Fedora Networking :: Create A File Like "ifcfg-eth0:1" And Put Contents?
Jun 9, 2010
I am having a problem when creating alias in Fedora Core 10. When i create a file like "ifcfg-eth0:1" and put contents in it like
DEVICE=eth0:1
BOOTPROTO=static
IPADDR=ip addrss
Netmask=Netmask
and when i save settings and restart with "service network restart" the network card does not create any alias like eth0:1 instead it replace the original ip address of eth0 with the ip address i given to eth0:1. So i want to keep both network ips of eth0 and eth0:1.
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Jun 1, 2011
When I do service network start it is giving me the error grep : can not find directory ifcfg-ifcfg-eth0....
For some reason it is adding another ifcfg to my ifcfg-eth0 file.
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Mar 18, 2009
I've been racking my brains over the past few days trying to figure out why my NIC card (network interface card) won't show up in the ifcfg-eth0 file.When I configure a new server (like this one) I always go to:/etc/sysconfig/network-scripts/ifcfg-eth0 and from there I usally see the name of my NIC's manufacturer's name and the hardware MAC address.Then it's only a simple process of entering the server's IP address, netmask and gateway and I'm up and running in no time...But not in this case! the ifcfg-eth0 file is completely blank! There's not ONE single line of config info in it... (?)The server runs an Intel core 2 duo (dual-core) CPU with 1 gig of RAM.
I've even re-formatted the drive and re-installed Centos 5.1 on the darn thing 3 times and it simply won't work.The server cannot resolve when I do a wgetIt also gives me a 'resolution problem in the named configuration'.What I don't understand is that the 2 small LEDs on the Cat 5 cable lights up and flash at what appear to be regular intervals here.
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Jul 12, 2010
I run a VMware clone of CentOS 5.3, I observe that kudzu [i.e. /etc/init.d/kudzu, from /etc/rc3.d/S05kudzu or /etc/rc5.d/S05kudzu] detects a MAC address change on eth0 and then creates a /etc/sysconfig/network-scripts/ifcfg-eth0.bak file. This .bak file is identical to the original ifcfg-eth0 file except for the value of the HWADDR [i.e. MAC address] parameter. I would be unconcerned but for the fact that /usr/bin/neat indicates that both ifcfg-eth0 AND ifcfg-eth0.bak are 'Active'. The following solution may help others with the same (or similar) problem:
[Code]...
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May 12, 2009
I have just upgraded a CentOS 5.2 box to Centos 5.3
I did have a bridged networking setup for Virtualbox which worked well. eth0 was bridged with br0. br0 boot protocol was DHCP and it sent its DHCP_HOSTNAME to the windows DHCP servers.
since the upgrade the br0 does not get an address but the eth0 does. I found that the scripts in /etc/sysconfig/network-scripts/ifcfg-* are getting rewritten.
I figure I may not need to have a bridge any more so I stripped that out to try to get a simple network setup working. I now just have eth0. I edited /etc/sysconfig/network-scripts/ifcfg-eth0 so that it looked like this,
~]# cat /etc/sysconfig/network-scripts/ifcfg-eth0
# Attansic Technology Corp. L1 Gigabit Ethernet Adapter
DEVICE=eth0
BOOTPROTO=dhcp
[Code].....
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Jun 11, 2009
When I setup the server I added multiple ips. Now that I need to edit ip info I can't find any alias files in the network-scripts folder. But restarting server the ips work fine. Is there some where else that this would be stored.
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Jul 20, 2011
I have using fedora 10 on IBM Z60m Laptop, and my eth0 is not been up even is "ONBOOT=yes" in /etc/sysconfig/network-scripts/ifcfg-eth0. why I have to make it up every time
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Feb 3, 2011
what i want to do is
client <--> wlan0 <--> computer <--> eth0 <--> internet
i have 2 network connections eth0 wired connected to internet wlan0 wireless (work fine) i have installed hostapd with madwifi and so on oki when i run hostapd the clients see the hot spot oki clients connect with wpa oki network manager run at demand not automatic (keep it for internet help) now i'm a bit lost what do i need is wlan0 give the client an ip (dhcp demand) create a bridge between wlan0 and eth0 steps to create a permanent bridge between wlan0 and eth0
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Mar 9, 2011
how to remove the network alias (ex: ifcfg-eth0:2)from RHEL5, i had deleted the ifcfg-eth0:2 file from /etc/sysconfig/network-scripts/ifcfg-eth0:3but i can still see the entry in the graphical network configuration after i issued the command system-config-network, i want to remove it from there.
