CentOS 5 :: Install 5.4 64-bit On A Server With Two NICs?
Dec 28, 2009
I am trying to install CentOS 5.4 64-bit on a server with two NICs, one of which allows for iSCSI boot. I want the NIC that allows for iSCSI boot to connect to the iSCSI target on my 169.254 subnet. I want the other NIC to be connected to my 192.168.1 subnet so that it can reach the Internet for the CentOS Network Install.
Anaconda only configures one NIC, leaving me with an iSCSI target and no Internet or with Internet and no iSCSI target. Is it possible to configure both NICs in Anaconda?
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Mar 31, 2011
configuring DHCP server with two NICs. I need DHCP server with 2 NICs:
eth1 - 192.168.103.11
eth2 - 192.168.123.11
The client also has two NICs and suppose to receive ip addresses eth1 from 192.168.103.0 and eth2 from 192.168.123.0 Here is the dhcpd.conf from dhcp server:
ddns-update-style interim;
authoritative;
ignore client-updates;
[code]....
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Jun 14, 2011
I just installed CentOS 5.2 on a mini Atom server and it wont recognize the nics. Not sure what kind they are, think they are Intel. (built in)It's the first time this has happened to me. Where do I start to get it to recognize the nics? Normally it works out of the box.
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Jan 7, 2011
I have two NICs and both having different IPs and Default Gateways. Now CentOS by default picks only one default gateway and puts entry in routing table (route -n). I want to keep both default gateway in active mode to achieve redundancy. For example if traffic enters through eth0 then it goes out using default gateway of eth0 and if traffic enters from eth1 then it goes out using default gateway of eth1. I use command route add default gw 192.168.0.1 netmask 0.0.0.0 dev eth2 then both default gateways becomes active. Now I want to make sure that when server reboots both default gateways are setup. For this I wrote shell script/sbin/route add default gw 192.168.0.1 netmask 0.0.0.0 dev eth0/sbin/route add default gw 192.168.0.10 netmask 0.0.0.0 dev eth1I am calling this script via /etc/rc.local but it doesn't work on boot time however once server is booted and I execute script (sh script.sh) then it works fine.
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Mar 30, 2009
I have a motherboard which has 4 x 1Gbps Ethernet controllers. I would like to use it as a Gateway for my home network. I have a static IP from my ISP which I can use to configure eth0 (I haven't done it yet as the LE-565 is currently sitting behind my Netgear router until I've got DHCP working). I would like to use eth1, eth2 and eth3 for my LAN. How do I set things up so that DHCP is handing out IP addresses on the same subnet (192.168.0.0/24) on all three interfaces?
P.S. I think what I'm asking is: how do I combine all 3 interfaces to behave like a switch (ie. just like my Netgear router)?
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Jan 18, 2010
I have a Proliant DL 120 G5 with CentOS 5.4 and I have installed a Brodcom Corporation Netxtrem BCM 5722 Gigabit Ethernet PCI. So I have two interfaces: eth0 broadcom eth1 Intel The eth1 works, instead eth0 don't work. I can ping itself and 127.0.0.1 but I can't ping the gateway. The results of netstat -nr is:
[code]....
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Feb 23, 2010
My setup is as follows:
eth0 - lan ip
eth1 - WAN ip
I have installed a sip server on the box. From the box I would like to access machines on wan and lan. First of all, is it possible? If yes, I have setup up the nics with default wan gateway. However, when I try to ping wan url, no response. Are there other things I need to do to accomplish this?
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Jul 19, 2009
Just something that struck me while working on our virtual servers today.
I have bonded 3 NICs at the host in Ubuntu Server 8.04 LTS. They are using mode 0 for Round-robin. Point is to increase the speed/performance of all the servers, but mainly the fileserver. The fileserver is a virtual server running Ubuntu Server 8.04 LTS on VMware Server 2.0.
1) I noticed the NIC in the slave OS reported link speed as 1000 and Im unable to change it as the NIC (virtual one) doesnt support it. Does this not really matter, as the NIC doesnt exist, and it will run at higher speeds anyway? Or do I have to remove the bond on the host, bridge all 3 interfaces from the host to the slave OS, and then make a bond in the slave OS?
2) While at it, does mode 0 only increase performance on data being sent from the host or does it also increase the available incoming bandwidth?
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Dec 8, 2009
I have a program that attaches to an interface. I can run two copies of the program on two systems (each running one instance), connect it to a switch, say 1.1.1.1 & 1.1.2.1. In this configuration two instances of the program can communicate and everything is fine.
