check-chef-run.sh

#!/bin/sh

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# Check and report status of chef run (Nagios/Icinga/Sensu)

# s = status code (0=OK, 1=ERROR, 2=WARN, 3=UNKNOWN)
# m = message string
# e = errors (0=OK, 2=WARN)
# em = error message string (last real)
# ee = error message string (last)

# NOTE: Ignore error code '35' (reboot)

log="${1:-/var/log/chef-run.log}"

exec awk '
    BEGIN { s=3; m="Unknown"; e=0; em="" }
    / Starting Chef Run / { m=$0; s=3; e=0; em=""; ee="" }
    / ERROR: / { e=2; ee=$0 }
    / FATAL.*exit code ([^3]|3[^5])/ { m=$0; em=ee; s=1 }
    / Chef Run complete / { m=$0; em=ee; s=e }
    END { if (s != 0) { print em } print m; exit s }
  ' $log