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NAME

     rspserver — RSerPool Server (PE) for multiple example services

SYNOPSIS

     rspserver [-local=address:port,address,...] [-asapannounce=address:port]
               [-identifier=PE_identifier] [-policy=policy_specification]
               [-poolhandle=pool_handle] [-quiet] [-registrar=address:port]
               [-rereginterval=milliseconds] [-runtime=milliseconds] [-uptime=seconds]
               [-downtime=seconds] [-logcolor=on|off] [-logappend=filename] [-logfile=filename]
               [-loglevel=0-9] [-cspserver=address:port] [-cspinterval=milliseconds]
     rspserver [-calcapp] [-capcapacity=calculations_per_second]
               [-capcleanshutdownprobability=probability]
               [-capcookiemaxcalculations=calculations] [-capcookiemaxtime=seconds]
               [-capkeepalivetransmissioninterval=milliseconds]
               [-capkeepalivetimeoutinterval=milliseconds] [-capmaxjobs=max_jobs]
               [-capobject=name] [-capscalar=scalae_file] [-capvector=vector_file]
     rspserver [-chargen] [-chargenmaxthreads=threads]
     rspserver [-daytime]
     rspserver [-discard]
     rspserver [-echo]
     rspserver [-fractal] [-fgpcookiemaxpackets=messages] [-fgpcookiemaxtime=milliseconds]
               [-fgpfailureafter=messages] [-fgpmaxthreads=threads] [-fgptestmode]
               [-fgptransmittimeout=milliseconds]
     rspserver [-pingpong] [-pppfailureafter=messages] [-pppmaxthreads=threads]
     rspserver [-scripting] [-sskeyring=keyring] [-sstrustdb=trust_db]
               [-sscachedirectory=directory] [-sscachemaxentries=entries]
               [-sscachemaxsize=kibibytes] [-sskeepaliveinterval=milliseconds]
               [-sskeepalivetimeout=milliseconds] [-sskeeptempdirs] [-ssmaxthreads=threads]
               [-sstransmittimeout=milliseconds]

DESCRIPTION

     rspserver is an example Reliable Server Pooling (RSerPool) pool element (PE) that provides
     multiple services. Upon startup, one service has to be selected by the command-line
     parameters. To start multiple services, run multiple instances.  rspserver provides the
     following services:

     CalcApp
             Calculation application model for performance tests. See https://duepublico.uni-
             duisburg-essen.de/servlets/DerivateServlet/Derivate-16326/Dre2006_final.pdf for more
             information.

     CharGen
             Sending as much character data as possible.

     Daytime
             Sending back current time of day.

     Discard
             Discarding incoming data.

     Echo    Echoing back incoming data.

     Fractal
             Fractal generator with cookie-based failover.

     PingPong
             Simple request-response example using cookies for failover.

     Scripting
             Remote execution of scripts with upload/download of input/output data. Could for
             example be used for distributing simulation runs. Take care of security when using
             this service!

ARGUMENTS

     The following options are available:

     Common Pool Element Parameters:

             -local=address:port,address,...
                     Sets the local endpoint address(es).

             -asapannounce=address:port|auto|off
                     Sets the multicast address and port the ASAP instance listens for ASAP
                     Server Announces on.

             -identifier=PE_identifier
                     Sets a fixed PE identifier. Handle with care!

             -policy=policy_specification
                     Sets the pool policy and its parameters (default is Round Robin).  Supported
                     policy specifications:

                     RoundRobin (default policy)

                     WeightedRoundRobin:weight

                     Random

                     WeightedRandom:weight

                     LeastUsed

                     LeastUsedDegradation:increment

                     PriorityLeastUsed:increment

                     LeastUsedDPF:dpf_value

                     Priority:priority

                     ...

             -poolhandle=pool_handle
                     Sets the PH to a non-default value; otherwise, the default setting is the
                     service-specific default.

             -quiet  Do not print startup and shutdown messages.

             -rereginterval=milliseconds
                     Sets the PE's re-registration interval.

             -runtime=seconds
                     After the configured number of seconds, the service is shut down.  Floating-
                     point values (e.g. 30.125) are possible.

             -uptime=seconds
                     After negative exponential randomized uptime, the PE service goes down for a
                     configured downtime. After that, it comes up again. This option can be used
                     for testing the failure handling procedures.

             -downtime=seconds
                     After negative exponential randomized downtime, the PE service comes up
                     again. This option can be used for testing the failure handling procedures.

     Logging Parameters:

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

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

             -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 verbose).  It is
                     recommended to use at least a value of 2 to see possibly important error
                     messages and warnings.

