Networking :: Network Configuration (1 NIC) For OSCAR 6.0.5 On CentOS 5.4?

Apr 16, 2010

I'm a Linux n00b (very fluent in Windows, though ) that is attempting to set up a (currently) 3-computer cluster. My server node is a Pentium 4, and my client nodes are a Pentium 4 and a Pentium 3 (whatever I have lying around ) I chose to use OSCAR for my clustering interface and CentOS 5 for my server node OS. Yay. I made it through the installation prerequisites, but when it came to configure the NIC, I got stuck.

I opened the /etc/hosts file, tinkered with it, but something inevitably got screwed up. I can still use the Internet, but it won't let me install OSCAR. Running a system-sanity check returns:

Code:
[root@SurgeonfishR ~]# system-sanity
Checking your system...
Success: ssh-check.pl
Success: tftpboot-check.pl
Success: selinux-check.pl

[Code]...

All I need to know is what the /etc/hosts file should look like for a CentOS 5.4 installation with 1 NIC that is not connected to a domain (only a LAN). It is connected to a router which in turn is connected to my home network (I don't know what to do about that). The hostname should be surgeonfishr and the IP address should be 192.168.0.150.

I know this question is probably really stupid, but I've logged a total of about 10 hours time on Linux...ever. (And 35000 hours on Windows.)

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Nov 8, 2010

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Error during execution 6400

[code]....

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Initializing ODA: mysql
ERROR: Unknown ODA type ()
at /usr/bin/oda line 886[code]....

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I have a server that is on both a standard network and a virtual network, as follows: server1 attached to standard network server1 acting as Dom0 with two linux DomU guests (under Xen) I only have one network card. How do I configure server1 to have a different hostname on the standard network than on the virtual network? Here are the relevant network configuration files for server1:

/etc/sysconfig/network-scripts/ifcfg-eth0:1
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[Code]...

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Network A (Main Office) (OpenBSD using isakmpd)
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Do I need to install a newer kernel and install ath9k or can I just downlad a driver without updating the kernel?

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Apr 24, 2009

I have recently installed CentOS 5.3 in my system. I needed some help with the wireless configuration. Actually i have configured it and it shows the wireless name but it doesnt connect to it. in solving the issue.In the /var/log/messages , the following error appears :

Apr 24 20:46:51 localhost NetworkManager: <info> Activation (wlan0) starting connection 'OMWLAM'
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[code]....

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eth1: 100 Mbit, full duplex, link ok

[code].....

Based on what I understand, eth0 goes to monitoring and the other 2 ethernet cards go to FE. I am not an expert in system administration but would like to know if there is any issues with the above settings/configuration (in fact, im also looking for what do they infer and what is the settings?

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Jun 17, 2011

I have a webserver with 3 virtual interfaces named eth0:1 eth0:3 and eth0:3. Until yesterday all the virtual ip's worked but eth0:1 decided that it just won't work anymore since yesterday. The configs are:

eth0
Code:
DEVICE=eth0
USERCTL=no
ONBOOT=yes
BOOTPROTO=none
BROADCAST=xx.xxx.26.190
NETWORK=xx.xxx.26.160
NETMASK=255.255.255.224
IPADDR=xx.xxx.26.174
GATEWAY=xx.xxx.26.161

eth0:1
Code:
MTU=""
NETMASK=255.255.255.224
ONPARENT=yes
BROADCAST=xx.xxx.26.191
BOOTPROTO=none
NAME=""
IPADDR=xx.xxx.26.175
NETWORK=xx.xxx.26.160
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eth0:3
Code:
MTU=""
NETMASK=255.255.255.224
ONPARENT=yes
BROADCAST=xx.xxx.26.191
BOOTPROTO=none
NAME=""
IPADDR=xx.xxx.26.182
NETWORK=xx.xxx.26.160
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eth0:4
Code:
MTU=""
NETMASK=255.255.255.224
ONPARENT=yes
BROADCAST=xx.xxx.26.191
BOOTPROTO=none
NAME=""
IPADDR=xx.xxx.26.187
NETWORK=xx.xxx.26.160
ONBOOT=yes
DEVICE=eth0:4

route-eth0
Code:
ADDRESS0=0.0.0.0
NETMASK0=0.0.0.0
GATEWAY0=xx.xxx.26.161
eth0:3 and eth0:4 still work, but 2 doesn't

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Nov 18, 2010

I have a CentOS server that has some problems with the network configuration. I can't find the correct settings / help on internet

The computer has 3 network connections. ETH0 is connected to a router (a FritzBox 7050 with IP address 192.168.178.1). The ETH0 card has a fixed IP-address 192.168.178.22 - gw 192.168.178.1. Firefox as well as the webserver are working fine. ETH1 is not working (and not activated) because of problems with the drivers. ETH2 should be the intranet connection. This interfacecard has IP-address 192.168.17.1 and is connected to a switch. After the switch I have 1 computer attached with IP-address 192.168.17.3 - gw 192.168.17.1 A ping from the server to this computer gives good results and a ping from the computer to the server also. trying to ping to the fritz-box or to the internet constantly fails. As far as I can search, I'm certain that the failing is caused by routing-problems on the CentOS server.

the command 'ifconfig' of the server results :
eth0 Link encap:Ethernet HWaddr 00:1E:E5:D5:F1:C4
inet addr:192.168.178.22 Bcast:192.168.178.255 Mask:255.255.255.0
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UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

[Code].....

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DEVICE=wlan0
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Quote:

ifconfig
eth0
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Quote:

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auto lo
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http://i64.servimg.com/u/f64/11/74/16/17/linux10.jpg

Here is Windows Server 2003 configuration:
[url]

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[Code]...

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