Now, to reduce cost, it want to use only one system with two nics connected to the same switch, running two instances of the above program, each instance attached to two interfaces respectively on the system. I have the following settings:
eth1 Link encap:Ethernet HWaddr XXXXXXXXXXXXXXX
inet addr:1.1.1.1 Bcast:1.1.1.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
eth2 Link encap:Ethernet HWaddr XXXXXXXXXXXXXXX
inet addr:1.1.2.1 Bcast:1.1.2.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
[Code]...
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Nov 9, 2009
I have configured CentOS 5.4 as a router/firewall (iptables) as such, and it is working fine:
eth0 - Public IP/Intenet, DHCP
eth1 - 192.168.0.0 internal "net1"
eth2 -10.0.0.0 internal "net2"
I want to add a fourth NIC, eth3, which will be assigned its own Public IP/Internet address (thru DHCP; my ISP provides two). The purpose it to route all net1's internet-bound traffic through eth0, and all of net2's internet traffic to eth3. This allows me to use one router/firewall machine instead of two separate ones. I anticipate that without some specific routing instructions, the default route will be eth0 for all net1 and net2 internet traffic (eth3 will be ignored).
I thought of using just one NIC (eth0) but create an alias (eth0:0), but IPtables (and possible DHCP) can't differentiate between the two (besides, nics are inexpensive). Is there a way to do this through routing commands, or even use iptables prerouting/forward functions (or is using iptables problematic)?
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Apr 4, 2010
I have a whitebox server with three network adapters, two gigabit adapters using the intel 82573V chips, and an intel pro/100 adapter based on the 82562 chip. These are embedded on an MSI motherboard. None are passing traffic.I initially booted the box using a Knoppix 5.0.1 CD, and the NICs worked fine. When I installed CentOS 5.4, no joy.Interestingly, Intel recommends the e1000e driver (which I am using), but the Knoppix CD used the e1000 driver. Anyway, I pulled an updated e1000e driver from elrepo,installed it, and verified that it was in use with 'ethtool --driver eth2', and the correct driver/version was displayed.
Symptoms are no traffic passes, rx/tx packet counts in ifconfig are both 0 (no errors, either). Routing table looks fine; three routes: one for 169.x.x.x, 172.16.x.x (my subnet), and one for 0.0.0.0, all destined for eth2, and all up. When I ping 127.0.0.1, and the local adapter address, I get good replies. As soon as I ping a remote host on my subnet, I get 'Destination host unreachable'. Now, at one point, I actually got it to work. I applied a small patch from Intel to change a value in the EEPROM, rebooted as instructed, and the adapter came up and passed traffic. I did a 'yum update' to update my packages, and shortly thereafter, everything stopped working again.
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Mar 19, 2011
i have a Server, which has 2 nics installed. Each of those is connected to a router, which is connected to internet. On the server, i have apache, maillserver and im-server running. On the other hand, also squid, dansguardian and clam are running. so now: via eth0 i would like to have just the traffic, which is requested from outside (the big bad internet..) to my server (apache, mail, etc). via eth1 i would like to have all OUTGOING (also to the big bad internet) from the server, which is requested by a internal client. And of course all requests to my own server
both nics shall route their traffic to their own router. For better comprehension please consult the enclosed graph. Until now, i did not find a good solution, the default route is set to the traffic from eth0, if not, no external request will find back to a client do you have a idea how to handle this the easiest way?
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Aug 3, 2010
I am currently investigating channel bonding for rhel5.5.Is there any way I can create one bond from nics on two different linux machines.They will be a cluster without any clustering software like beowulf or LVS.There will be a cluster interconnect through which they can communicate.Should I tweak the bonding module??
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Aug 18, 2010
I have a clean installation of Ubuntu Server 10.04 x64 on an HP Proliant DL380 G3. It has two Broadcom NICs in addition to its ILO. During the installation, both NICs were listed... but neither was able to pull DHCP, nor did they function with manual settings. The first NIC is currently connected and is known good. So I left it alone and figured I'd troubleshoot it later (which is now). This server is going to be a VMware Server host. I wanted to install ESXi on it, but it doesn't like the old server's cheap ICH RAID controller.
[Code]...
I noticed here it says they're disabled. so I thought perhaps this was a 64-bit driver issue. So, I booted my trusty Ubuntu desktop 10.04 32-bit live cd, and the NIC works fine. Now, here's where it gets weird. Seeing that, I booted it to Ubuntu server 10.04 32-bit installation from a flash drive, expecting to see the NICs working fine during the installation.
