sysid(5) [debian man page]
SYSID(5) AFS File Reference SYSID(5) NAME
sysid - Lists file server machine interface addresses registered in VLDB DESCRIPTION
The sysid file records the network interface addresses that the File Server (fileserver process) registers in the Volume Location Database (VLDB) for the local file server machine. Each time the File Server restarts, it builds a list of interfaces on the local machine by reading the /var/lib/openafs/local/NetInfo file, if it exists. If the file does not exist, the File Server uses the list of network interfaces configured with the operating system. It then removes from the list any addresses that appear in the /var/lib/openafs/local/NetRestrict file, if it exists. The File Server records the resulting list in the binary-format sysid file and registers the interfaces in the VLDB. When the Cache Manager requests volume location information, the Volume Location (VL) Server provides all of the interfaces registered for each server machine that houses the volume. This enables the Cache Manager to make use of multiple addresses when accessing AFS data stored on a multihomed file server machine. CAUTIONS
The sysid file is unique to each file server machine, and must not be copied from one machine to another. If it is a common practice in the cell to copy the contents of the /var/lib/openafs/local directory from an existing file server machine to a newly installed one, be sure to remove the sysid file from the new machine before starting the "fs" trio of processes, which includes the fileserver process. A maximum of 15 file server interface addresses can be registered in the VLDB. SEE ALSO
NetInfo(5), NetRestrict(5), vldb.DB0(5), fileserver(8) COPYRIGHT
IBM Corporation 2000. <http://www.ibm.com/> All Rights Reserved. This documentation is covered by the IBM Public License Version 1.0. It was converted from HTML to POD by software written by Chas Williams and Russ Allbery, based on work by Alf Wachsmann and Elizabeth Cassell. OpenAFS 2012-03-26 SYSID(5)
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NETRESTRICT(5) AFS File Reference NETRESTRICT(5) NAME
NetRestrict - Defines interfaces not to register with AFS servers DESCRIPTION
There are two NetRestrict files, one for an AFS client and one for an AFS File Server or database server. The AFS client NetRestrict file specifies the IP addresses that the client should not register with the File Servers it connects to. The server NetRestrict file specifies what interfaces should not be registered with AFS Database Servers or used to talk to other database servers. Client NetRestrict The NetRestrict file, if present in a client machine's /etc/openafs directory, defines the IP addresses of the interfaces that the local Cache Manager does not register with a File Server when first establishing a connection to it. For an explanation of how the File Server uses the registered interfaces, see NetInfo(5). As it initializes, the Cache Manager constructs a list of interfaces to register, from the /etc/openafs/NetInfo file if it exists, or from the list of interfaces configured with the operating system otherwise. The Cache Manager then removes from the list any addresses that appear in the NetRestrict file, if it exists. The Cache Manager records the resulting list in kernel memory. The NetRestrict file is in ASCII format. One IP address appears on each line, in dotted decimal format. The order of the addresses is not significant. The value 255 is a wildcard that represents all possible addresses in that field. For example, the value 192.12.105.255 indicates that the Cache Manager does not register any of the addresses in the 192.12.105 subnet. To display the addresses the Cache Manager is currently registering with File Servers, use the fs getclientaddrs command. Server NetRestrict The NetRestrict file, if present in the /var/lib/openafs/local directory, defines the following: o On a file server machine, the local interfaces that the File Server (fileserver process) does not register in the Volume Location Database (VLDB) at initialization time. o On a database server machine, the local interfaces that the Ubik synchronization library does not use when communicating with the database server processes running on other database server machines. As it initializes, the File Server constructs a list of interfaces to register, from the /var/lib/openafs/local/NetInfo file if it exists, or from the list of interfaces configured with the operating system otherwise. The File Server then removes from the list any addresses that appear in the NetRestrict file, if it exists. The File Server records the resulting list in the /var/lib/openafs/local/sysid file and registers the interfaces in the VLDB. The database server processes use a similar procedure when initializing, to determine which interfaces to use for communication with the peer processes on other database machines in the cell. The NetRestrict file is in ASCII format. One IP address appears on each line, in dotted decimal format. The order of the addresses is not significant. To display the File Server interface addresses registered in the VLDB, use the vos listaddrs command. SEE ALSO
NetInfo(5), sysid(5), vldb.DB0(5), fileserver(8), fs_getclientaddrs(1) vos_listaddrs(1) COPYRIGHT
IBM Corporation 2000. <http://www.ibm.com/> All Rights Reserved. This documentation is covered by the IBM Public License Version 1.0. It was converted from HTML to POD by software written by Chas Williams and Russ Allbery, based on work by Alf Wachsmann and Elizabeth Cassell. OpenAFS 2012-03-26 NETRESTRICT(5)