- Elasticsearch Guide: other versions:
- What is Elasticsearch?
- What’s new in 7.10
- Getting started with Elasticsearch
- Set up Elasticsearch
- Installing Elasticsearch
- Configuring Elasticsearch
- Setting JVM options
- Secure settings
- Auditing settings
- Circuit breaker settings
- Cluster-level shard allocation and routing settings
- Cross-cluster replication settings
- Discovery and cluster formation settings
- Field data cache settings
- HTTP
- Index lifecycle management settings
- Index management settings
- Index recovery settings
- Indexing buffer settings
- License settings
- Local gateway settings
- Logging
- Machine learning settings
- Monitoring settings
- Node
- Network settings
- Node query cache settings
- Search settings
- Security settings
- Shard request cache settings
- Snapshot lifecycle management settings
- Transforms settings
- Transport
- Thread pools
- Watcher settings
- Important Elasticsearch configuration
- Important System Configuration
- Bootstrap Checks
- Heap size check
- File descriptor check
- Memory lock check
- Maximum number of threads check
- Max file size check
- Maximum size virtual memory check
- Maximum map count check
- Client JVM check
- Use serial collector check
- System call filter check
- OnError and OnOutOfMemoryError checks
- Early-access check
- G1GC check
- All permission check
- Discovery configuration check
- Bootstrap Checks for X-Pack
- Starting Elasticsearch
- Stopping Elasticsearch
- Discovery and cluster formation
- Add and remove nodes in your cluster
- Full-cluster restart and rolling restart
- Remote clusters
- Set up X-Pack
- Configuring X-Pack Java Clients
- Plugins
- Upgrade Elasticsearch
- Index modules
- Mapping
- Text analysis
- Overview
- Concepts
- Configure text analysis
- Built-in analyzer reference
- Tokenizer reference
- Token filter reference
- Apostrophe
- ASCII folding
- CJK bigram
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- Classic
- Common grams
- Conditional
- Decimal digit
- Delimited payload
- Dictionary decompounder
- Edge n-gram
- Elision
- Fingerprint
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- Keep types
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- Keyword marker
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- KStem
- Length
- Limit token count
- Lowercase
- MinHash
- Multiplexer
- N-gram
- Normalization
- Pattern capture
- Pattern replace
- Phonetic
- Porter stem
- Predicate script
- Remove duplicates
- Reverse
- Shingle
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- Stemmer override
- Stop
- Synonym
- Synonym graph
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- Unique
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- Word delimiter
- Word delimiter graph
- Character filters reference
- Normalizers
- Index templates
- Data streams
- Ingest node
- Search your data
- Query DSL
- Aggregations
- Bucket aggregations
- Adjacency matrix
- Auto-interval date histogram
- Children
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- Date range
- Diversified sampler
- Filter
- Filters
- Geo-distance
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- Global
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- IP range
- Missing
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- Parent
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- Terms
- Variable width histogram
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- Metrics aggregations
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- Bucket aggregations
- EQL
- SQL access
- Overview
- Getting Started with SQL
- Conventions and Terminology
- Security
- SQL REST API
- SQL Translate API
- SQL CLI
- SQL JDBC
- SQL ODBC
- SQL Client Applications
- SQL Language
- Functions and Operators
- Comparison Operators
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- Math Operators
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- LIKE and RLIKE Operators
- Aggregate Functions
- Grouping Functions
- Date/Time and Interval Functions and Operators
- Full-Text Search Functions
- Mathematical Functions
- String Functions
- Type Conversion Functions
- Geo Functions
- Conditional Functions And Expressions
- System Functions
- Reserved keywords
- SQL Limitations
- Scripting
- Data management
- ILM: Manage the index lifecycle
- Overview
- Concepts
- Automate rollover
- Manage Filebeat time-based indices
- Index lifecycle actions
- Configure a lifecycle policy
- Migrate index allocation filters to node roles
- Resolve lifecycle policy execution errors
- Start and stop index lifecycle management
- Manage existing indices
- Skip rollover
- Restore a managed data stream or index
- Monitor a cluster
- Frozen indices
- Roll up or transform your data
- Set up a cluster for high availability
- Snapshot and restore
- Secure a cluster
- Overview
- Configuring security
- User authentication
- Built-in users
- Internal users
- Token-based authentication services
- Realms
- Realm chains
- Active Directory user authentication
- File-based user authentication
- LDAP user authentication
- Native user authentication
- OpenID Connect authentication
- 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
- Built-in roles
- Defining roles
- Granting access to Stack Management features
- Security privileges
- Document level security
- Field level security
- Granting privileges for data streams and index aliases
- Mapping users and groups to roles
- Setting up field and document level security
- Submitting requests on behalf of other users
- Configuring authorization delegation
- Customizing roles and authorization
- Enabling audit logging
- 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
