How can I get the free memory available on minions using on salt?

Question

I am looking for a simple way to get information about memory usage, like free memory form the salt minions.

So far I know that the total memory can be listed using salt '*' grains.items but I don't even know how to list only just the total memory instead of the all grains data.

Second problem is that I don't know how to get the free memory returned.

Jeff Bauer · Answer 1 · 2015-05-08T22:30:21.637

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To get the total memory, use grains.item, rather than grains.items:

salt '*' grains.item mem_total

edited May 08 '15 at 22:30

answered Nov 01 '13 at 21:08

Jeff Bauer

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score 10 · Answer 2 · answered Nov 01 '13 at 18:02

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salt targetminion status.meminfo

If you are parsing this, change the output formatting:

salt targetminion status.meminfo --out=json

answered Nov 01 '13 at 18:02

Dan Garthwaite

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Then you can get the total and free memory with the 'jq' command line json parser: `salt targetminion status.meminfo --out=json | jq '.targetminion.MemAvailable.value,.targetminion.MemTotal.value'` will output for exmaple: "27123356" "32802164" – mrossi Sep 07 '18 at 07:09
This is not supported on MacOS unfortunately :( – Maxime Jan 20 '20 at 20:00

Ganesh · Answer 3 · 2016-05-24T10:50:25.337

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Better you use Grains for the same:
salt '*' grains.item mem_total
Please refer:
Grains

edited May 24 '16 at 10:50

answered May 24 '16 at 07:20

Ganesh

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score -2 · Answer 4 · answered Jun 18 '15 at 06:17

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salt '*' disk.usage should give you details about every partition in the minion. Details as in the available space, capacity usage and so on.

answered Jun 18 '15 at 06:17

Paritosh

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score -3 · Accepted Answer · answered Nov 01 '13 at 09:59

-3

So far, I was able to obtain this information using: salt '*' cmd.run 'free -m -o | grep "Mem"' -- maybe somebody else knows a better/easier way.

answered Nov 01 '13 at 09:59

sorin

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How can I get the free memory available on minions using on salt?

5 Answers5