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RspRegistrar(1) 	     General Commands Manual		 RspRegistrar(1)

NAME
     rspregistrar -- RSerPool Pool Registrar (PR) Service

SYNOPSIS
     rspregistrar [-announcettl=TTL] [-asap=auto|address:port,address,...]
		  [-asapannounce=auto|address:port] [-autoclosetimeout=seconds]
		  [-endpointkeepalivetransmissioninterval=milliseconds]
		  [-endpointkeepalivetimeoutinterval=milliseconds]
		  [-maxbadpereports=reports] [-maxhresitems=items]
		  [-maxincrement=increment] [-minaddressscope=-
		  loopback|sitelocal|global] [-serverannouncecycle=milliseconds]
		  [-enrp=auto|address:port,address,...] [-enrpannounce=-
		  auto|address:port] [-maxelementsperhtrequest=items] [-mentor-
		  discoverytimeout=milliseconds] [-peer=address:port]
		  [-peerheartbeatcycle=milliseconds] [-peermaxtimelastheard=-
		  millisecond] [-peermaxtimenoresponse=milliseconds] [-takeover-
		  expiryinterval=milliseconds] [-cspinterval=milliseconds]
		  [-cspserver=address:port] [-logcolor=on|off] [-logappend=-
		  filename] [-logfile=filename] [-loglevel=0-9]

DESCRIPTION
     rspregistrar  provides  a	registrar  service  for  Reliable Server Pooling
     (RSerPool) pool elements (PEs) and pool users (PUs). PRs  of  an  operation
     scope  synchronize their view of the handlespace using the Endpoint haNdle-
     space Redundancy Protocol (ENRP), transported via SCTP. An operation  scope
     has  a  limited range, e.g. an organization or only a building. In particu-
     lar, it is restricted to a single administrative domain -	in  contrast  to
     GRID  computing  - in order to keep the management complexity at a minimum.
     Nevertheless, PEs may be distributed globally for their service to  survive
     localized disasters.

     PEs  choose  an arbitrary PR of the operation scope to register into a pool
     by using the Aggregate Server Access Protocol (ASAP), again transported via
     SCTP.  Upon registration at a PR, the chosen PR becomes the Home-PR  (PR-H)
     of  the  newly registered PE. A PR-H is responsible for monitoring its PEs'
     availability by keep-alive messages (to be acknowledged by the PE within  a
     given  timeout)  and  propagates the information about its PEs to the other
     PRs of the operation scope via ENRP updates.

     In order to access the service of a pool given by its PH, a PU  requests  a
     PE  selection from an arbitrary PR of the operation scope, using the Aggre-
     gate Server Access Protocol (ASAP), transported via SCTP.	The  PR  selects
     the  requested  list of PE identities by applying a pool-specific selection
     rule, called pool policy.

     In order to allow for automatic configuration, a PR can  send  out  regular
     announces via an ASAP and ENRP multicast address. PEs and PUs can listen to
     this address to learn the list of currently available PRs.

ARGUMENTS
     The following options are available:

     -quiet  Do not print startup and shutdown messages.

     -announcettl=TTL
	     Sets  the TTL for outgoing ASAP Announce/ENRP Presence messages via
	     multicast.

     Logging Parameters:
	     It is recommended to use at least a value of 2 to see possibly  im-
	     portant error messages and warnings.

	     -logcolor=on|off
		     Turns ANSI colorization of the logging output on or off.

	     -logappend=filename
		     Write  logging output to a file (default is stdout); output
		     will be appended to given file.

	     -logfile=filename
		     Write logging output to a file (default is  stdout);  given
		     file will be overwritten.

	     -loglevel=0-9
		     Sets  the	logging  verbosity from 0 (none) to 9 (very ver-
		     bose).

     Component Status Protocol (CSP) Parameters:

	     -cspinterval=milliseconds
		     Sets the interval for the CSP status updates  in  millisec-
		     onds.

	     -cspserver=address:port
		     Sets the CSP monitor server's address and port.

     Aggregate Server Access Protocol (ASAP) Parameters:

	     -autoclosetimeout=seconds
		     Sets the SCTP autoclose timeout for idle ASAP associations.

	     -asap=auto|address:port,address,...
		     Sets the ASAP endpoint address(es). Use "auto" to automati-
		     cally set it (default).

	     -asapannounce=auto|address:port
		     Sets  the	multicast  address and UDP port to send the ASAP
		     Announces to. Use "auto" to automatically set it (default).
		     Examples:
		     -asapannounce=auto
		     -asapannounce=239.0.0.1:3863

	     -endpointkeepalivetransmissioninterval=milliseconds
		     Sets the ASAP Endpoint Keep Alive interval.

	     -endpointkeepalivetimeoutinterval=milliseconds
		     Sets the ASAP Endpoint Keep Alive timeout.

	     -maxbadpereports=reports
		     Sets the maximum number of ASAP  Endpoint	Unreachable  re-
		     ports before removing a PE.

	     -maxincrement=increment
		     Sets the MaxIncrement constant. Handle with care!

	     -maxhresitems=items
		     Sets the MaxHResItems constant.

	     -minaddressscope=loopback|sitelocal|global
		     Sets  the	minimum  address scope acceptable for registered
		     PEs:
		     loopback: Loopback address (only valid on the same node!)
		     site-local: Site-local addresses (e.g. 192.168.1.1, etc.)
		     global: Global addresses

	     -serverannouncecycle=milliseconds
		     Sets the ASAP Announce interval.

     Endpoint Handlespace Redundancy Protocol (ENRP) Parameters:

	     -enrp=auto|address:port,address,...
		     Sets the ENRP endpoint address(es). Use "auto" to automati-
		     cally set it (default). Examples:
		     -enrp=auto
		     -enrp=1.2.3.4:9901
		     -enrp=1.2.3.4:9901,[2000::1:2:3],9.8.7.6

	     -enrpannounce=auto|address:port
		     Sets the multicast address and UDP port to  send  the  ENRP
		     Announces to. Use "auto" to automatically set it (default).
		     Examples:
		     -enrpannounce=auto
		     -enrpannounce=239.0.0.1:9901

	     -maxelementsperhtrequest=items
		     Sets  the maximum number of items per ENRP Handle Table Re-
		     sponse.

	     -mentordiscoverytimeout=milliseconds
		     Sets the mentor PR discovery timeout in milliseconds.

	     -peer=address:port
		     Adds a static PR entry into the Peer List. It  is	possible
		     to add multiple entries.

	     -peerheartbeatcycle=milliseconds
		     Sets the ENRP peer heartbeat interval.

	     -peermaxtimelastheard=milliseconds
		     Sets the ENRP peer max time last heard.

	     -peermaxtimenoresponse=milliseconds
		     Sets the ENRP maximum time without response.

	     -takeoverexpiryinterval=milliseconds
		     Sets the ENRP takeover timeout.

ENVIRONMENT
     rspregistrar  uses the environment variables CSP_SERVER and CSP_INTERVAL to
     define a CSP server to send reports to in the specified interval.

DIAGNOSTICS
     If loglevel>0, log messages will be printed to stdout or into  a  specified
     log file.

SEE ALSO
     For a detailed introduction to RSerPool, see:
     https://duepublico.uni-duisburg-essen.de/servlets/DerivateServlet/Deri-
     vate-16326/Dre2006_final.pdf

     Thomas Dreibholz's RSerPool Page:
     https://www.nntb.no/~dreibh/rserpool/

RSerPool Registrar		  May 12, 2025			 RspRegistrar(1)

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