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Old 5th September 2011, 02:06
tdurham tdurham is offline
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Default ? Can't determine specific details for static IP setup

Please read this carefully before assuming that I have not researched this for days on end. I have a dedicated "cloud" server from 1and1 and I have loaded Debian lenny 64 on it. I have bricked it almost 10 times trying to set the static IP info for the server. I can't figure out what I am doing wrong. This is "pre-imaged" server. There are 100's of samples on how to fill out the /etc/network/interfaces file but they are ALWAYS for local (or similar IP's. They NEVER tell a non programmer how to determine what the values should be. So here is what I do each time after the re-image.

I install all my updates and I am installing Nginx instead of Apache. I have 6 ips assigned to this server. (I changed my IP's for this example).

Main Server IP:
Additional IP's : thru

Step 1: vim /etc/hosts localhost.localdomain localhost u15761234.onlinehome-server.com u15761234 default-domain.com

(I do not add anything to this file. I am not setting up the Virtual Servers right now. I just want to change it from DHCP to static.

Step 2: vim /etc/network/interfaces

# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

# The loopback network interface
auto lo eth0
iface lo inet loopback

# The primary network interface
#allow-hotplug eth0
iface eth0 inet dhcp


Then I run # netstat -nr

u15761234:~# netstat -nr
Kernel IP routing table
Destination Gateway Genmask Flags MSS Window irtt Iface UH 0 0 0 eth0 UG 0 0 0 eth0


I then edit my Primary Network Interface to be this:

# The primary network interface
auto eth0
iface eth0 inet static
gateway (I am just using value from above)
network (this is what I have no idea what it should be???
broadcast (I know this is optional).

Should I specify a DNS server here?


Then I run # /etc/init.d/networking restart

I loose my SSH connection and server is non reachable and can't be restarted from the 1and1 control panel. I have to re-image and start all over again.

Any help will be greatly appreciated.
1. What files have to be updated to change it to a static IP setup and not run DHCP (only /etc/hosts and /etc/network/interfaces ??? )

2. How do I determine the proper value to put in NETWORK entry?

3. Do I used the Gateway value from where I ran netstat -nr

4. Is there a way to do this so that IF a person screws something up (like I have done 10 times trying), that it will have a "fall back network config" to roll over to and still boot up.

Thanks for all of your help!!!

Tim D
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Old 5th September 2011, 03:41
mentes mentes is offline
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This is the whole /etc/network/interfaces that you need in your server.

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
auto eth0
iface eth0 inet static
	gateway --> This is the output of your netstat -nr 
	# dns-* options are implemented by the resolvconf package, if installed
	dns-nameservers --> These are google nameservers, you can use others
	dns-search yourdomain.com
auto eth0:1
iface eth0:1 inet static
auto eth0:2
iface eth0:2 inet static
auto eth0:3
iface eth0:3 inet static
auto eth0:4
iface eth0:4 inet static
auto eth0:5
iface eth0:5 inet static
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