restore_docker_containers.sh

restore_docker_containers.sh

#!/bin/bash

# Reference: https://github.com/tlaanemaa/backup-docker
# Reference for starting addons via comd line: https://www.reddit.com/r/homeassistant/comments/an8lsl/how_do_you_issue_hassio_cli_commands_in_a/
# Installation of Prerequisites -
#
# sudo apt-get install npm
# sudo npm install -g backup-docker
# sudo apt-get install powershell
# cd ~
# wget https://dl.google.com/go/go1.13.8.linux-amd64.tar.gz
# sudo tar -C /usr/local -xzf go1.13.8.linux-amd64.tar.gz
# export PATH=$PATH:/usr/local/go/bin
# go get -d github.com/home-assistant/cli
# cd go/src/github.com/home-assistant/cli/
# go install
# cd ~

if (( $EUID != 0 )); then
    echo "Please run as root! Halting!"
    exit 1
fi

if ! [ -x "$(command -v backup-docker)" ]; then
    echo 'Error: backup-docker npm package is not installed! Halting!' >&2
    exit 1
fi

if ! [ -x "$(command -v pwsh)" ]; then
    echo 'Error: pwsh is not installed! Halting!' >&2
    exit 1
fi

if ! [ -f "$HOME/go/bin/cli" ]; then
    echo 'Error: The home assistant cli (https://github.com/home-assistant/cli) is not installed! Halting!' >&2
    exit 1
fi

#originalbackupdir='/mnt/WDElements575/ldfam_share/docker_backups'
originalbackupdir=$1

if [ ! -d $originalbackupdir ]; then
    echo 'Error: The original backup directory does not exist! Halting!' >&2
    exit 1
fi

# Check to make sure we have an appropriate backup directory under $originalbackupdir
backupsubdircheckcontainers=$(pwsh -Command "Get-ChildItem -Path '${originalbackupdir}/*/containers' -Directory")
backupsubdircheckvolumes=$(pwsh -Command "Get-ChildItem -Path '${originalbackupdir}/*/containers' -Directory")

if [ -z "$backupsubdircheckcontainers" ]; then
    echo "Error: Unable to find an appropriate backup directory within '${originalbackupdir}'! Halting!" >&2
    exit 1
fi

if [ -z "$backupsubdircheckvolumes" ]; then
    echo "Error: Unable to find an appropriate backup directory within '${originalbackupdir}'! Halting!" >&2
    exit 1
fi

backupdir=$(pwsh -Command "(Get-ChildItem -Path '${originalbackupdir}' -Directory | Sort-Object -Property Created)[-1].FullName")

if [ ! -d $backupdir ]; then
    echo 'Error: The backup directory does not exist! Halting!' >&2
    exit 1
fi

backupcontainersdir="${backupdir}/containers"
backupvolumesdir="${backupdir}/volumes"
backuptarfile="${backupvolumesdir}/usr_share_hassio.tar"
backupdockercmdstringpath="${backupvolumesdir}/ha_docker_cmd_string.txt"
backupdockerhaaddonspath="${backupvolumesdir}/ha_docker_addon_string_arrray.txt"

# Get the docker command used to start the homeassistant container
dockercmdstring=$(pwsh -Command "Get-Content ${backupdockercmdstringpath}")

if [ -z "$dockercmdstring" ]; then
    echo 'Error: Unable to determine dockercmdstring used to create the homeassistant container! Halting!' >&2
    exit 1
fi

addonslugsarray=($(pwsh -Command "Get-Content ${backupdockerhaaddonspath}"))

if [ -z "$addonslugsarray" ]; then
    echo 'Error: Unable to determine the names of any home assistant addon containers! Halting!' >&2
    exit 1
fi

HASSIO_TOKEN=$(echo $dockercmdstring | egrep -o "SUPERVISOR_TOKEN=\w+")
HASSIO_TOKEN="${HASSIO_TOKEN//SUPERVISOR_TOKEN=/}"

# First we need to wipe out all existing docker containers and volumes

# Stop the hassio systemctl services
sudo systemctl stop hassio-supervisor.service
sudo systemctl stop hassio-apparmor.service

# Remove all containers
docker stop $(docker ps -a -q) && docker rm $(docker ps -a -q)

# Remove all volumes
docker volume prune -f
sudo rm -rf /usr/share/hassio/*

# Next unzip /mnt/WDElements575/ldfam_share/docker_backups/volumes/usr_share_hassio.tar to /usr/share/hassio
sudo tar xvf $backuptarfile -C /usr/share/hassio

# Next, use backup-docker to restore all of the containers
backup-docker restore -d $backupdir

# Stop the hassio systemctl services
sudo systemctl start hassio-supervisor.service
sudo systemctl start hassio-apparmor.service

sleep 60

# Make sure we can resolve hassio_supervisor
hassiosupervisorip=$(docker inspect hassio_supervisor | grep "IPv4Address" | awk '{print $2}' | sed 's/"//g')
# Add the hassio_supervisor container IP Address to /etc/hosts if it isn't in there already
linetoadd="${hassiosupervisorip}       hassio_supervisor"
grep -qxF "${linetoadd}" /etc/hosts || sudo bash -c "echo '${linetoadd}' >> /etc/hosts"

# Redeploy the homeassistant container
$dockercmdstring

sleep 120

## Startup all of the addon containers
for i in "${addonslugsarray[@]}"; do slug="${i//addon_/}"; ~/go/bin/cli addons start $slug --endpoint "http://hassio_supervisor/" --api-token $HASSIO_TOKEN; done

docker ps -a