     ASAP Protocol Parameters:

             -registrar=address:port
                     Adds a static PR entry into the Registrar Table.  It is possible to add
                     multiple entries.

             -registrarannouncetimeout=milliseconds
                     Sets the timeout for ASAP announces via multicast.

             -registrarconnecttimeout=milliseconds
                     Sets the timeout for ASAP connection establishment.

             -registrarconnectmaxtrials=trials
                     Sets the maximum number of ASAP connection establishment trials.

             -registrarrequesttimeout=milliseconds
                     Sets the timeout for ASAP requests.

             -registrarresponsetimeout=milliseconds
                     Sets the timeout for waiting to receive ASAP responses.

             -registrarrequestmaxtrials=trials
                     Sets the maximum number of ASAP request trials.

     Component Status Protocol (CSP) Parameters:

             -cspinterval=milliseconds
                     Sets the interval for the CSP status updates in milliseconds. By default,
                     the content of the environment variable CSP_INTERVAL is used. If not
                     defined, no CSP status reports will be sent.

             -cspserver=address:port
                     Sets the address of a CSP monitor server. By default, the content of the
                     environment variable CSP_SERVER is used. If not defined, no CSP status
                     reports will be sent.

     Service Parameters:

             -calcapp
                     Starts the CalcApp service.

                     -capcapacity=calculations_per_second
                             Sets the service capacity in calculations per second.

                     -capcleanshutdownprobability=probability
                             Sets the probability for sending state cookies to all sessions
                             before shutting down.

                     -capcookiemaxcalculations=calculations
                             Sets the cookie interval in calculations.

                     -capcookiemaxtime=seconds
                             Sets the cookie interval in seconds.

                     -capkeepalivetransmissioninterval=milliseconds
                             Sets the keep-alive transmission interval in milliseconds.

                     -capkeepalivetimeoutinterval=milliseconds
                             Sets the keep-alive timeout in milliseconds.

                     -capmaxjobs=max_jobs
                             Sets the an upper limit for the number of simultaneous CalcApp
                             requests.

                     -capobject=name
                             Sets the object name for scalar hierarchy.

                     -capscalar=scalar_file
                             Sets the name of vector scalar file.

                     -capvector=vector_file
                             Sets the name of vector output file.

             -chargen
                     Starts the CharGen service.

                     -chargenmaxthreads=threads
                             Sets an upper limit for the number of simultaneous CharGen sessions.

             -daytime
                     Starts the Daytime service.

             -discard
                     Starts the Discard service.

             -echo   Starts the Echo service.

             -fractal
                     Starts the Fractal Generator service.

                     -fgpcookiemaxpackets=messages
                             Send cookie after given number of Data messages

                     -fgpcookiemaxtime=milliseconds
                             Send cookie after given number of milliseconds.

                     -fgpfailureafter=messages
                             After the set number of data packets, the server will terminate the
                             connection in order to test failovers.

                     -fgpmaxthreads=threads
                             Sets an upper limit for the number of simultaneous Fractal Generator
                             sessions.

                     -fgptestmode
                             Generate simple test pattern instead of calculating a fractal
                             graphics (useful to conserve CPU power when debugging).

                     -fgptransmittimeout=milliseconds
                             Sets transmit timeout in milliseconds.

             -pingpong
                     Starts the PingPong service.

                     -pppfailureafter=messages
                             After the set number of messages, the server will terminate the
                             connection in order to test failovers.

                     -pppmaxthreads=threads
                             Sets an upper limit for the number of simultaneous PingPong
                             sessions.

             -scripting
                     Starts the Scripting service.

                     -sskeyring=keyring
                             The location of a GnuPG keyring to check the work packages and
                             environments against. If a keyring is specified, only files that
                             pass the validation are accepted.

                     -sscachedirectory=directory
                             Sets the environment cache directory.

                     -sscachemaxentries=entries
                             Sets the maximum number of environment cache entries.

                     -sscachemaxsize=kibibytes
                             Sets the maximum size of the environment cache in kibibytes.

                     -sskeepaliveinterval=milliseconds
                             Sets the keep-alive interval in milliseconds.

                     -sskeepalivetimeout=milliseconds
                             Sets the keep-alive timeout in milliseconds.

                     -sskeeptempdirs
                             Turns on keeping all temporary files for debugging. Handle with
                             care!

                     -ssmaxthreads=threads
                             Sets an upper limit for the number of simultaneous sessions.

                     -sstransmittimeout=milliseconds
                             Sets the transmission timeout in milliseconds.

ENVIRONMENT

     rspserver 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/Derivate-16326/Dre2006_final.pdf

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