Networking :: CentOS/RHEL Small Network Configuration?
Jan 14, 2010
I want to create a small network of 3-5 computers. I want to have one computer as my server and have services like NFS, DHCP, NTP, etc. I want to connect it to 2-4 other clients that have the bare minimal installation of linux on them. I would like 1 client computer to have a static ip address and I would like another to receive a dynamic ip address from the server. How would I go about doing all of this without the assistance of GUI's? I want to be able to do all this with the ks.cfg and network config files.
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May 27, 2010
issue in starting up Open view monitoring on couple of linux servers and here is the output from mii-tool looks like.
eth0: 100 Mbit, full duplex, link ok
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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Apr 27, 2010
setup my static network connection Here are my details :
IP : 172.16.152.137
Subnet : 255.255.255.192
Gateway : 172.16.152.191
Primary DNS : 172.16.0.1
[code]....
but after this setup when i restart my network #service network restart while bringing up the eth0 the following message is displayed before [OK] - RTNETLINK answers : Invalid Argument now it seems either this setup is wrong or not sufficient to set up the connection, whenever i try to ping 172.16.0.1 it showing connect : Network is Unreachable
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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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Oct 12, 2010
I installed RHEL 6 Beta 2 on ESX box and found that network is to be manually started through ifup command.
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Jan 28, 2009
We are in the process for Integration Network with our Government Network.
Let say that our network are 192.168.0.0/24
And the Government network are 10.0.0.0/8
I want to know if the local network can resolve the internet names in Government Network. I am using Bind for DNS.
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Jul 8, 2010
I have a webserver to host some system application to the public. the server have two network interface. I set eth0 with wan IP and eth1 with internal LAN IP.the reason for the internal ip on eth1 is to enable LAN pc directly access to the webserver application..is this configuration is ok. sometimes the server link down and i have to restart network to get it back to normal again.. Is there any additional configuration in order to make the network stable.
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Jan 19, 2010
What I want to do is have two different networks connected with my switch. I want one computer to be the server and run dhcp with the ip address 10.3.2.1 and I want the other client machine to be 10.1.X.X. I want the X.X to be assigned automatically from DHCP running on the server. The subnet mask I believe should 255.255.255.0 for both networks. How can I get these two different networks to talk to each other when they are on completely different networks??
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Feb 23, 2010
I am trying to see if there is an authbind equivalent or authbind package for CentOS/RHEL? x If so, where can I get more info and download it? It seems to be only available for Debian and Ubuntu.
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Feb 1, 2011
We are planning to migrate our LINUX server from RHEL 3to RHEL 5. What are the configuration difference between RHEL 3 to RHEL 5 for webserver installations?
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Jul 28, 2011
our client their is one RHEL 2.4.21-27.EL
some tine request timed out comes. how to identify the fault.
Reply from 40.50.25.60: bytes=32 time<1ms TTL=64
Reply from 40.50.25.60: bytes=32 time<1ms TTL=64
Reply from 40.50.25.60: bytes=32 time<1ms TTL=64
[code]....
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May 19, 2010
My DNS server is baring 192 series IP for ex: 192.168.10.100, need to configureloadbalancer IP in that DNS server, where loadbalancer is baring 172 series IP. for ex : 172.56.67.19.is it possible to cofigure the loadbalancer ip in DNS server? if it is, please let me know the configuration details and procedure.
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Mar 12, 2010
I have a problem where l am builing RHEL 5.x servers and during the install it asks which network card you want to boot from. My servers all have 4 NICs in, broadcom. I am booting from a PXE server which runs the anaconda installer l have tried editing the kickstart files and also the pxe cfg file with various options, but have had no luck so far.
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Feb 16, 2010
A client has sent me an RHEL 5.1 box for me to do some work on, but it's not registered with Red Hat. This is causing me problems, because it's a minimal installation, and I need some more dev software.My immediate reaction was to install various bits (emacs, and so on) from my Centos 5(.0) DVD.The base RHEL system only had one (disabled) repo entry,so I added a yum DVD repo entry in yum.conf.d.
This looked good to start with, but it doesn't work. Something in RHEL's pirut/yum/rpm/whatever is getting confused, and can't work out what is/isn't installed.
Question - how do you maintain an unregistered RHEL box? Has RH done something to make life difficult? Is my problem simply that I'm using a Centos 5.0 DVD, instead of Centos 5.1? Am I stuck with downloading lots of rpms from the net and doing everything manually? I really don't want to do that.
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Aug 26, 2009
Does anyone know where I can find RHEL compatible rpms for Bind 9.7 and DHCPD 4.1?
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May 25, 2010
Cannot activate network device eth0!"device eth0 does not seem to be present, delaying initialization".i cannot find my network card while i set up network configuration Now I use dual boot window 7 and fedora 9,I cannot find my network card in select network adapter while network configuration ,i have a network card Atheros AR8132 PCI-E fast Ethernet controller NDIS(620)and for wired in Accer laptop .
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Oct 10, 2015
The "System Settings/Startup Programs" window is large enough but the "Program" column is too narrow and it cannot be resized. The window can be dragged to make it larger but not the individual columns. It looks like a Java listbox with "Enabled = false" set. This occurs in Debian8 64 bit and also in Mint 17 and Mint LMDE2. I am surprised nobody else has raised the issue. I have a basic setup with 22" screen and 1680 x 1050 resolution. It occurs with Nouveau and NVidia drivers. It is not a critical bug so I have coped with it for 2 years but it would be nice to see it fixed. Unfortunately I could not upload a screen shot as "board attachment quota has been reached".