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Apr 17, 2011
I'm nearly at the end of creating a shell script that automates changing network settings by prompting the user for desired settings, then applying them.
In the course of my development, I created temporary copies of /etc/sysconfig/network-scripts/ifcfg-eth0 (/etc/sysconfig/network-scripts/ifcfg-eth0_tmp1, for example) so as to not alter the original file. Little did I know that on boot the system would attempt to load each of these kinds of files and associate it with an ethernet connection, in this case eth0.
So..... now there are multiple copies in the /etc/sysconfig/network-scripts diretory that essentially have the same settings. They are..
/etc/sysconfig/network-scripts/ifcfg-eth0
/etc/sysconfig/network-scripts/ifcfg-eth0_tmp1
/etc/sysconfig/network-scripts/ifcfg-eth0_tmp2
Now when the system boots, it attempts to load them all. The boot doesn't appear to complete, and I can't ping, login, or otherwise access the system through convention routes (putty, etc.).
The easy solution would be to delete the tmp files and reboot. Now, how do I do that without being able to log in to the server. It's a VM by the way, if that makes a difference.
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Jul 2, 2011
(and new-ish to Linux in general) and would appreciate some assistance with fixing a problem I'm having with getting wireless working on my computer.Computer specs: Lenovo Thinkpad Edge 520, I5Wireless card: Intel WiFi Link 1000 b/g/n(Note: I also have a Netgear USB wireless adapter, and trying to use this does not solve my problem)I cannot activate wireless. When I go to Network Settings > Wireless, it is listed as "unavailable", and "off". When I try to switch wireless "on", it says "disconnected", but then immediately switches back to "off".Having tried to browse various forums and such for a solution, I tried looking for the file ifcfg-wlan0 under /etc/sysconfig/network-scripts, but it doesn't exist
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Apr 26, 2011
I need help to do a program that emulates the following shell command line:"sort </etc/passwd | less".Using a socket in a connection-oriented setup.First the contents of the file /etc/password are being fed into the sort program. The sort program is then sorting the contents of the file and sending it to another programm called less. Less is paging the results so that you can see one page of the results at a time.I know that i can solve the problem this way:
1. Create a server program that will stream the contents of a file to any client that connects to it
2. Create a client application that will connect to the server and download the contents of the file. The program should then sort the file. After sorting the file the client should connect to the "less" program and send the sorted results
3. Create a server program that will listen for connections and download whatever is sent to it. It will then display that data one page at a time.
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Sep 16, 2009
Being new to this area .I have been assigned a task which i am unable to do . Can any one please help me .
I have requirement where i have input file XYZ_111_999_YYYYMMDD_1.TXT and with header and series of Numbers and Footer.
I want to create a mutiple output files with each file having a seperate code which is stored in text file and create XYZ_222_999_YYYYMMDD_1.TXT . and add date in the contents next to series of numbers .Like this
Before change the file looks like this
file name XYZ_111_999_YYYYMMDD_1.TXT
001,19SEP2009-14:05:05,000000003
1234
4567
6785
END_OF_DATA
[Code]....
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Feb 3, 2011
I installed 14 and no ifcfg- files. (no ifcfg-eth0)can i create them ??
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Jul 24, 2010
Missing ifcfg-eth[2-5] fileset for ZNYX 345Q Quad Port 10/100 cards. I have showing in the gui network device that my ports for my ZNYX ZX345Q Quad Port card my ports are Auto eth2, Auto eth3 etc. My Motherboard and Intel cards show as System eth0 and System eth1.
There ARE corresponding entries for those in my /etc/sysconfig/network-settings/ directory, but there are not ifcfg-eth[2-5] files to correspond to these adapters. Can I just write my own files and that will do it?
How does Fedora 12/13 load these drivers into the kernel without having these ifcfg files?
I'd love to know if there is another way Fedora controls NICs / other system resources.
