mirror of
https://github.com/luzifer-docker/postgres-backup.git
synced 2024-09-18 22:53:03 +00:00
Initial version
This commit is contained in:
commit
a30a2f6a91
17
Dockerfile
Normal file
17
Dockerfile
Normal file
@ -0,0 +1,17 @@
|
|||||||
|
FROM alpine:latest as prefetch
|
||||||
|
|
||||||
|
RUN set -ex \
|
||||||
|
&& apk --no-cache add \
|
||||||
|
curl \
|
||||||
|
&& mkdir -p /src \
|
||||||
|
&& curl -sSfLo /src/dumb-init "https://github.com/Yelp/dumb-init/releases/download/v1.2.2/dumb-init_1.2.2_amd64" \
|
||||||
|
&& chmod 0755 /src/dumb-init
|
||||||
|
|
||||||
|
|
||||||
|
FROM postgres:9.6
|
||||||
|
|
||||||
|
COPY --from=prefetch /src/dumb-init /usr/local/bin/dumb-init
|
||||||
|
COPY pgbackup.sh /usr/local/bin/pgbackup.sh
|
||||||
|
|
||||||
|
ENTRYPOINT ["/usr/local/bin/dumb-init"]
|
||||||
|
CMD ["/bin/bash", "/usr/local/bin/pgbackup.sh"]
|
41
pgbackup.sh
Normal file
41
pgbackup.sh
Normal file
@ -0,0 +1,41 @@
|
|||||||
|
#!/bin/bash
|
||||||
|
set -euo pipefail
|
||||||
|
|
||||||
|
if [[ -z ${PGPASSWORD:-} ]]; then
|
||||||
|
echo 'No $PGPASSWORD was present, aborting.'
|
||||||
|
exit 1
|
||||||
|
fi
|
||||||
|
|
||||||
|
set -x # Do NOT set earlier not to log the password
|
||||||
|
|
||||||
|
# Remove old backups older than N days (default 2d)
|
||||||
|
DELETE_OLDER_THAN=${DELETE_OLDER_THAN:-2}
|
||||||
|
|
||||||
|
# This directory is exposed by the postgres image
|
||||||
|
TARGET_DIR="${TARGET_DIR:-/var/lib/postgresql/data}"
|
||||||
|
|
||||||
|
# Set defaults for PostgreSQL connect
|
||||||
|
PGHOST="${PGHOST:-postgres}"
|
||||||
|
PGUSER="${PGUSER:-postgres}"
|
||||||
|
|
||||||
|
while [ 1 ]; do
|
||||||
|
|
||||||
|
BACKUP_DATE=$(date +%Y-%m-%d_%H-%M-%S)
|
||||||
|
|
||||||
|
pg_dumpall -h "${PGHOST}" -U "${PGUSER}" -g -f "${TARGET_DIR}/${BACKUP_DATE}_globals.sql"
|
||||||
|
gzip "${TARGET_DIR}/${BACKUP_DATE}_globals.sql"
|
||||||
|
|
||||||
|
# Create backup
|
||||||
|
for dbname in $(psql -h "${PGHOST}" -U "${PGUSER}" -q -A -t -c "SELECT datname FROM pg_database" | grep -vE 'template[01]'); do
|
||||||
|
TARGET_FILE="${TARGET_DIR}/${BACKUP_DATE}_${dbname}.sql"
|
||||||
|
pg_dump -h "${PGHOST}" -U "${PGUSER}" -C "${dbname}" >"${TARGET_FILE}"
|
||||||
|
gzip "${TARGET_FILE}"
|
||||||
|
done
|
||||||
|
|
||||||
|
# Cleanup old backups
|
||||||
|
find "${TARGET_DIR}" -mtime "${DELETE_OLDER_THAN}" \( -name '*.sql.gz' -or -name '*.sql' \) -delete
|
||||||
|
|
||||||
|
# Sleep until next full hour
|
||||||
|
sleep $((3600 - $(date +%s) % 3600))
|
||||||
|
|
||||||
|
done
|
Loading…
Reference in New Issue
Block a user