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

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X11 connection rejected because of wrong authentication — on CentOS, for all users (including root)

I'm configuring a small computing cluster with CentOS. The last step is setting up X11 forwarding, and here I find problems that I cannot solve. On all compute nodes except one, I can set up ...
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276 views

CentOS: FTP (vsftpd) Error 530

I struggled my way into setting up FTP on this VPS and I can not get the accounts to work. I did adduser passwd but I get this error in filezilla Response: 220 (vsFTPd 2.0.5) Command: USER Main ...
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1answer
69 views

CentOS, Apache Vhosts enabled,but DOCUMENT_ROOT cant towards /home/auser/website/www1 [closed]

environment CentOS 6.5 x86_64 Apache2.4.9 (locate=/usr/local/apache2) PHP 5.5.13 (locate=/usr/local/php5) Apache vhosts enabled. site1 domain=localhost ...
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4answers
1k views

Alternative for “locate” on debian

I often use "locate" command on CentOs to find files. What's the alternative for this command on Debian ?
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2answers
107 views

NFS: share with all clients except one

I want to share a folder with all the network's clients except only one. This is my current /etc/exports file: /opt/resources *(rw,async) What should I add to prevent the client 192.168.1.24 ...
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1answer
859 views

Crontab does not run?

crontab -e 0 */4 * * * root /usr/bin/rsnapshot hourly 30 3 * * * root /usr/bin/rsnapshot daily 0 3 * * 1 root /usr/bin/rsnapshot weekly 30 2 1 * * root /usr/bin/rsnapshot monthly tail ...
2
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1answer
2k views

Can't run yum update

I've been banging my head on the keyboard with this! I'm working on CentOS 6.5 x86_64. Firstly I tried to update php and apache using easy apache. The update failed very quickly so I went on the ...
2
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0answers
119 views

Matterhorn dead but PID file exists

Installed opencast-matterhorn14 in a Centos 6.5 Machine and after Installation steps while I try to run the Matterhorn using service matterhorn start I keep on getting the same error: ...
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1answer
1k views

SELinux preventing ssh via public key

I have user $USER which is a system user account with an authorized users file. When I have SELinux enabled I am unable to ssh into the server using the public key. If I setenabled 0, $USER can now ...
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3answers
120 views

How to manage installed from source programs?

I have servers (with Debian or Centos) and I would like to install programs from sources, because I can always have up to date software. If I want to install some program from source I usually do next ...
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408 views

Creating yum .repo file from a remote repo using rpm

This command (from the install page for Varnish 3.x): rpm --nosignature -i http://repo.varnish-cache.org/redhat/varnish-3.0/el6/noarch/varnish-release/varnish-release-3.0-1.el6.noarch.rpm appears ...
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1answer
410 views

Can I install libXcomposite.so without the root permission?

I got this error when I execute dropbox on CentOS. ImportError: libXcomposite.so.1: cannot open shared object file: No such file or directory I don't have a root account. Output of uname -a: ...
2
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0answers
140 views

Setting up traffic for GRE Tunnel

I want to set up clients that are behind NAT with a public IP but allow them to have one or more public IP's on their device. The idea is to have a linux box with either 1 or two network cards. Lets ...
1
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4answers
7k views

“The GPG keys listed for the ”atomicrocketturtle.com“ repository are already installed but they are not correct for this package.”

When running this on CentOS 6: yum update I accept the transaction summary that it presents and am then immediately presented with this: Downloading Packages: warning: rpmts_HdrFromFdno: Header V3 ...
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1answer
361 views

CentOS: what impact does a kernel update have?

When running this on CentOS 6: yum update I get this: --> Finished Dependency Resolution Error: Package: 2:irqbalance-1.0.4-6.el6.x86_64 (base) Requires: kernel >= 2.6.32-279 ...
2
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2answers
3k views

How to get CentOS 6.5 gui?

After, I've installed CentOS 6.5, I just have a terminal with a black background and I can't get gui for it. Any recommendations?
0
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1answer
3k views

Nagios misinterpreting Http response!

I've installed Nagios 4.0.1 on my CentOS 6.5 server. Since I'd set up Node.js to use port 80, I configured the Apache (httpd) service to listen to port 3000 instead. I can open Nagios console and ...
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1answer
284 views

Switch Maven version after installing from jpackage?

