2020-06-26 00:06:30 +02:00
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---
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title: "Dump and restore a postgresql database on kubernetes"
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date: 2020-06-25
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2021-03-11 23:15:31 +01:00
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description: How to dump and restore a postgresql database running on kubernetes
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tags:
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- kubernetes
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2020-06-26 00:06:30 +02:00
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---
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## Dumping
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Assuming we are working with a postgresql statefulset, our namespace is named `miniflux` and our master pod is named `db-postgresql-0`, trying to
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dump a database named `miniflux`:
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{{< highlight sh >}}
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2021-03-23 22:38:09 +01:00
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export POSTGRES_PASSWORD=$(kubectl get secret --namespace miniflux db-postgresql \
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-o jsonpath="{.data.postgresql-password}" | base64 --decode)
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kubectl run db-postgresql-client --rm --tty -i --restart='Never' --namespace miniflux \
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--image docker.io/bitnami/postgresql:11.8.0-debian-10-r19 --env="PGPASSWORD=$POSTGRES_PASSWORD" \
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--command -- pg_dump --host db-postgresql -U postgres -d miniflux > miniflux.sql-2020062501
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2020-06-26 00:06:30 +02:00
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{{< /highlight >}}
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## Restoring
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Assuming we are working with a postgresql statefulset, our namespace is named `miniflux` and our master pod is named `db-postgresql-0`, trying to
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restore a database named `miniflux`:
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{{< highlight sh >}}
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kubectl -n miniflux cp miniflux.sql-2020062501 db-postgresql-0:/tmp/miniflux.sql
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kubectl -n miniflux exec -ti db-postgresql-0 -- psql -U postgres -d miniflux
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miniflux=# \i /tmp/miniflux.sql
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kubectl -n miniflux exec -ti db-postgresql-0 -- rm /tmp/miniflux.sql
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{{< /highlight >}}
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