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Merge pull request #2000 from jetstack-bot/cherry-pick-1999-to-release-0.9

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[release-0.9] Adds documentation to describe how to perform 0.8->0.9 process
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jetstack-bot
2019-08-16 19:07:00 +01:00
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docs/tasks/upgrading/upgrading-0.8-0.9.rst
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Upgrading from v0.8 to v0.9
===========================
There are no special notes or considerations when upgrading from v0.8 to v0.9.
Due to a change in the API group that cert-manager deployments use
(`apps/v1beta1` to `apps/v1`), cert-manager deployments must first be deleted
before applying the new version. This will cause downtime until the new version
has been applied. No data loss will occur during this operation however it is
always advised to backup your data during an upgrade, which you can follow
:doc:`here <../backup-restore-crds>`. To perform this action run:
.. code-block:: shell
kubectl delete deployments --namespace cert-manager \
cert-manager \
cert-manager-cainjector \
cert-manager-webhook
After this operation, follow the standard upgrade process as defined in the
:doc:`upgrade guide <./index>`.