[root@p3plsysops001 ~]# cat /usr/local/sbin/gdpatch.sh
#!/bin/bash

#Enable compatability mode for bash 3.2 regex matching

shopt -s compat31

#Include conf files with presidence on local directories conf file.

. /opt/gdpatch/gdpatch.conf

#Take input variables

spacewalkgroup=$1
patchtime=$2
reboottime=$3

if [ $# -lt 1 ]
        then
        echo "Usage: `basename $0` spacewalkgroup [patchtime] [reboottime] [emai                                                                                                                                                  llist]"
        echo "EX: myspacewalkgroup 20130131T22:00:00 20130131T23:55:00 '\"root\"                                                                                                                                                   <root@localhost>'"
        exit 1
fi

if [ -z $2 ]
        then
        echo "No patchtime provided, patching will be scheduled to happen now"
        patchtime="`date +%Y%m%dT%k:%M:%S`"
fi

if [ -z $3 ]
        then
        echo "No reboot provided, restarts will be scheduled to happen now"
        reboottime="`date +%Y%m%dT%k:%M:%S`"
fi

if [ ! -z "$4" ]
        then
        echo "using user provided email list:"
        echo "$4"
        EMAILLIST=$4
else
        echo "No emaillist provided default email list in confs will be used"
fi


if [[ $patchtime =~ ^[0-9]\{8\}T[0-9]\{2\}:[0-9]\{2\}:[0-9]\{2\} ]]
        then
        echo ""
else
        echo "patchtime format does not match YYYYMMDDTHH:MM:SS EX: `date +%Y%m%                                                                                                                                                  dT%k:%M:%S`"
        exit 1
fi

if [[ $reboottime =~ ^[0-9]\{8\}T[0-9]\{2\}:[0-9]\{2\}:[0-9]\{2\} ]]
        then
        echo ""
else
        echo "reboottime format does not match YYYYMMDDTHH:MM:SS EX: `date +%Y%m                                                                                                                                                  %dT%k:%M:%S`"
        exit 1
fi


echo "Script running for $spacewalkgroup"

encryptedpassword=`j-encrypt "$PASSWORD"`

#setup functions used for snapshots, sending email, and patching.

preppatchingemail (){

spacewalkgroup=$1
EMAILLIST=$2
patchtime=$3

#Make a new copy of the email template

cp /opt/gdpatch/email-body-template.txt /opt/gdpatch/$$.modified-email-body.txt

#Add date, time, and email list to the email file.

sed -i "s/\--ENVIRONMENT--/$spacewalkgroup/" /opt/gdpatch/$$.modified-email-body                                                                                                                                                  .txt
sed  -i "s/To: .*/To: $EMAILLIST/" /opt/gdpatch/$$.modified-email-body.txt
sed -i "s/\$date/$patchtime/" /opt/gdpatch/$$.modified-email-body.txt

}

removesnapshotsfor (){

spacewalkgroup="$1"
VSPHEREHOST="$2"
username="$3"
encryptedpassword="$4"

echo "starting snapshot removal."

processes=`pgrep "snapshotmanager" | wc -l`
for host in `swutil systemgroup-list -g $spacewalkgroup --raw | awk -F '.' '{pri                                                                                                                                                  nt $1}'`
        do
        while [ $processes -gt 4 ]
                do
                echo "number of current jobs is $processes sleeping for 3 second                                                                                                                                                  s"
                sleep 3
                processes=`pgrep "snapshotmanager" | wc -l`
        done
        echo "Removing last patching snapshot for: $host"
        nice -n 15 snapshotmanager.pl --url "$VSPHEREHOST" --username "$username                                                                                                                                                  " --password "$encryptedpassword" --operation remove --vmname "$host" --snapshot                                                                                                                                                  name pre-"$spacewalkgroup"-patching-snapshot --children 1 > /dev/null 2>&1 &
    sleep 1
    processes=`pgrep "snapshotmanager" | wc -l`
done
}
waitforsnapshotmanager (){

processes=`pgrep "snapshotmanager" | wc -l`
while [ $processes -gt 0 ]
    do
    echo "waiting for all snapshotmanager jobs to complete before continuing"
    sleep 5
    processes=`pgrep "snapshotmanager" | wc -l`
done

