user-data for AWS VertSys examples

VerteilteSysteme-Examples/src/verteiltesysteme/aws/user-data.txt

@@ -1,19 +1,24 @@
 #!/bin/bash
 
+# Config
 SCRIPT_ROOT_PATH="/tmp/init-script"
 VERTSYS_PATH="$SCRIPT_ROOT_PATH/verteilte-systeme-bsc-ai-examples/VerteilteSysteme-Examples/build/"
 #JARS = "TCPServer.jar TCPServerMulti.jar UDPServer.jar UDPServerMulti.jar UDPTimeCounterServer.jar TCPPerfServer.jar"
 JARS="TCPServer.jar TCPPerfServer.jar UDPServer.jar UDPTimeCounterServer.jar"
 REPO="https://gogs.informatik.hs-fulda.de/srieger/verteilte-systeme-bsc-ai-examples.git"
 
+# Create path to run the script and store the output
 mkdir $SCRIPT_ROOT_PATH
 cd $SCRIPT_ROOT_PATH
+# fetch user-data (should be the content of this script itself ;)) to check and run it later again
 wget http://169.254.169.254/latest/user-data
 chmod +x user-data
 wget http://169.254.169.254/latest/meta-data/placement/availability-zone
-echo "PS1='[\u@\h@`cat /tmp/init-script/availability-zone` \W]$ '" >>/root/.bashrc
-echo "PS1='[\u@\h@`cat /tmp/init-script/availability-zone` \W]$ '" >>/home/ec2-user/.bashrc
+# setting console prompt to include location (availability zone and region in AWS)
+echo "PS1='[\u@\h@\e[32m`cat /tmp/init-script/availability-zone`\e[32m \W]$ '" >>/root/.bashrc
+echo "PS1='[\u@\h@\e[32m`cat /tmp/init-script/availability-zone`\e[39m \W]$ '" >>/home/ec2-user/.bashrc
 
+# wait for internet connection, should not be necessary, but just in case ;)
 while ! ping -c 1 -W 1 8.8.8.8; do
     echo "Waiting for 8.8.8.8 - network interface might be down..."
     sleep 1
@@ -28,25 +33,27 @@ if [ ! -d $VERTSYS_PATH ]; then
   git clone $REPO
 fi
 
-# Example for path and contents:
-#
-# ./verteilte-systeme-bsc-ai-examples/VerteilteSysteme-Examples/build/
-#
-#build-server-jars.xml                TCPServerMulti.jar
-#RMIEchoServer.jar                    UDPServer.jar
-#RMIMandelbrotCalculationsServer.jar  UDPServerMulti.jar
-#TCPPerfServer.jar                    UDPTimeCounterServer.jar
-#TCPServer.jar
-
+# killall running screens if script is run again
 killall screen
+# start all jars
 echo "Starting JARS: ${JARS}..."
 for JAR in $JARS; do
   echo "Starting ${JAR}..."
   sudo screen -dmS $JAR -L java -jar $VERTSYS_PATH/$JAR
 done
 
-sleep 5
+sleep 1
 
 echo "Status:"
 sudo netstat -taupen | grep 36[0,1][0-9][0-9]
 sudo ps aux | grep java
+
+# Example for path and contents:
+#
+# ./verteilte-systeme-bsc-ai-examples/VerteilteSysteme-Examples/build/
+#
+#build-server-jars.xml                TCPServerMulti.jar
+#RMIEchoServer.jar                    UDPServer.jar
+#RMIMandelbrotCalculationsServer.jar  UDPServerMulti.jar
+#TCPPerfServer.jar                    UDPTimeCounterServer.jar
+#TCPServer.jar