CentOS is an Enterprise-class Linux Distribution derived from Redhat Enterprise Linux sources freely provided to the public.

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Open a port CentOS

I'm new in CentOS and I'm trying to create a little script in Python, something like: $ python -m SimpleHTTPServer If I try to access port 8000 in my web browser, I don't get access, however if I ...
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2answers
18k views

How do I copy a symbolic link?

I have a symbolic link to a file in one directory. I would like to have that same link in another directory. How do I copy a symbolic link? I tried to cp the symbolic link but this copies the file ...
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2answers
147 views

Monitoring outbound server http header information?

What tool / function can we use on our linux server running CentOS to monitor the http headers that are sent from our application to another application on a different server? Looking for http header ...
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2answers
7k views

Problems with CMake in CentOS 6

I try to install a software in CentOS 6.2, without success. In README file it says: Requirements: - qt4 gui lib version >= qt4.6.x Note that many linux distributions split packages into a ...
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1answer
473 views

Changing network config during CentOS netinstall

I cannot find a way to change the networking information during a CentOS netinstall, when using the URL installation method. I always use a netinstall, and occasionally fat-finger the network ...
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1answer
406 views

Intermittent ssh denial

The main server in my network (nothing less...) plays tricks with its ssh connectivity. It is a CentOS 6.4/64 (runs as KVM-based virtualization host with a dozen VMs on it). It receives its IP via ...
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1answer
395 views

Static IP config no longer persistent in CentOS6

I was messing around with KVM in CentOS 6.3 when I noticed I was having problems with the IP address of my principle network connection (eth0). I backed out my bridge and restored the network-script ...
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2answers
836 views

How to detect network connection failure?

I have a direct Ethernet connection between a Windows box and a Linux box. If I disable the connection on the Windows side Linux still seems to believe the link is up. Is this normal behaviour? I ...
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226 views

Arguments against Ubuntu? [closed]

As someone who's been using Ubuntu for a couple of years now both in production and at home, when seeking answers to certain administrative questions for my systems, I often hear the "that's what you ...
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1answer
1k views

kickstart copy file to new system

I've finished writing my kickstart file but one thing bugs me the whole day. I've searched all over the net, found numerous posts with different solutions and none of them helped me. I did a fresh ...
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2answers
4k views

Need IP for my Virtual Machine

I want to scp to my virtual machine (CentOS 6) from my Windows 8 machine. I have installed VMPlayer and installed CentOS 6 on my machine. I have enabled Bridged adapter setting, but I still can't see ...
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How to install git for CentOS?

I tried several suggestions from this answer but none of them worked. [root@308321 sugar-dev]# yum install git Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * base: ...
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1answer
497 views

Why does CentOS even with its latest release ship older versions of apps such as Python 2.6?

Why does CentOS even with its latest release ship older versions of apps such as Python 2.6? What is the reason and logic behind it?
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1answer
3k views

How do I read the output of `dmesg` to determine how much memory a process is using when oom-killer is invoked?

I asked this question: Running `sudo /sbin/service mysqld start` causes system to crash In the comments of one of the answers, a very helpful individual is asking for more information regarding how ...
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2answers
723 views

Running `sudo /sbin/service mysqld start` causes system to crash

OS: CentOS 5.10 Service: Amazon Web Services Attempted to remove MySQL 5.0 and install MySQL 5.6 I had a server set up, and was going to use MySQL, but it was was set up with MySQL 5.0. Since ...
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3answers
2k views

How to install easy_install using non-default Python Interpreter on CentOS?

I have downloaded, compiled and installed Python 2.7 on CentOS. I would like to download and install easy_install (and pip) for it but I am a little bit confused as to how to do that. How can I ...
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0answers
351 views

CentOS VPS not starting after installing zPanel

I've had some trouble earlier installing zPanel, but then I was told that I've been using the wrong package, I was supposed to use the 32-bit version, but kept trying with 64-bit. After figuring that, ...
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2answers
610 views

Nameservers setup in CentOS 6

I have a domain registered externally from where I have my VPS, but I need to connect these two in order to have the domain forward to my host. I know that I have to take my host's nameservers and ...
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1answer
163 views

Upgraded from CentOS 6.4 -> 6.5 and now permissions do not seem to work properly?

