Ansible tower workflow examples

The post has following content:. In parts I to III of this blog series, I have made good experience downloading Docker images from Docker Hub instead of installing the software in question.

Also this time, I have tried to do so, but the attempts were less successful. At this point, I had given up following the Docker path for now, even though there are many other public Ansible Tower images on Docker Hub I could test.

Instead, I have found that installing Ansible Tower on a VirtualBox image by using Vagrant is a very convenient way of tackling the installation part. It is recommended for proof of concept purposes only, but it is an officially offered way of creating an Ansible Tower service; see this official documentation. Following this instructionsyou can issue the following commands in order to download, start and connect to the Ansible Tower image:. As an addition to the official documentation, I have added the second command.

If you fail to provide the password in time, you might come back from the coffee break and be surprised by an error with a message like: VBoxManage. This is, because Vagrant does not allow for password login of the root user. Now: where to start? For that, let us have a look at the data model and the dependencies. The data model of Ansible Tower, as provided by the Ansible Tower documentation looks like follows:.

Note that at least for new versions of Ansibleusers can be directly attached to an organization with no need to create a team. The same holds for inventory groups. Okay, the figure might look slightly more complex than the one in the Ansible Tower documentation. This is, because I have added all mandatory parent to child dependencies, similar to the Unified Modeling Language notation.

Note: In the Ansible Tower model, each child has only a single parent, while each parent can have an arbitrary number of children. Let us follow the same order. So, let us start with Step The main reasons as I see it are like follows:. In this blog post we have shown how Vagrant can help to quickly set up a local Ansible Tower trial. At the end, we have compared Ansible Tower with simple command-line based Ansible without Tower.

Diese Website verwendet Akismet, um Spam zu reduzieren. Great article!!! Thanks buddy…. Wird geladen Comments Antwort abbrechen.Ansible delivers simple IT automation that ends repetitive tasks and frees up DevOps teams for more strategic work. Leverage powerful automation across entire IT teams no matter where you are in your automation journey. May 16, by Sean Cavanaugh.

My goal was to be able to have Github PRs Pull Requests to trigger a workflow template to perform some automated testing using an Ansible Tower workflow. This provisioning, testing and teardown allows me to help ensure changes to my Github repo are tested methodically before anything is merged into the master branch.

This also helps save time, and that is what automation is all about. I think the best approach to building an automated workflow is to reduce the test cases to discrete items and test each one to make sure they work repeatedly before adding the next.

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In my case I want to kick off a job template launch, which makes Ansible Tower run the entire workflow. Its goal is to make CLI interaction with web services as human-friendly as possible. The above HTTPie command will launch job 84, which is a unique identifier for my workflow job template.

You can see what job id represents your job by using the browsable API and listing the jobs out or using the Web UI and looking at the browser window address bar. Click the green button and name your workflow file I just used the default. This will default you into the Visual editor.

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You can name the workflow here. When creating a Github Action you create a workflow file, if using the Visual editor it will be creating this workflow file for you. For my use case I only want to trigger something on a Pull Request. A Pull Request is how someone from the community will try to merge a change into the Github repository. As you can see my Github Action workflow file is pretty simple. This seemed very simple in the Visual Editor, you can click on the Action and add secrets.

Now I simply created a test repo in my organization to play around with my new Github Action workflow. I submitted a test PR from one test branch to another one and it shows up after only seconds!The example highlights the effectiveness of Ansible Tower for automating infrastructure operations, especially in a team environment. Throughout this book, all the examples use Ansible's CLI to run playbooks and report back the results. For smaller teams, especially when everyone on the team is well-versed in how to use Ansible, YAML syntax, and follows security best practices with playbooks and variables files, using the CLI can be a sustainable approach.

Ansible Tower checks off these itemsand many moreand provides a great mechanism for team-based Ansible usage. The product is currently free for teams managing ten or fewer servers it's basically an 'unlimited trial' modeand has flexible pricing for teams managing dozens to thousands of servers.

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While this book includes a brief overview of Tower, and how you can get started with Tower, it is highly recommended that you read through Ansible, Inc's extensive Tower User Guidewhich includes details this book won't be covering such as LDAP integration and multiple-team playbook management workflows. Ansible has a very thorough Ansible Tower User Guidewhich details the installation and configuration of Ansible Tower.

For the purposes of this chapter, since we just want to download and try out Tower locally, we are going to use Ansible's official Vagrant box to quickly build an Ansible Tower VM. Make sure you have Vagrant and VirtualBox installed, then create a directory e. The above installation instructions and Vagrant box come from a blog post on Ansible's official blog, Ansible Tower and Vagrant. At this point, you will need to register a free trial license of Ansible Tower, which can be done following the instructions on the screen.

The free trial allows you to use all of Tower's features for up to 10 servers, and is great for experimenting and seeing how Tower fits into your workflow.

After you get the license it's a block of JSON which you paste into the license fieldyou should get to Tower's default dashboard page:. Ansible Tower is centered around the idea of organizing Projects which run your playbooks via Jobs and Inventories which describe the servers on which your playbooks should be run inside of Organizations. Organizations can then be set up with different levels of access based on Users and Credentials grouped in different Teams.

