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# Valet labs for Jenkins
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# Migrating from Jenkins to Actions with Valet
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This lab bootstraps a Valet environment using GitHub Codespaces and enables you to spin up a Jenkins instance against which to run the Valet CI/CD migration tool.
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The instructions below will guide you through configuring a GitHub Codespace environment that will be used in subsequent labs that demonstrate how to use Valet to migrate Jenkins pipelines to GitHub Actions.
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- [Use this repo as a template](#repo-template)
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- [Use Valet with a codespace](#use-valet-with-a-codespace)
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- [Bootstrap Jenkins](#bootstrap-jenkins)
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- [Labs for Jenkins](#labs-for-jenkins)
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- [Troubleshoot GH Valet extension](#troubleshoot-gh-valet-extension)
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- [Troubleshooting Jenkins](#troubleshooting-jenkins)
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These steps **must** be completed prior to starting other labs.
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## Repo template
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## Create your own repository for these labs
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1. Verify you are in your own Repository created from the landing page [Valet Labs](https://github.com/valet-customers/labs).
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1. Ensure that you have created a repository using the [valet-customers/labs](https://github.com/valet-customers/labs) as a template.
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## Use Valet with a codespace
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## Configure your Codespace
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1. Start the codespace
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- Click the `Code` with button down arrow above repository on the repository's landing page.
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- Click the `Codespaces` tab
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- Click `Create codespaces on main` to create the codespace. If you are in another branch then the `main` branch, the codespace will button will have the current branch specified.
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- Wait a couple minutes, then verify that the codespace starts up. Once it is fully booted up, the terminal should be present.
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2. Verify Valet CLI is installed and working. More information on the [GitHub Valet CLI extension](https://github.com/github/gh-valet)
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- Verify Valet CLI is installed and working
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- Run the following command in the Visual Studio Code terminal:
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1. Start a new Codespace.
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```
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gh valet version
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```
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- Click the `Code` with button down arrow above repository on the repository's landing page.
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- Click the `Codespaces` tab
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- Click `Create codespaces on main` to create the codespace.
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- After the Codespace has initialized there will be a terminal present.
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- Verify the output looks like the below image. Note the valet version will be different than below as the latest version gets pulled down.
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- If `gh valet version` did not produce a similar image with a version please follow these instructions [Troubleshoot GH Valet extension](#troubleshoot-gh-valet-extension)
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2. Verify the Valet CLI is installed and working. More information on the Valet extension for the official GitHub CLI can be found [here](https://github.com/github/gh-valet).
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<img width="836" alt="Screen Shot 2022-08-10 at 1 45 20 PM" src="https://user-images.githubusercontent.com/19557880/186771327-631e8839-3614-4ab7-8108-818b5a0c6e93.png">
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- Run the following command in the codespace's terminal:
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## Bootstrap Jenkins
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```bash
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gh valet version
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```
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1. Run the Jenkins setup script. This script will setup Jenkins and ensure it is ready to use. In general, this script should be run first if you are starting a new codespace or restarting an existing one.
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- Verify the output is similar to the image below. The version information may differ than what is shown below.
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- If `gh valet version` did not produce similar output then please follow the troubleshooting [guide](#troubleshoot-the-valet-cli).
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- Navigate to the terminal within your Codespace.
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- Run the following command to kick off the creation of your Jenkins instance:
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```
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## Bootstrap a Jenkins server
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1. Execute the Jenkins setup script that will start a container with a Jenkins server running inside of it. This script should be executed when starting a new Codespace or restarting an existing one.
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- Run the following command from the codespace's terminal to start a Jenkins server:
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```bash
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./jenkins/bootstrap/setup.sh
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```
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- After a couple seconds, a pop-up box should appear with a link to the forwarded URL for your Jenkins instance.
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- You can also access the forwarded URL by going to the `Ports` tab in your terminal. Right click on the URL listed under the `Local Address` and clicking the `Open in Browser` tab.
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- Once you have navigated to the url, the following default credentials have been assigned:
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- After some time, a pop-up box should appear with a link to the URL for your Jenkins server.
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- You can also access the URL by going to the `Ports` tab in your terminal. Right click on the URL listed under the `Local Address` and click the `Open in Browser` tab.
