Skip to main content

Workers/Clients Configurations

Client​

LHC_API_HOST​

The bootstrap host for the LH Server.

  • Type: string
  • Default: localhost
  • Importance: high

LHC_API_PORT​

The bootstrap port for the LH Server.

  • Type: int
  • Default: 2023
  • Importance: high

LHC_API_PROTOCOL​

The bootstrap protocol for the LH Server. Valid values: PLAINTEXT and TLS.

  • Type: string
  • Default: PLAINTEXT
  • Importance: high

LHC_CA_CERT​

Optional location of CA Cert file that issued the server side certificates. For TLS and mTLS connection.

  • Type: path
  • Default: null
  • Importance: medium

LHC_CLIENT_CERT​

Optional location of Client Cert file for mTLS connection.

  • Type: path
  • Default: null
  • Importance: medium

LHC_CLIENT_KEY​

Optional location of Client Private Key file for mTLS connection.

  • Type: path
  • Default: null
  • Importance: low

LHC_OAUTH_CLIENT_ID​

Optional OAuth2 Client Id. Used by the Worker to identify itself at an Authorization Server. Client Credentials Flow.

  • Type: string
  • Default: null
  • Importance: low

LHC_OAUTH_CLIENT_SECRET​

Optional OAuth2 Client Secret. Used by the Worker to identify itself at an Authorization Server. Client Credentials Flow.

  • Type: string
  • Default: null
  • Importance: low

LHC_OAUTH_ACCESS_TOKEN_URL​

Optional Access Token URL provided by the OAuth Authorization Server. Used by the Worker to obtain a token using client credentials flow. It is mandatory if LHC_OAUTH_CLIENT_ID and LHC_OAUTH_CLIENT_SECRET are provided.

  • Type: url
  • Default: null
  • Importance: low

LHC_GRPC_KEEPALIVE_TIME_MS​

Time in milliseconds to configure keepalive pings on the grpc client.

  • Type: int64
  • Default: 45000 (45 seconds)
  • Importance: low

LHC_GRPC_KEEPALIVE_TIMEOUT_MS​

Time in milliseconds to configure the timeout for the keepalive pings on the grpc client.

  • Type: int64
  • Default: 5000 (5 seconds)
  • Importance: low

LHCTL​

LHC_OAUTH_SERVER_URL​

Optional Authorization Server URL. Used by the client to obtain a token using OAuth 2 authorization code credentials flow. It is used by OIDC to discover the server endpoints.

It is mandatory if LHC_OAUTH_CLIENT_ID is provided.

  • Type: url
  • Default: null
  • Importance: low

Worker​

LHW_SERVER_CONNECT_LISTENER​

LH Server Listener to connect to.

  • Type: string
  • Default: PLAIN
  • Importance: high

LHW_NUM_WORKER_THREADS​

The number of worker threads to run. It allows you to improve the task execution performance parallelizing the tasks assigned to this worker.

  • Type: int
  • Default: 8
  • Importance: medium

LHW_TASK_WORKER_ID​

Unique identifier for the Task Worker. It is used by the LittleHorse cluster to load balance the worker requests across all servers. Additionally, it is journalled on every TaskAttempt run by the Task Worker, so that you can more easily debug where a request was executed from. It is recommended to set this value for production environments.

  • Type: string
  • Default: a random value
  • Importance: medium

LHW_TASK_WORKER_VERSION​

Optional version identifier. Intended to be informative. Useful when you're running different version of a worker. Along with the LHW_TASK_WORKER_ID, this is journalled on every TaskAttempt.

  • Type: string
  • Default: ""
  • Importance: low