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Dec 31, 2010
Running CentOS5.4 on home-build.The wireless card setup is working,at least with regard to internet access through a Linksys router.Trying to set up Windows shares using SAMBA has been problemmatic. After many searches the ifcfg file seems to be a mystery. So what is meant by the "ADDRESS0=" in the ifcfg-wlan0 file. it is the ""the NETWORK that matches the NETMASK". But even that I cannot quite understand (apparently) as my efforts to enter different items in this file have all failed.
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Jan 21, 2010
Running CentOS5.4 on home-build. The wireless card setup is working, at least with regard to internet access through a Linksys router. Trying to set up Windows shares using SAMBA has been problemmatic. After many searches the ifcfg file seems to be a mystery. So what is meant by the "ADDRESS0=" in the ifcfg-wlan0 file. Searches suggest it is the ""the NETWORK that matches the NETMASK". But even that I cannot quite understand (apparently) as my efforts to enter different items in this file have all failed.
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Jun 16, 2010
I installed the latest CentOS 5.5 in my PC. I added some public domain projects on it. Now how can I make another boot-able CentOS iso file with all the new projects I just added? In the other words, I try to create a boot-able CD with the CentOS and all the projects on it.
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Jan 5, 2011
I have 2 10gb fiber cards on a server running red hat 5.3, eth4 and eth5. After replacing the eth4 card, it doesnt show up any ifcfg-eth4 file. I tried ifconfig -a, but it doesnt show up in modprobe.conf either, although it is listed when I do a lspci. Should I manually add it? or is there something Im missing here?
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Aug 31, 2010
Running Centos 5.5 64bit. Sometimes I boot this instalation in real machine, sometimas using vmware workstation. The problem is that these environments have different network interface cards - as soon as kudzu detects that network device changed it renames ifcfg-eth0 to ifcfg-eth0.bak and places new default ifcfg-eth0.
Is it possible to command kudzu to leave ifcfg-eth0 as it is ?
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Apr 1, 2010
I'm trying to get my new Wireless USB dongle to work with Xubuntu 9.10 Karmic Koala. I've extracted the .rar file that was on the drivers CD that came with the dongle. According to the ReadMe....
The Model Name is: RT2870 Wireless Lan Linux Driver Driver Name: rt2870.o/rt2870.ko Hardware: Ralink 802.1n Wireless LAN Card Description: This is a linux device driver for Ralink RT2870 USB ABGN WLAN Card. My issues:
1. I do not see the driver file anywhere in the folder contents... I suppose that I have to "build" it.
2. In the makefile the chipset is default set to "CHIPSET = 3070" & the folder that holds all the extracted files is named 2008_1128_RT3070_Linux_STA_v2.0.1.0 so I'm confused as to whether this dongle has a 2870 or 3070 chipset inside. Does it matter?
3. Sorry, I'm a bit of a n00bster when it comes to all this, but I'm having some problems with the build instructions. It reads:
[Code]...
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Mar 30, 2010
How to tell dhcpd to listen to ifcfg-bond0 ?
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Aug 19, 2009
5.10 Breezy configured as machine controller. Works great eth0 is a fixed IP to communicate with controller comms board. Not easy at all to alter - the comms board is hard coded to listen on eth0 for commands.
I can use eth1 as the default gateway and ping google.com, etc. But when I now attempt to communicate with the controller with netcat, e.g.
Code: echo !HH | nc 192.168.1.6 80
I obviously never get an answer since the request is passed via eth1. Using the -g option with netcat doesn't work either. I had a look at iptables but it doesn't seem to be able to do what I want. How I can still use eth0 as my communication port to the controller whilst eth1 is the default gateway?
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Jul 1, 2010
I have two servers on a vlan at my datacentre/colocation and previously both servers had public IPs on their eth0 interfaces. The servers are HP ProLiant DL360s - one is a G4 and one is a G5 The newer G5 is now the LAMP server and the G4 has been retired and I want to repurpose it as an iSCSI target using openfiler freenas or similar.
My G5 has public/static IPs lashed to the eth0 physical interface and the eth1 is not configured to do anything yet. The G4 will have both interfaces available - perhaps one for ssh access from one of my static public IPs and the other to be a private IP on the local vlan. Here is what I am trying to get my head around...
The G5
eth0 - Public IP - full LAMP services on two or three virtual interfaces
eth1 - Private IP 192.168.0.1
The G4
eth0 - Public IP for ssh
eth1 - Private IP 192.168.0.2
Because my traffic between eth1 on these boxes is via private IPs on the local private vlan it doesn't add to my quota for bandwidth. How do I go about configuring the routing and gateways and other aspects of this so that I can run a private IP space network between the eth1s and still serve the outside world from the eth0s...