I've installed maven3 on CentOS from the JPackage repository. Problem is my installs also seem to have pulled in maven2 which is the default. Is there any way to switch /usr/bin/mvn to be maven3? ...
2
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1answer
92 views

CentOS replace config error

I'm currently working on updating our CentOS server, however whenever I'm trying to use yum I get this error. Config Error: Plugin "replace" requires API 2.6. Supported API is 2.5. I'm new to ...
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0answers
601 views

set the default keyboard type to ascii mode

I am running CentOS 6.5 and I am having problems setting the default keyboard mode to ascii for the virtual terminals. Currently, only the system console defaults to ascii mode, but if I log in to an ...
3
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1answer
353 views

Removal of HDD causes kernel panic

I recently added a 2nd HDD to a system and then proceeded to do a clean install on to this 2nd HDD of CentOS 6.5. The original system was CentOS 5.9. My plan was to leave the original HDD in place so ...
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1answer
2k views

CentOS 6.5 + KVM (Virtual Machine Manager) create shortcut - Laucher for Guest Machine

How can I create a Launcher on my desktop for guests machines inside of KVM on desktop of CentOS 6.5?
4
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1answer
539 views

Properly configuring symmetric active NTP?

I'm trying to configure two NTP servers to be peers to each other but I have no idea how to tell if it is working or not or whether my NTP configuration is even correct. I've put a simplified view of ...
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1answer
158 views

CentOS - Creating a partition for OpenVZ

I've recently installed a fresh copy of CentOS 6.4 and I was going to install OpenVZ on it however on the install instructions it said that it is advised to make a separate EXT4 partition for the VMs. ...
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1answer
4k views

repairing a damaged grub with centos

I have a damaged grub in my centos system. to repairing this problem, I use rescue mode and then I execute this follwing comand : chroot /mnt/sysimage grub-install /dev/mapper/ddf1OSp3 and then ...
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1answer
83 views

CentOS VM 3972 Segmentation Fault

I'm trying to install MATLAB 2012 on CentOS 5.8 running on a VM cluster. I was able to mount the .iso file, but when I run ./install, it was unable to write to /tmp giving the error, "no space on ...
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1answer
3k views

mcrypt, EPEL and CentOS 6.4

I am having issues installing php-mcrypt. I am not an administrator of any level. I have performed the following. Installed EPEL Installed REMI Configured EPEL Updated YUM Cleaned YUM Installed ...
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1answer
226 views

Creating an email server on CentOS 6

I'm looking into creating my first email server on CentOS Linux. I know it can be a challenge when it comes to managing one, but i'm up for the challenge. So if i have my domain name pointed directly ...
0
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1answer
156 views

Building rtmpdump on RHEL x86 without yum and no root rights

I have an ssh connection to a RHEL x86 machine, and I can't use yum and I don't have root rights. Is there a way to still install rtmpdump? By looking at this tutorial, it seems that installing ...
2
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1answer
2k views

A messagebox keeping popping up in my centos VNC server asking to change proxy settings?

I have included a screenshot of what it looks like. It keeps appearing and in the morning you to close it 50 times. Could you please help me identify where the problem lies? NOTE: It's CentOs 6 ...
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1answer
5k views

Transfer files from CentOS VM VirtualBox to Windows host machine

How can I transfer the scripts and text files I've created in my CentOS environment and put it in my host desktop (Windows 7)? I've tried using ftp but it needs to configure the routers to use vsftpd, ...
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0answers
471 views

Improving TCP performance over a gigabit network

I have two machines both network cards speed is 10Gbps. The inbound bandwidth between the two machines is 10Gbps, the outbound bandwidth internet bandwidth is 500Mpbs. Both machines are using public ...
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0answers
29 views

Permisison/Ownership issue with secondary FTP account

I have Centos 6.5 final. I have chroot setup and working properly and I also installed vsftpd. I now need to create a new user named extDeveloper and give this user access to a specific account. I ...
2
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3answers
2k views

How do I drop root privileges in shell scripts?