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- username: `admin`
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- password: `password`
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2. Open the Jenkins server in your browser and use the following credentials to authenticate:
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2. Click the `Sign in` button and you should now see your new Jenkins instance with a few pre-populated pipelines.
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- Username: `admin`
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- Password: `password`
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- Once authenticated, you should see a Jenkins server with a few predefined pipelines.
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## Labs for Jenkins
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Perform the following labs to test-drive Valet
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- [Configure Valet to work with Jenkins](valet-configure-lab.md#configure-valet-to-work-with-jenkins)
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- [Audit Jenkins using the Valet audit command](valet-audit-lab.md#audit-jenkins-pipelines-using-the-valet-audit-command)
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- [Dry-run the migration of an Jenkins pipeline to GitHub Actions](valet-dry-run-lab.md#dry-run-the-migration-of-a-jenkins-pipeline-to-github-actions)
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- [Using Custom Transformers in a dry-run](valet-custom-transformers-lab.md#using-custom-transformers-in-a-dry-run)
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- [Migrate an Jenkins Project to GitHub Actions](valet-migrate-lab.md#migrate-a-jenkins-project-to-github-actions)
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- [Forecast the usage of a Jenkins namespace](valet-forecast-lab.md#forecast-the-runner-usage-of-a-jenkins-instance)
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- [Configure credentials for Valet](1-configure.md)
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- [Perform an audit of a Jenkins server](2-audit.md)
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- [Perform a dry-run of a Jenkins pipeline](3-dry-run.md)
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- [Use custom transformers to customize Valet's behavior](4-custom-transformers.md)
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- [Perform a production migration of a Jenkins pipeline](5-migrate.md)
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- [Forecast potential build runner usage](6-forecast.md)
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## Troubleshoot GH Valet extension
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## Troubleshoot the Valet CLI
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Manually Install the GitHub CLI Valet extension. More information on the [GitHub Valet CLI extension](https://github.com/github/gh-valet)
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The CLI extension for Valet can be manually installed by following these steps:
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- Verify you are in the codespace terminal
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- Run this command to install the GitHub Valet extension
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- `gh extension install github/gh-valet`
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- Verify the result of the install is: `✓ Installed extension github/gh-valet`
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- If you get a similar error to the following, click the link to authorize the token
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- Restart Codespace after clicking the link
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- Verify Valet CLI is installed and working by running `gh valet version`
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- Run this command from within the codespace's terminal:
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## Troubleshooting Jenkins
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```bash
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gh extension install github/gh-valet
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```
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1. Navigate to the Docker tab on your left hand side.
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2. Under the `Containers` tab you should see a Docker container `jenkins:valet` listed with a green play button ▶
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- If you see the `jenkins:valet` container, but it has a red stopped symbol next to it ▢, right click on the container and click on `start`, the container should begin running again.
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- If the container does not start even after trying to manually start it, right click on the `jenkins:valet` container and click the `remove` button. Next continue by following all the #bootstrap-jenkins instructions again.
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- Verify the result of the install contains:
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<img width="985" alt="Screen Shot 2022-08-09 at 3 06 46 PM" src="https://user-images.githubusercontent.com/19557880/183770210-c0386616-656e-4fe9-9324-b410ad62c406.png">
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```bash
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✓ Installed extension github/gh-valet
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```
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- If you get an error similar to the image below, then click the link in the terminal output to authorize the token.
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- Restart the codespace after clicking the link.
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- Verify Valet CLI extension is installed and working by running the following command from the codespace's terminal:
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```bash
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gh valet version
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```
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## Troubleshooting the Jenkins server
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Follow these steps if the Jenkins server does not start correctly after running the setup script:
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1. Navigate to the `Docker` tab on the left side of the codespace.
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2. Under the `Containers` tab you should see a docker container named `jenkins:valet` listed with a green play button ▶
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- If you see the `jenkins:valet` container, but it has a red stopped symbol next to it ▢, right click on the container and click on `start`, the container should begin running again.
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- If the container does not start even after trying to manually start it, right click on the `jenkins:valet` container and click the `remove` button. Then, attempt to start the Jenkins server again by following the steps [here](#bootstrap-a-jenkins-server).
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