From 10e235ab0b431b6726333118a3032f2e3e23c4ec Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Roger=20P=C3=A0mies?= <roger@estudiset.cat>
Date: Thu, 30 Nov 2023 23:12:24 +0100
Subject: [PATCH] new nextcloud backup script with no dependencies

---
 backup_nc.sh | 85 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 85 insertions(+)
 create mode 100644 backup_nc.sh

diff --git a/backup_nc.sh b/backup_nc.sh
new file mode 100644
index 0000000..85ef974
--- /dev/null
+++ b/backup_nc.sh
@@ -0,0 +1,85 @@
+#!/bin/bash
+
+###################################################################################
+# Nextcloud Backups as incremental mode, using rdiff-backup
+#
+# 1. Backup database and send to remote backups server throught rsync using
+# ssh public/private key configuration.
+# 2. Set X days to preserve db backups
+# 3. Backup data folder of nextcloud using rdiff-backup (https://rdiff-backup.net/)
+# 4. Set X days to preserve rdiff-backups increments
+# 5. Get report statistics of rdiff-backup and send push message throught gotify
+# self-hosted server (https://gotify.net/).
+#
+# Tools needed: mysqldump, gzip. rsync, rdiff-backup, curl
+###################################################################################
+
+PATH=$PATH:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin
+
+# variables push notifications
+readonly GOTIFY_TOKEN="ABlynaRwExiItgY"
+readonly GOTIFY_HOST="https://push.studi7.com"
+readonly GOTIFY_PRIORITY=5
+# backup db variables
+readonly BACKUP_DB_FILE="nextcloud-sqlbkp-"`date +\%Y\%m\%d`".sql"
+readonly DB_HOST="localhost"
+readonly DB_USER="nextcloud"
+readonly DB_PASS="3mZlNTeS"
+readonly DB_NAME="nextcloud"
+# backup data variables
+readonly NEXTCLOUD_DATA="/mnt/md0/nextcloud/data"
+readonly INCLUDE_LIST="include-list"
+# remote settings
+readonly REMOTE_SERVER="backups.studi7.com"
+readonly REMOTE_PATH="/home/debian/backups/studi7/nextcloud"
+readonly REMOTE_NC_DATA_FOLDER="files"
+readonly REMOTE_NC_DB_FOLDER="db"
+readonly BACKUP_PRESERVE_DAYS=60
+
+# create include list file and set exclude logs
+touch $INCLUDE_LIST
+cat > $INCLUDE_LIST <<EOF
+- **nextcloud.log
+- **nextcloud.log*
+- **updater.log
+EOF
+
+# init notification message
+MESSAGE="Backup task init: **"`date +"%d/%m/%Y %H:%M:%S"`"**  \r"
+
+# dump and backup db nextcloud handycat and rsync deleting origin
+mysqldump --single-transaction --verbose -h $DB_HOST -u $DB_USER -p$DB_PASS $DB_NAME > $BACKUP_DB_FILE
+gzip $BACKUP_DB_FILE
+# TODO
+# force create multiple paths (mkdir -p) if not exist with rsync trick
+# https://www.schwertly.com/2013/07/forcing-rsync-to-create-a-remote-path-using-rsync-path/
+rsync -AaxzPh --remove-source-files "$BACKUP_DB_FILE.gz" "$REMOTE_SERVER:$REMOTE_PATH/$REMOTE_NC_DB_FOLDER"
+
+# clear X days old remote db backups
+ssh $REMOTE_SERVER 'bash -s' << EOF
+find "$REMOTE_PATH/$REMOTE_NC_DB_FOLDER" -maxdepth 1 -mtime +$BACKUP_PRESERVE_DAYS -print -exec "rm" -R {} \;
+EOF
+
+# rdiff-backup all data of nextcloud
+OUT=$(rdiff-backup backup --print-statistics --include-globbing-filelist $INCLUDE_LIST $NEXTCLOUD_DATA \
+      "$REMOTE_SERVER::$REMOTE_PATH/$REMOTE_NC_DATA_FOLDER")
+# set output lines into array and append notification message
+readarray -t stats <<<"$OUT"
+for val in "${stats[@]}"; do
+    line=$(echo $val | tr -d '-')
+    MESSAGE="${MESSAGE} $line  \r"
+done
+
+# clear X days old increments of backup data
+rdiff-backup remove increments --older-than "${BACKUP_PRESERVE_DAYS}D" \
+  "$REMOTE_SERVER::$REMOTE_PATH/$REMOTE_NC_DATA_FOLDER"
+
+MESSAGE="${MESSAGE} Backup task end: **"`date +"%d/%m/%Y %H:%M:%S"`"**  \r"
+
+rm $INCLUDE_LIST
+
+# send gotify notification
+TITLE="NC $(hostname) Backup"
+EXTRAS="{\"client::display\": {\"contentType\": \"text/markdown\"}}"
+curl -X POST "$GOTIFY_HOST/message?token=$GOTIFY_TOKEN" -H "accept: application/json" -H "Content-Type: application/json" \
+  -d "{ \"message\": \"${MESSAGE}\", \"priority\": ${GOTIFY_PRIORITY}, \"title\": \"${TITLE}\", \"extras\": ${EXTRAS} }"