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Merge pull request #15 from dokku/lg-how-to-upgrade

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Add upgrade/downgrade instructions
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Jose Diaz-Gonzalez
2015-09-15 15:27:46 -07:00
parent 54476e3fd9 71f3d3fee5
commit 1e1827a96e
1 changed files with 20 additions and 0 deletions
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README.md
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@@ -97,3 +97,23 @@ dokku postgres:clone lolipop new_database
# finally, you can destroy the container
dokku postgres:destroy lolipop
```
## upgrade/downgrade
At the moment a database can’t be upgraded (or downgraded) inplace. Instead a clone has to be made, like this:
```shell
# Our original DB using default PG 9.4.4
$ dokku postgres:create db9.4
# Migrate it like this for example
$ POSTGRES_IMAGE_VERSION=9.5 dokku postgres:clone db9.4 db9.5
# If it was linked to an application, first link the new DB
$ dokku postgres:link db9.5 my_app
# Then unlink the old one
$ dokku postgres:unlink db9.4 my_app
# And last, destroy the old container
$ dokku postgres:destroy db9.4
```