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During password authentication, the client has to hash the (hashed) password with a random salt provided by the server.This prevents a thief from using a stolen password on other systems. The actual database password is a hash of the clear text password entered by the user.PostgreSQL uses cryptographic hashing for two purposes: This article describes how you can adapt your application safely. Since v10, PostgreSQL has provided support for scram-sha-256 for password hashing and authentication. Hopefully, this will help you move easily between different projects with different system dependencies.Authentication authentication method 10 not supported md5 password password_encryption postgresql scram-sha-256 security The authentication type 10 is not supported uthentication method not supported (Received: 10) If Step 2 applies to you, you’ll need to start the brew service again by running brew services start postgres. First, it unlinks the old version, and then it links the new one. Under the hood, this actually performs two separate brew commands. All you have to do is run brew switch postgres. Now that we have the correct version installed and we have stopped any previous versions from running, we can switch to the correct version. You can run brew services stop postgres to do so. If you are switching a keg that runs as a Homebrew service, you should stop it before switching to a new version. From there, you can run brew install homebrew/versions/keg-version.įor example, to install Postgres 9.5.5, you would run brew install homebrew/versions/postgresql95. This will add each version of each keg to the output when you run brew search postgres. If you haven’t tapped brew versions, you can do so by running brew tap homebrew/versions. If you don’t see the version you need, it is possible to install it.

If you run brew info postgres, the output will include a list of library versions. Here’s how you can use it to switch between Postgres versions. However, until I found out about the switch command, I didn’t have a straightforward way to switch between versions of a particular keg. Homebrew is an extraordinarily helpful tool to install and maintain system libraries.