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Howdy Ho,
I think I've gotten most of the major bugs worked out of this. It's been
running a few days on several machines, and seems to do what we want. We put
this cron script in the /etc/cron.daily directory.
I really don't plan on you putting this into the product, I just wanted to
show you what we are doing.
A few notes
1) Yes, it does need to be cleaned up a bit, as far as commented out lines,
and more comments for readability.
2) Yes, we know that doing yum install is risky (see workgroups). We keep
tight control on those sections on the server. (not that we don't with the
rest of the server, but you know what I mean)
3) Yes, we do clean up the users regular yum area at the end. For fermi, we
have good bandwith pretty much everywhere. It is much more likely that a user
won't know about the clean command, fill up his disk with old rpms, and yell
at us, than he will complain because he has to download another rpm.
Troy
--
__________________________________________________
Troy Dawson dawson@xxxxxxxx (630)840-6468
Fermilab ComputingDivision/OSS CSI Group
__________________________________________________
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#!/bin/sh
#
# Yum cron file
# Designed to work with Fermilab's workgroups
# Designed to only send mail when something has been updated or installed
#
# Written by Troy Dawson <dawson@xxxxxxxx>
#
#Change DEBUG to 0 to turn on debugging
DEBUG=0
MAXWAITTIME=60
MAILLIST="root"
#MAILLIST="root,me@xxxxxxxxxxxx,you@xxxxxxxxxxxxxx"
#*******************************************
# Function to ping a server
# Return 0 - alive and able to access
# Return 1 - failed
#*******************************************
ping_server() {
TESTSERVER=$1
/usr/bin/ncftpls -t 5 -r 1 ftp://$TESTSERVER.fnal.gov/ > /dev/null 2>&1
if [ $? -eq 0 ] ; then
if [ $DEBUG -eq 0 ] ; then
echo " Server $TESTSERVER alive and ftpable"
fi
return 0
fi
if [ $DEBUG -eq 0 ] ; then
echo " Server $TESTSERVER not responding"
fi
return 1
}
if [ -f /var/lock/subsys/yum ]; then
if [ $DEBUG -eq 0 ] ; then
echo "Yum crontab starting"
fi
#****************************
#VARIABLES
#****************************
TEMPFILE="/tmp/yum.temp"
TEMPCONFIGFILE="/tmp/yum.temp.config"
TEMPMAILFILE="/tmp/yum.temp.mail"
WORKGROUP="$(cat /etc/workgroup)"
RELEASE="$(cat /etc/fermi-release | cut -d' ' -f4 | tr -d .)"
TODAY="$(date +%D)"
CHANGE=0
#****************************
#Figure out which server to use
#****************************
if [ $DEBUG -eq 0 ] ; then
echo " Finding a random, alive server"
fi
#pick the server randomly
let SERVERNUM=$RANDOM%2
if [ $SERVERNUM -eq 0 ] ; then
SERVER="linux21"
# SERVER="linux"
else
SERVER="yort"
# SERVER="linux1"
fi
#check to see if we can access that server
ping_server $SERVER
#if we can't access the server, change servers
if [ $? -eq 1 ] ; then
if [ $SERVERNUM -eq 0 ] ; then
SERVER="yort"
# SERVER="linux1"
else
SERVER="linux21"
# SERVER="linux"
fi
#check to see how these servers work
ping_server $SERVER
#we couldn't access any servers, so fail this
if [ $? -eq 1 ] ; then
echo "Could not access any distribution servers"
exit 2
fi
fi
if [ $DEBUG -eq 0 ] ; then
echo " Using $SERVER as ftp server"
fi
#****************************