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Apr 5, 2010
I'm trying to set up a small web server with php and sqlite support. I installed lighttpd, php5, php-sqlite3 and php5-sqlite3. Then, I enabled sqlite and pdo extensions in php.ini:
extension=pdo.so
extension=sqlite.so
extension=pdo_sqlite.so
However, when I try to open a SQLite3 database from php:
$database = new SQLiteDatabase($myDB, 666, $error);
I get the following exception:
SQLiteDatabase::__construct() [sqlitedatabase.--construct]: file is encrypted or is not a database
Some readings in the net make me think that my php settings are not compatible with SQLite3 databases. Is anyone successfully working with SQLite3 databases from PHP5 under Debian? Have you any recommendations? Should I rebuild php maybe?
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Sep 27, 2009
I am demo'ing Kubuntu 9.04 workstation to a customer. He has a CentOS 5.3 server (my doing). On it is our CUPS Network file server. Everyone (65 of them) print to our network printer through it using LPR/LPD (and sometimes Samba).
Problem: when Kubuntu's Print Configuration Tool went looking for printers, it found every network printer's IP address, but missed my CUPS printer server. What did I do wrong on one or both ends (I have control over both).
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Sep 23, 2010
I have a small lan network. I known the passwords of all and I want to scp a file to all and I don't want to give password each time. Is there any way for that through writing script.
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Nov 23, 2010
I have an old scanner script that uses pamthreshold to create a small greyscale image of a text document. This program does not seem to be available in debian. Can anyone tell me how I can install it, or if there are any better alternatives available?
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Oct 5, 2010
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
DEVICE=eth0:1
BOOTPROTO=none
NETMASK=255.255.255.0
IPADDR=192.168.122.9
[Code]...
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Aug 12, 2009
I am attempting to setup a network to network VPN tunnel between our main office and a temporary location. This location need full VPN access back to the main office's network.Anyhow we have spent about 3 solid days attempting to make this work without any great success. Here is our network scheme for these two devices.
Network A (Main Office) (OpenBSD using isakmpd)
Network: 172.16.8.0/24
External IP: 1.1.1.1 (obviously not the real IP)[code].....
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May 12, 2009
I have installed CentOS 5.3, and updated with yum update. I have kernel 2.6.18-128.1.10.el5xen.
I can't get my wirelss network to work, I have AR928X wireles network adapter.
Do I need to install a newer kernel and install ath9k or can I just downlad a driver without updating the kernel?
I'm new to CetOS and Linux so I hope someone kan give me a step by step guide to what I can do!
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Aug 25, 2010
I just upgraded from Ubuntu 9.04 64-bit, to CentOS 5.5 64-bit and my RT-73 USB network card doesn't seem to want to function. It always worked fine in Ubuntu by default (plug and play). Is there some setting I need to make to get this working?Even BT-3 (which is quite old) recognizes the RT-73.
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Jun 4, 2010
I'm looking for a program that I can use to keep track of how much bandwidth goes to the various computers in my small network.All of the bandwidth goes through my squid server, so the easiest would be to just have a program that can accurately analyze the squid logs and tell me how much bandwidth is going to the different computers.I've tried both "bandwidthd" and "calamaris" I can't figure out how to get either one to actually do anything in Ubuntu.
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Feb 1, 2011
There have been plenty of occassions when I've needed to setup a RHEL or CentOS box to act as a NAT router / firewall, and I am able to do this fairly easily by enabling ip_forwarding, and setting up a couple of iptables FORWARD rules and a nat rule.
However, what I'd like to do now, sounds in theory like it should be simpler, but I seem to be having a mental block and all of my searches pull up results about people playing around with LinkSys routers and so on.
Let me give an example scenario. Let's say I have two subnets, A and B. A has the IP range 10.0.1.0/24 and B has 10.0.2.0/24.
I have my RHEL box, with two NICs. One is connected to subnet A and has the IP 10.0.1.1/24, the other to subnet B with the IP 10.0.2.1/24.
All I want to do, is make clients on each subnet be able to talk to each other via my Linux box.
No, NAT'ing, no firewall rules, just straight up, good old-fashioned routing.
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Aug 24, 2009
I need to setup a small VPN server for about 20 people. Will a VPS with 192mb ram be enough to handle this? The only services I need to run is those necessary for VPN.
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Jul 2, 2010
How to configure DNS server for my small network. In Fedora Linux operating system I want to use Linux as a DNS server for my small office. there are files " /etc/hosts" and "/etc/resolv.conf ".
what is the purpose of these files and in which situation we use these files? For configuring a new DNS server. how can i configure my own DNS server for my small office? Any blog or site in which they show steps to configure DNS server.
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Aug 31, 2010
We are slowly migrating from a predominantly Windows house to a 50/50 Win/RHEL operation and even further in the future.Currently, we have a LOT of Windows folders that are created by custom applications which, upon creation of a new folder set, applies the corresponding ACL so that only the associated groups are able to access the folders. Now for the problem, we are migrating the applications to a RHEL55 environment and it is creating the folders on that system now but the groups are still residing in the Windows AD. Is there an "easy" (I know, a very relative term) to have the Windows groups given permission to the Linux shares without very much manual intervention?
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