forked from coop-cloud/backup-bot-two
Philipp Rothmann
24d2c0e85b
* Backupbot will now copy all volumes from a service with backupbot.enabled = 'true' label from the /var/lib/docker/volumes/ path directly. This reduces the resource overhead of copying stuff from one volume to another. Recipes need to be adjustet that db-dumps are saved into a volume now! * Remove the Dockerfile and move stuff into a entrypoint. This simplifies the whole versioning thing and makes this "just" a recipe Co-authored-by: Moritz < moritz.m@local-it.org>
119 lines
3.3 KiB
Bash
Executable File
119 lines
3.3 KiB
Bash
Executable File
#!/bin/bash
|
|
|
|
set -e
|
|
|
|
server_name="${SERVER_NAME:?SERVER_NAME not set}"
|
|
|
|
restic_password_file="${RESTIC_PASSWORD_FILE:?RESTIC_PASSWORD_FILE not set}"
|
|
|
|
restic_host="${RESTIC_HOST:?RESTIC_HOST not set}"
|
|
|
|
backup_paths=()
|
|
|
|
# shellcheck disable=SC2153
|
|
ssh_key_file="${SSH_KEY_FILE}"
|
|
s3_key_file="${AWS_SECRET_ACCESS_KEY_FILE}"
|
|
|
|
restic_repo=
|
|
restic_extra_options=
|
|
|
|
if [ -n "$ssh_key_file" ] && [ -f "$ssh_key_file" ]; then
|
|
restic_repo="sftp:$restic_host:/$server_name"
|
|
|
|
# Only check server against provided SSH_HOST_KEY, if set
|
|
if [ -n "$SSH_HOST_KEY" ]; then
|
|
tmpfile=$(mktemp)
|
|
echo "$SSH_HOST_KEY" >>"$tmpfile"
|
|
echo "using host key $SSH_HOST_KEY"
|
|
ssh_options="-o 'UserKnownHostsFile $tmpfile'"
|
|
elif [ "$SSH_HOST_KEY_DISABLE" = "1" ]; then
|
|
echo "disabling SSH host key checking"
|
|
ssh_options="-o 'StrictHostKeyChecking=No'"
|
|
else
|
|
echo "neither SSH_HOST_KEY nor SSH_HOST_KEY_DISABLE set"
|
|
fi
|
|
restic_extra_options="sftp.command=ssh $ssh_options -i $ssh_key_file $restic_host -s sftp"
|
|
fi
|
|
|
|
if [ -n "$s3_key_file" ] && [ -f "$s3_key_file" ] && [ -n "$AWS_ACCESS_KEY_ID" ]; then
|
|
AWS_SECRET_ACCESS_KEY="$(cat "${s3_key_file}")"
|
|
export AWS_SECRET_ACCESS_KEY
|
|
restic_repo="s3:$restic_host:/$server_name"
|
|
fi
|
|
|
|
if [ -z "$restic_repo" ]; then
|
|
echo "you must configure either SFTP or S3 storage, see README"
|
|
exit 1
|
|
fi
|
|
|
|
echo "restic_repo: $restic_repo"
|
|
|
|
# Pre-bake-in some default restic options
|
|
_restic() {
|
|
if [ -z "$restic_extra_options" ]; then
|
|
# shellcheck disable=SC2068
|
|
restic -p "$restic_password_file" \
|
|
--quiet -r "$restic_repo" \
|
|
$@
|
|
else
|
|
# shellcheck disable=SC2068
|
|
restic -p "$restic_password_file" \
|
|
--quiet -r "$restic_repo" \
|
|
-o "$restic_extra_options" \
|
|
$@
|
|
fi
|
|
}
|
|
|
|
if [ -n "$SERVICES_OVERRIDE" ]; then
|
|
# this is fine because docker service names should never include spaces or
|
|
# glob characters
|
|
# shellcheck disable=SC2206
|
|
services=($SERVICES_OVERRIDE)
|
|
else
|
|
mapfile -t services < <(docker service ls --format '{{ .Name }}')
|
|
fi
|
|
|
|
post_commands=()
|
|
if [[ \ $*\ != *\ --skip-backup\ * ]]; then
|
|
|
|
for service in "${services[@]}"; do
|
|
echo "service: $service"
|
|
details=$(docker service inspect "$service" --format "{{ json .Spec.Labels }}")
|
|
if echo "$details" | jq -r '.["backupbot.backup"]' | grep -q 'true'; then
|
|
pre=$(echo "$details" | jq -r '.["backupbot.backup.pre-hook"]')
|
|
post=$(echo "$details" | jq -r '.["backupbot.backup.post-hook"]')
|
|
container=$(docker container ls -f "name=$service" --format '{{ .ID }}')
|
|
stack_name=$(echo "$details" | jq -r '.["com.docker.stack.namespace"]')
|
|
|
|
if [ "$pre" != "null" ]; then
|
|
# run the precommand
|
|
echo "executing precommand $pre in container $container"
|
|
docker exec "$container" sh -c "$pre"
|
|
fi
|
|
if [ "$post" != "null" ]; then
|
|
# append post command
|
|
post_commands+=("docker exec $container sh -c \"$post\"")
|
|
fi
|
|
|
|
# add volume paths to backup path
|
|
backup_paths+=(/var/lib/docker/volumes/${stack_name}_*)
|
|
fi
|
|
done
|
|
|
|
# check if restic repo exists, initialise if not
|
|
if [ -z "$(_restic cat config)" ] 2>/dev/null; then
|
|
echo "initializing restic repo"
|
|
_restic init
|
|
fi
|
|
fi
|
|
|
|
if [[ \ $*\ != *\ --skip-upload\ * ]]; then
|
|
_restic backup --host "$server_name" --tag coop-cloud "${backup_paths[@]}"
|
|
fi
|
|
|
|
# run post commands
|
|
for post in "${post_commands[@]}"; do
|
|
echo "executing postcommand $post"
|
|
eval "$post"
|
|
done
|