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