It can be a little overwhelming at first, but once you get the initial structure configured, you'll see how powerful and flexible Tower's Project workflow is. The first step is to make sure you have a test playbook you can run using Ansible Tower.

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Generally, your playbooks should be stored in a source code repository e. Git or Subversionwith Tower configured to check out the latest version of the playbook from the repository and run it. Switch back to your web browser and get everything set up to run the test playbook inside Ansible Tower's web UI:. If you can login to a system, Tower likely supports the login mechanism! Now that we have all the structure for running playbooks configured, we need only create a Job Template so we can run the playbook on the localhost and see whether we've succeeded.

Click on 'Job Templates', and create a new Job Template with the following configuration:. Save the Job Template, then click the small Rocketship button to start a job using the template.

You'll be redirected to a Job status page, which provides live updates of the job status, and then a summary of the playbook run when complete:. You can view the playbook run's standard output in real-time or review it after the fact with the 'View standard out' button. You can also stop a running job, delete a job's record, or relaunch a job with the same parameters using the respective buttons on the job's page.

The job's dashboard page is very useful for giving an overview of how many hosts were successful, how many tasks resulted in changes, and the timing of the different parts of the playbook run. In our simple walkthrough above, we used Tower to run a simple playbook on the local server; setting up Tower to run playbooks on real-world infastructure or other local VMs is just as easy, and the tools Ansible Tower provides are very handy, especially when working in larger team environments.

This book won't walk through the entirety of Ansible Tower's documentation, but a few other simple features you should try out include:.

Ansible tower workflow examples

Ansible Tower is purpose-built for use with Ansible playbooks, but there are many other ways to run playbooks on your servers with a solid workflow. If price is a major concern, and you don't need all the bells and whistles Tower provides, you can use other popular tools like JenkinsRundeckor Go CI.

All these tools provide flexiblity and security for running Ansible Playbooks, and each one requires a different amount of setup and configuration before it will work well for common usage scenarios.

Ansible Workflow

One of the most popular and long-standing CI tools is Jenkins, so we'll explore how to configure a similar Playbook run in Jenkins next. Automating Your Automation with Ansible Tower.Ansible delivers simple IT automation that ends repetitive tasks and frees up DevOps teams for more strategic work.

Leverage powerful automation across entire IT teams no matter where you are in your automation journey. January 9, by Bianca Henderson. Suppose you have a workflow set up in Red Hat Ansible Tower with several steps and needed another user to view and approve some or all of the nodes in the workflow. Or maybe a job is running inside of a workflow but it should be viewed and approved within a specific time limit, or else get canceled automatically?

Perhaps it would be useful to be able to see how a job failed before something like a cleanup task gets set off?

It is now possible to insert a step in between any job template or workflow within that workflow in order to achieve these objectives. The Workflow Approval Node feature has been available in Ansible Tower since the release of version 3. In order to visually compare the additional functionality, examine the before and after examples of a workflow job template below:.

You can easily create approval nodes just like any other workflow node, via the Workflow Visualizer in the Ansible Tower UI:. From here, you will see Approval as a node type that you can add, with a specific name required as well as a description and timeout optional :.

When an approval node needs attention, a bell icon on the top right corner of the screen newly added for this feature!

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Simply click on that icon to view details for those approval nodes:. Another way to be alerted to when an approval node needs review is for notifications to be set on the Approval level. When a notification is set in this manner, it will alert the recipient when any approval node inside of that workflow :.

And below is how default Slack notifications look like for approval nodes:. Most notification types will include a URL to view the job in need of attention, for ease of review. For more information on how to enable and disable notifications in Ansible Tower, see the documentation page on this topic. Note: Customized notifications work for approvals, too! See the Ansible Tower documentation about this customized template feature to learn more. Another added detail that increases the usefulness of this feature is the Timeout option.

Since RBAC is an important part of Ansible Tower, we wanted to make sure that there would be very specific permissions related to approval nodes. Below is a chart that shows details at-a-glance:.Workflows allow you to configure a sequence of disparate job templates or workflow templates that may or may not share inventory, playbooks, or permissions.

A workflow accomplishes the task of tracking the full set of jobs that were part of the release process as a single unit. Job or workflow templates are linked together using a graph-like structure called nodes. These nodes can be jobs, project syncs, or inventory syncs.

A template can be part of different workflows or used multiple times in the same workflow. A copy of the graph structure is saved to a workflow job when you launch the workflow.

Ansible and Ansible Tower: best practices from the field

Workflows utilize the same behavior hierarchy of variable precedence as Job Templates with the exception of three additional variables. The three additional variables include:. Workflows included in a workflow will follow the same variable precedence - they will only inherit variables if they are specifically prompted for, or defined as part of a survey. In this example, there are two playbooks that can be combined in a workflow to exercise artifact passing:.

In the workflow scheme, canceling a job cancels the branch, while canceling the workflow job cancels the entire workflow. To edit and delete a workflow job template, you must have the admin role. To create a workflow job template, you must be an organization admin or a system admin.

