OpenLava as DCOS service for Apache Mesos
Note: this is very much work in progress! Feel free to help :-)
to run this stuff:
$ docker-compose -p tmetsch up
This will start a mesos-master, mesos-agents and the OpenLava master framework. It is a "simulated" distributed environment for testing only atm. The idea for integrating Openlava on Mesos is the following:
As long as the queues are empty reject offers from mesos OR if a queues has pending jobs offers are accepted and the openlava services are started as a task. This is done with the help of a simple PID controller.
Tasks are completed in case they are idle for a while.
Openlava itself could make use of firing up docker containers to run the actual workload.
There are several docker images being used here:
- the Apache Mesos & Marathon images from this repo.
- based on the previous one an image is defined which combines OpenLava & the OpenLava framework (this could be split into two to be more lightweight)
To submit jobs:
$ docker exec -u openlava tmetsch_openlavamaster_1 \ /opt/openlava-2.2/bin/bsub -J "myArray[1-100]" /bin/sleep 3
To list jobs:
$ docker exec -u openlava tmetsch_openlavamaster_1 \ /opt/openlava-2.2/bin/bjobs
To watch the current hosts (Mesos Tasks) in the OpenLava cluster:
$ watch docker exec -u openlava tmetsch_openlavamaster_1 \ /opt/openlava-2.2/bin/bhosts
In the meantime feel free to see the openlava cluster shrink and grow based on demand :-)
OpenLava 2.2 currently requires this patch to assure only the offered CPUs are being used.