Using CRIU to test OpenLiberty based applications

• Install CRIU:
  • On ubuntu sudo apt install criu
  • On rhel sudo yum install criu
• Download Java 8 Extract it and set JAVA_HOME env variable.
• Download OpenLiberty
• Clone this repository

In the following steps it is assumed that this repository is cloned at /opt/criu-ol.

Please change the location according to your setup.

Make sure following steps are run as root user.

• create a directory where the app would be placed:

  # mkdir /opt/app/pingperf
  # cd /opt/app/pingperf
  

• extract the downloaded openliberty zip here:

  # unzip -q <path to openliberty zip>

• create server

  # ./wlp/bin/server create defaultServer

• copy app files from the cloned repo to /opt/criu-ol/pingperf/

  # cp /opt/criu-ol/pingperf/pingperf.war ./wlp/usr/servers/defaultServer/apps
  # cp /opt/criu-ol/pingperf/jvm.options ./wlp/usr/servers/defaultServer
  # cp /opt/criu-ol/pingperf/server.xml ./wlp/usr/servers/defaultServer
  

• Go to top directory of the cloned repo:

  # cd /opt/criu-ol

• If you have installed the app at different location than /opt/app/pingperf then adjust the variable SERVER_INSTALL_DIR in pingperf_test.sh accordingly.

  Now run the script as:

  # ./pingperf_test.sh <batches> <iterations>

  eg # ./pingperf_test.sh 5 8 would run 5 batches with 8 iterations in each batch.

  If all goes fine, a summary would be displayed at the end of the run.

• create a directory where the app would be placed:

  # mkdir /opt/app/acmeair
  # cd /opt/app/acmeair
  

• extract the downloaded openliberty zip here:

  # unzip -q <path to openliberty zip>

• create server

  # ./wlp/bin/server create defaultServer

• copy app files from the cloned repo to /opt/criu-ol/acmeair/

  # cp /opt/criu-ol/acmeair/acmeair-webapp-2.0.0-SNAPSHOT.war ./wlp/usr/servers/defaultServer/apps
  # cp /opt/criu-ol/acmeair/mongo.properties ./wlp/usr/servers/defaultServer
  # cp /opt/criu-ol/acmeair/server.xml ./wlp/usr/servers/defaultServer
  

• create mongdb docker image using the script in the cloned repo

  # cd /opt/criu-ol/acmeair
  # ./build_mongo.sh
  

• Go to top directory of the cloned repo:

  # cd /opt/criu-ol

• If you have installed the app at different location than /opt/app/acmeair then adjust the variable SERVER_INSTALL_DIR in acmeair_test.sh accordingly.

  Now run the script as:

  # ./acmeair_test.sh <batches> <iterations>

  eg: # ./acmeair_test.sh 5 8 would run 5 batches with 8 iterations in each batch.

  If all goes fine, summary would be displayed at the end of the run.

• create a directory where the app would be placed:

  # mkdir /opt/app/daytrader7
  # cd /opt/app/daytrader7
  

• extract the downloaded openliberty zip here:

  # unzip -q <path to openliberty zip>

• create server

  # ./wlp/bin/server create defaultServer

• copy app files from the cloned repo to /opt/criu-ol/daytrader7/

  # cp -r /opt/criu-ol/daytrader7/shared ./wlp/usr/
  # cp -r /opt/criu-ol/daytrader7/servers/defaultServer ./wlp/usr/servers
  

• Go to top directory of the cloned repo:

  # cd /opt/criu-ol

• If you have installed the app at different location than /opt/app/daytrader7 then adjust the variable SERVER_INSTALL_DIR in daytrader7_test.sh accordingly.

  Now run the script as:

  # ./daytrader7_test.sh <batches> <iterations>

  eg # ./daytrader7_test.sh 5 8 would run 5 batches with 8 iterations in each batch.

  If all goes fine, a summary would be displayed at the end of the run.