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keycloak-scim/docs/documentation/upgrading/topics/changes/changes-26_0_0.adoc
mposolda f1ec0a9bb6 Release notes and upgrading guide for the client libraries 
closes #30815

Signed-off-by: mposolda <mposolda@gmail.com>

Co-authored-by: andymunro <48995441+andymunro@users.noreply.github.com>
Signed-off-by: Marek Posolda <mposolda@gmail.com>
2024-09-18 14:52:11 +02:00

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= Infinispan marshalling changes
Marshalling is the process of converting Java objects into bytes to send them across the network between {project_name} servers.
With {project_name} 26, the marshalling library has changed from JBoss Marshalling to Infinispan Protostream.
The libraries are not compatible between each other and, it requires some steps to ensure the session data is not lost.
WARNING: JBoss Marshalling and Infinispan Protostream are not compatible with each other and incorrect usage may lead to data loss.
Consequently, all caches are cleared when upgrading to this version.
To prevent losing user sessions upgrade to Keycloak 25 first and enable the persistent sessions feature as outlined in the migration guide for {project_name} 25.
= Operator no longer defaults to proxy=passthrough
The Operator will no longer default to the hostname v1 setting of proxy=passthrough. This allows deployments using hostname v2 for a fixed edge hostname to work as desired without additional options.
= New method in `ClusterProvider` API
The following method was added to `org.keycloak.cluster.ClusterProvider`:
* `void notify(String taskKey, Collection<? extends ClusterEvent> events, boolean ignoreSender, DCNotify dcNotify)`
When multiple events are sent to the same `taskKey`, this method batches events and just perform a single network call.
This is an optimization to reduce traffic and network related resources.
In {project_name} 26, the new method has a default implementation to keep backward compatibility with custom implementation.
The default implementation performs a single network call per an event, and it will be removed in a future version of {project_name}.
= Group-related events no longer fired when removing a realm
With the goal of improving the scalability of groups, they are now removed directly from the database when removing a realm.
As a consequence, group-related events like the `GroupRemovedEvent` are no longer fired when removing a realm.
If you have extensions handling any group-related event when a realm is removed, make sure to use the `RealmRemovedEvent` instead
to perform any cleanup or custom processing when a realm, and their groups, are removed.
The `GroupProvider` interface is also updated with a new `preRemove(RealmModel)` method to force implementations to properly
handle the removal of groups when a realm is removed.
= Operator scheduling defaults
Keycloak Pods will now have default affinities to prevent multiple instances from the same CR from being deployed on the same node, and all Pods from the same CR will prefer to be in the same zone to prevent stretch cache clusters.
= Operator's default CPU and memory limits/requests
In order to follow the best practices, the default CPU and memory limits/requests for the Operator were introduced. It affects both non-OLM and OLM installs. To override the default values for the OLM install, edit the `resources` section in the operator's https://github.com/operator-framework/operator-lifecycle-manager/blob/master/doc/design/subscription-config.md#resources[subscription].
= Deprecations in `keycloak-common` module
The following items have been deprecated for removal in upcoming {project_name} versions with no replacement:
- `org.keycloak.common.util.reflections.Reflections.newInstance(java.lang.Class<T>)`
- `org.keycloak.common.util.reflections.Reflections.newInstance(java.lang.Class<?>, java.lang.String)`
- `org.keycloak.common.util.reflections.SetAccessiblePrivilegedAction`
- `org.keycloak.common.util.reflections.UnSetAccessiblePrivilegedAction`
= Consistent usage of UTF-8 charset for URL encoding
`org.keycloak.common.util.Encode` now always uses the `UTF-8` charset for URL encoding instead relying implicitly on the `file.encoding` system property.
= Configuring the LDAP Connection Pool
In this release, the LDAP connection pool configuration relies solely on system properties. The main
reason is that the LDAP connection pool configuration is a JVM-level configuration rather than specific to an individual
realm or LDAP provider instance.
Compared to previous releases, any realm configuration related to the LDAP connection pool will be ignored.
If you are migrating from previous versions where any of the following settings are set to your LDAP provider(s), consider using system properties instead:
* `connectionPoolingAuthentication`
* `connectionPoolingInitSize`
* `connectionPoolingMaxSize`
* `connectionPoolingPrefSize`
* `connectionPoolingTimeout`
* `connectionPoolingProtocol`
* `connectionPoolingDebug`
For more details, see link:{adminguide_link}#_ldap_connection_pool[Configuring the connection pool].
