Known issues and limitations#

These known issues and limitations are in the current release of EDB Postgres Distributed for Kubernetes.

Postgres major version upgrades#

This version of EDB Postgres Distributed for Kubernetes doesn’t support major version upgrades of Postgres.

Data migration#

This version of EDB Postgres Distributed for Kubernetes doesn’t support migrating from existing Postgres databases.

Connectivity with PgBouncer#

EDB Postgres Distributed for Kubernetes does not support using: PgBouncer to pool client connection requests. This limitation

applies to both the open-source and EDB versions of PgBouncer.

Backup operations#

To configure an EDB Postgres Distributed for Kubernetes environment, you must apply a PGDGroup YAML object to each Kubernetes cluster. Applying this object creates all necessary services for implementing a distributed architecture.

If you added a spec.backup section to this PGDGroup object with the goal of setting up a backup configuration, the backup will fail unless you also set the spec.backup.cron.schedule value.

Error output example:

The PGDGroup "region-a" is invalid: spec.backup.cron.schedule: Invalid value: "": Empty spec string

Workaround#

To work around this issue, add a spec.backup.cron.schedule section with a schedule that meets your requirements, for example:

spec:
  instances: 3
  proxyInstances: 2
  pgd:
    parentGroup:
      create: true
      name: world
  backup:
    configuration:
      barmanObjectStore:
        ...
    cron:
      suspend: false
      immediate: true
      schedule: "0 */5 * * * *"