bos_addhost - Adds a database server machine to the local cell configuration [DEPRECATED]


bos addhost -server <machine name> -host <host name>+ [-clone] [-cell <cell name>] [-noauth] [-localauth] [-principal <authentication principal> [-encrypt [<yes|no>]] [-verbose] [-config <configuration file>] [-help]


The bos addhost command adds an entry for each database server machine specified with the -host argument to the local cell configuration on the machine named by the -server argument.


AuriStorFS BOS Server does not support this command.

After executing this command (and waiting for the OpenAFS Update Server to propagate the changes, if it is used), restart the database server processes on all database server machines to force election of a quorum that includes the new set of machines listed in the local cell configuration. The OpenAFS Quick Start Guide explains in more detail how to add and remove database server machines.

It is best to maintain a one-to-one mapping between hostnames and IP addresses on a multihomed database server machine (this is actually the conventional configuration for any AFS machine). The BOS Server uses the gethostbyname() routine to obtain the IP address associated with the hostname specified by the -host argument. If there is more than one address, the BOS Server records the one that appears first in the list of addresses returned by the routine. The routine possibly returns addresses in a different order on different machines, which can create inconsistency.


-server <machine name>

Identifies the server machine on which to change the local cell configuration. Identify the machine by IP address or its host name (either fully-qualified or abbreviated unambiguously). For details, see bos(8).

In cells that use the Update Server to distribute the contents of the /etc/yfs/server directory, it is conventional to specify only the system control machine as a value for the -server argument. Otherwise, repeat the command for each file server machine. For further discussion, see bos(8).

-host <host name>+

Specifies the fully-qualified host name (such as of each database server machine to register in the local cell configuration.


Register the host given by -host as a non-voting clone site, which prevents the host from becoming a sync-site. This is an advanced feature and should be used with caution.

-cell <cell name>

Names the cell in which to run the command. Do not combine this argument with the -localauth flag. For more details, see bos(8).


Assigns the unprivileged identity anonymous to the issuer. Do not combine this flag with the -localauth flag. For more details, see bos(8).


Constructs a server ticket using a key from the local /etc/yfs/server/KeyFileExt file. The bos command interpreter presents the ticket to the BOS Server during mutual authentication. Do not combine this flag with the -cell or -noauth options. For more details, see bos(8).

-principal <authentication principal>

Indicates the principal to be used for authentication. This option can be useful when several credentials caches are available for different principals.

-encrypt [<yes|no>]

Enables or disables encryption for the command so that the operation's results are not transmitted across the network in clear text.


Produces on the standard output stream a detailed trace of the command's execution. If this argument is omitted, only warnings and error messages appear.

-config <configuration file>

Sets the location of the configuration file to be used. The default file is /etc/yfs/yfs-client.conf.


Prints the online help for this command. All other valid options are ignored.


The following command adds the database server machines and to the local cell configuration on the machine (the system control machine).

   % bos addhost -server -host


The issuer must be listed in the /etc/yfs/server/UserListExt file on the machine named by the -server argument, or must be logged onto a server with an account capable of reading the /etc/yfs/server/KeyFileExt file if the -localauth flag is included.


This command is not supported by the AuriStor bosserver. It is provided for use with IBM AFS 3.6 and OpenAFS servers.


KeyFileExt(5), UserListExt(5), bos(8), bos_listhosts(8), bos_removehost(8)

The OpenAFS Quick Start Guide at


IBM Corporation 2000. All Rights Reserved.

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