= Custom Footer in Login Theme
This release introduced the capability to easily add a custom footer to the login pages for the `base/login` and `keycloak.v2/login` theme.
In order to use a custom footer, create a `footer.ftl` file in your custom login theme with the desired content.
For more details, see link:{developerguide_link}#_theme_custom_footer[Adding a custom footer to a login theme].
= Persisting revoked access tokens across restarts
In this release, revoked access tokens are written to the database and reloaded when the cluster is restarted by default when using the embedded caches.
To disable this behavior, use the SPI option `spi-single-use-object-infinispan-persist-revoked-tokens` as outlined in the https://www.keycloak.org/server/all-provider-config[All provider configuration] {section}.
The SPI behavior of `SingleUseObjectProvider` has changed that for revoked tokens only the methods `put` and `contains` must be used.
This is enforced by default, and can be disabled using the SPI option `spi-single-use-object-infinispan-persist-revoked-tokens`.
= Highly available multi-site deployments
{project_name} 26 introduces significant improvements to the recommended HA multi-site architecture, most notably:
- {project_name} deployments on each site are now able to handle user requests simultaneously, therefore active/active
setups are now supported, while previous configurations which leveraged active/passive loadbalancer will continue to work.
- The loadbalancer blueprint has been updated to use the AWS Global Accelerator as this avoids prolonged fail-over times
caused by DNS caching by clients.
- Persistent user sessions are now a requirement of the architecture. Consequently, user sessions will be kept
on {project_name} or {jdgserver_name} upgrades.
- External {jdgserver_name} request handling has been improved to reduce memory usage and request latency.
As a consequence of the above changes, the following changes are required to your existing {project_name} deployments.
. `distributed-cache` definitions provided by a cache configuration file are ignored when the `multi-site` feature is enabled,
so you must configure the connection to the external {jdgserver_name} deployment via the `cache-remote-*` command line arguments
or Keycloak CR as outlined in the blueprints. All `remote-store` configurations must be removed from the cache configuration file.
. Review your current cache configurations in the external {jdgserver_name} and update them with those outlined in the latest version of the {project_name}'s documentation.
While previous versions of the cache configurations only logged warnings when the backup replication between sites failed, the new configurations ensure that the state in both sites stays in sync: When the transfer between the two sites fails, the caller will see an error.
Due to that, you need to set up monitoring to disconnect the two sites in case of a site failure.
The Keycloak High Availability Guide contains a blueprint on how to set this up.
. While previous LoadBalancer configurations will continue to work with {project_name}, consider upgrading
an existing Route53 configurations to avoid prolonged failover times due to client side DNS caching.
. If you have updated your cache configuration XML file with remote-store configurations, those will no longer work.
Instead, enable the `multi-site` feature and use the `cache-remove-*` options.
= External {jdgserver_name} in a single-site setup
If you are using an external {jdgserver_name} in a single-site setup, this was not supported in earlier versions of {project_name} and it is not supported in {project_name} 26.
To protect users from using it accidentally via a manual configuration in Keycloak's cache XML or via the CLI options, this is now guarded with a feature flag `cache-embedded-remote-store`. It is marked as experimental and is therefore not supported. {project_name} 26 will not start with such a configuration and show an error instead unless this experimental feature is enabled.
If you have been using an external {jdgserver_name} to keep users logged in between restarts and upgrades, use the `persistent-user-sessions` feature instead which is enabled by default. The external {jdgserver_name} is then no longer necessary.
The experimental feature `cache-embedded-remote-store` *will be removed in a future minor release*.
= Admin Bootstrapping and Recovery
It used to be difficult to regain access to a {project_name} instance when all admin users were locked out. The process required multiple advanced steps, including direct database access and manual changes. In an effort to improve the user experience, {project_name} now provides multiple ways to bootstrap a new admin account, which can be used to recover from such situations.
Consequently, the environment variables `KEYCLOAK_ADMIN` and `KEYCLOAK_ADMIN_PASSWORD` have been deprecated. You should use `KC_BOOTSTRAP_ADMIN_USERNAME` and `KC_BOOTSTRAP_ADMIN_PASSWORD` instead. These are also general options, so they may be specified via the cli or other config sources, for example `--bootstrap-admin-username=admin`. For more information, see the new https://www.keycloak.org/server/bootstrap-admin-recovery[Bootstrap admin and recovery] guide.
= Application Initiated Required Action redirect now contains kc_action Parameter
The required action provider name is now returned via the `kc_action` parameter when redirecting back from an application initiated required action execution.
This eases the detection of which required action was executed for a client. The outcome of the execution can be determined via the `kc_action_status` parameter.
