cmd.run which suppresses stdout if successful

[Thomas Güttler]

I use cmd.run at the moment: https://docs.saltstack.com/en/latest/ref/states/all/salt.states.cmd.html#salt.states.cmd.run

Is there a way to suppress stdout if the command was successful and print stdout, if it failed?

I tried this, but the first state does print to stdout.

no_stdout_should_be_visible:
  cmd.run:
    - name: cat /etc/fstab
    - output_loglevel: quiet

stdout_should_be_visible:
  cmd.run:
    - name: cat /etc/fstab /does-not-exist
    - output_loglevel: quiet

Regards,

  Thomas

[Florian Ermisch]

Hi Thomas,

you could just use `chronic` from the
moreutils package:
"chronic: runs a command quietly unless it fails"
https://joeyh.name/code/moreutils/

Should only be a `pkg.install moreutils`
away.

Regards, Florian

[Thomas Güttler]

Hi Florian,

first I thouht chronic is an additional module for salt.

But it is a general purpose command line tool.

The command "chronic" was new to me.

It is available on Ubunt, but unfortunately not directly available

for SuSE-Linux which I need to support.

I could write a simple replacement for chronic with a view python

lines ....

Nevertheless, thank you very much for your help

Regards,

  Thomas

[Ethan Erchinger]

Redirect stdout/stderr to a file with an onfail requisite that cats that file, or success requisite that deletes the file.

[Jeremy McMillan]

It seems to me that you want to do things which might be accomplished better using a different state module than cmd.run.

If not, maybe you should consider cmd.script, and put a literal script in your state, which handles the output as you intend? Also look into helping salt understand the results better by using stateful=true, and capturing the output and state in your script.

[Thomas Güttler]

I like the idea of Florian Ermisch (use command line tool chronic).

Since this tool is not available on my plattform, I can use cmd.script to upload a simple python script

which implements chronic.

Problem solved. Thank you all, for your feedback!