uctl is an enhanced version of flytectl, the Flyte command-line tool, that lets you manage not only Flyte entities (projects, domains, workflows, tasks, and launch plans) but also Union-specific entities like users, roles, and Union configurations.

You can find full documentation here.

To install uctl, you can use Homebrew on macOS or curl on macOS, Linux, or Windows.

To download manually, see the uctl releases.

To use Homebrew, do this:

brew tap unionai/homebrew-tap
brew install uctl

If you already have uctl and want to upgrade to latest version:

brew update
brew upgrade uctl

To use curl, set BINDIR to the install location (it defaults to ./bin) and run the following command:

curl -sL https://raw.githubusercontent.com/unionai/uctl/main/install.sh | bash

To use curl, set BINDIR to the install location (it defaults to ./bin) and run the following command:

curl -sL https://raw.githubusercontent.com/unionai/uctl/main/install.sh | bash

To use curl, in a Linux shell (such as WSL), set BINDIR to the install location (it defaults to ./bin) and run the following command:

curl -sL https://raw.githubusercontent.com/unionai/uctl/main/install.sh | bash

To configure uctl to connect to your Union instance, run the following command:

uctl config init --host <union-host-url>

Where <union-host-url> is the URL of your Union instance.

This will create a new configuration file at ~/.union/config.yaml:

union:
  connection:
    host: dns:///<union-host-url>
    insecure: false
  auth:
    type: Pkce
admin:
  endpoint: dns:///<union-host-url>
  insecure: false
  authType: Pkce

The uctl CLI will use this configuration file to connect to your Union instance by default unless you override it. The search order for finding the configuration file is:

• --config <path-to-config> flag.
• UNION_CONFIG environment variable: the same variable as used by the union CLI.
• UCTL_CONFIG environment variable: for backward compatibility with earlier versions of uctl.
• ~/.union/config.yaml: the default, and the one created by the command above.
• ~/.uctl/config.yaml: for backward compatibility with earlier versions of uctl.

For details on the parameters in the configuration file, see CLI Authentication.

For details on the union CLI, see union CLI.