xcat-core/xCAT/postscripts/xcatflowrequest
jbjohnso 246362ca48 Leave no processes or files behind on exit, allow updatenode to happily exit
Actually retry every interval rather than just endlessly listening

git-svn-id: https://svn.code.sf.net/p/xcat/code/xcat-core/trunk@16635 8638fb3e-16cb-4fca-ae20-7b5d299a9bcd
2013-06-14 14:39:12 +00:00

32 lines
1.1 KiB
Bash

#!/bin/bash
# IBM(c) 2013 EPL license http://www.eclipse.org/legal/epl-v10.html
# This routine when called, contacts xcatd. It will return to the caller when xcatd is
# ready to process the request
# It is called by xcatdsklspost before calling getpostscripts.awk
# it is called by remoteshell before calling getcredentials.awk
#
exec 13<>/dev/udp/$1/$2
echo "resourcerequest: xcatd" >&13
parpid=$$
touch /tmp/goahead.$parpid
touch /tmp/killme.$parpid
exec 2> /dev/null
while ! grep 'resourcerequest: ok' /tmp/goahead.$parpid > /dev/null; do
(
echo "resourcerequest: xcatd" >&13
exec 14<>/proc/self/stat
read mystat<&14
mypid=$(echo $mystat|cut -d " " -f 4)
(sleep $(((RANDOM%60)+120)).$((RANDOM%50)); if [ -f /tmp/killme.$parpid ]; then kill -TERM $mypid; fi) &
echo $! > /tmp/sleeperpid.$parpid
exec awk '{print $0 > "/tmp/goahead.'$parpid'";exit}' <&13
)
done
sleeper=$(cat /tmp/sleeperpid.$parpid)
sleeper=$(ps -ef|awk "\$3==$sleeper"|awk '{print $2}')
kill -TERM $sleeper
rm /tmp/goahead.$parpid
rm /tmp/sleeperpid.$parpid
rm /tmp/killme.$parpid