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п»їBasic Authentication Plugin.
Solr can support Basic authentication for users with the use of the BasicAuthPlugin.
An authorization plugin is also available to configure Solr with permissions to perform various activities in the system. The authorization plugin is described in the section Rule-Based Authorization Plugin.
Enable Basic Authentication.
To use Basic authentication, you must first create a security.json file. This file and where to put it is described in detail in the section Enable Plugins with security.json.
For Basic authentication, the security.json file must have an authentication part which defines the class being used for authentication. Usernames and passwords (as a sha256(password+salt) hash) could be added when the file is created, or can be added later with the Basic authentication API, described below.
If running in cloud mode, you can use the bin/solr auth command-line utility to enable security for a new installation, see: bin/solr auth --help for more details.
The authorization part is not related to Basic authentication, but is a separate authorization plugin designed to support fine-grained user access control. For more information, see the section Rule-Based Authorization Plugin.
An example security.json showing both sections is shown below to show how these plugins can work together:
"authentication" : "blockUnknown" : true , "class" : "solr.BasicAuthPlugin" , "credentials" : "solr" : "IV0EHq1OnNrj6gvRCwvFwTrZ1+z1oBbnQdiVC3otuq0= Ndd7LKvVBAaZIF0QAVi1ekCfAJXr1GGfLtRUXhgrF8c background-color: #f8f8f8">>, "realm" : "My Solr users" , "forwardCredentials" : false >, "authorization" : "class" : "solr.RuleBasedAuthorizationPlugin" , "permissions" :[ "name" : "security-edit" , "role" : "admin" >], "user-role" : "solr" : "admin" > >>
There are several things defined in this file:
1 Basic authentication and rule-based authorization plugins are enabled. 2 The parameter "blockUnknown":true means that unauthenticated requests are not allowed to pass through. 3 A user called 'solr', with a password 'SolrRocks' has been defined. 4 We override the realm property to display another text on the login prompt. 5 The parameter "forwardCredentials":false means we let Solr’s PKI authenticaion handle distributed request instead of forwarding the Basic Auth header. 6 The 'admin' role has been defined, and it has permission to edit security settings. 7 The 'solr' user has been defined to the 'admin' role.
Save your settings to a file called security.json locally. If you are using Solr in standalone mode, you should put this file in $SOLR_HOME .
If blockUnknown does not appear in the security.json file, it will default to false . This has the effect of not requiring authentication at all. In some cases, you may want this; for example, if you want to have security.json in place but aren’t ready to enable authentication. However, you will want to ensure that this parameter is set to true in order for authentication to be truly enabled in your system.
If you set blockUnknown to false , then any request that is not explicitly protected by a permission will be accessible to anonymous users! Consequently, you should define a role binding for every predefined permission you want to protect. You can assign the special role: null binding for requests that you want to allow anonymous users to access. To protect all endpoints except those with role:null , you can add a role binding for the all permission and place it in the last position in security.json .
If realm is not defined, it will default to solr .
If you are using SolrCloud, you must upload security.json to ZooKeeper. An example command and more information about securing your setup can be found at Authentication and Authorization Plugins In SolrCloud Mode.
Caveats.
There are a few things to keep in mind when using the Basic authentication plugin.
Credentials are sent in plain text by default. It’s recommended to use SSL for communication when Basic authentication is enabled, as described in the section Enabling SSL. A user who has access to write permissions to security.json will be able to modify all the permissions and how users have been assigned permissions. Special care should be taken to only grant access to editing security to appropriate users. Your network should, of course, be secure. Even with Basic authentication enabled, you should not unnecessarily expose Solr to the outside world.
Combining Basic Authentication with Other Schemes.
When using other authentication schemes, such as the JWT Authentication Plugin, you may still want to use Basic authentication for a small set of "service account" oriented client applications. Solr provides the MultiAuthPlugin to support multiple authentication schemes. For example, you may want to integrate Solr with an OIDC provider for user accounts, but also use Basic for authenticating requests coming from the Prometheus metrics exporter. The MultiAuthPlugin uses the scheme of the Authorization header to determine which plugin should handle each request. The MultiAuthPlugin is useful when running Solr on Kubernetes as you can delegate user management and authentication to an OIDC provider for end-users, but also secure the liveness and readiness endpoints using Basic authentication, as you would not want Kubernetes to use OIDC when testing the probe endpoints.
The following example illustrates how to configure the MultiAuthPlugin to support the Basic and Bearer schemes.
"authentication" : "class" : "solr.MultiAuthPlugin" , "schemes" : [ "scheme" : "bearer" , "blockUnknown" : true , "class" : "solr.JWTAuthPlugin" , "wellKnownUrl" : "https://OIDC_PROVIDER_URL/.well-known/openid-configuration" , "clientId" : "solr" , "redirectUris" : "http://localhost:8983/solr/" , "rolesClaim" : "groups" >, "scheme" : "basic" , "blockUnknown" : true , "class" : "solr.BasicAuthPlugin" , "credentials" : "k8s-oper" : "PASSWORD SALT & HASH" >, "forwardCredentials" : false >] > >
For un-authenticated AJAX requests from the Solr Admin UI (i.e. requests without an Authorization header), the MultiAuthPlugin forwards the request to the first plugin listed in the schemes list. In the example above, users will need to authenticate to the OIDC provider to login to the Admin UI.
Editing Basic Authentication Plugin Configuration.
An Authentication API allows modifying user IDs and passwords. The API provides an endpoint with specific commands to set user details or delete a user.