The "--up" option in OpenVPN is normally used for routing etc. And so it is processed before OpenVPN drops root privileges to run as nobody. However, I am invoking shell scripts that need to run as an ...
2
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2answers
176 views

Add new packages to repository server

I'm using CentOS I've built a repository and put packages on it ,testing from another server and all things are fine. When I added new packages on repository and execute: $ createrepo -v ...
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0answers
808 views

Apache server: permission and symbolic link problem

I am using CentOS(Linux 2.6.32-431.11.2.el6.x86_64). I am trying to create an Apache2.2.15 web server. Every thing configured very well. My DocumentRoot is the default location i.e. /var/www/html. I ...
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2answers
299 views

Disk full on a server with a large /home partition

I've just got this CentOS Server but I think I've set it up wrong as I can only upload a few GB then I start getting errors, It should have ~1TB. this is the results of lsblk [root@ns4005990 ~]# ...
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0answers
2k views

Samba instructions work on CentOS 6.5, but not CentOS 6.3 - permissions in Windows are different

I followed these instructions to install Samba on both a CentOS 6.3 OS and a CentOS 6.5 OS. http://rbgeek.wordpress.com/2012/05/25/how-to-install-samba-server-on-centos-6/ It only seemed to work ...
0
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1answer
260 views

Rooting Linux via mysql

I have a CentOS 5.6 x86 installed. I have full access to mysql but it seems I have forgotten Linux root password. How I can access the root via MySQL? Is it even possible? Update: MySQL Version is ...
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0answers
3k views

mysqld dead but pid file exists

Webserver was running fine for weeks then suddenly: I can access, but I am unable to log into Webmin I can access Magento, a php-based storefront application, but I am no longer able to log in and ...
2
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0answers
23 views

Intel Xeon stuck at 800mhz CPU Freq on RHEL 6.5 [duplicate]

Currently running into a headache trying to figure out why my CPU speed is stuck as such a low frequency. After doing some research, I found that cpuspeedutil does actually control the state of the ...
2
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1answer
2k views

USB to Virtual Machine XenServer 6.2

I've been fighting with this for a while and still nothing. So here is the deal, I have a XenServer 6.2 machine with many VM. I'm trying to attach the USB Port to the Virtual Machine, to use it with ...
3
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2answers
4k views

how can I add records to the zone file without restarting the named service?

I'm working on centos6.5 and bind9 and I have managed to add records to a DNS zone by doing this steps: creating the key: dnssec-keygen -a HMAC-MD5 -b 128 -n HOST example.com. editing conf. ...
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1answer
2k views

How do I maintain a separate (newer) glibc / gcc / … stack as non-root on Linux

Our computation cluster runs a very old version of CentOS, with an old Kernel (2.6.18) and, of course, old libs and binaries. Because updating the whole thing requires a lot of work on all the nodes, ...
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1answer
1k views

Cannot install Snort 2.9.6.1 due to “Not a compatible architecture”

I have Centos 6.5 installed on a Dell Inspirion Intel chip. When I entered uname -a I got Linux family.room 2.6.32-431.el6.i686 #1 SMP Fri Nov 22 00:26:36 UTC 2013 i686 i686 i386 GNU/Linux I ...
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1answer
1k views

Server Not accepting TCP/IP Connections

I have a Wt application running in a CentOS server machine(Machine A) in the port number 9798. Application is up and I could view the web page with the URL, http://localhost:9798 But application ...
5
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1answer
8k views

What audit log files are created in linux to track a users activities?

One of the machines on our networks was consuming a large amount of Internet bandwidth. However no user was using the system. When I connected to the server using SSH and ran who it showed that a ...
3
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2answers
2k views

SSH Login doesn't work using a key Without Password?

Agent admitted failure to sign using the key I'm working on centos6.5(32bit) and I have tried to ssh log in without Password Using ssh-keygen & ssh-copy-id? the steps that I have done: first I ...
3
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0answers
582 views

Microphone not working on Centos 6.5

I have installed CentOS 6.5 on a Dell Insperion with an Intel chip. I first noticed that my microphone is not working on Skype on CentOS although it was working fine with Windows 7 on the same box. ...
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3answers
4k views

What commands are available in the %pre section of a Kickstart file on CentOS?

Environment: CentOS 5.5 and 6.4 I have a request to analyze the hardware before installation to make sure our customers don't install our software on sub-standard server hardware. For example, ...