LVS(8)                                                     LVS(8)

NAME

       fos  -  failover  services  daemon  to control the Red Hat
       clustering services.

SYNOPSIS

       fos  [-c   cfgfile|--configfile=cfgfile]   [-n|--nodaemon]
       [-t|--test-start]       [-v|--verbose]      [-f|--monitor]
       [-F|--active] [-?|--help] [--usage]

DESCRIPTION

       fos reads the failover services  section  in  the  cluster
       configuration  file  /etc/lvs.cf.  The program must be run
       with either "--monitor" or "--active" (or -f and -F) spec­
       ified.  If  "--monitor"  is used, the program starts nanny
       daemons to monitor IP services on a  partner  system.   If
       "--active"  is  specified,  the program starts the IP ser­
       vices on the local system by executing startup scripts. In
       both cases, a service failure or child daemon exiting will
       cause fos to terminate, which in turn  will  notify  pulse
       that  something failed and to initiate a cluster failover.

       fos is normally started by pulse although it can be run as
       a  command  line  tool.  Similarly, the configuration file
       that tells fos what to do is normally edited  by  piranha,
       but it can be manually edited.

       All  activity  from  fos  is logged to syslog (when fos is
       running as a daemon).

OPTIONS

       -c cfgfile|--configfile=cfgfile
              Normally, fos uses /etc/lvs.cf as its configuration
              file,  but  this can be overridden and another file
              can be used.

       -n|--nodaemon
              Normally, fos runs as a daemon, however using  this
              option,  fos  runs in the foreground.  When running
              in this mode, all its  output  is  sent  to  STDOUT
              instead of syslog.

       -t|--test-start
              Running fos is test mode allows the user to monitor
              what fos would actually do.  This  is  only  useful
              during debugging.

       -v|--verbose
              Display  additional  debugging  information  as  it
              runs.

       -f|--monitor
              Start and control nanny daemons that  will  monitor
              services (defined in the lvs.cf file) on a  partner
              computer   system.   Either   this    option,    or



                          Thu Mar 2 2000                        1





LVS(8)                                                     LVS(8)


              "-F|--active" must be specified.

       -F|--active
              Start  the IP services (defined in the lvs.cf file)
              on the local  system  using  scripts.  Either  this
              option or "-f|--monitor" must be specified.

       -?|--help
              Shows a verbose usage listing.

       --usage
              Outputs a terse argument summary.

SEE ALSO

       ipvsadmn(8) lvs(8) lvs.cf(5) nanny(8) pulse(8)

AUTHOR

       Keith Barrett <kbarrett@redhat.com>





































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