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Nov 27, 2009
I am trying to setup a HP blade (BL460) server with 2 nics on sles10sp3. I want one nic to connect to a management vlan and and second to connect to the standard network. It should be possible for a desktop in the standard network to connect to either nic by providing the correct ip address.use this server as our first virtualisation hosts server using Xen. I dont want traffic used to upload / download images to the server through nic1 to effect the users traffic on the standard network on nic2. However any attempt at routing (which Im not good at) has led to the tx traffic all going out the default route (users subnet).
Each time I setup the nics via yast2 lan I can get the standard lan nic working ok. but cannot get the management nic working correctly. The server can ping a workstation on another vlan, but the workstation cannot ping the management nic. The default route appears to be forcing all traffic on the host out through this route, which I presume is normal behaviour. Using tcpdump I can see the ping packets received by the server, the server then responds through the default gateway, which the workstation does not see.
However, this normal behaviour will result in extra traffic on the users network when image downloads are initiated from the management interface.If I use a 172.24.1.0 network routed through 172.24.1.1 router setup as our management vlan , and 200.200.1.0 with router 200.200.1.1 as our lan for general users. Where server ips are nic1 10.1.1.10 and nic2 200.200.1.10 My workstation would be 200.200.1.10. If I ping the server at 10.1.1.10
I get no response. If I ping the server at 200.200.1.20 no problem.
Basically I used the network setup recommended by vmware to manage a virtual server. I actually have 4 nics, I thought by just talking about 2 nics the problem would be easier to explain. vmware specify that two nics should be used for management and two for the Lan. This is what I am trying to achieve, but both subnets must operate independently.
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Apr 16, 2010
I recently set up a new web/file server with 9.10 server x64 with 2 NICs and I am trying to configure eth0 to respond to my LAN for internal samba filesharing and eth1 to handle website/ftp requests on my static IP, but whenever eth0 is up the server is not accessible at 173.XX.165.65 for web or ftp but both work fine at 10.1.10.100. When eth0 is down, public IP works fine. I have set /etc/network/interfaces like this:
Code:
# The primary network interface
auto eth0
iface eth0 inet static
address 10.1.10.100
[Code].....
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Nov 25, 2010
I have installed Ubuntu 64 10.04 server. I have two nics and have set them up to both be static with their own IP with the correct gateway, network, broadcast, subnet and dns-nameserver. When I have both enabled, I can ping local pc's but I can't ping Internet sites like Google nor can I get out to the Internet with apt-get or Lynx.
If I disable one, then I am able to get out to the Internet. All my configs look good, and it does not matter which one I disable, just so long as there is only one NIC on, everything is good.
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Jun 16, 2009
I have a CentOS 5.3 box with three network interfaces in it. Each interface is attached to a separate VLAN and I want traffic to stay on each network segment.What I can�t figure out is why I cannot get each interface to have its own gateway and everything gets sent through the default gateway.The basically takes my possible 3Gb total bandwidth and throws it down a single 1Gb pipe.Then on top of that, if I take down the interface (ifdown) that has the current default gateway,I loose contact to the other two interfaces.When I look at the routes, each one of the interfaces shows the gw as 0.0.0.0 and defers to the default route. So I delete the route and try to add a new route with:
[root@testsan ~]# ip route add 10.1.15.0/24 via 10.1.15.1 dev eth2
but end up with the error:
RTNETLINK answers: Network is unreachable
[root@testsan sysconfig]# cat network
NETWORKING=yes
NETWORKING_IPV6=no[code].....
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May 3, 2009
I have tried to install debian 5.0 and 4.0 without any luck. I have both tried virt-manager and virt-install with both debian-501-i386-netinst.iso, and full dvd. I't always gives me the same error:Starting install.Could not find an installable distribution at '/xen/debian-501-i386-netinst.iso'
[Code]...
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Jul 1, 2010
I've been trying for the past week to install an icecast server on my centos 5 VPS hosted through phurix.
I've tried compiling it, installing it from RPM. but im getting nowhere. Has anybody had any luck installing it, who wouldn't mind explaining how they went about it?
I've searched google for hours on end and all I can come up with is generic cent os 4 guides that just wont work. Im not the best when in comes to linux. I do a great job of copying and pasting to a shell prompt and can use ftp etc.
if this is any use.. heres the last output from my last attempt and compiling it...
[root@vps613 icecast-2.3.2]# ./configure --prefix=/usr/local/icecast
checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking for a thread-safe mkdir -p... /bin/mkdir -p
checking for gawk... gawk
checking whether make sets $(MAKE)... no
[Code]...
