Add documentation for CLI-based migration scripts.

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Stan Silvert 2017-01-10 16:30:35 -05:00
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== Migration from older versions
To upgrade to a new version of Keycloak first download and install the new version of Keycloak. Once the new version
is installed migrate the database, keycloak-server.json, providers, themes and applications to the new applications.
is installed migrate the config files, database, keycloak-server.json, providers, themes and applications to the new applications.
This chapter contains some general migration details which are applicable to all versions. There are instructions for
migration that is only applicable to a specific release. If you are upgrading from a very old version you need to go
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Migration from a candidate release (CR) to a Final release is not supported. We do however recommend that you test
migration for a CR so we can resolve any potential issues before the Final is released.
=== Migration of config files using migration scripts
As part of your migration, you should use your old versions of config files `standalone.xml`, `standalone-ha.xml`, and/or `domain.xml`.
These files typically contain configuration that is unique to your own environment. So, the first thing to do as part
of a migration is to copy those files to the new Keycloak server installation, replacing the default versions.
If migrating from Keycloak version 2.1.0 or older, you should also copy `keycloak-server.json` to `standalone/configuration`
and/or `domain/configuration`.
There will be configuration in those config files that pertains to Keycloak, which will need to be upgraded. For that,
you should run one of the upgrade scripts. They are `migrate-standalone.cli`, `migrate-standalone-ha.cli`, and `migrate-domain.cli`.
The server should not be running when you execute a migration script.
.Example for running migrate-standalone.cli
[source]
----
$ .../bin/jboss-cli.sh --file=migrate-standalone.cli
----
If you are migrating `keycloak-server.json`, this will also be migrated as needed. If you prefer,
you can migrate `keycloak-server.json` beforehand using the instructions in the next section.
One thing to note is that the migration scripts only work for Keycloak versions 1.8.1 forward. If migrating an older
version you will need to manually upgrade your config files to at least be 1.8.1 compliant.
Lastly, you may want to examine the contents of the scripts before running. They show exactly what will be changed
for each version. They also have values at the top of the script that you may need to change based on your
environment.
=== Migrate and convert keycloak-server.json
You should copy `standalone/configuration/keycloak-server.json` from the old version to make sure any configuration changes you've done are added to the new installation.
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you convert to using standalone.xml, standalone-ha.xml, or domain.xml for configuration. We may soon remove
support for keycloak-server.json.
To convert your keycloak-server.json, you will use a new jboss-cli operation called `migrate-json`.
To convert your keycloak-server.json, you will use a jboss-cli operation called `migrate-json`.
It is recommended that you run this operation while the server is not running.
The `migrate-json` operation assumes you are migrating with an xml configuration file from an old version. For example,