Note: This feature required changes to the Keycloak JS adapter, therefore it is recommended to upgrade to the latest version of the adapter if you want to make use of this feature.
= Deprecations in `keycloak-services` module
The class `UserSessionCrossDCManager` is deprecated and planned to be removed in a future version of {project_name}.
Read the `UserSessionCrossDCManager` Javadoc for the alternative methods to use.
= Identity Providers no longer available from the realm representation
As part of the improvements around the scalability of realms and organizations when they have many identity providers, the realm representation
no longer holds the list of identity providers. However, they are still available from the realm representation
when exporting a realm.
To obtain the query the identity providers in a realm, prefer using the `/realms/{realm}/identity-provider/instances` endpoint.
This endpoint supports filters and pagination.
= CLI import placeholder replacement
The CLI command `kc.[sh|bat] import` now has placeholder replacement enabled. Previously placeholder replacement was only enabled for realm import at startup.
If you wish to disable placeholder replacement for the `import` command, add the system property `-Dkeycloak.migration.replace-placeholders=false`
= New Java API to search realms by name
The `RealmProvider` Java API now contains a new method `Stream<RealmModel> getRealmsStream(String search)` which allows searching for a realm by name.
While there is a default implementation which filters the stream after loading it from the provider, implementations are encouraged to provide this with more efficient implementation.
= Keystore and trust store default format change
{project_name} now determines the format of the keystore and trust store based on the file extension. If the file extension is `.p12`, `.pkcs12` or `.pfx`, the format is PKCS12. If the file extension is `.jks`, `.keystore` or `.truststore`, the format is JKS. If the file extension is `.pem`, `.crt` or `.key`, the format is PEM.
You can still override automatic detection by specifying the `https-key-store-type` and `https-trust-store-type` explicitly. The same applies to the management interface and its `https-management-key-store-type`. Restrictions for the FIPS strict mode stay unchanged.
NOTE: The `+spi-truststore-file-*+` options and the truststore related options `+https-trust-store-*+` are deprecated, we strongly recommend to use System Truststore. For more details refer to the relevant https://www.keycloak.org/server/keycloak-truststore[guide].
= Improving performance for selection of identity providers
New indexes were added to the `IDENTITY_PROVIDER` table to improve the performance of queries that fetch the IDPs associated with an organization, and fetch IDPs that are available for login (those that are `enabled`, not `link_only`, not marked as `hide_on_login`).
If the table currently contains more than 300.000 entries,
{project_name} will skip the creation of the indexes by default during the automatic schema migration, and will instead log the SQL statements
on the console during migration. In this case, the statements must be run manually in the DB after {project_name}'s startup.
Also, the `kc.org` and `hideOnLoginPage` configuration attributes were migrated to the identity provider itself, to allow for more efficient queries when searching for providers. As such, API clients should use the `getOrganizationId/setOrganizationId` and `isHideOnLogin/setHideOnLogin` methods in the `IdentityProviderRepresentation`, and avoid setting these properties using the legacy config attributes that are now deprecated.
= Removal of GELF logging handler
GELF support has been deprecated for a while now, and with this release it has been finally removed from {project_name}.
Other log handlers are available and fully supported to be used as a replacement of GELF, for example Syslog. For details
see the https://www.keycloak.org/server/logging[Logging guide].
= Paths for `common` theme resources have changed
Some of the paths for the `common` resources of the `keycloak` theme have changed, specifically the resources for third-party libraries. Make sure to update your custom themes accordingly:
- `node_modules/patternfly/dist` is now `vendor/patternfly-v3`
- `node_modules/@patternfly/patternfly` is now `vendor/patternfly-v4`
- `node_modules/@patternfly-v5/patternfly` is now `vendor/patternfly-v5`
- `node_modules/rfc4648/lib` is now `vendor/rfc4648`
Additionally, the following resources have been removed from the `common` theme:
- `node_modules/alpinejs`
- `node_modules/jquery`
If you previously used any of the removed resources in your theme, make sure to add them to your own theme resources instead.
= Additional datasources now require using XA
{project_name} by default does not use XA datasources. However, this is considered unsafe if more than one datasource is used.
Starting with this release, you need to use XA datasources if you are adding additional datasources to {project_name}.
If the default datasource supports XA, you can do this by setting the `--transaction-xa-enabled=true` option. For additional datasources, you need to use
the `quarkus.datasource.<your-datasource-name>.jdbc.transactions=xa` option in your `quarkus.properties` file.
At most one datasource can be non-XA.