- Watch for cluster and index events
- Command line tools
- How To
- Glossary of terms
- REST APIs
- API conventions
- Compact and aligned text (CAT) APIs
- cat aliases
- cat allocation
- cat anomaly detectors
- cat count
- cat data frame analytics
- cat datafeeds
- cat fielddata
- cat health
- cat indices
- cat master
- cat nodeattrs
- cat nodes
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- cat plugins
- cat recovery
- cat repositories
- cat segments
- cat shards
- cat snapshots
- cat task management
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- cat thread pool
- cat trained model
- cat transforms
- Cluster APIs
- Cluster allocation explain
- Cluster get settings
- Cluster health
- Cluster reroute
- Cluster state
- Cluster stats
- Cluster update settings
- Nodes feature usage
- Nodes hot threads
- Nodes info
- Nodes reload secure settings
- Nodes stats
- Pending cluster tasks
- Remote cluster info
- Task management
- Voting configuration exclusions
- Cross-cluster replication APIs
- Data stream APIs
- Document APIs
- Enrich APIs
- Graph explore API
- Index APIs
- Add index alias
- Analyze
- Clear cache
- Clone index
- Close index
- Create index
- Delete index
- Delete index alias
- Delete component template
- Delete index template
- Delete index template (legacy)
- Flush
- Force merge
- Freeze index
- Get component template
- Get field mapping
- Get index
- Get index alias
- Get index settings
- Get index template
- Get index template (legacy)
- Get mapping
- Index alias exists
- Index exists
- Index recovery
- Index segments
- Index shard stores
- Index stats
- Index template exists (legacy)
- Open index
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- Put index template (legacy)
- Put component template
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- Type exists
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- Update index alias
- Update index settings
- Resolve index
- List dangling indices
- Import dangling index
- Delete dangling index
- Index lifecycle management APIs
- Ingest APIs
- Info API
- Licensing APIs
- Machine learning anomaly detection APIs
- Add events to calendar
- Add jobs to calendar
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- Create jobs
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- Create datafeeds
- Create filters
- Delete calendars
- Delete datafeeds
- Delete events from calendar
- Delete filters
- Delete forecasts
- Delete jobs
- Delete jobs from calendar
- Delete model snapshots
- Delete expired data
- Estimate model memory
- Find file structure
- Flush jobs
- Forecast jobs
- Get buckets
- Get calendars
- Get categories
- Get datafeeds
- Get datafeed statistics
- Get influencers
- Get jobs
- Get job statistics
- Get machine learning info
- Get model snapshots
- Get overall buckets
- Get scheduled events
- Get filters
- Get records
- Open jobs
- Post data to jobs
- Preview datafeeds
- Revert model snapshots
- Set upgrade mode
- Start datafeeds
- Stop datafeeds
- Update datafeeds
- Update filters
- Update jobs
- Update model snapshots
- Machine learning data frame analytics APIs
- Create data frame analytics jobs
- Create trained models
- Update data frame analytics jobs
- Delete data frame analytics jobs
- Delete trained models
- Evaluate data frame analytics
- Explain data frame analytics
- Get data frame analytics jobs
- Get data frame analytics jobs stats
- Get trained models
- Get trained models stats
- Start data frame analytics jobs
- Stop data frame analytics jobs
- Migration APIs
- Reload search analyzers API
- Repositories metering APIs
- Rollup APIs
- Search APIs
- Searchable snapshots APIs
- Security APIs
- Authenticate
- Change passwords
- Clear cache
- Clear roles cache
- Clear privileges cache
- Clear API key cache
- Create API keys
- Create or update application privileges
- Create or update role mappings
- Create or update roles
- Create or update users
- Delegate PKI authentication
- Delete application privileges
- Delete role mappings
- Delete roles
- Delete users
- Disable users
- Enable users
- Get API key information
- Get application privileges
- Get builtin privileges
- Get role mappings
- Get roles
- Get token
- Get users
- Grant API keys
- Has privileges
- Invalidate API key
- Invalidate token
- OpenID Connect prepare authentication
- OpenID Connect authenticate
- OpenID Connect logout
- SAML prepare authentication
- SAML authenticate
- SAML logout
- SAML invalidate
- SSL certificate
- Snapshot and restore APIs
- Snapshot lifecycle management APIs
- Transform APIs
- Usage API
- Watcher APIs
- Definitions
- Migration guide
- Release notes
- Elasticsearch version 7.10.2
- Elasticsearch version 7.10.1
- Elasticsearch version 7.10.0
- Elasticsearch version 7.9.3
- Elasticsearch version 7.9.2
- Elasticsearch version 7.9.1
- Elasticsearch version 7.9.0
- Elasticsearch version 7.8.1
- Elasticsearch version 7.8.0
- Elasticsearch version 7.7.1
- Elasticsearch version 7.7.0
- Elasticsearch version 7.6.2
- Elasticsearch version 7.6.1
- Elasticsearch version 7.6.0
- Elasticsearch version 7.5.2
- Elasticsearch version 7.5.1
- Elasticsearch version 7.5.0
- Elasticsearch version 7.4.2
- Elasticsearch version 7.4.1
- Elasticsearch version 7.4.0
- Elasticsearch version 7.3.2
- Elasticsearch version 7.3.1
- Elasticsearch version 7.3.0
- 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
- Dependencies and versions
Cross cluster search and security
editCross cluster search and security
editCross cluster search enables federated search across multiple clusters. When using cross cluster search with secured clusters, all clusters must have the Elasticsearch security features enabled.
