add backup.sh

backup.sh

@@ -0,0 +1,108 @@
+#!/bin/bash
+
+set -uo pipefail
+trap 's=$?; echo "$0: error on line "$LINENO": $BASH_COMMAND"; exit $s' ERR
+IFS=$'\n\t'
+
+# ~~~
+
+reverse() {
+    # first argument is the array to reverse
+    # second is the output array
+    declare -n arr="$1" rev="$2"
+    for i in "${arr[@]}"
+    do
+        rev=("$i" "${rev[@]}")
+    done
+}
+
+function get_age_days {
+    local seconds_in_day=86400
+
+    local given_date_epoch=$(date -d "${1}" +%s)
+    local current_date_epoch=$(date +%s)
+
+    age=$(echo "(${current_date_epoch} - ${given_date_epoch}) / ${seconds_in_day}" | bc)
+
+    echo ${age}
+}
+
+# ~~~
+
+BACKUP_NAME="$(date --iso-8601=seconds)"
+PATH_TO_BACKUPS="${HOME}/backups/snapshots"
+BACKUP_RETENTION_DAYS=14
+
+REMOTE_DATA_PATH="/opt/mcsmanager/daemon/data/InstanceData/minecraft/dev"
+LOCAL_DATA_PATH="${HOME}/backups/data"
+
+SSH_CONNECTION="mcsmanager@daemon.panel.bebrashield.net"
+SSH_KEY_PATH="${HOME}/.ssh/id_ed25519"
+
+# Order: proxy, limbo, lobby, survival, mariadb
+INSTANCE_UUIDS=(7cf021ac0c1e48c0bbfed308b3f93723 cd5e8059ddb14aa3abaee014585ef8c0 63309fcbc86d4c28a90c152bcc7d623f 29ba4cc6e35b43dea90931db6286bac0 1b0120b79fd54f55b7e920b76c4ef509)
+reverse INSTANCE_UUIDS REV_INSTANCE_UUIDS
+
+APIKEY="xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
+DAEMONID="a477ff5827b44a1c8c95e035c1da6c2c"
+
+# ~~~
+
+# Stop all containers on remote which data will be copied to local
+for uuid in "${INSTANCE_UUIDS[@]}"; do
+    echo "Stopping ${uuid}..."
+    curl --fail-with-body \
+        -H 'Content-Type: application/json; charset=utf-8' \
+        -H 'X-Requested-With: XMLHttpRequest' \
+        "https://panel.bebrashield.net/api/protected_instance/stop?apikey=${APIKEY}&daemonId=${DAEMONID}&uuid=${uuid}"
+    echo ''
+    echo "Stopped ${uuid}."
+    sleep 10
+done
+
+
+echo "Creating backup of old files..."
+
+# Create backup of old data
+btrfs subvolume snapshot -r ${LOCAL_DATA_PATH} ${PATH_TO_BACKUPS}/${BACKUP_NAME}
+
+echo "Backup of old files created."
+
+
+echo "Copying files..."
+
+# Copy data to local machine
+rsync --delete-after --archive --no-inc-recursive --progress --info progress2 --compress --partial --recursive --rsh "ssh -i ${SSH_KEY_PATH}" ${SSH_CONNECTION}:${REMOTE_DATA_PATH} ${LOCAL_DATA_PATH}
+
+echo "Files copied."
+
+
+echo "Removing old backups..."
+
+# Remove old backups
+for path_to_snapshot in $(find ${PATH_TO_BACKUPS}/* -prune -print | sort -r); do
+    snapshot_name=$(basename "${path_to_snapshot}")
+    age_days=$(get_age_days "${snapshot_name}")
+
+    if [ ${age_days} -lt ${BACKUP_RETENTION_DAYS} ]; then
+        echo "Skipping '"${path_to_snapshot}"'. Age in days is ${age_days}"
+    else
+        btrfs property set ${path_to_snapshot} ro false
+        btrfs subvolume delete ${path_to_snapshot}
+    fi
+done
+
+echo "Old backups removed."
+
+
+# Start all containers on remote which data was copied to local
+for uuid in "${REV_INSTANCE_UUIDS[@]}"; do
+    echo "Starting ${uuid}..."
+    curl --fail-with-body  \
+        -H 'Content-Type: application/json; charset=utf-8' \
+        -H 'X-Requested-With: XMLHttpRequest' \
+        "https://panel.bebrashield.net/api/protected_instance/open?apikey=${APIKEY}&daemonId=${DAEMONID}&uuid=${uuid}"
+    echo ''
+    echo "Started ${uuid}."
+    sleep 10
+done