Provided by: ion_3.2.1+dfsg-1.1_amd64 bug


       ionadmin - ION node administration interface


       ionadmin [ commands_filename | . ]


       ionadmin configures, starts, manages, and stops the ION node on the local computer.

       It configures the node and sets (and reports on) global operational settings for the DTN
       protocol stack on the local computer in response to ION configuration commands found in
       commands_filename, if provided; if not, ionadmin prints a simple prompt (:) so that the
       user may type commands directly into standard input.  If commands_filename is a period
       (.), the effect is the same as if a command file containing the single command 'x' were
       passed to ionadmin -- that is, the ION node's rfxclock task is stopped.

       The format of commands for commands_filename can be queried from ionadmin by entering the
       command 'h' or '?' at the prompt.  The commands are documented in ionrc(5).

       Note that ionadmin always computes a congestion forecast immediately before exiting.  The
       result of this forecast -- maximum projected occupancy of the DTN protocol traffic
       allocation in ION's SDR database -- is retained for application flow control purposes: if
       maximum projected occupancy is the entire protocol traffic allocation, then a message to
       this effect is logged and no new bundle origination by any application will be accepted
       until a subsequent forecast that predicts no congestion is computed.  (Congestion
       forecasts are constrained by horizon times, which can be established by commands issued to
       ionadmin.  One way to re-enable data origination temporarily while long-term traffic
       imbalances are being addressed is to declare a congestion forecast horizon in the near
       future, before congestion would occur if no adjustments were made.)


       "0" Successful completion of ION node administration.


           Enter interactive ION configuration command entry mode.

       ionadmin host1.ion
           Execute all configuration commands in host1.ion, then terminate immediately.


       Status and diagnostic messages from ionadmin and from other software that utilizes the ION
       node are nominally written to a log file in the current working directory within which
       ionadmin was run.  The log file is typically named ion.log.

       See also ionconfig(5) and ionrc(5).


       Environment variables ION_NODE_LIST_DIR and ION_NODE_WDNAME can be used to enable the
       operation of multiple ION nodes on a single workstation computer.  See section 2.1.3 of
       the ION Design and Operations Guide for details.


       Note: all ION administration utilities expect source file input to be lines of ASCII text
       that are NL-delimited.  If you edit the ionrc file on a Windows machine, be sure to use
       dos2unix to convert it to Unix text format before presenting it to ionadmin.  Otherwise
       ionadmin will detect syntax errors and will not function satisfactorily.

       The following diagnostics may be issued to the log file:

       Can't open command file...
           The commands_filename specified in the command line doesn't exist.

       ionadmin SDR definition failed.
           A node initialization command was executed, but an SDR database already exists for the
           indicated node.  It is likely that an ION node is already running on this computer or
           that destruction of a previously started the previous ION node was incomplete.  For
           most ION installations, incomplete node destruction can be repaired by (a) killing all
           ION processes that are still running and then (b) using ipcrm to remove all SVr4 IPC
           objects owned by ION.

       ionadmin can't get SDR parms.
           A node initialization command was executed, but the ion_config_filename passed to that
           command contains improperly formatted commands.  Please see ionconfig(5) for further

       Various errors that don't cause ionadmin to fail but are noted in the log file may be
       caused by improperly formatted commands given at the prompt or in the commands_filename.
       Please see ionrc(5) for details.


       If the ion_config_filename parameter passed to a node initialization command refers to a
       nonexistent filename, then ionadmin uses default values are used rather than reporting an
       error in the command line argument.

       Report bugs to <>


       ionrc(5), ionconfig(5)