1.3 KiB
| title | date | description | tags | |
|---|---|---|---|---|
| Dump and restore a postgresql database on kubernetes | 2020-06-25 | How to dump and restore a postgresql database running on kubernetes |
|
Dumping
Assuming we are working with a postgresql statefulset, our namespace is named miniflux and our master pod is named db-postgresql-0, trying to
dump a database named miniflux:
{{< highlight sh >}}
export POSTGRES_PASSWORD=$(kubectl get secret --namespace miniflux db-postgresql
-o jsonpath="{.data.postgresql-password}" | base64 --decode)
kubectl run db-postgresql-client --rm --tty -i --restart='Never' --namespace miniflux
--image docker.io/bitnami/postgresql:11.8.0-debian-10-r19 --env="PGPASSWORD=$POSTGRES_PASSWORD"
--command -- pg_dump --host db-postgresql -U postgres -d miniflux > miniflux.sql-2020062501
{{< /highlight >}}
Restoring
Assuming we are working with a postgresql statefulset, our namespace is named miniflux and our master pod is named db-postgresql-0, trying to
restore a database named miniflux:
{{< highlight sh >}}
kubectl -n miniflux cp miniflux.sql-2020062501 db-postgresql-0:/tmp/miniflux.sql
kubectl -n miniflux exec -ti db-postgresql-0 -- psql -U postgres -d miniflux
miniflux=# \i /tmp/miniflux.sql
kubectl -n miniflux exec -ti db-postgresql-0 -- rm /tmp/miniflux.sql
{{< /highlight >}}