Re: [offtopic/plug] GUI Management

On Thu, May 08, 2008 at 10:44:53AM +0200, Jan Weber wrote:
> Can you please tell me where the configuration files to setup
> an LTSP server on your distro are and what is in there, like ip
> of server, dhcp range...  whatever?

DHCP configuration sits in /etc/dhcp/dhcpd.conf (we're going
to look more closely at dnsmask but so far it's ISC DHCPD).

There's no such thing as "server ip" ot "interface ip" since
a single server can have multiple interfaces, and a single
interface han have multiple IPs.

Said that, default network configuration subsystem in ALT Linux
3.0+ (since 2005) is http://etcnet.org based on iproute2.

Static IP adresses assigned to interface $iface can be found
in /etc/net/ifaces/$iface/ipv4address files in the form of
"192.168.0.1/24".

Ethernet interface names aren't required to be "eth*" but can
be named arbitrarily (as long as supported by the kernel).

There are some helpers aimed at dumping the [interface]
configuration, I can look closer if you'll be interested 
(or probably help with a shell plugin to provide the data
you need).

*Maybe* initial assumption of /sbin/ip present in current distros
and the possibility to get "ip ad" output like

4: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast qlen 1000
    link/ether 00:18:fe:7c:ec:49 brd ff:ff:ff:ff:ff:ff
    inet 212.40.X.2/28 brd 212.40.45.15 scope global eth0
    inet 212.40.X.3/32 scope global eth0
    inet 212.40.X.4/32 scope global eth0

or

2: int: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast qlen 1000
    link/ether 00:0f:ea:cb:46:5d brd ff:ff:ff:ff:ff:ff
    inet 10.0.0.253/24 brd 10.0.0.255 scope global int

would help at avoiding distro-specific code at read-only stage.

> > So the primary/authoritative data source is configuration
> > files or XML dump?  Or "primary only for the
> > build-from-scratch"?
> The XML is ONLY for the GUI, it will be somewhat a backup. The
> XML will be updated when configuration file was changed, and
> all changed data from the GUI is written also to the
> configuration file.

What happens if I change the value in configuration file by hand?
Would such change be noticed and propagated to XML somewhat
backup, or overwritten, or starting a configuration state fork?

PS: any standalone tool which touches system service
configuration like dhcpd.conf is on the same ground as
"edit by hand" regarding distribution-provided configuration
mechanism unless the tool is "familiar" with the mechanism.
But then it's not distro-agnostic or one has a battle of 
Linux Distributions Mountain... :)

-- 
 ---- WBR, Michael Shigorin <mike-u2l5PoMzF/[email protected]>
  ------ Linux.Kiev http://www.linux.kiev.ua/

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