FFF configuration meta rpm

[smorovic]

To automatically configure DAQ cluster, a separate "meta" rpm package is created. it depends on hltd and elasticsearch, and will trigger reconfiguration when those are updated.

rpm build and integrated configuration scripts are presently found in hltd git. Versioning of the rpm follows the hltd versioning schema.
Script contained in rpm can detect whether it is executed on BU or FU, and on which cluster (daqval, prod) - presently this is based on hostname naming conventions. On FUs, the script will connect to HWCfg DB to retrieve DNS name of the BU data interface for mounting NFS ramdisk/output area. This is currently only supported on daqval until production HWCfg DB is ready.

The package will also set up elasticsearch parameters accordingly: appliance cluster setup where BU is master without data, and slaves with data on FUs. Unicast is used for discovery between master and slaves in the appliance.

The full cluster should be properly configured without manual intervention using the package. For this, requirement is that, when script is running on FU, BU machine must be booted. Also, the equipment set with proper information must be present in database or configuration will fail.

In addition, package includes the init script which will run the configuration script at each boot ('refresh'), prior to starting hltd and elasticsearch services.

Package is by running scripts/metarpm.sh