42 lines
974 B
Bash
42 lines
974 B
Bash
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#!/bin/sh
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set -e
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if [ "$#" -lt 4 ] ;then
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echo "Backup postgres database on k8s container with pg_dump and gzip"
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echo
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echo " Usage $0 <path-to-dbname.gz> <pod-app-label> <container-name> [dbname]"
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exit 1
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fi
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BACKUPGZ=$2
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APP=$3
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CONTAINER=$4
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DBNAME=${5-"$(basename "$BACKUPGZ" .sql.gz)"}
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POD=$(kubectl get pod --selector "app=$APP" | tail +2 | awk '{print $1}')
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if [ -z "$POD" ] ; then
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echo not pod found!
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exit 1
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fi
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backup () {
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kubectl exec "$POD" -c "$CONTAINER" -- pg_dump -U postgres --no-owner "$DBNAME" | gzip > "$BACKUPGZ"
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}
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restore () {
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kubectl exec "$POD" -c "$CONTAINER" -- psql postgres postgres -c "DROP DATABASE IF EXISTS $DBNAME"
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kubectl exec "$POD" -c "$CONTAINER" -- psql postgres postgres -c "CREATE DATABASE $DBNAME"
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kubectl exec -i "$POD" -c "$CONTAINER" -- sh -c "gunzip -c | psql $DBNAME postgres" < "$BACKUPGZ"
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}
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case $1 in
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backup)
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backup
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;;
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restore)
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restore
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;;
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esac
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