}
createsnapshotsfor (){

spacewalkgroup="$1"
VSPHEREHOST="$2"
username="$3"
encryptedpassword="$4"

processes=`pgrep "snapshotmanager" | wc -l`
for host in `swutil systemgroup-list -g $spacewalkgroup --raw | awk -F '.' '{pri                                                                                                                                                  nt $1}'`
        do
        while [ $processes -gt 4 ]
                do
                echo "number of current jobs is $processes sleeping for 3 second                                                                                                                                                  s"
                sleep 3
                processes=`pgrep "snapshotmanager" | wc -l`
        done
        echo "Creating new patching snapshot for: $host"
        nice -n 15 snapshotmanager.pl --url "$VSPHEREHOST" --username "$username                                                                                                                                                  " --password "$encryptedpassword" --operation create --vmname "$host" --snapshot                                                                                                                                                  name pre-"$spacewalkgroup"-patching-snapshot > /dev/null 2>&1 &
        echo "$host <br>" >> /opt/gdpatch/$$.hosts.txt
        sleep 1
        processes=`pgrep "snapshotmanager" | wc -l`
done

}
sendpatchingnoticeemail (){

echo "<br></body></html>" >> /opt/gdpatch/$$.hosts.txt
cat /opt/gdpatch/$$.modified-email-body.txt /opt/gdpatch/$$.hosts.txt /opt/gdpat                                                                                                                                                  ch/sysopsimage.txt > /opt/gdpatch/$$.email.txt
/usr/sbin/sendmail -i -t < /opt/gdpatch/$$.email.txt
echo "Email sent"
rm -f /opt/gdpatch/$$.email.txt
rm -f /opt/gdpatch/$$.modified-email-body.txt
rm -f /opt/gdpatch/$$.hosts.txt

}

schedulepatching (){

spacewalkgroup=$1
patchtime=$2
swutil patch-server -g "$spacewalkgroup" -D "$patchtime"
}

schedulereboots (){

spacewalkgroup=$1
reboottime=$2
swutil reboot-server -g $spacewalkgroup -D "$reboottime"
echo $reboottime
}

sendpatchingcompletionemail (){

EMAILLIST=$1

reboottime=$2

spacewalkgroup=$3

mydir=`pwd`

# Use this magic to schedule with spacewalk.

sed "s/To: .*/To: $EMAILLIST/" /opt/gdpatch/patching-completion-email-template.t                                                                                                                                                  xt | sed "s/\--ENVIRONMENT--/$spacewalkgroup/" > /opt/gdpatch/$$.patching-comple                                                                                                                                                  tion-email.txt

emailcontents=`cat /opt/gdpatch/$$.patching-completion-email.txt`

echo -e "#! /bin/bash \n /usr/sbin/sendmail -i -t << ENDOFMYFILE\n$emailcontents                                                                                                                                                  \nENDOFMYFILE" > /opt/gdpatch/$$.patching-completion-email.sh

swutil run-script -s `hostname` -f /opt/gdpatch/$$.patching-completion-email.sh                                                                                                                                                   -D $reboottime

rm -f /opt/gdpatch/$$.patching-completion-email.txt
rm -f /opt/gdpatch/$$.patching-completion-email.sh

}

preppatchingemail "$spacewalkgroup" "$EMAILLIST" "$patchtime"

removesnapshotsfor "$spacewalkgroup" "$VSPHEREHOST" "$USERNAME" "$encryptedpassw                                                                                                                                                  ord"

waitforsnapshotmanager

createsnapshotsfor "$spacewalkgroup" "$VSPHEREHOST" "$USERNAME" "$encryptedpassw                                                                                                                                                  ord"

waitforsnapshotmanager

sendpatchingnoticeemail

echo "$spacewalkgroup"
echo "$patchtime"

schedulepatching "$spacewalkgroup" "$patchtime"

schedulereboots "$spacewalkgroup" "$reboottime"

sendpatchingcompletionemail "$EMAILLIST" "$reboottime" "$spacewalkgroup"

[root@p3plsysops001 ~]#