Hi,
It seems there are some problem with the network below, as I cannot connect to the network, by the machine.
https://dl.dropboxusercontent.com/u/40211031/t749.png

what to adjust?

Hi,

your physical network, eth0 is down. Was it working in the past? Did you change something?

Evo2.

I did yesterday set up this OS, so no new change was ever applied to it. Thanks.

Hi,

ok, so you need to go ahead and configure your network. If you want information on how to do that you'll need to tell us about your setup. Eg dhcp or static? want to use network manager or /etc/sysconfig/? Using gui or command line? Otherwise please check the documentation.

Evo2.

Thanks. Here is eth0

eth0 Link encap:Ethernet HWaddr 08:00:27:BA:06:E6
inet6 addr: fe80::a00:27ff:feba:6e6/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:3 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 b) TX bytes:258 (258.0 b)

I want to have one specific IP like 192.168.168.1 to eth0. what to adjust?

Hi,

set up your /etc/sysconfig/network-scripts/ifcfg-eth0 as shown at the start of 9.2.1 in
https://access.redhat.com/documentat...nterfaces.html

Set the value of IPADDR as appropriate.

Evo2.

1 members found this post helpful.

Thanks.
I adjust this file

/etc/sysconfig/network-scripts/ifcfg-eth0

to be

DEVICE=eth0
BOOTPROTO=dhcp
ONBOOT=yes
NETMASK=255.255.255.0
IPADDR=192.168.168.1
USERCTL=no

but I still get this

eth0 Link encap:Ethernet HWaddr 08:00:27:BA:06:E6
inet6 addr: fe80::a00:27ff:feba:6e6/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:32 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 b) TX bytes:8856 (8.6 KiB)

after reboot. why?

Hi,

are you serivces configured correctly? Eg what is the output of the following?
Also what happens if you try to bring up that interface? Eg output of
Evo2.

Thanks a lot. Here are what I've got

https://dl.dropboxusercontent.com/u/40211031/out.txt

Hi,

looks like you should stop and disable NetworkManager. Eg
Then try to bring up eth0 again.
If there are any errors post them and the output of
Evo2.

Thanks a lot.

Here are what I've got

[root@CentOS65x64 huamin]# service NetworkManager stop
Stopping NetworkManager daemon: [ OK ]
[root@CentOS65x64 huamin]# chkconfig NetworkManager off
[root@CentOS65x64 huamin]# ifup eth0

Determining IP information for eth0... failed.
[root@CentOS65x64 huamin]# ifconfig eth0
eth0 Link encap:Ethernet HWaddr 08:00:27:BA:06:E6
inet6 addr: fe80::a00:27ff:feba:6e6/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:109 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 b) TX bytes:33374 (32.5 KiB)

[root@CentOS65x64 huamin]# service network status
Configured devices:
lo eth0 eth0_bk
Currently active devices:
lo eth0 eth1 virbr0
[root@CentOS65x64 huamin]#

Hi,

I just noticed that you have BOOTPROTO=dhcp in your ifcfg-eth0 file. It should be set to none as in the first example in the documentation I linked to.

Evo2.

1 members found this post helpful.

Many thanks Evo2.

Can I have the similar file like

ifcfg-eth1

to eth1 and then put dhcp to that, as now eth1 has not been assigned with the IP properly.

Actually, this OS is running within Virtualbox, on which I've put "internal network" to Adapter 1 and "Bridged adapter" to Adapter 2, and this is why I want a specific IP to eth0.

Before the change of the file to eth0, everything was fine to eth1.

Hi,

there is nothing to stop you adding ifcfg-eth1. However, I strongly suggest you read chapter 9 of the documentation I linked to. If something there doesn't make sense or seems incomplete please ask here.

Evo2.

Hi,
Here is the current ifcfg-eth0 file

DEVICE=eth0
TYPE=Ethernet
NM_CONTROLLED=yes
BOOTPROTO=none
ONBOOT=no
NETMASK=255.255.255.0
IPADDR=192.168.168.1
USERCTL=no

but I have a problem to eth1 below

https://dl.dropboxusercontent.com/u/40211031/t756.png

what to adjust?