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Secure your clusters with SAML
editSecure your clusters with SAML
editThese steps show how you can secure your Elasticsearch clusters and Kibana instances in a deployment by using a Security Assertion Markup Language (SAML) identity provider (IdP) for cross-domain, single sign-on authentication.
The SAML credentials are valid against the deployment, not the ECE platform. You can configure role-based access control for the platform separately.
Before you begin
editElastic Cloud Enterprise supports SAML with Elastic Stack version 6.4 and later.
The steps in this section require an understanding of SAML, specifically the SAML 2.0 Web Browser SSO Profile. To learn more about SAML, see:
- Our blog post on how to enable SAML authentication in Kibana and Elasticsearch.
- Our documentation on configuring Elasticsearch for SAML authentication, especially the details on roles and attribute mappings.
Configure your 7.x cluster to use SAML
editYou must edit your cluster configuration, sometimes also referred to as the deployment plan, to point to the SAML IdP before you can complete the configuration in Kibana.
- Create or use an existing deployment that includes a Kibana instance version 6.4 or later.
- Copy the Kibana endpoint URL.
-
Update your Elasticsearch user settings for the
saml
realm and specify your IdP provider configuration:
xpack: security: authc: realms: saml: <1> saml1: <2> order: 2 attributes.principal: "nameid:persistent" <3> attributes.groups: "groups" <4> idp.metadata.path: "<check with your idp provider>" <5> idp.entity_id: "<check with your idp provider>" <6> sp.entity_id: "KIBANA_ENDPOINT_URL/" <7> sp.acs: "KIBANA_ENDPOINT_URL/api/security/v1/saml" sp.logout: "KIBANA_ENDPOINT_URL/logout"
+
<1> Specifies the authentication realm service.
<2> The SAML realm name. Note that cloud-saml
is reserved for internal use only and you cannot use it. Choose a different name, such as the one shown in the example.
<3> Defines the SAML attribute that is going to be mapped to the principal (username) of the authenticated user in Kibana. In this example, nameid:persistent
maps the NameID
with the urn:oasis:names:tc:SAML:2.0:nameid-format:persistent
format from the Subject of the SAML Assertion. See the attribute mapping documentation
for details and available options.
<4> Defines the SAML attribute used for role mapping when configured in Kibana. Common choices are groups
or roles
. The values for both attributes.principal
and attributes.groups
depend on the IdP provider, so be sure to review their documentation. See the attribute mapping documentation for details and available options.
<5> The file path or the HTTPS URL where your IdP metadata is available, such as https://idpurl.com/sso/saml/metadata
. If you configure a URL you need to make ensure that your Elasticsearch cluster can access it.
<6> The SAML EntityID of your IdP. This can be read from the configuration page of the IdP, or its SAML metadata, such as https://idpurl.com/entity_id
.
<7> Replace KIBANA_ENDPOINT_URL
with the one noted in the previous step, such as sp.entity_id: https://d1a45bf330b74c248d7cc2e0ead8e359.192.168.44.10.ip.es.io:9243/
, including the slash at the end.
-
By default, users authenticating via SAML have no roles assigned to them. For example, if you want all your users authenticating with SAML to get access to Kibana, issue the following request to Elasticsearch:
POST /_xpack/security/role_mapping/SAML1_TO_KIBANAUSER <1> { "enabled": true, "roles": [ "kibana_user" ], <2> "rules": { <3> "field": { "realm.name": "saml1" } }, "metadata": { "version": 1 } }
+ <1> The mapping name <2> The Elastic Stack role to map to <3> A rule specifying the SAML role to map from
-
Alternatively, if you want the users that belong to the group
elasticadmins
in your identity provider to be assigned thesuperuser
role in your Elasticsearch cluster, issue the following request to Elasticsearch:
POST /_xpack/security/role_mapping/SAML1_ELASTICADMIN_TO_SUPERUSER <1> { "enabled": true, "roles": [ "superuser" ], <2> "rules": { "all" : [ <3> { "field": { "realm.name": "saml1" } }, { "field": { "groups": "elasticadmins" } } ]}, "metadata": { "version": 1 } }
+ <1> The mapping name <2> The Elastic Stack role to map to <3> A rule specifying the SAML role to map from
+
NOTE: In order to use the field groups
in the mapping rule, you need to have mapped the SAML Attribute that conveys the group membership to attributes.groups
in the previous step.
-
Update Kibana in the user settings configuration to use SAML as the authentication provider:
xpack.security.authProviders: [saml] server.xsrf.whitelist: [/api/security/v1/saml] xpack.security.public: protocol: https hostname: d1a45bf330b74c248d7cc2e0ead8e159.192.168.44.10.ip.es.io <1> port: 9243
+ <1> The hostname from your Kibana endpoint URL
+
TIP: This configuration disables all other realms and only allows users to authenticate with SAML. If you wish to allow your native realm users to authenticate, you need to also enable the basic
authProvider
by setting xpack.security.authProviders: [saml, basic]
in the configuration of Kibana.
You can then access the Kibana login screen at https://d1a45bf330b74c248d7cc2e0ead8e159.192.168.44.10.ip.es.io:9243/login
-
Optional: If your Identity Provider doesn’t publish its SAML metadata at an http URL, or if your Elasticsearch cluster cannot reach that URL, you can upload the SAML metadata as a file.
-
Prepare a ZIP file with a custom bundle that contains your Identity Provider’s metadata (
metadata.xml
) inside of asaml
folder.This bundle allows all Elasticsearch containers to access the metadata file.
-
Update your Elasticsearch cluster configuration using the advanced configuration editor to use the bundle you prepared in the previous step. You need to modify the
user_bundles
JSON attribute similar to the following example snippet:{ "cluster_name": "REPLACE_WITH_YOUR_CLUSTER_NAME", "plan": { ... "elasticsearch": { "version": "6.4.1", "user_bundles": [ { "name": "saml-metadata", "url": "https://www.MYURL.com/saml-metadata.zip", "elasticsearch_version": "6.4.1" } ] } }
The URLs that point to the ZIP file containing the bundle must be accessible to the deployment. Custom bundles are unzipped under the path
/app/config/BUNDLE_DIRECTORY_STRUCTURE
, whereBUNDLE_DIRECTORY_STRUCTURE
is the directory structure in the ZIP file. Make sure to save the file location where custom bundles get unzipped, as you will need it in the next step.In our example, the SAML metadata file will be located in the path
/app/config/saml/metadata.xml
:$ tree . . └── saml └── metadata.xml
-
Adjust your
saml
realm configuration accordingly:
-
Configure your 6.x cluster to use SAML
editFor 6.x deployments the configuration is slightly different. For step 3, you must specify the realm name, then define the realm type
using the following example:
xpack: security: authc: realms: cloud-saml: type: saml order: 2
All of the other steps are the same.