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Nov 6, 2010
I have an i5 Thinkpad running Windows 7 64-bit. VT is enabled in the BIOS. I have installed vmware server v 2.0.2 but am unable to install Centos 5.5 x86_64 as a guest OS. The steps that I followed are as follows:1. Created a new VM, specifying RHEL 5 64-bit as the intended guest OS (per vmware documentation - Centos is not available as a selection2. Downloaded all 8 iso files for Centos v5.5 64-bit3. Modified the CD/DVD drive to 'connect at power' and use an iso with the path pointing to the x86_64 iso 1 of 8When I power up the VM, the console window displays 'ISOLINUX 3.11 2005-09-02 Copyright (C) 1994-2005 H. Peter Anvin' and nothing else. The installation splash screen never appears. As a test, I downloaded the first of 7 iso files for the 32-bit version of Centos 5.5 and pointed the CD/DVD drive to that iso. In that case, the installation starts as expected. I would really like to get the 64-bit version installed and running.
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Jan 14, 2010
What i want to be able to do is create a custom kickstart for my centOS 5 server. I want to create a bootable cd that I can pop in my server and basically walk away for 45 minutes and I come back and its fully installed. All the directions I have read so far tell me that I have to create a seperate ks.cfg and then I need my original centos cd to get it booted. Then the cd will ask for where the ks.cfg file is and I have to type the location. I just want to pop the CD in and type in linux_clean or something and have it perform a custom install based on the information and specification in my ks.cfg. How can I go about doing this?
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Dec 31, 2009
somebody please tell me whether it would be all right to install xp inside CentOS using VMware or it's better to do vice versa if it is ok to install xp inside centos then at the beginning when i install centos should i allocate all hard disk to this OS and later give some to xp , or initially i should keep some space for xp and install centos in the rest ?
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Jul 7, 2010
I would like to replace default OpenSSH version 4.3 with latest one (5.x). New version do support SFTP chroot, which is something I need.Of course, it can be compiled from source, but it is worst possible option for maintenance, since I do have few servers. Does someone provide RPMs or source RPMs at least ? If yes, what is repository/URL ?
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Oct 28, 2009
I've got a new server machine: Fujitsu-Siemens PRIMERGY TX150 S6.
I've tired to install CentOS 4.4 linux from DVD. This DVD is OK, because I installed from it a couple of days ago. Installation process starts but after some steps it gives me something like this code...
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Feb 18, 2010
I try to install SSMTP mail server on Centos 5.4 and I have a following error >>
[Code]....
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Mar 4, 2010
Does anybody have any documentation or can assist with any sort of steps on how to install a SSO server on Centos 5.4.We have just over 150 Centos servers country wide and we would like to implement an SSO server to manage the users and their login credentials locally and centrally.
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Jun 5, 2011
I'm trying to setup local LAMP installation of CentOS 5.6 in VMware for local developing. I installed Apache, PHP, phpMyAdmin from this tutorial. Is there any other begginers step-by-step tutorial for setting up LAMP? I need help setting up FTP and permissions, hot to setup permissions for /var/www/html directory?
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May 10, 2010
Is it possible to install two NICs during an installation from CD? I tried and failed yesterday. The eth0 would have a static ip address 192.168.0.11 and would be used for Internet/network whereas eth1 would have a static ip address of 192.168.2.81 and would be used for connection to the ISCSI system (DROBOPRO). Oh yes, it's Ubuntu 10.04 Server version.
Install asks me to choose one of the two devices for configuration - I tried to be clever and set up one then the other but it didn't work, although the ISCSI subsystem was clearly working when I set up eth1 because the DROBO kicked into life as soon as I entered the IP address - communication was taking place. Thinking that my fudge had worked, I continued to complete the installation only to find that neither network interface worked on reboot.
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Aug 28, 2010
when i do a paravirtualised install coz fully grey out (how do you get round this) and ftp install path is ftp://192.168.1.1:65354/bie764.iso
i get error:
Unable to complete install 'exceptions.ValueError Invalid install location: Opening URL ftp://tj:tj@192.168.1.1:65354/bie764.iso failed.
Traceback (most recent call last):
File "/usr/share/virt-manager/virtManager/create.py", line 724, in do_install
dom = guest.start_install(False, meter = meter)
[code]...
does it not accept ftp passwords.. what ftp server program (with autostart so it works with crossover linux as i know no other way start apps with that. can try to insta wine but need rpm) will work
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