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Added clarification for the case with extensions #64

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Added clarification for the case with extensions #64

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e815d46
Added clarification for the case with plugins
Dzeri96 Sep 12, 2022
1121f20
Changed wording from plugin to extension
Dzeri96 Sep 13, 2022
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5 changes: 5 additions & 0 deletions README.md
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Expand Up @@ -109,3 +109,8 @@ $ docker logs --tail 100 postgres-upgrade-testing
$ # can now safely remove "$OLD"
$ sudo rm -rf "$OLD"
```
## Upgrading with extensions:
If your current postgres installation has extensions installed, for example [TimescaleDB](https://www.timescale.com/), you'll have to create a custom container that has the needed extensions installed in both the old and new version of Postgres.
Additionally, supplying an option to pre-load any required libraries in the upgrade process is needed (`"-c shared_preload_libraries=YOUR_PLUGIN"`).

For a simple example with TimescaleDB, refer to [this comment](https://github.com/timescale/timescaledb/issues/2260#issuecomment-686786971).