Recovery isn't supported when you don't have persistent storage for the transaction store.
= Hostname v1 feature removed
The deprecated hostname v1 feature was removed. This feature was deprecated in {project_name} 25 and replaced by hostname v2. If you are still using this feature, you must migrate to hostname v2. For more details, see the https://www.keycloak.org/server/hostname[Configuring the hostname (v2)] and https://www.keycloak.org/docs/latest/upgrading/#new-hostname-options[the initial migration guide].
= Proxy option removed
The deprecated `proxy` option was removed. This option was deprecated in {project_name} 24 and replaced by the `proxy-headers` option in combination with hostname options as needed. For more details, see https://www.keycloak.org/server/reverseproxy[using a reverse proxy] and https://www.keycloak.org/docs/latest/upgrading/index.html#deprecated-proxy-option[the initial upgrading guide].
= All user sessions are persisted by default
Since the database is now the source of truth for user sessions, it is possible to restrict the size of the session caches to reduce memory usage.
If you use the default `conf/cache-ispn.xml` file the caches for storing user and client sessions are by default configured to store only 10000 sessions and one owner for each entry.
Update your custom embedded Infinispan cache configuration file with configuration similar to one shown below for caches `sessions`, `clientSessions`, `offlineSessions`, and `offlineClientSessions`:
[,xml]
----
<distributed-cache name="sessions" owners="1">
<!-- other configuration -->
<memory max-count="10000"/>
</distributed-cache>
----
For more details proceed to the https://www.keycloak.org/server/caching[Configuring distributed caches] guide.
= Grace period for idle sessions removed when persistent sessions are enabled
Previous versions of {project_name} added a grace period of two minutes to idle times of user and client sessions.
This was added due to a previous architecture where session refresh times were replicated asynchronously in a cluster.
With persistent user sessions, this is no longer necessary, and therefore the grace period is now removed.
To keep the old behavior, update your realm configuration and extend the session and client idle times by two minutes.
= Support for legacy `redirect_uri` parameter and SPI options has been removed
Previous versions of {project_name} had supported automatic logout of the user and redirecting to the application by opening logout endpoint URL such as
`http(s)://example-host/auth/realms/my-realm-name/protocol/openid-connect/logout?redirect_uri=encodedRedirectUri`. This functionality was deprecated in {project_name} 18 and has been removed in this version in favor of following the OpenID Connect specification.
As part of this change the following related configuration options for the SPI have been removed:
- `--spi-login-protocol-openid-connect-legacy-logout-redirect-uri`
- `--spi-login-protocol-openid-connect-suppress-logout-confirmation-screen`
If you were still making use these options or the `redirect_uri` parameter for logout you should implement the link:https://openid.net/specs/openid-connect-rpinitiated-1_0.html[OpenID Connect RP-Initiated Logout specification] instead.
= Additional validations on the `--optimized` startup option
The `--optimized` startup option now requires the optimized server image to be built first. This can be achieved
either by running `kc.sh|bat build` first or by any other server commands (like `start`, `export`, `import`)
without the `--optimized` flag.
= Adapter and misc BOM files are removed
The `org.keycloak.bom:keycloak-adapter-bom` and `org.keycloak.bom:keycloak-misc-bom` BOM files are removed. The adapter BOM was no longer useful because most of the Java adapters
are removed. The misc BOM had contained only one artifact, `keycloak-test-helper`, and that artifact is also removed in this release.
= keycloak-test-helper is removed
The maven artifact `org.keycloak:keycloak-test-helper` is removed in this release. The artifact provided a few helper methods for dealing with a Java admin client. If you use the
helper methods, it is possible to fork them into your application if needed.
= JEE admin-client is removed
The JEE admin-client is removed in this release. We still keep supporting Jakarta admin-client.
= New generalized event types for credentials
There are now generalized events for updating (`UPDATE_CREDENTIAL`) and removing (`REMOVE_CREDENTIAL`) a credential. The credential type is described in the `credential_type` attribute of the events.
The new event types are supported by the Email Event Listener.
The following event types are now deprecated and will be removed in a future version: `UPDATE_PASSWORD`, `UPDATE_PASSWORD_ERROR`, `UPDATE_TOTP`, `UPDATE_TOTP_ERROR`, `REMOVE_TOTP`, `REMOVE_TOTP_ERROR`
= `setOrCreateChild()` method removed from JavaScript Admin Client
The `groups.setOrCreateChild()` method has been removed from that JavaScript-based Admin Client. If you are still using this method then use the `createChildGroup()` or `updateChildGroup()` methods instead.
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