kolla-ansible/tools/setup_Debian.sh
Dave Walker (Daviey) 334ef7d540 setup_{RedHat,Debian}.sh, make more idempotent
Previously, when either setup_{RedHat,Debian}.sh was ran
multiple times a mess was created due to multiple loop
devices being setup.

This change now looks to see if '/docker' or '/swapfile'
already exist, and not re-create them if they do.

*However*, /var/lib/docker (/docker) is still wiped - but it
means that the script can run and bring the system into a
constant vanilla state.

Change-Id: I169662fa04c2bf644672ca75c3ee579795943727
Closes-Bug: #1586563
Signed-off-by: Dave Walker (Daviey) <email@daviey.com>
2016-06-07 11:10:07 +01:00

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#!/bin/bash
set -o xtrace
set -o errexit
function add_key {
local counter=0
while :; do
if [[ "${counter}" -gt 5 ]]; then
echo "Failed to add Docker keyring"
exit 1
fi
# hkp://pool.sks-keyservers.net intermittenly doesnt have the correct
# keyring. p80 is what the docker script pulls from and what we should
# use for reliability too
sudo apt-key adv --keyserver hkp://p80.pool.sks-keyservers.net:80 --recv-keys 58118E89F3A912897C070ADBF76221572C52609D && break || :
sleep 5
done
}
function setup_disk {
if [ ! -f /swapfile ]; then
sudo swapoff -a
sudo dd if=/dev/zero of=/swapfile bs=1M count=4096
sudo chmod 0600 /swapfile
sudo mkswap /swapfile
sudo /sbin/swapon /swapfile
fi
if [ ! -f /docker ]; then
sudo dd if=/dev/zero of=/docker bs=1M count=10240
losetup -f /docker
DEV=$(losetup -a | awk -F: '/\/docker/ {print $1}')
fi
# Format Disks and setup Docker to use BTRFS
sudo parted ${DEV} -s -- mklabel msdos
sudo rm -rf /var/lib/docker
sudo mkdir /var/lib/docker
# We want to snapshot the entire docker directory so we have to first create a
# subvolume and use that as the root for the docker directory.
sudo mkfs.btrfs -f ${DEV}
sudo mount ${DEV} /var/lib/docker
sudo btrfs subvolume create /var/lib/docker/docker
sudo umount /var/lib/docker
sudo mount -o noatime,subvol=docker ${DEV} /var/lib/docker
}
# (SamYaple)TODO: Remove the path overriding
export PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
# Setup Docker repo and add signing key
echo 'deb http://apt.dockerproject.org/repo ubuntu-trusty main' | sudo tee /etc/apt/sources.list.d/docker.list
add_key
sudo apt-get update
sudo apt-get -y install --no-install-recommends docker-engine btrfs-tools
sudo service docker stop
setup_disk
echo 'DOCKER_OPTS="-s btrfs"' | sudo tee /etc/default/docker
sudo mount --make-shared /run
sudo service docker start
sudo docker info
echo "Completed $0."