SOLVED: Logstash: how to expand numeric ranges? eg. 1-5 → 1 2 3 4 5

[jose_d]

Hi, i'm trying to analyze aggregated information from slurm HPC scheduler, and need to expand ranges like
n[1-3,10-11] to n1,n2,n3,n10,n11.
Could it be done with some existing filter?

[magnusbaeck (Magnus Bäck)]

No, you'll have to use a ruby filter.

[jose_d]

thx, solved with ruby filter and nodeset from clustershell project:

#expand nodelist, when present:

if "slurm_nodelist" in [tags] {
  ruby {
    code => "slurm_nodelist=event.get('slurm_nodelist');expanded_nodelist=`nodeset -e #{slurm_nodelist}`; event.set('nodelist', expanded_nodelist)"
  }
}