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           The commands in the bos command suite are the administrative interface
           to the Basic OverSeer (BOS) Server, which runs on every file server
           machine to monitor the other server processes on it. If a process
           fails, the BOS Server can restart it automatically, taking into account
           interdependencies between it and other processes. The BOS Server frees
           system administrators from constantly monitoring the status of server
           machines and processes.
           There are several categories of commands in the bos command suite:
           ?   Commands to administer server process binary files: bos getdate,
               bos install, bos prune, and bos uninstall.
           ?   Commands to maintain system configuration files: bos addhost, bos
               addkey, bos adduser, bos listhosts, bos listkeys, bos listusers,
               bos removehost, bos removekey, bos removeuser, and bos setcellname.
           ?   Commands to start and stop processes: bos create, bos delete, bos
               restart, bos shutdown, bos start, bos startup, and bos stop.
           ?   Commands to set and verify server process and server machine
               status: bos getlog, bos getrestart, bos getrestricted, bos setauth,
               bos setrestart, bos setrestricted and bos status.
           ?   A command to restore file system consistency: bos salvage.
           ?   Commands to obtain help: bos apropos and bos help.
           The BOS Server and the bos commands use and maintain the following
           configuration and log files:
           ?   The /etc/openafs/server/CellServDB file lists the local cell's
               database server machines. These machines run the Authentication,
               Backup, Protection and Volume Location (VL) Server processes, which
               maintain databases of administrative information. The database
               server processes consult the file to learn about their peers,
               whereas the other server processes consult it to learn where to
               access database information as needed. To administer the CellServDB
               file, use the following commands: bos addhost, bos listhosts, bos
               removehost, and bos setcellname.
           ?   The /etc/openafs/server/KeyFile file lists the server encryption
               keys that the server processes use to decrypt tickets presented by
               client processes and one another. To administer the KeyFile file,
               use the following commands: bos addkey, bos listkeys, and bos
           ?   The /etc/openafs/server/ThisCell file defines the cell to which the
               server machine belongs for the purposes of server-to-server
               communication.  Administer it with the bos setcellname command.
               There is also a /etc/openafs/ThisCell file that defines the
               commands: bos create, bos delete, bos getrestart, bos setrestart,
               bos start, and bos stop.
           ?   The /usr/afs/log/BosLog file records important operations the BOS
               Server performs and error conditions it encounters.
           For more details, see the reference page for each file.


           The following arguments and flags are available on many commands in the
           bos suite. The reference page for each command also lists them, but
           they are described here in greater detail.
           -cell <cell name>
               Names the cell in which to run the command. It is acceptable to
               abbreviate the cell name to the shortest form that distinguishes it
               from the other entries in the /etc/openafs/CellServDB file on the
               local machine. If the -cell argument is omitted, the command
               interpreter determines the name of the local cell by reading the
               following in order:
               ?   The value of the AFSCELL environment variable.
               ?   The local /etc/openafs/ThisCell file.
               Do not combine the -cell and -localauth options. A command on which
               the -localauth flag is included always runs in the local cell (as
               defined in the server machine's local /etc/openafs/server/ThisCell
               file), whereas a command on which the -cell argument is included
               runs in the specified foreign cell.
               Prints a command's online help message on the standard output
               stream. Do not combine this flag with any of the command's other
               options; when it is provided, the command interpreter ignores all
               other options, and only prints the help message.
               Constructs a server ticket using the server encryption key with the
               highest key version number in the local /etc/openafs/server/KeyFile
               file. The bos command interpreter presents the ticket, which never
               expires, to the BOS Server during mutual authentication.
               Use this flag only when issuing a command on a server machine;
               client machines do not usually have a /etc/openafs/server/KeyFile
               file.  The issuer of a command that includes this flag must be
               logged on to the server machine as the local superuser "root". The
               flag is useful for commands invoked by an unattended application
               program, such as a process controlled by the UNIX cron utility or
               by a cron entry in the machine's /etc/openafs/BosConfig file. It is
               also useful if an administrator is unable to authenticate to AFS
               but is logged in as the local superuser "root".
               other unusual circumstances). In normal circumstances, the BOS
               Server allows only privileged users to issue commands that change
               the status of a server or configuration file, and refuses to
               perform such an action even if the -noauth flag is provided. Do not
               combine the -noauth and -localauth flags.
           -server <machine name>
               Indicates the AFS server machine on which to run the command.
               Identify the machine by its IP address in dotted decimal format,
               its fully-qualified host name (for example, ""), or by
               an abbreviated form of its host name that distinguishes it from
               other machines. Successful use of an abbreviated form depends on
               the availability of a name service (such as the Domain Name Service
               or a local host table) at the time the command is issued.
               For the commands that alter the administrative files shared by all
               server machines in the cell (the bos addhost, bos addkey, bos
               adduser, bos removehost, bos removekey, and bos removeuser
               commands), the appropriate machine depends on whether the cell uses
               the United States or international version of AFS:
               ?   If the cell (as recommended) uses the Update Server to
                   distribute the contents of the /etc/openafs/server directory,
                   provide the name of the system control machine. After issuing
                   the command, allow up to five minutes for the Update Server to
                   distribute the changed file to the other AFS server machines in
                   the cell. If the specified machine is not the system control
                   machine but is running an upclient process that refers to the
                   system control machine, then the change will be overwritten
                   when the process next brings over the relevant file from the
                   system control machine.
               ?   Otherwise, repeatedly issue the command, naming each of the
                   cell's server machines in turn. To avoid possible inconsistency
                   problems, finish issuing the commands within a fairly short


           To issue any bos command that changes a configuration file or alters
           process status, the issuer must be listed in the
           /etc/openafs/server/UserList file on the server machine named by the
           -server argument. Alternatively, if the -localauth flag is included the
           issuer must be logged on as the local superuser "root".
           To issue a bos command that only displays information (other than the
           bos listkeys command), no privilege is required.


           BosConfig(5), CellServDB(5), KeyFile(5), ThisCell(5), UserList(5),
           bos_addhost(8), bos_addkey(8), bos_adduser(8), bos_apropos(8),
           bos_create(8), bos_delete(8), bos_exec(8), bos_getdate(8),
           bos_getlog(8), bos_getrestart(8), bos_getrestricted(8), bos_help(8),

    OpenAFS 2012-03-26 BOS(8)


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