mirror of
https://github.com/luzifer-docker/postgres-backup.git
synced 2024-09-16 13:48:32 +00:00
42 lines
1.2 KiB
Bash
42 lines
1.2 KiB
Bash
#!/bin/bash
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set -euo pipefail
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if [[ -z ${PGPASSWORD:-} ]]; then
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echo 'No $PGPASSWORD was present, aborting.'
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exit 1
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fi
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set -x # Do NOT set earlier not to log the password
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# Remove old backups older than N days (default 2d)
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DELETE_OLDER_THAN=${DELETE_OLDER_THAN:-2}
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# This directory is exposed by the postgres image
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TARGET_DIR="${TARGET_DIR:-/var/lib/postgresql/data}"
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# Set defaults for PostgreSQL connect
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PGHOST="${PGHOST:-postgres}"
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PGUSER="${PGUSER:-postgres}"
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while [ 1 ]; do
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BACKUP_DATE=$(date +%Y-%m-%d_%H-%M-%S)
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pg_dumpall -h "${PGHOST}" -U "${PGUSER}" -g -f "${TARGET_DIR}/${BACKUP_DATE}_globals.sql"
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gzip "${TARGET_DIR}/${BACKUP_DATE}_globals.sql"
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# Create backup
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for dbname in $(psql -h "${PGHOST}" -U "${PGUSER}" -q -A -t -c "SELECT datname FROM pg_database" | grep -vE 'template[01]'); do
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TARGET_FILE="${TARGET_DIR}/${BACKUP_DATE}_${dbname}.sql"
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pg_dump -h "${PGHOST}" -U "${PGUSER}" -C "${dbname}" >"${TARGET_FILE}"
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gzip "${TARGET_FILE}"
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done
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# Cleanup old backups
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find "${TARGET_DIR}" -mtime "${DELETE_OLDER_THAN}" \( -name '*.sql.gz' -or -name '*.sql' \) -delete
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# Sleep until next full hour
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sleep $((3600 - $(date +%s) % 3600))
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done
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