- Elasticsearch Guide: other versions:
- Elasticsearch introduction
- Getting started with Elasticsearch
- Set up Elasticsearch
- Installing Elasticsearch
- Configuring Elasticsearch
- Important Elasticsearch configuration
- Important System Configuration
- Bootstrap Checks
- Heap size check
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- Starting Elasticsearch
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- Adding nodes to your cluster
- Set up X-Pack
- Configuring X-Pack Java Clients
- Bootstrap Checks for X-Pack
- Upgrade Elasticsearch
- API conventions
- Document APIs
- Search APIs
- Aggregations
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- Avg Aggregation
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- Indices APIs
- Create Index
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- Token Filters
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- Exclude mode settings example
- Classic Token Filter
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- Managing the index lifecycle
- Getting started with index lifecycle management
- Policy phases and actions
- Set up index lifecycle management policy
- Using policies to manage index rollover
- Update policy
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- SQL access
- Overview
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- OpenID Connect Prepare Authentication API
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- Transform APIs
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- Definitions
- Secure a cluster
- Overview
- Configuring security
- Encrypting communications in Elasticsearch
- Encrypting communications in an Elasticsearch Docker Container
- Enabling cipher suites for stronger encryption
- Separating node-to-node and client traffic
- Configuring an Active Directory realm
- Configuring a file realm
- Configuring an LDAP realm
- Configuring a native realm
- Configuring a PKI realm
- Configuring a SAML realm
- Configuring a Kerberos realm
- Security files
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- How security works
- User authentication
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- File-based user authentication
- LDAP user authentication
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- PKI user authentication
- SAML authentication
- Kerberos authentication
- Integrating with other authentication systems
- Enabling anonymous access
- Controlling the user cache
- Configuring SAML single-sign-on on the Elastic Stack
- Configuring single sign-on to the Elastic Stack using OpenID Connect
- User authorization
- Auditing security events
- Encrypting communications
- Restricting connections with IP filtering
- Cross cluster search, clients, and integrations
- Tutorial: Getting started with security
- Tutorial: Encrypting communications
- Troubleshooting
- Some settings are not returned via the nodes settings API
- Authorization exceptions
- Users command fails due to extra arguments
- Users are frequently locked out of Active Directory
- Certificate verification fails for curl on Mac
- SSLHandshakeException causes connections to fail
- Common SSL/TLS exceptions
- Common Kerberos exceptions
- Common SAML issues
- Internal Server Error in Kibana
- Setup-passwords command fails due to connection failure
- Failures due to relocation of the configuration files
- Limitations
- Alerting on cluster and index events
- Command line tools
- How To
- Testing
- Glossary of terms
- Release highlights
- Breaking changes
- Release notes
- Elasticsearch version 7.2.1
- Elasticsearch version 7.2.0
- Elasticsearch version 7.1.1
- Elasticsearch version 7.1.0
- Elasticsearch version 7.0.0
- Elasticsearch version 7.0.0-rc2
- Elasticsearch version 7.0.0-rc1
- Elasticsearch version 7.0.0-beta1
- Elasticsearch version 7.0.0-alpha2
- Elasticsearch version 7.0.0-alpha1
Get token API
editGet token API
editCreates a bearer token for access without requiring basic authentication.
Request
editPOST /_security/oauth2/token
Description
editThe tokens are created by the Elasticsearch Token Service, which is automatically enabled
when you configure TLS on the HTTP interface. See Encrypting HTTP Client communications. Alternatively,
you can explicitly enable the xpack.security.authc.token.enabled
setting. When
you are running in production mode, a bootstrap check prevents you from enabling
the token service unless you also enable TLS on the HTTP interface.
The get token API takes the same parameters as a typical OAuth 2.0 token API except for the use of a JSON request body.
A successful get token API call returns a JSON structure that contains the access token, the amount of time (seconds) that the token expires in, the type, and the scope if available.
The tokens returned by the get token API have a finite period of time for which
they are valid and after that time period, they can no longer be used. That time
period is defined by the xpack.security.authc.token.timeout
setting. For more
information, see Token service settings.
If you want to invalidate a token immediately, you can do so by using the invalidate token API.
Request Body
editThe following parameters can be specified in the body of a POST request and pertain to creating a token:
-
grant_type
-
(string) The type of grant. Supported grant types are:
password
,client_credentials
andrefresh_token
. -
password
-
(string) The user’s password. If you specify the
password
grant type, this parameter is required. This parameter is not valid with any other supported grant type. -
refresh_token
-
(string) If you specify the
refresh_token
grant type, this parameter is required. It contains the string that was returned when you created the token and enables you to extend its life. This parameter is not valid with any other supported grant type. -
scope
-
(string) The scope of the token. Currently tokens are only issued for a scope of
FULL
regardless of the value sent with the request. -
username
-
(string) The username that identifies the user. If you specify the
password
grant type, this parameter is required. This parameter is not valid with any other supported grant type.
Examples
editThe following example obtains a token using the client_credentials
grant type,
which simply creates a token as the authenticated user:
POST /_security/oauth2/token { "grant_type" : "client_credentials" }
The following example output contains the access token, the amount of time (in seconds) that the token expires in, and the type:
{ "access_token" : "dGhpcyBpcyBub3QgYSByZWFsIHRva2VuIGJ1dCBpdCBpcyBvbmx5IHRlc3QgZGF0YS4gZG8gbm90IHRyeSB0byByZWFkIHRva2VuIQ==", "type" : "Bearer", "expires_in" : 1200 }
The token returned by this API can be used by sending a request with a
Authorization
header with a value having the prefix Bearer ` followed
by the value of the `access_token
.
curl -H "Authorization: Bearer dGhpcyBpcyBub3QgYSByZWFsIHRva2VuIGJ1dCBpdCBpcyBvbmx5IHRlc3QgZGF0YS4gZG8gbm90IHRyeSB0byByZWFkIHRva2VuIQ==" http://localhost:9200/_cluster/health
The following example obtains a token for the test_admin
user using the
password
grant type:
POST /_security/oauth2/token { "grant_type" : "password", "username" : "test_admin", "password" : "x-pack-test-password" }
The following example output contains the access token, the amount of time (in seconds) that the token expires in, the type, and the refresh token:
{ "access_token" : "dGhpcyBpcyBub3QgYSByZWFsIHRva2VuIGJ1dCBpdCBpcyBvbmx5IHRlc3QgZGF0YS4gZG8gbm90IHRyeSB0byByZWFkIHRva2VuIQ==", "type" : "Bearer", "expires_in" : 1200, "refresh_token": "vLBPvmAB6KvwvJZr27cS" }
To extend the life of an existing token obtained using the password
grant type,
you can call the API again with the refresh token within 24 hours of the token’s
creation. For example:
POST /_security/oauth2/token { "grant_type": "refresh_token", "refresh_token": "vLBPvmAB6KvwvJZr27cS" }
The API will return a new token and refresh token. Each refresh token may only be used one time.
{ "access_token" : "dGhpcyBpcyBub3QgYSByZWFsIHRva2VuIGJ1dCBpdCBpcyBvbmx5IHRlc3QgZGF0YS4gZG8gbm90IHRyeSB0byByZWFkIHRva2VuIQ==", "type" : "Bearer", "expires_in" : 1200, "refresh_token": "vLBPvmAB6KvwvJZr27cS" }
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