mirror of
https://github.com/prodrigestivill/docker-postgres-backup-local.git
synced 2026-05-31 08:37:58 +00:00
Pau Rodriguez-Estivill
69 lines
2.2 KiB
Bash
Executable File
69 lines
2.2 KiB
Bash
Executable File
#! /bin/sh
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set -e
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if [ "${POSTGRES_DB}" = "**None**" ]; then
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echo "You need to set the POSTGRES_DB environment variable."
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exit 1
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fi
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if [ "${POSTGRES_HOST}" = "**None**" ]; then
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if [ -n "${POSTGRES_PORT_5432_TCP_ADDR}" ]; then
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POSTGRES_HOST=$POSTGRES_PORT_5432_TCP_ADDR
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POSTGRES_PORT=$POSTGRES_PORT_5432_TCP_PORT
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else
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echo "You need to set the POSTGRES_HOST environment variable."
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exit 1
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fi
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fi
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if [ "${POSTGRES_USER}" = "**None**" ]; then
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echo "You need to set the POSTGRES_USER environment variable."
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exit 1
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fi
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if [ "${POSTGRES_PASSWORD}" = "**None**" -a "${POSTGRES_PASSWORD_FILE}" = "**None**" ]; then
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echo "You need to set the POSTGRES_PASSWORD environment variable or link to a container named POSTGRES."
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exit 1
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fi
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#Proces vars
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if [ "${POSTGRES_PASSWORD_FILE}" = "**None**" ]; then
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export PGPASSWORD=$POSTGRES_PASSWORD
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else if [ -r "${POSTGRES_PASSWORD_FILE}" ]; then
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export PGPASSWORD=$(cat ${POSTGRES_PASSWORD_FILE})
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else
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echo "Missing POSTGRES_PASSWORD_FILE file."
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exit 1
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fi
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POSTGRES_HOST_OPTS="-h $POSTGRES_HOST -p $POSTGRES_PORT -U $POSTGRES_USER $POSTGRES_EXTRA_OPTS"
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KEEP_DAYS=$BACKUP_KEEP_DAYS
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KEEP_WEEKS=`expr $((($BACKUP_KEEP_WEEKS * 7) + 1))`
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KEEP_MONTHS=`expr $((($BACKUP_KEEP_MONTHS * 31) + 1))`
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#Initialize dirs
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mkdir -p "$BACKUP_DIR/daily/" "$BACKUP_DIR/weekly/" "$BACKUP_DIR/monthly/"
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#Loop all databases
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for DB in $(echo $POSTGRES_DB | tr , " "); do
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#Initialize filename vers
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DFILE="$BACKUP_DIR/daily/$DB-`date +%Y%m%d-%H%M%S`.sql.gz"
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WFILE="$BACKUP_DIR/weekly/$DB-`date +%G%V`.sql.gz"
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MFILE="$BACKUP_DIR/monthly/$DB-`date +%Y%m`.sql.gz"
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#Create dump
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echo "Creating dump of ${DB} database from ${POSTGRES_HOST}..."
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pg_dump -f "$DFILE" $POSTGRES_HOST_OPTS $DB
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#Copy (hardlink) for each entry
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ln -vf "$DFILE" "$WFILE"
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ln -vf "$DFILE" "$MFILE"
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done
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#Clean old files
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find "$BACKUP_DIR/daily" -maxdepth 1 -mtime +$KEEP_DAYS -name "$POSTGRES_DB-*.sql*" -exec rm -rf '{}' ';'
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find "$BACKUP_DIR/weekly" -maxdepth 1 -mtime +$KEEP_WEEKS -name "$POSTGRES_DB-*.sql*" -exec rm -rf '{}' ';'
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find "$BACKUP_DIR/monthly" -maxdepth 1 -mtime +$KEEP_MONTHS -name "$POSTGRES_DB-*.sql*" -exec rm -rf '{}' ';'
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echo "SQL backup uploaded successfully"
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