API Entry Point.
v1: http://localhost:8983/solr/admin/authentication v2: http://localhost:8983/api/cluster/secur ... entication.
This endpoint is not collection-specific, so users are created for the entire Solr cluster. If users need to be restricted to a specific collection, that can be done with the authorization rules.
Add a User or Edit a Password.
The set-user command allows you to add users and change their passwords. For example, the following defines two users and their passwords:
V1 API.
curl --user solr:SolrRocks http://localhost:8983/solr/admin/authentication -H 'Content-type:application/json' -d '>'
V2 API.
curl --user solr:SolrRocks http://localhost:8983/api/cluster/secur ... entication -H 'Content-type:application/json' -d '>'
Delete a User.
The delete-user command allows you to remove a user. The user password does not need to be sent to remove a user. In the following example, we’ve asked that user IDs 'tom' and 'harry' be removed from the system.
V1 API.
curl --user solr:SolrRocks http://localhost:8983/solr/admin/authentication -H 'Content-type:application/json' -d ''
V2 API.
curl --user solr:SolrRocks http://localhost:8983/api/cluster/secur ... entication -H 'Content-type:application/json' -d ''
Set a Property.
Set properties for the authentication plugin. The currently supported properties for the Basic Authentication plugin are blockUnknown , realm and forwardCredentials .
V1 API.
curl --user solr:SolrRocks http://localhost:8983/solr/admin/authentication -H 'Content-type:application/json' -d '>'
V2 API.
curl --user solr:SolrRocks http://localhost:8983/api/cluster/secur ... entication -H 'Content-type:application/json' -d '>'
The authentication realm defaults to solr and is displayed in the WWW-Authenticate HTTP header and in the Admin UI login page. To change the realm, set the realm property:
V1 API.
curl --user solr:SolrRocks http://localhost:8983/solr/admin/authentication -H 'Content-type:application/json' -d '>'
V2 API.
curl --user solr:SolrRocks http://localhost:8983/api/cluster/secur ... entication -H 'Content-type:application/json' -d '>'
Edit Plugin Configuration Using the MultiAuthPlugin.
When using the MultiAuthPlugin , you need to wrap the command data with a single-keyed object that identifies the scheme . For instance, the set-user command for the Basic plugin would be:
"set-user" : "basic" : "tom" : "TomIsCool" , "harry" : "HarrysSecret" > > >
Set a property on the Basic plugin when using the MultiAuthPlugin :
"set-property" : "basic" : "realm" : "My Solr users" > > >
Using Basic Auth with SolrJ.
There are two main ways to use SolrJ with Solr servers protected by basic authentication: either the permissions can be set on each individual request, or the underlying http client can be configured to add credentials to all requests that it sends.
Per-Request Basic Auth Credentials.
The simplest way to setup basic authentication in SolrJ is use the setBasicAuthCredentials method on each request as in this example:
SolrRequest req ; //create a new request object req . setBasicAuthCredentials ( userName , password ); solrClient . request ( req );
QueryRequest req = new QueryRequest ( new SolrQuery ( "*:*" )); req . setBasicAuthCredentials ( userName , password ); QueryResponse rsp = req . process ( solrClient );
While this is method is simple, it can often be inconvenient to ensure the credentials are provided everywhere they’re needed. It also doesn’t work with the many SolrClient methods which don’t consume SolrRequest objects.
Per-Client Credentials.
Http2SolrClient supports setting the credentials at the client level when building it. This will ensure all requests issued with this particular client get the Basic Authentication headers set.
Http2SolrClient client = new Http2SolrClient . Builder ( solrUrl ) . withBasicAuthCredentials ( userName , password ). build (); QueryResponse rsp = req . process ( client );
CloudHttp2SolrClient supports receiving an Http2SolrClient.Builder instance for creating its internal client, so to set the credentials at the client level you could use a code like:
Http2SolrClient . Builder http2ClientBuilder = Http2SolrClient . Builder (). withBasicAuthCredentials ( userName , password ); CloudHttp2SolrClient client = new CloudHttp2SolrClient . Builder ( zkHostList , chroot ) . withInternalClientBuilder ( http2ClientBuilder ). build (); QueryResponse rsp = req . process ( client );
Global (JVM) Basic Auth Credentials.
Alternatively, users can use SolrJ’s PreemptiveBasicAuthClientBuilderFactory to add basic authentication credentials to all requests automatically. To enable this feature, users should set the following system property -Dsolr.httpclient.builder.factory=org.apache.solr.client.solrj.impl.PreemptiveBasicAuthClientBuilderFactory . PreemptiveBasicAuthClientBuilderFactory allows applications to provide credentials in two different ways:
The basicauth system property can be passed, containing the credentials directly (e.g., -Dbasicauth=username:password ). This option is straightforward, but may expose the credentials in the command line, depending on how they’re set. The solr.httpclient.config system property can be passed, containing a path to a properties file holding the credentials. Inside this file the username and password can be specified as httpBasicAuthUser and httpBasicAuthPassword , respectively.
httpBasicAuthUser = my_username httpBasicAuthPassword = secretPassword.
Using the Solr Control Script with Basic Auth.
Add the following line to the solr.in.sh or solr.in.cmd file. This example tells the bin/solr command line to to use "basic" as the type of authentication, and to pass credentials with the user-name "solr" and password "SolrRocks":
SOLR_AUTH_TYPE = "basic" SOLR_AUTHENTICATION_OPTS = "-Dbasicauth=solr:SolrRocks"
В©2021 Apache Software Foundation. All rights reserved. Site Version: 8.11 Site last generated: 2021-11-16.
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