[Cialug] RedHat ES 4 - static IP's?

[David Champion]

Below, I meant to say "This first server has no ifcfg-eth0, the other 
one doesn't".

ifconfig just shows the loopback and eth1, as I would expect.

BTW, both servers just reverted back to their dhcp addresses again 
without any intervention (as in the servers didn't reboot, and nobody 
did anything to them). Doing a "service network restart" puts them back 
to static. Yay, RedHat.

Found this:
# ps aux | grep -i dhcp
root      2651  0.0  0.0  4356 1196 ?        Ss   Nov18   0:00 
/sbin/dhclient -1 -q -lf /var/lib/dhcp/dhclient-eth1.leases -pf 
/var/run/dhclient-eth1.pid eth1

I didn't see any obvious service that should be running dhclient. I did 
a "rpm -e dhcpv6_client", that should kill it.

-dc

Dave J. Hala Jr. wrote:
> What seems wierd to me is that it boots with DHCP. That leads me to
> believe there is a DHCP config somewhere or somehow it is a default.
> Could it be that on boot, the init scripts look for an eth0 config and
> when they don't find it, they default to dhcp?
>  
> If you do an "ifconfig", that will show you the config for all the
> interfaces. 
> 
> 
> On Mon, 2006-11-20 at 10:52, David Champion wrote:
>> No references to dhcp in any of the ifcfg files. There's no ifcfg-eth1:1 
>> or anything like that. This first server has no ifcfg-eth0, the other 
>> one does, with BOOTPROTO=dhcp, but ONBOOT=no, so I don't think that's an 
>> issue.
>>
>> Here's the ifcfg-eth1 (after I changed BOOTPROTO=static). I looked at 
>> the ifup script, looks to me like it's checking for the word "dhcp", and 
>> any other value it treats as a static address.
>>
>> DEVICE=eth1
>> HWADDR=00:18:8B:33:64:56
>> ONBOOT=yes
>> TYPE=Ethernet
>> BOOTPROTO=static
>> NETMASK=255.255.255.0
>> IPADDR=10.10.0.72
>> USERCTL=no
>> PEERDNS=yes
>> GATEWAY=10.10.0.1
>> IPV6INIT=no
>>
>>
>> Dave J. Hala Jr. wrote:
>>> Is there by chance an ifcfg-eth1:1 in your network-scripts folder that
>>> is by chance has a BOOTPROTO=DCHP line it?
>>>
>>> Grep network-scripts for BOOTPROTO=DHCP and see what it finds.
>>>
>>>
>>> On Mon, 2006-11-20 at 10:16, David Champion wrote:
>>>> I have couple of new servers with RedHat ES 4. During the setup process, 
>>>>   I configured them to have a static IP address. When the system booted, 
>>>> and again after I did a full up2date (600+ mb later...) they come up 
>>>> with a DHCP address. If I do a "system network restart", they get the 
>>>> static IP I assigned again.
>>>>
>>>> The only thing I see odd is in the 
>>>> /etc/sysconfig/network-scripts/ifcfg-eth1 (eth1 is is the first ethernet 
>>>> port labelled GB 1 on these Dell 2950's, and GB 2 is apparantly eth0 - 
>>>> but that's another story) - is  it has "BOOTPROTO=none". I'm used to 
>>>> seeing "BOOTPROTO=static". I looked in the RH knowledgbase, and a lot of 
>>>> the documentation doesn't mention "static" anywhere, but is is sometimes 
>>>> shown on other articles.
>>>>
>>>> Any ideas on this?
>>>>
>>>> -dc
>>>>
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