mirror of
https://github.com/luzifer-docker/mariadb-backup.git
synced 2024-11-09 15:20:02 +00:00
52 lines
1.5 KiB
Bash
Executable file
52 lines
1.5 KiB
Bash
Executable file
#!/bin/bash
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set -euo pipefail
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function step() {
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echo "[$(date +%Y-%m-%d %H:%M:%S)] $@"
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}
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[ -z "${MYSQL_PASSWORD:-}" ] && {
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echo 'No $MYSQL_PASSWORD was set, aborting.'
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exit 1
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}
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while [ 1 ]; do
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# Remove old backups older than N days (default 2d)
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DELETE_OLDER_THAN=${DELETE_OLDER_THAN:-2}
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# This directory is exposed by the postgres image
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TARGET_DIR=/var/lib/postgresql/data
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BACKUP_DATE=$(date +%Y-%m-%d_%H-%M-%S)
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# Collect databases
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step "Starting backup..."
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DATABASES=$(mysql \
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-h "${MYSQL_HOST:-mariadb}" -u "${MYSQL_USER:-root}" -p${MYSQL_PASSWORD} \
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-B --disable-column-names -e 'SHOW DATABASES' |
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grep -vE '(information_schema|performance_schema|mysql|tmp)')
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# Create backup
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for db_name in ${DATABASES}; do
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TARGET_FILE="${TARGET_DIR}/${BACKUP_DATE}_${dbname}.sql"
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step "Creating backup of ${db_name} in ${TARGET_FILE}..."
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mysqldump \
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-h "${MYSQL_HOST:-mariadb}" -u "${MYSQL_USER:-root}" -p${MYSQL_PASSWORD} \
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-a --database "${db_name}" | gzip >"${TARGET_FILE}"
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done
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# Dump grants
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GRANTS_FILE="${TARGET_DIR}/${BACKUP_DATE}_grants.sql"
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step "Creating grants backuo in ${GRANTS_FILE}..."
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pt-show-grants -h "${MYSQL_HOST:-mariadb}" -u "${MYSQL_USER:-root}" -p "${MYSQL_PASSWORD}" >"${GRANTS_FILE}"
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# Cleanup old backups
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step "Removing old backups..."
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find "${TARGET_DIR}" -name '*.sql.gz' -mtime "${DELETE_OLDER_THAN}" -delete
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# Sleep until next full hour
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step "I'm done, see ya next hour!"
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sleep $((3600 - $(date +%s) % 3600))
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done
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