mdw@git.distorted.org.uk Git - rcheck/blob - rcheck

   1 #! /bin/sh
   2 ###
   3 ### Run everyday health checks on remote systems.
   4
   5 set -e
   6 prog=$0
   7 while
   8   case "$prog" in */*) ;; *) prog=./$prog ;; esac
   9   cd "${prog%/*}"
  10   [ -L "${prog##*/}" ]
  11 do
  12   prog=$(readlink "${prog##*/}")
  13 done
  14
  15 args=""
  16 usage () {
  17   echo "usage: ${0##*/} [-[MIN-][MAX]] [HOST...]"
  18 }
  19 while :; do
  20   case $# in 0) break ;; esac
  21   case $1 in
  22     -) break ;;
  23     --) shift; break ;;
  24     -*[!0-9]*-* | -*-*[!0-9]*) usage >&2; exit 1 ;;
  25     -*-) a=${1#-}; a=${a%-}; args="$a" ;;
  26     -*-*) a=${1#-}; b=${a#*-}; a=${a%-*}; args="$a $b" ;;
  27     -*[!0-9]*) usage >&2; exit 1 ;;
  28     -*) a=${1#-}; args="0 $a" ;;
  29     *) break ;;
  30   esac
  31   shift
  32 done
  33 case $# in 0) set -- $(expand-list /etc/slaves :rcheck_hosts) ;; esac
  34
  35 exec 4>&1
  36 rc=0
  37 for host in "$@"; do
  38   nrc=$(
  39     exec 5>&1
  40     { { { set +e
  41           tar czf - check check.d |
  42           ssh "$host" '
  43 set -e
  44 cd /tmp
  45
  46 i=0
  47 while :; do
  48   tmpdir=check.$$.$i
  49   if mkdir -m700 $tmpdir >/dev/null 2>&1; then break; fi
  50   case $i in
  51     500) echo >&2 "failed to create temporary directory"; exit 125 ;;
  52   esac
  53   i=$((i + 1))
  54 done
  55 trap "cd /; rm -rf /tmp/$tmpdir" INT TERM QUIT HUP EXIT
  56 cd $tmpdir
  57
  58 tar xzf -
  59 ./check'" $args"
  60           rc=$?; set -e; echo $rc >&5
  61           case $rc in
  62             0) ;;
  63             *) echo >&2 "remote check process failed (rc = $rc)" ;;
  64           esac
  65         } 1>&3; } 2>&1 |
  66       sed 's/^/!!! /'
  67     } 3>&1 |
  68     if IFS= read -r line; then
  69       cat <<EOF
  70 ###--------------------------------------------------------------------------
  71 ### $host
  72
  73 $line
  74 EOF
  75       cat
  76     fi >&4
  77   )
  78   if [ $nrc -gt $rc ]; then rc=$nrc; fi
  79 done
  80
  81 exit $rc