conf
 
http://192.168.1.176:5000/
user: admin
pass: admin

FROM=jessie
TO=letsencrypt
lxc-stop -n ${FROM}
mv /var/lib/lxc/${FROM} /var/lib/lxc/${TO}
sed -i "s|${FROM}|${TO}|g" /var/lib/lxc/${TO}/config
echo ${TO%%.*} > /var/lib/lxc/${TO}/rootfs/etc/hostname
sed -i "s|${FROM}|${TO%%.*}|g" /var/lib/lxc/${TO}/rootfs/etc/hosts