I allow my non-root user the ability to view my nginx access.log. I upgraded from CentOS 6.4 to 6.5 and now my user cannot view this file but the permissions still look correct. I removed and ...
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3answers
730 views

Software RAID 1 with dissimilar size and performance drives

Background I was experimenting with a home server setup in a small box I had that was supposed to be a media centre but never found much use. I installed CentOS 6.5 in a software RAID1 configuration ...
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0answers
425 views

how to set up ldap and trac

I have set up kerberos authentication with trac which works well. Now I want to use AD groups and users for trac permissions using the trac plugin Configuration for LdapPlugin. I have been following ...
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1answer
186 views

trac svn python bindings messed up rebuild python

My trac and svn used to work it still does if i click on the links many times. How ever it complaines of he followign and i am not sure what to do i have followed ...
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2answers
313 views

Configuring CentOS apache server to default to a specific port for ExpressJS and Node

Completely new to Linux and virtual private servers so please bear with me. I have a webapp built on ExpressJS and NodeJS that runs on port 5000 of my server, accessible via web by typing: ...
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1answer
362 views

How to debug a device that changes from /dev/ttyUSB0 to /dev/ttyUSB1 at will?

I have a device plugged to a CentOS server that changes randomly from /dev/ttyUSB0 to /dev/ttyUSB1 and vice versa. The device I'm trying to connect is this one. How can I debug this?
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1answer
5k views

How to troubleshoot No Sound on CentOS 6.4 w/ USB headset?

Have a new Dell machine with a fresh install of CentOS 6.4. I have a headset hooked up via USB, but no sound. I'm not sure CentOS is recognizing my sound card -- or maybe it's not recognizing the ...
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3answers
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install minimal desktop on CentOS 6.3

I just want to install a minimal GNOME desktop without all the Thunderbird/Firefox and any other packages that may come with full CentOS Live Cd. Is there something like yum groupinstall base-desktop? ...
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583 views

CentOS memory allocation

I was running my VPS with CentOS on 1G memory, but I saw the memory was getting "full" so I had 1G extra installed. This VPS is one I rent at a hosting company. That company did most of the ...
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3answers
14k views

How to know CentOS version?

How to know version of a CentOS server without access to any graphical interface? I've tried several commands: # cat /proc/version Linux version 2.6.18-128.el5 (mockbuild@hs20-bc1-7.build.redhat.com) ...
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1answer
75 views

What is transaction check in Yum installation

What is the "Transaction Test" that will be done during installation using yum? Please explain with details..
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2answers
4k views

Where is the error page location of squid proxy server?

I'm using squid proxy sever on my ubuntu 12.04 LTS. Where is the error page location so that I can customize it..
2
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1answer
4k views

MySQL permission denied error even after setting security context for SELinux on VM

I have MySQL installed on CentOS (detail versions given below). My OS is a VM machine and not a physical machine, the directory /data/mysql is a local disk (virtual). I suspect I might need to do some ...
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2answers
603 views

Commands for determining level of usage of server

I am scripting a new program that will connect to a cluster of machines in a VM park, and hopefully check their level of usage. The VM clients are a combination of RHEL and CentOS, and runs on ...
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138 views

how to install yoono-desktop?

Just now i download yoono-desktop from http://www.yoono.com/desktop_features.html.While trying to install this app it showing error [root@localhost mpatil]# yum install yoono-desktop Loaded plugins: ...
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1answer
378 views

iptables - why the stun, turn ports are not working to allow end points to access the server?

