nsca-ng - monitoring command acceptor

       Holger Weiss <holger@weiss.in-berlin.de>

Version 1.6                                      March 19, 2019                                       nsca-ng(8)

       The  nsca-ng  server  makes  the  Nagios  command  file  accessible from remote systems.  This allows for
       submitting passive check results, downtimes, and many other commands to Nagios (or compatible  monitoring
       solutions).   The communication with clients is TLS encrypted and authenticated using pre-shared keys (as
       per RFC 4279).  The nsca-ng server supports per-client passwords and fine-grained authorization control.

       The server process rereads its configuration file when it receives a hangup signal (SIGHUP) by  executing
       itself with the name and arguments it was started with.

       When  compiled  with systemd(1) support, the nsca-ng server auto-detects whether it was socket activated.
       If so, it behaves as if the -F option was specified, while it  ignores  the  -b  option  and  the  listen
       setting in the nsca-ng.cfg(5) file.  The nsca-ng server supports systemd(1)'s notify process startup type
       as well as the WatchdogSec feature (see the systemd.service(5) manual).

/etc/nsca-ng.cfg
              The nsca-ng.cfg(5) configuration file.

nsca-ng - monitoring command acceptor

-blisten
              Bind  to  the  specified  listen  address  or  host name.  The default setting is “*”, which tells
              nsca-ng to listen on all available interfaces.  A colon (“:”) followed by a service name  or  port
              number  may  be  appended  in  order to override the default port (5668) used by nsca-ng.  If this
              option is specified, the listen setting in the nsca-ng.cfg(5) file is ignored.

       -Cfile
              Submit monitoring commands into the specified file.  This should be the  named  pipe  (FIFO)  that
              Nagios  checks  for  external  commands  to  process.   By  default, nsca-ng submits commands into
              /var/nagios/rw/nagios.cmd.  This option takes precedence over  the  command_file  setting  in  the
              nsca-ng.cfg(5) file.

       -cfile
              Read  the  configuration  from  the specified file instead of using the default configuration file
              /etc/nsca-ng.cfg.  If a directory is specified instead of a file, the configuration will  be  read
              from  all files with a .cfg or .conf extension in this directory and all subdirectories.  Symbolic
              links are followed.

       -F     Don't detach from the controlling terminal, and write all messages to the  standard  error  output
              (unless the -s option is specified).

       -h     Print usage information to the standard output and exit.

       -llevel
              Use the specified log level, which must be an integer value between 0 and 5 inclusive.  A value of
              0  tells  nsca-ng  to  generate only fatal error messages, 1 adds non-fatal error messages, 2 adds
              warnings, 3 additionally spits out every submitted monitoring command (plus startup  and  shutdown
              notices),  4  also  logs  each  message  sent  or  received at the protocol level, and 5 generates
              additional debug output.  The default log level is 3.  If this option is specified, the  log_level
              setting in the nsca-ng.cfg(5) file is ignored.

       -Pfile
              During  startup, try to create and lock the specified file and write the process ID of the nsca-ng
              daemon into it.  Bail out if another process holds a lock on the file.  By default,  no  such  PID
              file  is  written.   This  option takes precedence over the pid_file setting in the nsca-ng.cfg(5)
              file.

       -S     Write all messages to the standard error output and (with the exception of  startup  messages)  to
              the system logger.  This option may only be specified together with the -F option.

       -s     Send  all  messages  to  the  system  logger,  except  for  startup messages.  This is the default
              behaviour (unless the -F option is specified).

       -V     Print version information to the standard output and exit.

nsca-ng.cfg(5), send_nsca(8), send_nsca.cfg(5)

       http://www.nagios.org/developerinfo/externalcommands/

nsca-ng [-FSs] [-blisten] [-Cfile] [-cfile] [-llevel] [-Pfile]

       nsca-ng-h | -V