NextCloudBackup/root/scripts/borgbackup.sh

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#!/bin/bash
#######
### Backup NextCloud13 installation to external repo using Borg Backup
### Assuming both NextCloud & Borg setups as outlined in their respecitive
### series at https://mytechiethoughts.com
###
### Events:
### 1. Copy 503 error page to stop NGINX from serving web clients.
### (this depends on a complementary NGINX configuration)
### 2. Put NextCloud in maintenance mode to prevent logins and changes.
### 3. SQLdump from NextCloud.
### 4. Borg backup all files from xtraLocations.
### 5. Borg backup NextCloud data and files.
### 6. Put NextCloud back into operating mode.
### 7. Delete 503 error page so NGINX can serve web clients again.
#######
### Script variables -- please ensure they are accurate!
# web user on your system (default: www-data)
webUser=www-data
# FULL path to NGINX webroot (default: /usr/share/nginx/html)
webroot=/usr/share/nginx/html
# FULL path to NextCloud root directory
# By default, this is a folder within your webroot. If you setup is different
# then provide the FULL path here
# (default: webroot/nextcloud)
ncroot="$webroot/nextcloud"
# name of 503-error page (default: 503-error.html)
# MUST be in the same directory as THIS script
err503FileName=503-backup.html
# desired directory for SQLdump -- will be created if necessary
# (default: /SQLdump)
sqlDumpDir=/SQLdump
# FULL path to SQL details file (explained in blog)
# This is a 4 line file in the EXACT format:
#sqlHostMachineName
#sqlDBUsername
#sqlDBPassword
#sqlDBName
#(default: /root/sqlDetails)
sqlDetails=/root/sqlDetails
# Borg BASE directory (default: /var/borgbackup)
borgBaseDir=/var/borgbackup
# FULL path to your remote server SSH private keyfile (no default)
borgRemoteSSHKeyfile=/var/borgbackup/rsync.key
# Borg remote path (default for rsync: borg1)
borgRemotePath=borg1
# FULL path to Borg repo details file (explained in blog)
# This is a 2 line file in the EXACT format:
# repo-name in format user@server.tld:repo
# passphrase
# This ensures no sensitive details are stored in this script :-)
# (default: borgBaseDir/repoDetails.borg)
borgDetails="$borgBaseDir/repoDetails.borg"
# FULL path to the extra source-list file (explained in blog)
# This file lists any extra files and directories that should be included
# in the backup along with the standard mailcow files/directories this script
# will be including.
# One source-entry per line.
# No spaces, comments or any other extraneous information, just the files/dirs
# Directories must end with tailing slash
# (default: borgBaseDir/xtraLocations.borg)
borgXtraFiles="$borgBaseDir/xtraLocations.borg"
# Pruning options for borg archive (see BorgBackup documentation for details)
# This default example keeps all backups within the last 14 days, 12 weeks
# of end-of-week backups and 6 months of end-of-month backups.
borgPrune='--keep-within=14d --keep-weekly=12 --keep-monthly=6'
# desired name and location of log file for this script
# (default: /var/log/mailcow_backup.log)
logFile=/var/log/borgbackup.log
### Do NOT edit below this line
## Ensure script is running as root (required) otherwise, exit
#if [ $(id -u) -ne 0 ]; then
# echo -e "\e[1;31m[`date +%Y-%m-%d` `date +%H:%M:%S`] This script MUST" \
# "be run as ROOT."
# echo -e "\e[4;31mScript aborted\e[0;31m.\e[0m"
# exit 1
#fi
### elevate script -- used during program testing
if [ $EUID != 0 ]; then
sudo "$0" "$scriptPath"
exit $?
