Okta AWS-CLI Tool

This readme file is an excerpt of the Okta-AWS Integration Guide. We highly recommend that you first read it to understand how Okta and AWS integrate with each other.

Important Note: This tool has been verified to work on Mac OS X El Capitan and Windows Server 2012 R2 and is expected to work on Linux and Unix as well.

AWS:reInvent Release (2016/11/29 update)

The Okta AWS-CLI tool finally supports multi-policy cross-account roles!

You can now use this tool with the cross-account role architecture recommended in the Okta-AWS Integration Guide, i.e. you can assign multiple AssumeRole policies to a single cross-account role.

Important note

The AWS-CLI tool currently only supports single-statement policies, i.e. policies with one single AssumeRole action (pointing to a role in a separate account). Additionally, the tool only supports managed policies. Support for inline policies is planned in the near future.

The Okta AWS-CLI Tool allows Okta customers to take advantage of Okta to use the AWS Command Line Interface without relying on permanent AWS keys. More specifically, it allows them to generate temporary 60-minute keys that are stored for each profile in the ~/.aws/credentials file. Additionally, if the AWS environment is leveraging cross-account roles and the AssumeRole AWS function, the tool will be able to detect that you choose to assume a cross-account role and will be able to extract the actual role in the target account as well as add an additional profile line the ~/.aws/config file.

Important note: please note that this tool only supports Okta MFA set up at the organization level (i.e. not at the sign-on policy level).

Setup

• Use git clone https://github.com/oktadeveloper/okta-aws-cli-assume-role.git to clone the repository locally.
• In Terminal, run defaults write com.apple.finder AppleShowAllFiles YES if you want to be able to inspect the ~/.aws/credentials and ~/.aws/config files.

Compiling the application

The application was built and compiled with JetBrains' IntelliJ IDEA. The instructions below explain how to compile the application using IntelliJ IDEA. Note that you don't have to compile the application in order to be able to execute it, since the compiled executable (a jar file) is available on GitHub in the out sub-folder.

Prerequisites

First of all, it goes without saying that you will need to install the Java SE 8x or the Java JDK 8x.

Next, in order to compile the application, you will need to download and install the AWS Java SDK as well as the AWS Command Line Interface. Once you have downloaded the AWS Java SDK, make sure you copy the latest AWS JAR file (currently aws-java-sdk-1.10.74.jar) into the lib folder of this tool (otherwise, you will not be able to compile or run it).

You will also need the Okta Java SDK but we provide a compiled version of it within this repository so there's nothing specific you need to do at this point. We used the following path structure to manage our IntelliJ project: $HOME/Projects/okta-aws-cli-assume-role and we recommend you do the same to avoid fixing too many references. We've also created a lib sub-folder inside the okta-aws-cli-assume-role root folder where we're storing the AWS Java SDK (aws-java-sdk-1.10.74.jar), the Okta Java SDK (okta-sdk.jar) and other dependencies. We strongly recommend that you do the same.

Opening the project with IntelliJ Idea

• Open the IntelliJ Idea IDE and browse to the okta-aws-cli-assume-role folder you have cloned from GitHub inside the Projects folder.
• Go to File => Project Structure and in the Libraries menu, fix the Java references that don't match your local setup.
• Go to Build => Make Project in order to compile the project.
• The project also builds the JAR artifact, so if you browse to the out sub-folder, you will see the oktaawscli.jar JAR artifact.
• Make sure the awscli.command file is in the out sub-folder.

Configuring AWS IAM

Because this tool aims at facilitating your interaction with the AWS CLI, it must be able to look into the role you select to assume in order to figure out whether it's a role with direct permissions on the account, or a cross-account role that allows you to assume a role (with real permissions) in another account. To perform this introspection into the AWS roles, the tool must be granted AIM Read Only Access in AWS so that it can automatically add the proper role_arn and source_profile entries into the AWS config file.

In order to generate the key and secret to be configured in the config.properties file, please follow the steps highlighted in Appendix A: How to create a IAM user for role introspection in the Okta-AWS Integration Guide

Configuring the application

It is essential that config.properties be in the same directory as the oktaawscli.jar file (i.e. in the out directory). The config.properties config file holds information specific to each Okta organization (or "tenant") and needs to be configured on an org to org basis. Please copy it from the src/com/okta/tools folder to the out folder.

Here is the list of parameters that must be maintained in the config.properties file:

• OKTA_ORG which is the url of your Okta org (starting with https://).

• OKTA_AWS_APP_URL is the url link of your Okta AWS application url (see below for more info)

• AWS_IAM_KEY: paste the Access Key ID value you retrieved in the previous section

• AWS_IAM_SECRET: paste the Secret Access Key value you retrieved in the previous section

• Obtaining the AWS app url

  • Navigate to the Admin Dashboard of you Okta organization
  • Select the Applications tab and click on your AWS Application
  • Under the General menu, scroll down to find the App Embed Link section
  • Your link is located under EMBED LINK

• Replace the example values in config.properties with your values

Running the application

• To run the application, you can use the awscli.command file you will find in the out folder. You may need to edit to fix the references to the AWS Java SDK, which we remind you to put into the lib directory.
• Navigate to the out sub-folder with Terminal and run ./awscli.command
• The default command is the following: java -classpath oktaawscli.jar:$HOME/Projects/okta-aws-cli-assume-role/lib/aws-java-sdk-1.10.74.jar:$HOME/Projects/okta-aws-cli-assume-role/lib/okta-sdk.jar com.okta.tools.awscli

Support

Have a question or see a bug? Email developers@okta.com. For feature requests, feel free to open an issue on this repo. If you find a security vulnerability, please follow our Vulnerability Reporting Process.

License

Copyright 2017 Okta, Inc. All rights reserved.

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0.

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.