I am afraid that if I assign the private IPs to the eth1 interfaces the routing may either not work or interfere with the access to the production internet facing interfaces (eth0s).
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Dec 18, 2010
I'm running a dual boot Ubuntu 10.04/Backtrack 4 (Ubuntu 8.10) system. I can get internet in the BT4 side but not in the Lucid side. In Lucid I can ping my router, and the network manager says I'm good to go, but I can't get to any web sites. It all started when I tried to put my laptop on another network by mimicking the settings of a computer I had just unplugged from the network. MAC address and all.
ifconfig eth0:
Code:
eth0 Link encap:Ethernet HWaddr 00:1f:16:ba:4c:8c
inet addr:10.136.9.147 Bcast:10.136.9.159 Mask:255.255.255.240
inet6 addr: fe80::21f:16ff:feba:4c8c/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
[code]....
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May 5, 2011
I've been using the command
Code:
dd if=/dev/sda of=/dev/sdb
to copy my hard drives contents completely to another hard drive.However I need a way to copy just the files on one partition. I don't want the entire partition copied, just the files. I need the code to output them in to an ISO,
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Aug 5, 2010
I'm trying to do some network bonding in RHEL 5.4, and I'm not seeing the results I expect. I have set up a number of servers using mode 1 with no issue, but I need to configure a new server differently. bond1 is created from eth1 & eth2 bonded together using mode 802.3ad with layer2 lacp bond0 is created from bond1 & eth3 using mode active-backup with bond1 as the primary interface When I bring the network services up, all traffic is passing over eth3 instead of bond1, which is the primary. Below are the modprobe.conf * ifcfg-* files involved.
My modprobe.conf:
alias eth0 e1000
alias eth1 e1000
alias eth2 e1000
alias eth3 e1000
alias scsi_hostadapter mptbase
alias scsi_hostadapter1 mptsas
alias scsi_hostadapter2 qla2xxx
[Code].....
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Oct 31, 2010
I just installed Fedora 13 on a new Dell XPS desktop and some of the networking files are not created/missing. The computer has Broadcom Gigabit wired card and Asus PCE-N13 wireless card. When I type lspci, I see that Network conroller: RaLink RT2860 and Ethernet controller: Broadcom BCM57780 Gigabit Ethernet. So, somehow they are being detected by the OS, but I am not sure if the drivers are installed or why some of the network files are missng.
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Dec 8, 2009
NetworkManager is a powerful tool for setting up a wlan connection, especially if you connect the laptop to multiple access points. One drawback is that the user accounts must be given access to the pass
phrase. Another is that there is no wlan connection in run level 3, because nm-applet is an X application.If you connect to the same access point all the time, e.g., your own wireless router, a permanent connection via ifcfg might be more convenient. It is controlled by root. All user accounts have wireless access without knowing the underlying details. Further, there is a wireless connection in run level 3. After a lot of trial and error and Google searches, I was able to put together this guide by splicing together one step used in Slackware (from Alienbob's web page) with other steps outlined in this online article http://home.roadrunner.com/~computer...hwireless.html.
It is assumed that the appropriate kernel module for the wlan card is installed and that
$ iwconfigshows a viable wlan0 interface. We are using DHCP. (If using static IP, edit ifcfg-wlan0.)The following steps work on a Compaq Presario F756NR notebook with a Atheros AR242x 802.11abg WLAN card using the ath5k kernel module (without madwifi). I am using 64-bit F12. All commands are executed as root.1. $ yum install wpa_supplicant dhclientProbably already installed, especially dhclient. If so, skip.2. $ cd /etc/sysconfig && vi wpa_supplicantInsert the following lines:
INTERFACES="-iwlan0"
DRIVERS="-Dwext"
OTHER_ARGS="-f /var/log/wpa_supplicant.log"
[code]....
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Jan 18, 2011
I set up a bridge device but I can not figure out how to pass parameters into the ifcfg-vmbr0 in particular I need to pass:
maxage
ageing
fd and stp seems to be passed by DELAY=0 and STP=on the others? I have not found anything in the post, tips, docs how could I do?
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