mailcow/helper-scripts/backup_and_restore.sh

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#!/bin/bash
if [[ ! -z ${MAILCOW_BACKUP_LOCATION} ]]; then
BACKUP_LOCATION="${MAILCOW_BACKUP_LOCATION}"
fi
if [[ ! ${1} =~ (backup|restore) ]]; then
echo "First parameter needs to be 'backup' or 'restore'"
exit 1
fi
if [[ ${1} == "backup" && ! ${2} =~ (crypt|vmail|redis|rspamd|postfix|mysql|all) ]]; then
echo "Second parameter needs to be 'vmail', 'crypt', 'redis', 'rspamd', 'postfix', 'mysql' or 'all'"
exit 1
fi
if [[ -z ${BACKUP_LOCATION} ]]; then
while [[ -z ${BACKUP_LOCATION} ]]; do
read -ep "Backup location (absolute path, starting with /): " BACKUP_LOCATION
done
fi
if [[ ! ${BACKUP_LOCATION} =~ ^/ ]]; then
echo "Backup directory needs to be given as absolute path (starting with /)."
exit 1
fi
if [[ -f ${BACKUP_LOCATION} ]]; then
echo "${BACKUP_LOCATION} is a file!"
exit 1
fi
if [[ ! -d ${BACKUP_LOCATION} ]]; then
echo "${BACKUP_LOCATION} is not a directory"
read -p "Create it now? [y|N] " CREATE_BACKUP_LOCATION
if [[ ! ${CREATE_BACKUP_LOCATION,,} =~ ^(yes|y)$ ]]; then
exit 1
else
mkdir ${BACKUP_LOCATION}
chmod 755 ${BACKUP_LOCATION}
fi
else
if [[ ${1} == "backup" ]] && [[ -z $(echo $(stat -Lc %a ${BACKUP_LOCATION}) | grep -oE '[0-9][0-9][5-7]') ]]; then
echo "${BACKUP_LOCATION} is not write-able for others, that's required for a backup."
exit 1
fi
fi
BACKUP_LOCATION=$(echo ${BACKUP_LOCATION} | sed 's#/$##')
SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
COMPOSE_FILE=${SCRIPT_DIR}/../docker-compose.yml
echo "Using ${BACKUP_LOCATION} as backup/restore location."
echo
source ${SCRIPT_DIR}/../mailcow.conf
CMPS_PRJ=$(echo $COMPOSE_PROJECT_NAME | tr -cd "[A-Za-z-_]")
function backup() {
DATE=$(date +"%Y-%m-%d-%H-%M-%S")
mkdir -p "${BACKUP_LOCATION}/mailcow-${DATE}"
chmod 755 "${BACKUP_LOCATION}/mailcow-${DATE}"
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cp "${SCRIPT_DIR}/../mailcow.conf" "${BACKUP_LOCATION}/mailcow-${DATE}"
while (( "$#" )); do
case "$1" in
vmail|all)
docker run --rm \
-v ${BACKUP_LOCATION}/mailcow-${DATE}:/backup \
-v $(docker volume ls -qf name=${CMPS_PRJ}_vmail-vol-1):/vmail \
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debian:stretch-slim /bin/tar --warning='no-file-ignored' -Pcvpzf /backup/backup_vmail.tar.gz /vmail
;;&
crypt|all)
docker run --rm \
-v ${BACKUP_LOCATION}/mailcow-${DATE}:/backup \
-v $(docker volume ls -qf name=${CMPS_PRJ}_crypt-vol-1):/crypt \
debian:stretch-slim /bin/tar --warning='no-file-ignored' -Pcvpzf /backup/backup_crypt.tar.gz /crypt
;;&
redis|all)
docker exec $(docker ps -qf name=redis-mailcow) redis-cli save
docker run --rm \
-v ${BACKUP_LOCATION}/mailcow-${DATE}:/backup \
-v $(docker volume ls -qf name=${CMPS_PRJ}_redis-vol-1):/redis \
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debian:stretch-slim /bin/tar --warning='no-file-ignored' -Pcvpzf /backup/backup_redis.tar.gz /redis
