install.09102019.patch

--- cryosparc2_master/install.sh	2019-06-25 20:37:49.000000000 -0500
+++ updated_install.sh	2019-09-09 19:04:18.604949000 -0500
@@ -174,9 +174,22 @@
 #################################################
 # CHECK HOSTNAME
 #################################################
-if ! ping -c 4 "$MASTER_HOSTNAME" > /dev/null ; then
-    echo "Error: Could not ping $MASTER_HOSTNAME"
-    exit 1
+#if ! ping -c 4 "$MASTER_HOSTNAME" > /dev/null ; then
+#    echo "Error: Could not ping $MASTER_HOSTNAME"
+#    exit 1
+#fi
+
+res=$(ssh $MASTER_HOSTNAME -C "hostname")
+if [[ $? -eq 2 ]]
+then
+	echo "Error: Cannot ssh into master node $MASTER_HOSTNAME, aborting..."
+	exit 1
+fi
+
+if [[ ! $res == *"$MASTER_HOSTNAME"* ]];
+then
+	echo "Error: master hostname does not match real hostname $res. "
+	exit 1
 fi
 
 ################################################
@@ -387,4 +400,4 @@
     echo " master node."
     echo ""
     echo "******************************************************************"
-fi
\ No newline at end of file
+fi