NAME

       lava-coordinator - manage multinode communications

SUMMARY

       lava-coordinator  is  a  daemon  to  manage Multi-Node communications between LAVA devices
       under test.

OPTIONS

       --logfile=LOGFILE
              Overrides the default log file location of /var/log/lava-coordinator.log

       --loglevel=LOGLEVEL
              Overrides the default log level of INFO. Available options, in increasing order  of
              verbosity, are: ERROR, WARNING, INFO, DEBUG.

       -h; --help
              Show summary of options.

FILES

       /etc/lava-coordinator/lava-coordinator.conf
              The  system-wide  configuration  file to control the behaviour of DHPACKAGE. A LAVA
              NodeDispatcher installed on the same machine as the coordinator will use  the  same
              file. NodeDispatchers on remote machines need their own copy of this file, modified
              so that the coordinator_hostname field is the hostname or IP address of the machine
              running the coordinator.

LAVA LAB SETUP

       The  LAVA  Coordinator  needs  to  be  in  lock-step  with compatible versions of the LAVA
       NodeDispatcher (part of lava-dispatcher / lava-server) but the coordinator is a  singleton
       and there can be multiple dispatchers, none of which need to be on the same machine as the
       coordinator.

       Additionally, when a dispatcher is installed on a machine other than the  machine  running
       the  coordinator,  a  copy  of  the  LAVA  Coordinator conffile needs to be copied to that
       machine and modified to indicate the hostname or IP address of the  LAVA  Coordinator  for
       that dispatcher. Typically, this can be done with tools like salt, puppet, chef etc.

       Therefore,  lava-coordinator  does  not  depend  on  the rest of LAVA and the setup of the
       coordinator is at the discretion of the LAVA lab administrator. As long as  there  is  one
       Coordinator  and  all  dispatchers have a working address for a coordinator, all should be
       well.

       If a lab contains more than one Coordinator, it is recommended that each coordinator  uses
       a  different port. This is mandatory if more than one coordinator is installed on a single
       machine.

       LAVA Coordinator is lightweight and has minimal dependencies,  installing  on  virtualised
       hardware is not expected to be a problem.

AUTHOR

       Linaro Validation Team

COPYRIGHT

       2010-2021, Linaro Limited