79 lines
2.3 KiB
Bash
79 lines
2.3 KiB
Bash
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#!/bin/bash
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# Backup Nextcloud database in a Kubernetes environment.
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# Usage: backup-database <destination>
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usage() {
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>&2 printf "Usage: %s <destination>\n" "${0}"
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exit "${1:-1}"
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}
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# Get options
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while getopts ":e:" option; do
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case "${option}" in
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e)
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if ! [ -f "${OPTARG}" ]; then
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>&2 printf "Error: Specified environment file does not exist: '%s'.\n" "${OPTARG}"
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elif ! [ -r "${OPTARG}" ]; then
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>&2 printf "Error: Specified environment file is not readable: '%s'.\n" "${OPTARG}"
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fi
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env_file="${OPTARG}"
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;;
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*)
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>&2 printf "Error: Invalid option: '%s'.\n" "${option}"
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usage
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;;
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esac
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done
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# Check arguments.
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if [ $# -ne 1 ]; then
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>&2 printf "Error: You need to specify a destination.\n"
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usage
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elif ! [ -d "${1}" ]; then
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>&2 printf "Error: Specified destination does not exist or is not readable : '%s'.\n" "${1}"
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usage
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else
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destination="${1}"
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fi
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# Filename for database backup
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database_backupfile="nextcloud-sqlbkp_$(date +'%Y%m%d').bak"
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# Retrieve container names
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base_container="$( docker ps --format '{{.Names}}' | grep -E 'nextcloud-2_nextcloud-2-[0-9a-z]{10}-[0-9a-z]{5}' )"
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database_container="$( docker ps --format '{{.Names}}' | grep postgres_nextcloud-2-cnpg-main-1 )"
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if ! [[ -n "${base_container}" && -n "${database_container}" ]]; then
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>&2 printf "Error: Not all containers could be found.\n"
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exit 2
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fi
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# Abort entire script if any command fails
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set -e
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# Turn on maintenance mode
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docker exec "${base_container}" php occ maintenance:mode --on
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# Database backup
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echo 'Backing up database'
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host_database_backupfile="${destination}/${database_backupfile}"
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docker exec --env-file "${env_file:='./nextcloud.env'}" "${database_container}" pg_dump 'nextcloud' -cwv -h 'localhost' -U 'nextcloud' > "${host_database_backupfile}"
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# Files backup
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for file in 'config' 'themes'; do
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printf 'Copying %s\n' "${file}"
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docker cp -a "${base_container}":"/var/www/html/${file}" "${destination}"
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done
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# Turn off maintenance mode
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docker exec "${base_container}" php occ maintenance:mode --off
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# Backup cleanup
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# Only keep 30 days of backups
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printf 'Clean up old database backups'
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find "${destination}" -name '*sqlbkp*' -type f -mtime +30 -print -delete
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printf 'Done'
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