#Setup
#****************************
rm -f $TEMPMAILFILE
rm -f $TEMPCONFIGFILE
rm -f $TEMPFILE
#****************************
#Updates Update
#****************************
if [ $DEBUG -eq 0 ] ; then
echo " Starting Yum for Updates"
echo " Creating Config File"
fi
rm -f $TEMPCONFIGFILE
echo "[main]" > $TEMPCONFIGFILE
echo "" >> $TEMPCONFIGFILE
echo "[updates]" >> $TEMPCONFIGFILE
echo "name=$RELEASE updates" >> $TEMPCONFIGFILE
echo "baseurl=ftp://$SERVER.fnal.gov/linux/$RELEASE/i386/updates/RedHat/RPMS/"; >> $TEMPCONFIGFILE
if [ $DEBUG -eq 0 ] ; then
echo "vvvvvvvvvvvvvvvvv"
cat $TEMPCONFIGFILE
echo "^^^^^^^^^^^^^^^^^"
echo " Starting Yum with command"
echo " /usr/sbin/yum -c $TEMPCONFIGFILE -e 0 -d 1 -y update"
fi
/usr/sbin/yum -c $TEMPCONFIGFILE -e 0 -d 1 -y update > $TEMPFILE 2>&1
if [ -s $TEMPFILE ] ; then
if [ $DEBUG -eq 0 ] ; then
echo " We had changes"
echo "vvvvvvvvvvvvvvvvv"
cat $TEMPFILE
echo "^^^^^^^^^^^^^^^^^"
fi
CHANGE=1
echo " --------------------" >> $TEMPMAILFILE
echo " YUM - Errata Updates" >> $TEMPMAILFILE
echo " --------------------" >> $TEMPMAILFILE
cat $TEMPFILE >> $TEMPMAILFILE
fi
#****************************
#Cleanup Updates
#****************************
if [ $DEBUG -eq 0 ] ; then
echo " Cleaning Up Updates"
fi
yum -e 0 -d 0 -c $TEMPCONFIGFILE clean all
#****************************
#Workgroup Update
#****************************
if [ $DEBUG -eq 0 ] ; then
echo " Starting Yum for Workgroup"
echo " Creating Config File"
fi
rm -f $TEMPCONFIGFILE
echo "[main]" > $TEMPCONFIGFILE
echo "" >> $TEMPCONFIGFILE
echo "[workgroup]" >> $TEMPCONFIGFILE
echo "name=$RELEASE $WORKGROUP workgroup" >> $TEMPCONFIGFILE
echo "baseurl=ftp://$SERVER.fnal.gov/linux/$RELEASE/i386/Fermi/workgroups/$WORKGROUP/RPMS/"; >> $TEMPCONFIGFILE
if [ $DEBUG -eq 0 ] ; then
echo "vvvvvvvvvvvvvvvvv"
cat $TEMPCONFIGFILE
echo "^^^^^^^^^^^^^^^^^"
echo " Starting Yum with command"
echo " /usr/sbin/yum -c $TEMPCONFIGFILE -e 0 -d 1 -y install \'*\'"
fi
/usr/sbin/yum -c $TEMPCONFIGFILE -e 0 -d 1 -y install '*' > $TEMPFILE 2>&1
if [ -s $TEMPFILE ] ; then
if [ $DEBUG -eq 0 ] ; then
echo " We had changes"
echo "vvvvvvvvvvvvvvvvv"
cat $TEMPFILE
echo "^^^^^^^^^^^^^^^^^"
fi
CHANGE=1
echo " -----------------------" >> $TEMPMAILFILE
echo " YUM - Workgroup Updates" >> $TEMPMAILFILE
echo " -----------------------" >> $TEMPMAILFILE
cat $TEMPFILE >> $TEMPMAILFILE
fi
#****************************
#Cleanup Workgroups
#****************************
if [ $DEBUG -eq 0 ] ; then
echo " Cleaning Up Workgoups"
fi
yum -e 0 -d 0 -c $TEMPCONFIGFILE clean all
#****************************
#Send Mail If Needed
#****************************
if [ $CHANGE -eq 1 ] ; then
if [ $DEBUG -eq 0 ] ; then
echo " Mail Needs To Be Sent"
echo " /bin/mail -s \"YUM: $TODAY\" $MAILLIST "
fi
/bin/mail -s "YUM: $TODAY" $MAILLIST < $TEMPMAILFILE
fi
#****************************
#Cleanup
#****************************
if [ $DEBUG -eq 0 ] ; then
echo " Cleaning Up Generic"
fi
yum -e 0 -d 0 clean all
rm -f $TEMPMAILFILE
rm -f $TEMPCONFIGFILE
rm -f $TEMPFILE
if [ $DEBUG -eq 0 ] ; then
echo "Yum Cron Exiting succesfully"
fi
else
if [ $DEBUG -eq 0 ] ; then
echo "Yum cron not turned on. Exiting"
fi
exit 1
fi
exit 0
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