I have this iptables where all working except tcp/udp port 3478 and 5349. $ cat /etc/sysconfig/iptables # Generated by iptables-save v1.4.7 on Thu Nov 21 10:21:41 2013 *filter :FORWARD ACCEPT [0:0] ...
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1answer
102 views

foomatic-configure producing weird perl warnings

I am using CentOS 6.4 and trying to use the 'foomatic-configure' for print information and am receiving some weird errors: Perl: v5.10.1 foomatic: foomatic-4.0.4-1.el6_1.1.i686 Command line: ...
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1answer
1k views

CentOS 6.4 Kickstart bootloader problem

I am installing CentOS 6.4 via a kick start file that looks like this in my build: # install the bootloader (GRUB) bootloader --location=mbr --driveorder=sda --append="crashkernel=auto" After the ...
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Configure Cent OS 6.4 so that desktop persists after closing VNC session?

I want to configure my newly bought VPS to be able to automatically boot into the Xfce window manager and let users connect to it via VNC and still keep the window manager running after the user ...
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1answer
2k views

Where are the CentOS 6.4 documents?

I'm only able to find up to version 5 on CentOS.com: http://www.centos.org/docs/ Even though CentOS 6 was released back in mid-2011..
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1answer
133 views

Is it possible to have a seperate firefox profile for root?

There's a shared office PC that employees can use to surf / look up information on, etc. There are times when it would be convenient for me to use the same PC to check my email / log into secure ...
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1answer
1k views

How to setup SVN over VPN?

I'm looking on how to implement a SVN connection over a VPN on my CentOs server. I need to see up this VPN to work with the team in the office from outside. required packages ( yum ... ) ...
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1answer
302 views

How to rebuild /etc/cron.d on CentOS?

I installed an RPM on a CentOS machine that was supposed to merge its own files contained in a /etc/cron.d structure with the current /etc/cron.d. However it replaced the current contents. I believe ...
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1answer
879 views

Centos 6.4. building rpm for cups 1.7

I try to build rpm from source by running rpmbuild -ta cups-1.7.0-source.tar.gz --without dbus but get Processing files: cups-1.7.0-1.x86_64 error: File not found: ...
3
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1answer
2k views

Granting access to a restricted git shell

I tried setting up git-shell on our CentOS (6.4) system (after getting this working correctly on Ubuntu 13.10, maybe cross platform hot mess?) my /etc/passwd shows git:x:500:500:Web Archive ...
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2answers
2k views

Telnet login prompt very slow on Static IP only, possible rDNS issue?

I've switched my CentOS machine from DHCP to static routing, using telnet to connect to it has gone from practically instantaneous, to taking around 30 seconds for the initial login prompt to display. ...
3
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2answers
568 views

Attach terminal to X desktop running in VM

At home I'm setting up a CentOS 5.5 server that will be running a bunch of KVM VMs. Normally pressing the CTRL-SHIFT-Fn combination on the attached keyboard switches to terminals on the host machine. ...
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2answers
941 views

SSH will not make a local connection without password prompt

While trying to set up a loop back ssh I am getting prompted for a password after a pub key install, this is a CentOS 6.4 server. ssh_config (grep -v ^# /etc/ssh/sshd_config | grep -v ^$) is here: ...
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1answer
742 views

Command(s) to install tempfile on CentOS 6.4

I'm looking to install the package for tempfile but am not finding it? possibly use mktemp but I'm not sure if there is a difference in behaviour besides a dot notation in the temp name? $ tempfile # ...
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2answers
2k views

How can I disable TCP/IP for an Ethernet adapter?

I have CentOS 6.3 running in a (virtual) machine with two Ethernet adapters. I have eth0 connected to a TCP/IP LAN and eth1 connected to a DSL modem. The system is intended as a dedicated ...
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2answers
7k views

GLIBCXX 3.4.15 on Centos 6

I need to install GLIBCXX 3.4.15 on my Centos 6 version (to run a server for a game on Steam). I've googled around and had several websites where they installed programs where the error appeared where ...
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1answer
504 views

mount: special device /tmp/cdrom does not exist - CentOS kickstart %post section

I am upgrading an installation from CentOS 5.5 to 6.4. I am having troubles with my kickstart file in the %post section while mounting /tmp/cdrom during the install: The following configuration in ...