Applies to BloodHound Enterprise and CE

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Configuration Elements

Configuration elements with a . in their name are part of a nested JSON configuration block: tls.cert_file translates to the following JSON structure: 
{
  "tls": {
    "cert_file": "/path/to/cert"
  }
}

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version

Version of the configuration file. This is useful for detecting when new, breaking configuration changes occur.

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bind_addr

Bind address for the API. Example: <host>:<port>

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slow_query_threshold

Threshold in milliseconds for caching queries.

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max_graphdb_cache_size

Number of cache items for graph queries.

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max_api_cache_size

Number of cache items for API utilities.

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metrics_port

Bind address for the tool and metric API. This port is sensitive and access must be guarded! Example: <host>:<port>

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root_url

External facing HTTP URL that represents the root path for the application. Example: http://localhost/

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work_dir

Local directory for storing work files and temporary ingest artifacts. Example: /opt/bhe/work

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log_level

Default log level for the application. This parameter may be set to one of the following values:
  • "DEBUG"
  • "INFO"
  • "ERROR"

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tls

TLS configuration to start the BloodHound API using HTTPS.

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tls.cert_file

Path to the TLS certificate file.

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tls.key_file

Path to the TLS certificate signing key.

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graph_driver

Determines the driver to use when accessing the graph database. This parameter may be set to one of the following values:
  • "neo4j"
  • "pg"

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database

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database.connection

Primary database connection URL. This URL must be specified in one of the following formats:
  • "postgresql://user:password@host:port/db_name"

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neo4j

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neo4j.connection

Graph database connection URL when Neo4j is enabled. This URL must be specified in one of the following formats:
  • "neo4j://user:password@host:port/db_name"

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crypto

Cryptographic configuration settings.

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crypto.jwt

JWT configuration settings.

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crypto.jwt.signing_key

Base64 encoded byte array for signing key for user session JWTs. This value must be 32 bytes in length when decoded as the JWT signing method used by the API is HMAC-SHA2-256.

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crypto.argon2

Argon2 cryptographic settings for password enabled authentication.

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crypto.argon2.memory_kibibytes

Amount of memory the Argon2 password hash function should utilize. See the recommended parameters section of the Argon2 specification for further information about this value.

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crypto.argon2.num_iterations

Number of iterations the Argon2 password hash function should execute. See the recommended parameters section of the Argon2 specification for further information about this value.

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crypto.argon2.num_threads

Number of threads the Argon2 password hash function should utilize during digest. See the recommended parameters section of the Argon2 specification for further information about this value.

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saml

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saml.sp_cert

Certificate that the API instance should use when presenting as a SAML Service Provider.

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saml.sp_key

Private RSA key that the API instance should use when presenting as a SAML Service Provider.

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saml.sp_ca_chain

Certificate chain that contains the signing authority for the certificate and private key the API instance should use when presenting as a SAML Service Provider.

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default_admin

Default admin user configuration details. This configuration drives the creation of the first user that may log in and finish setting up the BloodHound instance.

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default_admin.principal_name

Principal name of the default admin user. Deprecated

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default_admin.password

Initial password for the default admin user.

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default_admin.email_address

Email address for the default admin user.

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default_admin.first_name

First name for the default admin user.

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default_admin.last_name

Last name for the default admin user.

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default_admin.expire_now

Expires the default admin user’s initial password, requiring a password reset on first logon. This parameter may be set to one of the following values:
  • true
  • false

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collectors_bucket_url

Collector bucket URL for collectors sourced upstream. For BloodHound Enterprise internal use only.

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collectors_base_path

Collector base path for collectors sourced upstream. For BloodHound Enterprise internal use only.

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datapipe_interval

Interval in seconds that the service will wait before checking for new data.

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enable_startup_wait_period

Enables a startup wait period that defers ingest and analysis until a given amount of time. This parameter may be set to one of the following values:
  • true
  • false

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enable_api_logging

Enables API HTTP request logging. This parameter may be set to one of the following values:
  • true
  • false

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enable_cypher_mutations

Enables graph database mutations via the cypher search endpoint. This parameter may be set to one of the following values:
  • true
  • false

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disable_analysis

Disables graph data analysis. This parameter may be set to one of the following values:
  • true
  • false

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disable_cypher_complexity_limit

Disables cypher complexity limiting. This parameter may be set to one of the following values:
  • true
  • false

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disable_ingest

Disables graph data ingest. This parameter may be set to one of the following values:
  • true
  • false

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disable_migrations

Disables database migrations. This parameter may be set to one of the following values:
  • true
  • false

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graph_query_memory_limit

Graph query memory limit in gigabytes.

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fedramp_eula_text

Text to display for the alternative FedRAMP EULA acceptance page.

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enable_text_logger

Enables text output instead of JSON output for the API log. This parameter may be set to one of the following values:
  • true
  • false

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recreate_default_admin

Allow recreating the default admin account to help with lockouts/loading database dumps. This parameter may be set to one of the following values:
  • true
  • false

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OS Environment Config Format

An operator may set any option via an environment variable by prefixing it with bhe_ and replacing dots (.) with underscores (_): 
export bhe_bind_addr="192.168.100.100"
export bhe_root_url="https://example.com"
export bhe_database_connection="postgres://bhe:weneedbetterpasswords@localhost:5432/bhe"
export bhe_neo4j_connection="neo4j://bhe:weneedbetterpasswords@localhost:7687/bhe"

bhapi

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Example JSON Configuration

An operator may use the below example to author a JSON configuration: 
{
  "version": 1,
  "bind_addr": "0.0.0.0:8080",
  "root_url": "http://0.0.0.0:8080/",
  "work_dir": "/opt/bhe_work",
  "log_level": "INFO",
  "tls": {
    "cert_file": "",
    "key_file": ""
  },
  "graph_driver": "pg",
  "database": {
    "connection": "postgresql://bhe:bhe4eva@localhost/bhe"
  },
  "default_admin": {
    "principal_name": "admin",
    "password": "admin",
    "first_name": "Initial",
    "last_name": "Admin",
    "expire_now": true
  },
  "crypto": {
    "jwt": {
      "signing_key": "<BASE64_ENCODED_32_BYTE_KEY>"
    },
    "argon2": {
      "memory_kibibytes": 1048576,
      "num_iterations": 4,
      "num_threads": 4
    }
  },
  "saml": {
    "sp_cert": "CERT CONTENT",
    "sp_key": "-----BEGIN PRIVATE KEY-----\nKEY CONTENT\n-----END PRIVATE KEY-----"
  },
  "graph_query_memory_limit": 2
}