fi
## Write script execution start in log file
echo -e "\e[1;32m[`date +%Y-%m-%d` `date +%H:%M:%S`]" \
"--Begin backup operations--\e[0m" >> $logFile
## Parse supplied variables and determine additional script vars
scriptPath="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
err503FullPath="$scriptPath/$err503FileName"
## Export logfle location for use by external programs
export logFile="$logFile"
## Check for sqlDumpDir and create if necessary
if [ -e $sqlDumpDir ]; then
echo -e "\e[0m[`date +%Y-%m-%d` `date +%H:%M:%S`] Confirmed:" \
"sqlDumpDir exists at \e[0;33m$sqlDumpDir\e[0m" >> $logFile
else
echo -e "\e[0;36m[`date +%Y-%m-%d` `date +%H:%M:%S`] Creating:" \
"\e[0;33m$sqlDumpDir\e[0;36m..." >> $logFile
mkdir $sqlDumpDir &>> $logFile
# confirm creation successful
if [ -e $sqlDumpDir ]; then
echo -e "...done\e[0m" >> $logFile
else
echo -e "\e[1;31m[`date +%Y-%m-%d` `date +%H:%M:%S`]" \
"--Error-- There was a problem creating $sqlDumpDir." >> $logFile
echo -e "\e[4;31m--Error-- Script aborted\e[0;31m.\e[0m" >> $logFile
exit 101
fi
fi
## Create unique filename for sqlDump file
sqlDumpFile="backup_${DBNAME}_`date +%Y%m%d_%H%M%S`.sql"
echo -e "\e[0m[`date +%Y-%m-%d` `date +%H:%M:%S`] mysql dump file will be" \
"stored at:" >> $logFile
echo -e "\e[0;33m$sqlDumpDir/$sqlDumpFile\e[0m" >> $logFile
## Find 503 error page and copy to NGINX webroot
## File must be in the same location as this script
## IF file is not found, log warning but continue script
if [ -e $err503FullPath ]; then
echo -e "\e[0m[`date +%Y-%m-%d` `date +%H:%M:%S`] Found 503 error" \
"page at:" >> $logFile
echo -e "\e[0;33m$err503FullPath\e[0m" >> $logFile
# copy 503 to webroot
echo -e "\e[1;36m[`date +%Y-%m-%d` `date +%H:%M:%S`] Copying 503 error" \
"page to NGINX webroot..." >> $logFile
cp $err503FullPath $webroot/ &>> $logFile
# check file actually copied
if [ -e "$webroot/$err503FileName" ]; then
echo -e "\e[0;36m...done\e[0m" >> $logFile
else
echo -e "\e[1;33m[`date +%Y-%m-%d` `date +%H:%M:%S`] --Warning--" \
"There was a problem copying the 503 error page to" \
"webroot." >> $logFile
echo -e "\e[1;33m--Warning-- Web users will NOT be notified the" \
"server is down.\e[0m" >> $logFile
echo -e "Script will continue processing..." >> $logFile
fi
else
echo -e "\e[1;33m[`date +%Y-%m-%d` `date +%H:%M:%S`] --Warning--" \
"Could not locate 503 error page at \e[0;33m$err503FullPath" >> $logFile
echo -e "\e[1;33m--Warning-- This file should be re-created" \
"ASAP." >> $logFile
echo -e "\e[1;33m--Warning-- Web users will NOT be notified the" \
"server is down.\e[0m" >> $logFile
echo -e "Script will continue processing..." >> $logFile
fi
## Put NextCloud in maintenance mode
echo -e "\e[1;36m[`date +%Y-%m-%d` `date +%H:%M:%S`] Putting NextCloud" \
"in maintenance mode..." >> $logFile
sudo -u ${webUser} php "${ncroot}/occ maintenance:mode --on" 2>> $logFile
# verify
if [ "$?" = "0" ]; then
echo -e "\e[0;36m...done\e[0m" >> $logFile
else
echo -e "\e[1;31m--Error-- There was a problem putting NextCloud" \
"into maintenance mode" >> $logFile
echo -e "\e[4;31mScript aborted\e[0;31m.\e[0m" >> $logFile
exit 100
fi
## Read sqlDetails file and extract necessary information
mapfile -t sqlParams < $sqlDetails
## Dump SQL
echo -e "\e[1;36m[`date +%Y-%m-%d` `date +%H:%M:%S`]" \
"Dumping SQL..." >> $logFile
mysqldump --single-transaction -h${sqlParams[0]} -u${sqlParams[1]} -p${sqlParams[2]} ${sqlParams[3]} > "$sqlDumpDir/$sqlDumpFile"
# verify
if [ "$?" = "0" ]; then
echo -e "\e[0;36m...done\e[0m" >> $logFile
else
echo -e "\e[1;31m--Error-- There was a problem dumping SQL." >> $logFile
echo -e "\e[4;31mScript aborted\e[0;31m.\e[0m" >> $logFile
exit 102
fi
# Gracefully exit
exit 0