Uctl CLI

The uctl CLI provides functionality for Union administrators to manage Union-specific entities like users, roles, and Union configuration.

It also includes much of the functionality of the union CLI, but since it is a compiled binary (written in Go), it is faster and more efficient than the Python-based union CLI and more suitable for situations like running in a CI/CD environment where you might want to avoid the overhead of large Python dependencies.

If you are not a Union administrator, or if you will be interacting with Union in an environment where Python is installed, you should use the union CLI instead.

Installation

macOS

Linux

Windows

To install uctl on a Mac, use Homebrew, curl, or manually download the binary.

Homebrew

        
$ brew tap unionai/homebrew-tap
$ brew install uctl

curl

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

Manual download

To download the binary manually, see the uctl releases page.

To install uctl on Linux, use curl or manually download the binary.

curl

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

Manual download

To download the binary manually, see the uctl releases page.

To install uctl on Windows, use curl or manually download the binary.

curl

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

Manual download

To download the binary manually, see the uctl releases page.

Configuration

To create a configuration file that contains your Union connection information, run the following command, replacing <union-host-url> with the URL of your Union instance:

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

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

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

PKCE is the default authentication type. To specify a different authentication type in the configuration file, see CLI authentication types.

Configuration file location hierarchy

By default, the uctl CLI will use the configuration file at ~/.union/config.yaml to connect to your Union instance unless you override it. uctl searches for configuration files in the following order:

--config <path-to-config> flag
UNION_CONFIG environment variable
UCTL_CONFIG environment variable
~/.union/config.yaml file
~/.uctl/config.yaml file

Options

Option	Type	Description
`--admin.audience`	string	Audience to use when initiating OAuth2 authorization requests.
`--admin.authType`	string	Type of OAuth2 flow used for communicating with admin.ClientSecret, Pkce, ExternalCommand are valid values (default “ClientSecret”)
`--admin.authorizationHeader`	string	Custom metadata header to pass JWT
`--admin.authorizationServerUrl`	string	This is the URL to your IdP’s authorization server. It’ll default to Endpoint
`--admin.caCertFilePath`	string	Use specified certificate file to verify the admin server peer.
`--admin.clientId`	string	Client ID (default “flytepropeller”)
`--admin.clientSecretEnvVar`	string	Environment variable containing the client secret
`--admin.clientSecretLocation`	string	File containing the client secret (default “/etc/secrets/client_secret”)
`--admin.command`	strings	Command for external authentication token generation
`--admin.defaultServiceConfig`	string
`--admin.deviceFlowConfig.pollInterval`	string	amount of time the device flow would poll the token endpoint if auth server doesn’t return a polling interval. Okta and google IDP do return an interval’ (default “5s”)
`--admin.deviceFlowConfig.refreshTime`	string	grace period from the token expiry after which it would refresh the token. (default “5m0s”)
`--admin.deviceFlowConfig.timeout`	string	amount of time the device flow should complete or else it will be cancelled. (default “10m0s”)
`--admin.endpoint`	string	For admin types, specify where the uri of the service is located.
`--admin.httpProxyURL`	string	OPTIONAL: HTTP Proxy to be used for OAuth requests.
`--admin.insecure`		Use insecure connection.
`--admin.insecureSkipVerify`		InsecureSkipVerify controls whether a client verifies the server’s certificate chain and host name.Caution: shouldn’t be use for production usecases'
`--admin.maxBackoffDelay`	string	Max delay for grpc backoff (default “8s”)
`--admin.maxRetries`	int	Max number of gRPC retries (default 4)
`--admin.perRetryTimeout`	string	gRPC per retry timeout (default “15s”)
`--admin.pkceConfig.refreshTime`	string	grace period from the token expiry after which it would refresh the token. (default “5m0s”)
`--admin.pkceConfig.timeout`	string	Amount of time the browser session would be active for authentication from client app. (default “2m0s”)
`--admin.scopes`	strings	List of scopes to request
`--admin.tokenRefreshWindow`	string	Max duration between token refresh attempt and token expiry. (default “0s”)
`--admin.tokenUrl`	string	OPTIONAL: Your IdP’s token endpoint. It’ll be discovered from flyte admin’s OAuth Metadata endpoint if not provided.
`--admin.useAudienceFromAdmin`		Use Audience configured from admins public endpoint config.
`--admin.useAuth`		Deprecated: Auth will be enabled/disabled based on admin’s dynamically discovered information.
`-c`, `--config`	string	config file (default is $HOME/.flyte/config.yaml)
`--console.endpoint`	string	Endpoint of console, if different than flyte admin
`-d`, `--domain`	string	Specifies the Flyte project’s domain.
`--files.archive`		Pass in archive file either an http link or local path.
`--files.assumableIamRole`	string	Custom assumable iam auth role to register launch plans with.
`--files.continueOnError`		Continue on error when registering files.
`--files.destinationDirectory`	string	Location of source code in container.
`--files.dryRun`		Execute command without making any modifications.
`--files.enableSchedule`		Enable the schedule if the files contain schedulable launchplan.
`--files.force`		Force use of version number on entities registered with flyte.
`--files.k8ServiceAccount`	string	Deprecated. Please use `--K8sServiceAccount`
`--files.k8sServiceAccount`	string	Custom kubernetes service account auth role to register launch plans with.
`--files.outputLocationPrefix`	string	Custom output location prefix for offloaded types (files/schemas).
`--files.sourceUploadPath`	string	Deprecated: Update flyte admin to avoid having to configure storage access from uctl.
`--files.version`	string	Version of the entity to be registered with flyte which are un-versioned after serialization.
`-h`, `--help`		help for uctl
`--logger.formatter.type`	string	Sets logging format type. (default “json”)
`--logger.level`	int	Sets the minimum logging level. (default 3)
`--logger.mute`		Mutes all logs regardless of severity. Intended for benchmarks/tests only.
`--logger.show-source`		Includes source code location in logs.
`-o`, `--output`	string	Specifies the output type - supported formats [TABLE JSON YAML DOT DOTURL]. NOTE: dot, doturl are only supported for Workflow (default “TABLE”)
`-p`, `--project`	string	Specifies the Flyte project.
`--storage.cache.max_size_mbs`	int	Maximum size of the cache where the Blob store data is cached in-memory. If not specified or set to 0, cache is not used
`--storage.cache.target_gc_percent`	int	Sets the garbage collection target percentage.
`--storage.connection.access-key`	string	Access key to use. Only required when authtype is set to accesskey.
`--storage.connection.auth-type`	string	Auth Type to use [iam, accesskey]. (default “iam”)
`--storage.connection.disable-ssl`		Disables SSL connection. Should only be used for development.
`--storage.connection.endpoint`	string	URL for storage client to connect to.
`--storage.connection.region`	string	Region to connect to. (default “us-east-1”)
`--storage.connection.secret-key`	string	Secret to use when accesskey is set.
`--storage.container`	string	Initial container (in s3 a bucket) to create -if it doesn’t exist-.'
`--storage.defaultHttpClient.timeout`	string	Sets time out on the http client. (default “0s”)
`--storage.enable-multicontainer`		If this is true, then the container argument is overlooked and redundant. This config will automatically open new connections to new containers/buckets as they are encountered
`--storage.limits.maxDownloadMBs`	int	Maximum allowed download size (in MBs) per call. (default 2)
`--storage.stow.config`	stringToString	Configuration for stow backend. Refer to github/flyteorg/stow (default [])
`--storage.stow.kind`	string	Kind of Stow backend to use. Refer to github/flyteorg/stow
`--storage.type`	string	Sets the type of storage to configure [s3/minio/local/mem/stow]. (default “s3”)

