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Building Conductor From Source

Build and Run

In this article we will explore how you can set up Conductor on your local machine for trying out some of its features.


  1. JDK 11 or greater
  2. (Optional) Docker if you want to run tests. You can install docker from here.
  3. Node for building and running UI. Instructions at
  4. Yarn for building and running UI. Instructions at

Steps to build Conductor Server

1. Checkout the code

Clone conductor code from the repo:

$ git clone

2. Build and run Server

NOTE for Mac users: If you are using a new Mac with an Apple Silicon Chip, you must make a small change to conductor/grpc/build.gradle - adding "osx-x86_64" to two lines:

protobuf {
    protoc {
        artifact = "${revProtoBuf}:osx-x86_64"
    plugins {
        grpc {
            artifact = "io.grpc:protoc-gen-grpc-java:${revGrpc}:osx-x86_64"

You may also need to install rosetta:

softwareupdate --install-rosetta
$ cd conductor
conductor $ cd server
server $ ../gradlew bootRun

Navigate to the swagger API docs: http://{{ server_host }}/swagger-ui/index.html?configUrl=/api-docs/swagger-config


Download and Run

As an alternative to building from source, you can download and run the pre-compiled JAR.

export CONDUCTOR_VER=3.3.4
export REPO_URL=
curl $REPO_URL/$CONDUCTOR_VER/conductor-server-$CONDUCTOR_VER-boot.jar \
--output conductor-server-$CONDUCTOR_VER-boot.jar; java -jar conductor-server-$CONDUCTOR_VER-boot.jar 
Navigate to the swagger URL: http://{{ server_host }}/swagger-ui/index.html?configUrl=/api-docs/swagger-config

Build and Run UI

Conductor UI from Source

The UI is a standard create-react-app React Single Page Application (SPA). To get started, with Node 14 and yarn installed, first run yarn install from within the /ui directory to retrieve package dependencies.

$ cd conductor/ui
ui $ yarn install

There is no need to "build" the project unless you require compiled assets to host on a production web server. If the latter is true, the project can be built with the command yarn build.

To run the UI on the bundled development server, run yarn run start. Navigate your browser to http://localhost:5000. The server must already be running on port 8080.

ui $ yarn run start

Launch UI http://localhost:5000

conductor ui


  1. By default in-memory persistence is used, so any workflows created or executed will be wiped out once the server is terminated.
  2. Without indexing configured, the search functionality in UI will not work and will result an empty set.
  3. See how to install Conductor using Docker with persistence and indexing.