CentOS 6.5 Defaults Question

hi guys,

on my centos 7 machine i was looking for

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

but there is only ifcfg-enp2s0

what is enp2s0? thought i had a standard ethernet card

Hi everyone, I am a new member and also new to linux, I encountered a problem, but last week I tried but did not solve
I downloaded iso file linux 1.1.0 on page potassium https://www.kali.org, I installed on my Dell inspiron n4010, it works very well and does not have any errors, but after I update and upgrade all packages, I rebooted the system switches to the command line, I lost a lot of time to return to the graphics, but when booting up the network manager icon not seen, I have set the package network-manager-gnome_0.9.4.1-0ubuntu2_i386.deb network manager icon show but when click on the network manager icon only contained text "network manager is not running."
I also installed Wicd but could not run "could not connect to wicd's D-Bus interface. Check the wicd log for error messages."
wireless driver apparently was set before
root@kali:~# airmon-ng
PHY Interface Driver Chipset

phy0 wlan0 wl Broadcom Corporation BCM4313 802.11b/g/n (rev 01)

please help me!
please guide installed offline, my kali linux no internet connection. can download package from another machine to install.

I have a number of CentOS 7 VMs and there is only one that won't automatically connect to the wired network.

Thru the gui (Gnome 3.8.4), I found the checkbox to automatically connect it, however I would like to know what file to modify in the future for my learning experience.

I was not able to find the file to modify. I looked under /etc/sysconfig/network-scripts.

thanks

I installed Debian 7.8.0 in text mode. While I configure eth0 through /etc/network/interface it assigned the IP but unable to ping to other machine in the network. I tried /etc/init.d/networking restart but still not working for me.

While I install GUI mode, it allows me configuration done through Network Manager and it pings good to other machine.

I have selected base install during the installation.
How to fix it under text mode?

I just installed Redhat 7 and try to config the network , add the IP address to network card , but I got the problem.

I modify the file /etc/sysconfig/network-scripts/ifcfg-enp0s3 , the configuration is as below , and then reboot .

DEVICE="enp0s3"
NETBOOT="yes"
HWADDR="08:00:27:15:38:B7"
TYPE="Ethernet"
BOOTPROTO="none"
NAME="enp0s3"
UUID="462f4834-4fe7-43a7-84e7-83b2722e94c1"
ONBOOT="yes"
IPADDR="192.168.1.1"
NETMASK="255.255.255.0"

After reboot , I use "ip addr show" still not shown the ip address , the ip address is still blank , would advise what is wrong ? thanks

Java Application that we are currently using, read the IP information via using sigar library(sigar.getNetInterfaceConfig()

when we use the sigar.getNetInterfaceConfig(), it brings Primary Network Interface from the

server, and this is the problem for us.

we are using Centos server now and connected with 2 of network which are eth0, eth1.

we need to gather the IP from etho0, however in sigar, it brings the ip from eth1.

It seems that primary IP of current server set as eth1.

Therefore, we were looking for answer to modify primary IP at Centos, but could not find yet.

We really want to know how to modify or set up primary IP at Centos.

Thanks for reading such a long story from us.

Regards,

Kihong, Ko

ps. i used CentOS6

Hi all

This is bothering me too much, please tell me how to change IP address of remote machine while using ssh successfully.

I follow these steps:
1. connect to remote server using 'ssh root@server'
2. Edit '/etc/sysconfig/network-scripts/ifcfg-eth0' file
3. issue 'service network restart' command... (at this point ssh connection gets hanged)
4. Break from hanged ssh connection (<ENTER>~.)
5. Wait for some time to let service restart
6. Then finally, ssh with new ip address.

All is fine, but last time, i did something wrong while assigning new IP address, and after service restart, remote server didn't get new ip address - and now i cant connect to remote server.

Fortunately, i had a friend there, who helped me correct the problem so that i can connect again.

But what to do when there is no one to help? Is there other way i should approach this problem?

Thanks

Hello, I have an expect script where I ssh to a remote host to determine the network configuration and get from the user the network interface card that should be used. From their response, I determine the subnet mask and save the information to a text file that is later transmitted back to my local host. This is all so that I can set up virtual IP aliasing and verify that the physical IP address of the local and remote host are on the same subnet prior to continuing with the setup. I am running the script on Linux, with expect version 5.45.

The code itelf works just fine, but I'm having some issues with how it displays on the screen. As you'll see below in the example, the default system prompt displays, as does the user input command that I'm sending to the shell from the expect script.

Is there a regular expression or something that I can write to prevent the prompt and command that I'm sending from printing to the screen? I know that it should be suppressed if I have an expect command following the Code:

send -s "\nread n_card?'Enter the network interface card number for this server (i.e. eth0):   '\r

command, but everything I have tried for strings and regular expressions to expect causes the netstat -rn output to not show up all of a sudden. I'm new to expect, so I'm not really sure why this is happening.

I would really appreciate any help/suggestions. Thanks for your time!

Part of the Script Code:
Code:

expect {
   -re $prompt {   ;# Send individual commands and get user input
        set timeout -1
        
        # Get partner hostname and put in vipsetup.txt file
        send -s "hostname > vipsetup.txt\r"  
        expect -re $prompt
        
        # Display the network routing info for the user and prompt for 
        # network interface card number
        send -s "print \"The network routing table for the $ptner server is displayed below:\n\" ; netstat -rn \r"
        
        expect -re "\r(.*):\r"
        send -s "\nread n_card?'Enter the network interface card number for this server (i.e. eth0):   '\r"
        interact "\r" return    ;# Wait for user input from read command
        send -- "\r"
        send -s "echo \$n_card >> vipsetup.txt\r"  
        
        # Obtain subnet mask information for partner based on network 
        # interface card number being used
        send -s "msk=\$(cat /etc/sysconfig/network-scripts/ifcfg-\$n_card | grep NETMASK)\r"
        send -s "msk=\$(echo \${msk#NETMASK=})\r"
        send -s "echo \$msk >> vipsetup.txt\r"
    }
    timeout {
        send_user "Connection to host $hostip timed out."
        exit 6 
    }
    eof {
        send_user "Connection to host $hostip failed."
        exit
    }
}

Script Output:
Code:

The network routing table for the PRIMARY server is displayed below:
 
Kernel IP routing table
Destination     Gateway         Genmask         Flags   MSS Window  irtt Iface
10.105.65.0     0.0.0.0         255.255.255.0   U         0 0          0 eth0
0.0.0.0         10.105.65.1     0.0.0.0         UG        0 0          0 eth0
 [root@remotehost root]$
[root@remotehost root]$ ber for this server (i.e. eth0):   '              < 
Enter the network interface card number for this server (i.e. eth0):   eth0

Hi all, I am working on configuring icehouse on centos 6.6 and I am facing following issues on compute node, I am unable to start services (openstack-nova-{compute,network,api,metadata-api}) as it says pid file exists but it is dead, on compute node I have two interfaces eth0 and eth1 where eth0 is management network and eth1 is external and IP is unplumbed on it, I am unable to get logs in /var/log/nova directory, can someone let me know what am I doing wrong.

Thanks

We have 20 systems and I installed SQUID proxy on CENTOS to limit internet access but I'm unable to configure LAN and WAN. We have got one router in the network with 192.168.1.1 as default gateway. I installed squid successfully but unable to configure it in client systems as I'm unable to configure LAN and WAN ips in CentOS.
Please suggest me correct configuration of LAN and WAN for my network. We don't have any static IP with us. What series of IPs do I have to configure in Linux server? After that, what would be my Proxy IP?

I have basic knowledge about Linux...

Please suggest me Conf file accordlingly.