What does the available section in free -m command output mean on Ubuntu 18.04 server?

Question

On a testing server, Elasticsearch is giving this error:

Elasticsearch::Transport::Transport::Errors::ServiceUnavailable ([503] {"error":{"root_cause":[],"type":"search_phase_execution_exception","reason":"all shards failed","phase":"query","grouped":true,"failed_shards":[]},"status":503})

although the service is running fine.

Check whether Elasticsearch service running OK or not:

Then I saw that the memory usage and suspect it to be because of less than the required memory.

Check memory profile:

:~#free -m
              total        used        free      shared  buff/cache   available
Mem:          14681        9716         250        1487        4714        3316
Swap:             0           0           0

What is the available memory in the above output? Can we make use of it?

Please don't post screenshots of text.. Copy the text here and use code formatting. — muru, Jul 16 '20 at 06:21
Does this answer your question? What do the changes in `free` output from 14.04 to 16.04 mean? — muru, Jul 16 '20 at 06:21
Your memory consumptions looks fine, there is nothing you can and should do about it. You should ask about the error and give details on that instead of what you think might be its cause. (See also What is the XY problem?). Not sure though if askubuntu is the right place. — pLumo, Jul 16 '20 at 06:23
Also there might be people having the same issue, e.g. https://stackoverflow.com/questions/21157466/all-shards-failed — pLumo, Jul 16 '20 at 06:26

What does the available section in free -m command output mean on Ubuntu 18.04 server?

0 Answers0