;;&
rspamd|all)
docker run --rm \
-v ${BACKUP_LOCATION}/mailcow-${DATE}:/backup \
-v $(docker volume ls -qf name=${CMPS_PRJ}_rspamd-vol-1):/rspamd \
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debian:stretch-slim /bin/tar --warning='no-file-ignored' -Pcvpzf /backup/backup_rspamd.tar.gz /rspamd
;;&
postfix|all)
docker run --rm \
-v ${BACKUP_LOCATION}/mailcow-${DATE}:/backup \
-v $(docker volume ls -qf name=${CMPS_PRJ}_postfix-vol-1):/postfix \
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debian:stretch-slim /bin/tar --warning='no-file-ignored' -Pcvpzf /backup/backup_postfix.tar.gz /postfix
;;&
mysql|all)
SQLIMAGE=$(grep -iEo '(mysql|mariadb)\:.+' ${COMPOSE_FILE})
docker run --rm \
--network $(docker network ls -qf name=${CMPS_PRJ}_mailcow-network) \
-v $(docker volume ls -qf name=${CMPS_PRJ}_mysql-vol-1):/var/lib/mysql/ \
--entrypoint= \
-v ${BACKUP_LOCATION}/mailcow-${DATE}:/backup \
${SQLIMAGE} /bin/sh -c "mysqldump -hmysql -uroot -p${DBROOT} --all-databases | gzip > /backup/backup_mysql.gz"
;;
esac
shift
done
}
function restore() {
docker stop $(docker ps -qf name=watchdog-mailcow)
RESTORE_LOCATION="${1}"
shift
while (( "$#" )); do
case "$1" in
vmail)
docker stop $(docker ps -qf name=dovecot-mailcow)
docker run -it --rm \
-v ${RESTORE_LOCATION}:/backup \
-v $(docker volume ls -qf name=${CMPS_PRJ}_vmail-vol-1):/vmail \
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debian:stretch-slim /bin/tar -Pxvzf /backup/backup_vmail.tar.gz
docker start $(docker ps -aqf name=dovecot-mailcow)
echo
echo "In most cases it is not required to run a full resync, you can run the command printed below at any time after testing wether the restore process broke a mailbox:"
echo
echo "docker exec $(docker ps -qf name=dovecot-mailcow) doveadm force-resync -A '*'"
echo
read -p "Force a resync now? [y|N] " FORCE_RESYNC
if [[ ${FORCE_RESYNC,,} =~ ^(yes|y)$ ]]; then
docker exec $(docker ps -qf name=dovecot-mailcow) doveadm force-resync -A '*'
else
echo "OK, skipped."
fi
;;
redis)
docker stop $(docker ps -qf name=redis-mailcow)
docker run -it --rm \
-v ${RESTORE_LOCATION}:/backup \
-v $(docker volume ls -qf name=${CMPS_PRJ}_redis-vol-1):/redis \
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debian:stretch-slim /bin/tar -Pxvzf /backup/backup_redis.tar.gz
docker start $(docker ps -aqf name=redis-mailcow)
;;
crypt)
docker stop $(docker ps -qf name=dovecot-mailcow)
docker run -it --rm \
-v ${RESTORE_LOCATION}:/backup \
-v $(docker volume ls -qf name=${CMPS_PRJ}_crypt-vol-1):/crypt \
debian:stretch-slim /bin/tar -Pxvzf /backup/backup_crypt.tar.gz
docker start $(docker ps -aqf name=dovecot-mailcow)
;;
rspamd)
docker stop $(docker ps -qf name=rspamd-mailcow)
docker run -it --rm \
-v ${RESTORE_LOCATION}:/backup \
-v $(docker volume ls -qf name=${CMPS_PRJ}_rspamd-vol-1):/rspamd \
