- [ -z "${apache_key_accesses}" ] && echo >&2 "apache: missing 'Total Accesses' from apache server: ${*}" && return 1
- [ -z "${apache_key_kbytes}" ] && echo >&2 "apache: missing 'Total kBytes' from apache server: ${*}" && return 1
- [ -z "${apache_key_reqpersec}" ] && echo >&2 "apache: missing 'ReqPerSec' from apache server: ${*}" && return 1
- [ -z "${apache_key_bytespersec}" ] && echo >&2 "apache: missing 'BytesPerSec' from apache server: ${*}" && return 1
- [ -z "${apache_key_bytesperreq}" ] && echo >&2 "apache: missing 'BytesPerReq' from apache server: ${*}" && return 1
- [ -z "${apache_key_busyworkers}" ] && echo >&2 "apache: missing 'BusyWorkers' from apache server: ${*}" && return 1
- [ -z "${apache_key_idleworkers}" ] && echo >&2 "apache: missing 'IdleWorkers' from apache server: ${*}" && return 1
- [ -z "${apache_key_scoreboard}" ] && echo >&2 "apache: missing 'Scoreboard' from apache server: ${*}" && return 1
+ [ -z "${apache_key_accesses}" ] && error "missing 'Total Accesses' from apache server: ${*}" && return 1
+ [ -z "${apache_key_kbytes}" ] && error "missing 'Total kBytes' from apache server: ${*}" && return 1
+ [ -z "${apache_key_reqpersec}" ] && error "missing 'ReqPerSec' from apache server: ${*}" && return 1
+ [ -z "${apache_key_bytespersec}" ] && error "missing 'BytesPerSec' from apache server: ${*}" && return 1
+ [ -z "${apache_key_bytesperreq}" ] && error "missing 'BytesPerReq' from apache server: ${*}" && return 1
+ [ -z "${apache_key_busyworkers}" ] && error "missing 'BusyWorkers' from apache server: ${*}" && return 1
+ [ -z "${apache_key_idleworkers}" ] && error "missing 'IdleWorkers' from apache server: ${*}" && return 1
+ [ -z "${apache_key_scoreboard}" ] && error "missing 'Scoreboard' from apache server: ${*}" && return 1