2 days ago  Freddie Mac’s new CIO, Frank Nazzaro, knew he had to take a different approach to software development. The company and its customers were demanding digital solutions to. Begin by installing the Mac version of BlackBerry Desktop Manager on the Apple computer. Here’s how to install BlackBerry Desktop Manager on a Mac: Turn on your BlackBerry PlayBook and connect it to a powered-on Mac computer using the supplied USB cable. On the desktop or within Finder, double-click BlackBerry PlayBook CD. Apr 30, 2020 VLC Media Player for Mac is a powerful and efficient app for playing all kinds of media in multiple formats right on your Mac. With this app in place, you can just download and watch what you want. This book brings to life the stories of Dorothy Vaughan, Mary Jackson, Katherine Johnson, and Christine Darden, who lived through the Civil Rights era, the Space Race, the Cold War, and the movement for gender equality, and whose work forever changed the face of NASA and the country.

1. Play Book Software For Mac Pro
2. Football Playbook Software

Welcome to another post in our Getting Started series. Keep reading to learn how to draft a Playbook that can be run in Ansible or Ansible Tower. You can also use it along with the Module Index and the other docs to build your own Playbooks later.

What is a Playbook?

Playbooks are essentially sets of instructions (plays) that you send to run on a single target or groups of targets (hosts). Think about the instructions you get for assembling an appliance or furniture. The manufacturer includes instructions so you can put the parts together in the correct order. When followed in order, the furniture looks like what was purchased.
That's basically how a playbook works.

The Playbook we're building will install a web server on a target RHEL/CentOS 7 host, then write an index.html file based on a template file that will reside with the final Playbook. You'll be able to take the example Playbook and additional files from this blog and test it out for yourself. While going over the example Playbook, we'll explain the modules that are used.

The author adds instructions for the modules to run, often with additional values (arguments, locations, etc.). The target host has modules run against it in the order the Playbook lays out (with includes or other additional files). The host's state is changed (or not) based on the results of the module running, which Ansible and Tower displays in output.

Running Playbooks

Keeping that in mind, you're still going to need to understand a few things about running Playbooks. With the furniture analogy, a Playbook is shorthand to tell the modules to perform a task. You must understand the following to run your Playbook successfully:

Because the Playbooks are providing direction and interactivity with the modules, Ansible assumes you know how to do what you're trying to do and automates it. That's why Playbooks are like instructions or directions - you're telling the automated parts how you want the task configured. You'll still need to understand the target you're running the Playbook against. Best free antivirus mac.

If part of the Playbook needs to start the web server, you're going to need to know how that's done so you know to use the service module and start the web server by name. If the Playbook is installing software, then you have to know how installation is done on the target. You're also still going to need to understand the basics of the tasks being performed. Does the software you're installing have a configuration setup to it? Are there multiple steps that require conditions or argument values? If there are variables that are being passed, these will all need to be understood by those constructing a Playbook as well.

Download free eBook excerpt: Mastering Ansible by Jesse Keating

Example Playbook

We'll share an example Playbook with a simple play to demonstrate what I've explained. The target host will be a RHEL/CentOS 7 base install. There will be a web server installed (NGINX) and then an index.html file will be created in the default webroot. After the install and file tasks are completed the service will be started.
*Note to run this example Playbook with Ansible Tower your inventory and credentials must be configured.

Playbooks start with the YAML three dashes (---) followed by:

Name: good for keeping the Playbooks readable
Hosts: identifies the target for Ansible to run against
Become statements: true statement is included here to ensure nginx installs without a problem (it's not always required)

Dec 18, 2019  With Split View, you can fill your Mac screen with two apps, without having to manually move and resize windows. Enter Split View Split View requires OS X El Capitan or later, and the steps differ slightly based on which macOS you're using. Apr 17, 2020  Change apps from the split-screen view on your Mac the same way as you would with a full-screen app. Use any of the following methods to do so: Hover your mouse at the bottom of the screen to reveal the Dock. Click the app you want to use. Press Cmd + Tab to cycle through your open apps. When you release Cmd your Mac changes to that app.

On the same indent level as the three prior statements will go the tasks: statement, after which any plays are listed another indent deeper (per YAML nesting). There are two tasks listed but both are using the Yum module. The first Yum task is adding the epel-release repo so that nginx can be installed. Once epel is present Yum is used to install the nginx package.

The state: present statement lets Ansible check the state on the target first before performing any further action. In both cases if the repo or package is already present, Ansible knows it doesn't have to do any more for this task and continues.

The default install page for nginx is fine if you want to test that nginx installed properly, but you might have a basic html file that you'd like to have as your confirmation. For simplicity, the template index file is in the same directory I'll run the Playbook from for the example. The destination is simply the default for nginix with no configured sites.

Play Book Software For Mac Pro

The last thing the Playbook will do is make sure that the nginx service has been started (and if not, start it).

The entire Playbook is about the same length as the introduction paragraph:

Recap

Constructing a Playbook is easy, and a lot can be done with a little. This post referenced three modules - yum, template, and service - which installed a software package and a software repo, wrote a file based on a local copy, then started the service it just installed. The Playbook itself was barely longer than that sentence! While this Playbook was run against one host, it could be run against dozens or hundreds or more with very little changed as long as the concepts mentioned earlier are followed. In Tower, this Playbook could be placed in a job template to be run on a group of servers on AWS or locally.

What's Next

In future posts we'll be running more complex Playbooks in Tower for deeper examples of functionality, including posts on using dynamic inventory and running jobs against them.

Football Playbook Software

Want to learn more about how Ansible works? Visit our overview page.