vos changeaddr - Changes or removes a file server machine's entry in the VLDB

vos changeaddr << -oldaddr <original IP address >>> << [-newaddr <new IP address] >>> [-remove] << [-cell <cell name] >>> [-noauth] [-localauth] [-verbose] [-help]

vos ch << -o <original IP address >>> << [-ne <new IP address] >>> [-r] << [-c <cell name] >>> [-no] [-l] [-v] [-h]

The vos changeaddr command removes a server entry from the Volume Location Database (VLDB) when the -remove flag is combined with the -oldaddr argument. There must be no VLDB entries that list the machine as a site for any version of a volume (if necessary, use the vos move or vos remove command to more or remove volumes). It is appropriate to remove a VLDB server entry when removing the corresponding file server machine from service; this is the only recommended use of the command.

To display all VLDB server entries, use the vos listaddrs command.

Combining the command's -oldaddr and -newaddr arguments is no longer the appropriate way to change the IP address registered for a file server machine. Furthermore, if a machine is multihomed and its server entry includes several addresses, then the address specified with the -newaddr argument replaces all of the addresses currently listed in the server entry that includes the address specified by the -oldaddr argument. This effectively makes the machine single-homed with respect to AFS operations, which is probably not the desired result.

The recommended method for changing the IP addresses in a server entry is instead to restart the CWfs process group (which includes the File Server) after using the utilities provided by the operating system to reconfigure the machine's network interfaces. For a description of how the File Server constructs and registers a list of its network interfaces in the VLDB, see the sysid(5) manpage.

If, counter to recommended usage, the command is used to change the IP address in a server entry, it does not also change the names of machine entries in the Protection Database. Operations fail when they refer to a protection group that has an obsolete IP address in it. Use the pts rename command to change the names of machine entries that correspond to the addresses changed with this command. Changing the address of a database server machine also requires updating the client and server versions of the CellServDB file on every machine.

Specifies the IP address currently registered for the file server machine in the VLDB server entry. If there are multiple addresses registered for a multihomed machine, use any of them to identify the server entry. Specifies the new IP address that replaces all currently registered addresses. Removes from the VLDB the server entry that includes the address specified by the -oldaddr argument. Names the cell in which to run the command. Do not combine this argument with the -localauth flag. For more details, see the vos(1) manpage. Assigns the unprivileged identity CWanonymous to the issuer. Do not combine this flag with the -localauth flag. For more details, see the vos(1) manpage. Constructs a server ticket using a key from the local /etc/openafs/server/KeyFile file. The vos command interpreter presents it to the Volume Server and Volume Location Server during mutual authentication. Do not combine this flag with the -cell argument or -noauth flag. For more details, see the vos(1) manpage. 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. Prints the online help for this command. All other valid options are ignored.

The following command removes the VLDB server entry that includes the IP address CW192.12.107.214.

   % vos changeaddr -oldaddr 192.12.107.214 -remove

Issuer must be listed in the /etc/openafs/server/UserList file on the machine specified with the -oldaddr argument and on each database server machine.

the CellServDB(5) manpage, the UserList(5) manpage, the sysid(5) manpage, the fileserver(8) manpage, the pts_rename(1) manpage, the vos(1) manpage, the vos_listaddrs(1) manpage

IBM Corporation 2000. <http://www.ibm.com/> All Rights Reserved.

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