You must have execute access to a job template to add it to a workflow job template. Other tasks such as the ability to make a duplicate copy and re-launch a workflow can also be performed, depending on what kinds of permissions are granted to a particular user. Generally, you should have permissions to all the resources used in a workflow like job templates before relaunching or making a copy.

For more information on performing the tasks described in this section, refer to the Ansible Tower Administration Guide. Are you using the latest and greatest version of Ansible Tower? Find the Ansible Tower documentation set which best matches your version of Tower. Ansible Tower User Guide v3.A workflow job template links together a sequence of disparate resources that accomplishes the task of tracking the full set of jobs that were part of the release process as a single unit.

These resources may include:. The menu opens a list of the workflow and job templates that are currently available. The default view is collapsed Compactshowing the template name, template type, and the statuses of the jobs that ran using that template, but you can click Expanded to view more information. This list is sorted alphabetically by name, but you can sort by other criteria, or search by various fields and attributes of a template.

From this screen, you can launchcopyand remove a job template.

ansible tower workflow examples

Before deleting a job template, be sure it is not used in a workflow job template. Only workflow templates have the Workflow Visualizer icon as a shortcut for accessing the workflow editor. Workflow templates can be used as building blocks for another workflow template.

Ansible Tower – a Hello World Example

Many parameters in a workflow template allow you to enable Prompt on Launch that can be modified at the workflow job template level, and do not affect the values assigned at the individual workflow template level. For instructions, see the Workflow Visualizer section. Upon Saveadditional fields populate and the Workflow Visualizer automatically opens. For additional information on setting up webhooks, see Working with Webhooks. Pass extra command line variables to the playbook. These variables have a maximum value of precedence and overrides other variables specified elsewhere.

An example value might be:. For more information about extra variables, refer to Extra Variables. Saving the template exits the Workflow Template page and the Workflow Visualizer opens to allow you to build a workflow. See the Workflow Visualizer section for further instructions. Otherwise, you may close the Workflow Visualizer to return to the Details tab of the newly saved template in order to review, edit, add permissions, notifications, schedules, and surveys, or view completed jobs and build a workflow template at a later time.

Alternatively, you can click Launch to launch the workflow, but you must first save the template prior to launching, otherwise, the Launch button remains grayed-out. Also, note the Notifications tab is present only after the template has been saved. You can verify the template is saved when the newly created workflow template appears on the list of templates at the bottom of the screen.

If an inventory was specified on the workflow template, the inventory displays in the Templates list view. Clicking on Permissions allows you to review, grant, edit, and remove associated permissions for users as well as team members.

Click the button to create new permissions for this workflow template. In this example, two users and one team have been selected and each have been granted permissions for this Workflow Template.

Note that you do not have to choose between teams or users, and that you can assign permissions to both at the same time.GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. If nothing happens, download GitHub Desktop and try again. If nothing happens, download Xcode and try again.

ansible tower workflow examples

If nothing happens, download the GitHub extension for Visual Studio and try again. Ansible Tower now supports approval gates for workflows! This blog post is a great place to start. I have archived this repository since the native approval gates should be used.

ansible tower workflow examples

An enterprise architect wants to insert approval gates into the workflows they are responsible for managing that run playbooks from various different teams. A system build team wants to require approval before launching a workflow that provisions machines.

The idea behind this project is that a workflow can be split at any edge that requires an approval to traverse. This means there will be multiple workflows that actually function as a larger one. Each approval gate creates an approval request that is represented by a job template that only the approval team specific to the approval gate that created it can execute.

Automating Your Automation with Ansible Tower

The approval request job template will launch the next workflow and set all current workflow artifacts as extra variables. Any extra variables set on the approval gate job template itself will also be passed on to the next workflow. It must be configured to authenticate with the target Ansible Tower server and the associated user account must have system administrator type so that the necessary resources can be created in Tower. All configuration of Tower has been automated.

The very first thing that needs to be done is configuring your tower-cli to use a system administrator user. It is recommended to create a new user specifically for this project. The automation will actually create credentials in Tower keep in mind these are encrypted so that job templates can leverage them.

ansible tower workflow examples

This will configure Tower with all necessary resources to enable creating an approval gate job template. To create an approval gate job template perform the following:. After performing these steps when a user launches the workflow the gate job template will create an approval request job template that is configured to launch the next job.

The next job is only launched if the approver actually approves the request. Skip to content. This repository has been archived by the owner. It is now read-only. Dismiss Join GitHub today GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together.

Sign up. Branch: master. Find file. Sign in Sign up. Go back. Launching Xcode If nothing happens, download Xcode and try again. Latest commit Fetching latest commit…. Use Case Examples An enterprise architect wants to insert approval gates into the workflows they are responsible for managing that run playbooks from various different teams. At the end of a workflow approval is required in order to make a change in production.

Overview The idea behind this project is that a workflow can be split at any edge that requires an approval to traverse. Each role also has its own README: approval-base approval-gate-config approval-gate Requirements tower-cli must be installed on the Ansible control host that runs this role.

Usage All configuration of Tower has been automated.


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