kafs-check-config - Man Page

kafs-check-config [-46PDvv] [-c <conffile>]* [-N <restriction>] [<cellname>]*

This program is used to check the configuration for the in-kernel AFS filesystem (kAFS).  This configuration is used when systemd mounts the filesystem to load up the cell database and create cell automounts in the /afs directory.

The configuration is also used by the kernel name resolver upcall to provide static configuration for some cells and to specify overrides and limits on DNS lookups.

If a list of cellname arguments is given, the listed cells will be dumped, including the sources of the Volume Location records and address records.

-4

Only show IPv4 addresses in the dump.

-6

Only show IPv6 addresses in the dump.

-P

Dump the parse tree of the configuration file(s).

-D

Dump the cell database extracted from the configuration.

-v

Increase the verbosity of the output.  This may be specified multiple times.

-c <conffile>

Specify a configuration file to read instead of the system default. This may be specified multiple times and the configuration files are read and applied in order.

-N <restriction>

Apply a restriction to the lookup performed for the listed cells (if any are).  Valid restrictions include:

vl-srv

Don't use SRV records to find Volume Location servers.

vl-afsdb

Don't use AFSDB records to find Volume Location servers.

vl-all

Don't use SRV or AFSDB records to find Volume Location servers.

vl-host

Don't look cell name up as hostname to find a Volume Location server.

vl-dns

Don't do any lookups to find Volume Location servers.  Use only the static configuration.

<cellname>

The AFS cell name to display.  Multiple cells may be specified.  If no cell name is specified the default cell specified in ​/proc/net/afs/rootcell is displayed.

0 - If check okay and any dumping succeeded

1 - If an error occurs during processing

2 - If a command line error occurs

To display the configuration for the default cell:

​        # kafs-check-config
​
​        === Found cell some-cell.org ===
​          - use-dns=no
​          - show-cell=no
​          - status: no-lookup, from config
​          - VLSERVER shelter-4.some-cell.org [good; nss]
​            - address 10.0.0.48
​          - VLSERVER shelter-5.some-cell.org [good; nss]
​            - address 10.0.0.54

To display two specific cells:

​        # kafs-check-config ir.stanford.edu grand.central.org
​
​        === Found cell ir.stanford.edu ===
​          - show-cell=no
​          - status: good, from SRV
​          - VLSERVER afsdb3.stanford.edu [good; nss]
​            - udp
​            - port 7003, pref 0, weight 0
​            - address 171.64.7.246
​          - VLSERVER afsdb2.stanford.edu [good; nss]
​            - udp
​            - port 7003, pref 0, weight 0
​            - address 171.64.7.234
​          - VLSERVER afsdb1.stanford.edu [good; nss]
​            - udp
​            - port 7003, pref 0, weight 0
​            - address 171.64.7.222
​
​        === Found cell grand.central.org ===
​          - show-cell=no
​          - status: good, from SRV
​          - VLSERVER grand.mit.edu [good; nss]
​            - udp
​            - port 7003, pref 0, weight 0
​            - address 18.9.48.14
​          - VLSERVER grand-old-opry.central.org [good; nss]
​            - udp
​            - port 7003, pref 0, weight 0
​            - address 128.2.13.219

kafs(7), kafs-client.conf(5), kafs-preload(8)

Copyright (C) 2019 Red Hat, Inc. All Rights Reserved.

Written by David Howells (dhowells@redhat.com)

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

kafs-client.conf(5).