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debian:stretch-slim /bin/tar -Pxvzf /backup/backup_rspamd.tar.gz
docker start $(docker ps -aqf name=rspamd-mailcow)
;;
postfix)
docker stop $(docker ps -qf name=postfix-mailcow)
docker run -it --rm \
-v ${RESTORE_LOCATION}:/backup \
-v $(docker volume ls -qf name=${CMPS_PRJ}_postfix-vol-1):/postfix \
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debian:stretch-slim /bin/tar -Pxvzf /backup/backup_postfix.tar.gz
docker start $(docker ps -aqf name=postfix-mailcow)
;;
mysql)
SQLIMAGE=$(grep -iEo '(mysql|mariadb)\:.+' ${COMPOSE_FILE})
docker stop $(docker ps -qf name=mysql-mailcow)
docker run \
-it --rm \
-v $(docker volume ls -qf name=${CMPS_PRJ}_mysql-vol-1):/var/lib/mysql/ \
--entrypoint= \
-u mysql \
-v ${RESTORE_LOCATION}:/backup \
${SQLIMAGE} /bin/sh -c "mysqld --skip-grant-tables & \
until mysqladmin ping; do sleep 3; done && \
echo Restoring... && \
gunzip < backup/backup_mysql.gz | mysql -uroot && \
mysql -uroot -e SHUTDOWN;"
docker start $(docker ps -aqf name=mysql-mailcow)
;;
esac
shift
done
docker start $(docker ps -aqf name=watchdog-mailcow)
}
if [[ ${1} == "backup" ]]; then
backup ${@,,}
elif [[ ${1} == "restore" ]]; then
i=1
declare -A FOLDER_SELECTION
if [[ $(find ${BACKUP_LOCATION}/mailcow-* -maxdepth 1 -type d 2> /dev/null| wc -l) -lt 1 ]]; then
echo "Selected backup location has no subfolders"
exit 1
fi
for folder in $(ls -d ${BACKUP_LOCATION}/mailcow-*/); do
echo "[ ${i} ] - ${folder}"
FOLDER_SELECTION[${i}]="${folder}"
((i++))
done
echo
input_sel=0
while [[ ${input_sel} -lt 1 || ${input_sel} -gt ${i} ]]; do
read -p "Select a restore point: " input_sel
done
i=1
echo
declare -A FILE_SELECTION
RESTORE_POINT="${FOLDER_SELECTION[${input_sel}]}"
if [[ -z $(find "${FOLDER_SELECTION[${input_sel}]}" -maxdepth 1 -type f -regex ".*\(redis\|rspamd\|mysql\|crypt\|vmail\|postfix\).*") ]]; then
echo "No datasets found"
exit 1
fi
for file in $(ls -f "${FOLDER_SELECTION[${input_sel}]}"); do
if [[ ${file} =~ vmail ]]; then
echo "[ ${i} ] - Mail directory (/var/vmail)"
FILE_SELECTION[${i}]="vmail"
((i++))
elif [[ ${file} =~ crypt ]]; then
echo "[ ${i} ] - Crypt data"
FILE_SELECTION[${i}]="crypt"
((i++))
elif [[ ${file} =~ redis ]]; then
echo "[ ${i} ] - Redis DB"
FILE_SELECTION[${i}]="redis"
((i++))
elif [[ ${file} =~ rspamd ]]; then
echo "[ ${i} ] - Rspamd data"
FILE_SELECTION[${i}]="rspamd"
((i++))
elif [[ ${file} =~ postfix ]]; then
echo "[ ${i} ] - Postfix data"
FILE_SELECTION[${i}]="postfix"
((i++))
elif [[ ${file} =~ mysql ]]; then
echo "[ ${i} ] - SQL DB"
FILE_SELECTION[${i}]="mysql"
((i++))
fi
done
echo
input_sel=0
while [[ ${input_sel} -lt 1 || ${input_sel} -gt ${i} ]]; do
read -p "Select a dataset to restore: " input_sel
done
echo "Restoring ${FILE_SELECTION[${input_sel}]} from ${RESTORE_POINT}..."
restore "${RESTORE_POINT}" ${FILE_SELECTION[${input_sel}]}
fi