sovereign-stack/deployment/migrate.sh

#!/bin/bash

set -eu
cd "$(dirname "$0")"


# check if there are any uncommited changes. It's dangerous to 
# alter production systems when you have commits to make or changes to stash.
if git update-index --refresh | grep -q "needs update"; then
    echo "ERROR: You have uncommited changes! You MUST commit or stash all changes to continue."
    exit 1
fi


USER_SAYS_YES=false

for i in "$@"; do
    case $i in
        -y)
            USER_SAYS_YES=true
            shift
        ;;
        *)
        echo "Unexpected option: $1"
        ;;
    esac
done

. ../defaults.sh

. ./remote_env.sh

. ./project_env.sh



# Check to see if any of the VMs actually don't exist. 
# (we only migrate instantiated vms)
for VM in www btcpayserver; do
    LXD_NAME="$VM-${DOMAIN_NAME//./-}"

    # if the VM doesn't exist, the we emit an error message and hard quit.
    if ! lxc list --format csv | grep -q "$LXD_NAME"; then
        echo "ERROR: there is no VM named '$LXD_NAME'. You probably need to run ss-deploy again."
        exit 1
    fi
done

BTCPAY_RESTORE_ARCHIVE_PATH="$SITES_PATH/$PRIMARY_DOMAIN/backups/btcpayserver/$(date +%s).tar.gz"
echo "INFO: The BTCPAY_RESTORE_ARCHIVE_PATH for this migration will be: $BTCPAY_RESTORE_ARCHIVE_PATH" 

# first we run ss-deploy --stop
# this grabs a backup of all data (backups are on by default) and saves them to the management machine
# the --stop flag ensures that services do NOT come back online.
# by default, we grab a backup. 

# first, let's grab the GIT commit from the remote machine.
export DOMAIN_NAME="$PRIMARY_DOMAIN"
export SITE_PATH="$SITES_PATH/$PRIMARY_DOMAIN"

# source the site path so we know what features it has.
source ../defaults.sh
source "$SITE_PATH/site_definition"
source ./project/domain_env.sh

GIT_COMMIT_ON_REMOTE_HOST="$(ssh ubuntu@$BTCPAY_FQDN cat /home/ubuntu/.ss-githead)"
cd project/
git checkout "$GIT_COMMIT_ON_REMOTE_HOST"
cd -
sleep 5

# run deploy which backups up everything, but doesnt restart any services.
bash -c "./project/deploy.sh --stop --no-cert-renew --backup-archive-path=$BTCPAY_RESTORE_ARCHIVE_PATH"

# call the destroy script. If user proceed, then user data is DESTROYED!
USER_SAYS_YES="$USER_SAYS_YES" ./destroy.sh

cd project/
git checkout "$TARGET_PROJECT_GIT_COMMIT"
cd -

sleep 5
# Then we can run a restore operation and specify the backup archive at the CLI.
bash -c "./project/deploy.sh -y --restore-www --restore-btcpay --backup-archive-path=$BTCPAY_RESTORE_ARCHIVE_PATH"