From 31652d945b348175b6fe3a43880a2448a324787b Mon Sep 17 00:00:00 2001 From: Micah Anderson Date: Tue, 15 Mar 2011 20:04:18 -0400 Subject: instead of using $RANDOM, which isn't POSIX, we get even more esoteric by pulling 2 bytes from /dev/urandom, giving them to od which turns them into unsigned decimals, and then we bitshift the output, either by 5 or 6 depending on if we are replacing $RANDOM/1000*60 (right sift by 5 is the same as dividing by 2^N, or /32) or $RANDOM/2000*60 (range of [0,983]) Thanks to dkg for working through this with me, not only did he come up with it faster than a human brain should be able to function, he had the patience to explain all the individual pieces that I did not understand to me. --- files/cron.d/puppetd.CentOS | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'files/cron.d/puppetd.CentOS') diff --git a/files/cron.d/puppetd.CentOS b/files/cron.d/puppetd.CentOS index 65239ce..a4f84e9 100644 --- a/files/cron.d/puppetd.CentOS +++ b/files/cron.d/puppetd.CentOS @@ -1,5 +1,5 @@ # check if puppet is running -0 * * * * root /etc/init.d/puppet status > /dev/null || (sleep $(($RANDOM/2000*60)) && /etc/init.d/puppet restart) +0 * * * * root /etc/init.d/puppet status > /dev/null || (sleep $(( $(> 6 )) && /etc/init.d/puppet restart) # restart puppet once in a while and randomly delay the restart between 0 and 32 minutes -> splay puppetmaster hammering -0 22 * * */2 root sleep $(($RANDOM/1000*60)) && /etc/init.d/puppet restart > /dev/null +0 22 * * */2 root sleep $(( $(> 5 )) && /etc/init.d/puppet restart > /dev/null -- cgit v1.2.3