install/installer/trafodion_uninstaller

#!/bin/bash
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function print_usage {
cat << EOF
This script will uninstall Trafodion completely, including the Trafodion userid
and its $HOME_DIR/$TRAF_USER directory. This must be run from a userid with 
sudo access.

Usage: $(basename $0) [options]

Options:
    --help                  Print this message and exit.

EOF
}

#=========================================
#source trafodion_config file 

TRAF_CONFIG=/etc/trafodion/trafodion_config
if [[ ! -f $TRAF_CONFIG ]]; then
   echo "***ERROR: $TRAF_CONFIG file does not exist" 
   echo "***ERROR: Uninstall by deleting Trafodion user id OR all Trafodion files and processes."
   exit -1 
else
   source $TRAF_CONFIG
fi
#=========================================
# define defaults
TRAF_GROUP="trafodion"
#HBASE_TRX="hbase-trx*"

UNINSTALL_ALL="N"
UNINSTALL_DIR=""

# Parse input parameters
while [[ $# -gt 0 ]]; do
    case "$1" in
        --help)
            print_usage
            exit -1
            ;;
        *)
            echo "***ERROR: unknown parameter '$1'"
            print_usage
            exit -1
    esac
    shift
done

#=========================================
#Confirmation 
echo -n "Do you want to uninstall Trafodion (Everything will be removed)? (Y/N) "
read v

if [[ $v != "Y" ]] && [[ $v != "y" ]]; then
  echo "***INFO: Exiting..."
  exit
fi

#=========================================
#Create logs directory and logfile name
timestamp=$(date +%F-%H-%M-%S)
logsdir="/var/log/trafodion"
logfile="$logsdir/uninstall_$timestamp.log"

#Check sudo access which is required for "--all" option
sudo echo "***INFO: testing sudo access"
if [ $? -ne 0 ]; then
   echo "***ERROR: trafodion_uninstaller requires sudo access."
   exit -1
fi

echo "***INFO: NOTE, rpms that were installed will not be removed."

#Handle removing all of Trafodion
echo "***INFO: stopping Trafodion instance"
sudo su $TRAF_USER --login --command "sqstop"
sudo su $TRAF_USER --login --command "ckillall"
sudo su $TRAF_USER --login --command "vncserver -kill :1"

# remove security stuff
if [[ "$SECURE_HADOOP" == "Y" ]]; then
   echo "***INFO: Removing $TRAF_USER ID from Kerberos cache"
   if [ $all_node_count -eq 1 ]; then
      sudo su $TRAF_USER --login --command "kdestroy -q"
   else
      $TRAF_PDSH "sudo su $TRAF_USER --login --command \"kdestroy -q\""
   fi 

   echo "***INFO: Stopping Kerberos ticket monitoring process"
   if [ $all_node_count -eq 1 ]; then
      sudo su $TRAF_USER --login --command "$TRAF_HOME/sql/scripts/krb5service stop 2>/dev/null"
   else
      $TRAF_PDSH "sudo su $TRAF_USER --login --command \"$TRAF_HOME/sql/scripts/krb5service stop 2>/dev/null\""
   fi 
fi
   
# Please don't start up another shell $TRAF_USER process after this point,
# the login process will create a new TGT in cache and start the ticket monitor

echo "***INFO: restoring linux system files that were changed"
echo "***INFO: removing $HBASE_TRX from Hadoop directories"
if [ $all_node_count -eq 1 ]; then
   sudo rm /etc/security/limits.d/trafodion.conf 2>/dev/null
   sudo rm /usr/share/cmf/lib/plugins/$HBASE_TRX 2>/dev/null
   #sudo rm /usr/lib/hbase/lib/$HBASE_TRX 2>/dev/null
   #sudo rm /usr/hdp/current/hbase-regionserver/lib/$HBASE_TRX 2>/dev/null
else
   $TRAF_PDSH "sudo rm /etc/security/limits.d/trafodion.conf 2>/dev/null"
   $TRAF_PDSH "sudo rm /usr/share/cmf/lib/plugins/$HBASE_TRX 2>/dev/null"
   #$TRAF_PDSH "sudo rm /usr/lib/hbase/lib/$HBASE_TRX 2>/dev/null"
   #$TRAF_PDSH "sudo rm /usr/hdp/current/hbase-regionserver/lib/$HBASE_TRX 2>/dev/null" 
fi

echo "***INFO remove the Trafodion userid and group"
$TRAF_PDSH sudo rm -rf $TRAF_WORKDIR/$TRAF_USER
$TRAF_PDSH sudo rm -rf $LOCAL_WORKDIR/$TRAF_USER
$TRAF_PDSH sudo /usr/sbin/userdel --force --remove $TRAF_USER
$TRAF_PDSH sudo /usr/sbin/groupdel $TRAF_GROUP 2>/dev/null

echo "***INFO: removing all files from $TRAF_HOME"
$TRAF_PDSH sudo rm -rf $TRAF_HOME
 
echo "***INFO: removing all files from /usr/lib/trafodion and /var/log/trafodion"
$TRAF_PDSH sudo rm -rf /usr/lib/trafodion*
$TRAF_PDSH sudo rm -rf /var/log/trafodion*

echo "***INFO: removing all files from /etc/trafodion"
$TRAF_PDSH sudo rm -rf /etc/trafodion*
$TRAF_PDSH sudo rm -rf $LOCAL_WORKDIR/trafodion_config

echo "***INFO: Trafodion uninstall complete."