linux server question

[deckoh]

the short version is... I need a method to make linux request a dhcp lease....
I know of one way to do it for sure... but it would involve the server disconnecting everyone for several seconds every half hour...

soooo what I need is a way to check if the lease is good and if not then do a "ifdown eth0" followed with a "ifup eth0"

this is also a gaming server

 

[stefanwagner]

thought of ping?

pingok=$(ping -c1 [URL unfurl="true"]www.google.de[/URL] >/dev/null 2>&1 && echo "ok")
if [[ "ping"$pingok == "pingok" ]]
then
	echo "online"
else
	echo "offline"
fi

perhaps you replace '

http://www.google.de'

with your dns-server.

seeking a job as java-programmer in Berlin:

http://home.arcor.de/hirnstrom/bewerbung

 

[sleipnir214]

deckoh:
Using DHCP on a server is not a particularly good idea. Although most of the time when a lease expires, the DHCP server will hand your machine the same number, there are circumstances where it won't.

But to answer your question, on Linux, DHCP lease information can be found in files in /var/lib/dhcp.

Take a look at /var/lib/dhcp/dhclient-eth0.leases, for example, to see the lease information for eth0.


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