Contrail analytics eating away all the RAM, no ram configuration specified

[Suresh]

Tried installing Contrail + Openstack from https://github.com/Juniper/contrail-ansible-deployer/wiki/Contrail-with-Kolla-Ocata. The document does not mention how much RAM the system should have either for Single node setup or for multinode setup. We tried installing with 32GB RAM but after sometime it failed. In fact the installation never succeeded as it was running out of RAM after certain point of time as the java apps are eating away all the memory. Which leads to hang the system. So we added JVM_EXTRA_OPTS: "-Xms1g -Xmx2g" option in the instance.yaml file then it got installed.

Shouldn't the java option be kept default in the basic instance.yaml file so that who ever is needed they can disable or can change the 1g & 2g to their suitable memory values. This issue needs to be taken seriously as every new guy, who comes and installs will waste time debugging this long.

Hosts: CentOS, Ubuntu
Openstack distribution: Ocata