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Ansible for DevOps: Server and configuration management for by Jeff Geerling

By Jeff Geerling

Covers Ansible 2.0!

Ansible is a straightforward, yet strong, server and configuration administration instrument (with a couple of different tips up its sleeve). This booklet is helping these acquainted with the command line and uncomplicated shell scripting begin utilizing Ansible to provision and deal with wherever from one to millions of servers.

The booklet starts with basics, like fitting Ansible, constructing a uncomplicated stock dossier, and uncomplicated ideas, then courses you thru Ansible's many makes use of, together with ad-hoc instructions, uncomplicated and complex playbooks, software deployments, multiple-provider server provisioning, or even Docker orchestration! every thing is defined with pertinent real-world examples, usually utilizing Vagrant-managed digital machines.

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Var Files that vary with time. This directory contains files that the operating system creates, deletes, reads, and writes to. For instance, when you print a document, a temporary file holding the formatted text gets written to the /var/spool directory. It's deleted when the print job finishes. For instance, when you print a document, Linux creates an output file to send to the printer â but first it stores, temporarily, the output in /var/spool/lp. After the document is printed, Linux deletes the temporary file.

Flash memory's small size and big capacity makes it ideal for backing up your files. Backing up Windows XP with a wizard No need to conjure up Harry Potter to save your Windows files. In this chapter, I describe how to use the Microsoft Windows Files and Settings Transfer Wizard to back up your computer. This utility is designed to help you transfer data between old and new computers, but you can also use it to back up your data. It provides the following options to back up: • User account personal data: Your word processing, spreadsheet, music, video, and any other files you've created.

4. Plug a power cable into the drive. When you have your backup media in place, you can start backing up. Here's how you can do that: 1. Reboot, if necessary, into Microsoft Windows. 2. Log in to your computer as a user with administrator privileges. The Owner user account has administrator capability by default. 3. Choose Start All Programs Accessories System Tools Files and Settings Transfer Wizard. The transfer wizard dialog opens. 4. Click Next. The transfer wizard asks you which computer you're on, as you see in Figure 3-1 .

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