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Mastering SaltStack

You're reading from   Mastering SaltStack Take charge of SaltStack to automate and configure enterprise-grade environments

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Product type Paperback
Published in Aug 2015
Publisher
ISBN-13 9781785282164
Length 306 pages
Edition 1st Edition
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Author (1):
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Joseph Hall Joseph Hall
Author Profile Icon Joseph Hall
Joseph Hall
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Toc

Table of Contents (13) Chapters Close

Preface 1. Reviewing a Few Essentials 2. Diving into Salt Internals FREE CHAPTER 3. Exploring Salt SSH 4. Managing Tasks Asynchronously 5. Taking Salt Cloud to the Next Level 6. Using Salt with REST 7. Understanding the RAET Protocol 8. Strategies for Scaling 9. Monitoring with Salt 10. Exploring Best Practices 11. Troubleshooting Problems Index

Using the raw SSH mode

Salt SSH is very powerful in its default mode with salt-thin. However, there are some situations where it makes more sense to issue a raw SSH command. This can be accomplished using the --raw flag (referred to in its short form as -r from here on for brevity).

Using the raw mode will bypass all the overhead of creating and deploying the thin package. Just log in to the target, issue a command, and log out. The following two commands are functionally identical:

# salt-ssh myminion cmd.run date
myminion:
    Fri Apr  3 21:07:43 MDT 2015
# salt-ssh -r myminion date
myminion:
    ----------
    retcode:
        0
    stderr:
    stdout:
        Fri Apr  3 21:07:43 MDT 2015

However, the raw command will execute faster because it has less overhead. It will also contain more information, such as STDERR, STDOUT, and the exit or return code from the command that was issued as well.

This can be useful if you wrap Salt SSH with another program that depends on the output (especially...

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