The local cluster (the cluster used to initiate cross cluster search) must be allowed to connect to the remote clusters, which means that the CA used to sign the SSL/TLS key of the local cluster must be trusted by the remote clusters.
User authentication is performed on the local cluster and the user and user’s roles are passed to the remote clusters. A remote cluster checks the user’s roles against its local role definitions to determine which indices the user is allowed to access.
This feature was added as Beta in Elasticsearch v5.3
with further improvements made in
5.4 and 5.5. It requires gateway eligible nodes to be on v5.5
onwards.
To use cross cluster search with secured clusters:
-
Enable the Elasticsearch security features on every node in each connected cluster.
For more information about the
xpack.security.enabled
setting, see Security Settings in Elasticsearch. - Enable encryption globally. To encrypt communications, you must enable enable SSL/TLS on every node.
-
Enable a trust relationship between the cluster used for performing cross cluster search (the local cluster) and all remote clusters. This can be done either by:
- Using the same certificate authority to generate certificates for all connected clusters, or
- Adding the CA certificate from the local cluster as a trusted CA in each remote cluster (see Transport TLS settings).
- On the local cluster, ensure that users are assigned to (at least) one role that exists on the remote clusters. On the remote clusters, use that role to define which indices the user may access. (See User authorization).
-
Configure the local cluster to connect to remote clusters as described in Configuring Remote Clusters. For example, the following configuration adds two remote clusters to the local cluster:
PUT _cluster/settings { "persistent": { "cluster": { "remote": { "cluster_one": { "seeds": [ "10.0.1.1:9300" ] }, "cluster_two": { "seeds": [ "10.0.2.1:9300" ] } } } } }
Example Configuration of Cross Cluster Search
editIn the following example, we will configure the user alice
to have permissions
to search any data stream or index starting with logs-
in cluster two
from
cluster one
.
First, enable cluster one
to perform cross cluster search on remote cluster
two
by running the following request as the superuser on cluster one
:
PUT _cluster/settings { "persistent": { "cluster.remote.cluster_two.seeds": [ "10.0.2.1:9300" ] } }
Next, set up a role called cluster_two_logs
on both cluster one
and
cluster two
.
On cluster one
, this role does not need any special privileges:
POST /_security/role/cluster_two_logs { }
On cluster two
, this role allows the user to query local indices called
logs-
from a remote cluster:
POST /_security/role/cluster_two_logs { "cluster": [], "indices": [ { "names": [ "logs-*" ], "privileges": [ "read", "read_cross_cluster" ] } ] }
Finally, create a user on cluster one
and apply the cluster_two_logs
role:
POST /_security/user/alice { "password" : "somepassword", "roles" : [ "cluster_two_logs" ], "full_name" : "Alice", "email" : "alice@example.com", "enabled": true }
With all of the above setup, the user alice
is able to search indices in
cluster two
as follows:
Cross-cluster search and Kibana
editWhen Kibana is used to search across multiple clusters, a two-step authorization process determines whether or not the user can access data streams and indices on a remote cluster:
- First, the local cluster determines if the user is authorized to access remote clusters. (The local cluster is the cluster Kibana is connected to.)
- If they are, the remote cluster then determines if the user has access to the specified data streams and indices.
To grant Kibana users access to remote clusters, assign them a local role
with read privileges to indices on the remote clusters. You specify data streams and indices in a remote cluster as <remote_cluster_name>:<target>
.
To enable users to actually read the remote data streams and indices, you must create a matching
role on the remote clusters that grants the read_cross_cluster
privilege
and access to the appropriate data streams and indices.
For example, if Kibana is connected to the cluster where you’re actively indexing Logstash data (your local cluster) and you’re periodically offloading older time-based indices to an archive cluster (your remote cluster) and you want to enable Kibana users to search both clusters:
-
On the local cluster, create a
logstash_reader
role that grantsread
andview_index_metadata
privileges on the locallogstash-*
indices.If you configure the local cluster as another remote in Elasticsearch, the
logstash_reader
role on your local cluster also needs to grant theread_cross_cluster
privilege. -
Assign your Kibana users a role that grants
access to Kibana
as well as your
logstash_reader
role. -
On the remote cluster, create a
logstash_reader
role that grants theread_cross_cluster
privilege andread
andview_index_metadata
privileges for thelogstash-*
indices.