Commands

uctl apply {uctl-apply/index} is used for updating various Union/Flyte resources, including cluster configs.
uctl config {uctl-config/index} runs various config commands.

uctl create {uctl-create/index} creates various Flyte resources such as tasks, workflows, launch plans, executions, and projects.
uctl delete {uctl-delete/index} terminates/deletes various Flyte resources, such as executions and resource attributes.
uctl demo {uctl-demo/index} provides commands for starting and interacting with a standalone minimal local environment for running Flyte.
uctl get {uctl-get/index} fetches various Flyte resources such as tasks, workflows, launch plans, executions, and projects.
uctl register {uctl-register/index} registers tasks, workflows, and launch plans from a list of generated serialized files.
uctl update {uctl-update/index} update Flyte resources e.g., projects.
uctl version {uctl-version> fetches uctl version.

Entities

Entity	Commands
Cluster resource attribute	`uctl get cluster-resource-attribute` `uctl update cluster resource attribute` `uctl delete cluster resource attribute`
Config	`uctl config init` `uctl config discover` `uctl config docs` `uctl config validate`
Demo	`uctl demo start` `uctl demo status` `uctl demo exec` `uctl demo reload` `uctl demo teardown`
Execution	`uctl create execution` `uctl get execution` `uctl update execution` `uctl delete execution`
Execution cluster label	`uctl get execution-cluster-label` `uctl update execution-cluster-label` `uctl delete execution-cluster-label`
Execution queue attribute	`uctl get execution-queue-attribute` `uctl update execution-queue-attribute` `uctl delete execution-queue-attribute`
Files	`uctl regiser files`
Launch plan	`uctl get launchplan` `uctl update launchplan` `uctl update launchplan-meta`
Plugin override	`uctl get plugin-override` `uctl update plugin-override` `uctl delete plugin-override`
Project	`uctl create project` `uctl get project` `uctl update project`
Task	`uctl get task` `uctl update task-meta`
Task resource attribute	`uctl get task-resource-attribute` `uctl update task-resource-attribute` `uctl delete task-resource-attribute`
Workflow	`uctl get workflow` `uctl update workflow-meta`
Workflow execution config	`uctl get workflow-execution-config` `uctl update workflow-execution-config` `uctl delete workflow-execution-config`