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

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CentOS - upstart script is created, but its never running at all

I have this following setup but its not working in my CentOS 6x (3.10.23-xxxx-std-ipv6-64 #1 SMP Tue Mar 18 14:48:24 CET 2014 x86_64 x86_64 x86_64 GNU/Linux) Step 1: vi /etc/init/a.conf description ...
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49 views

Giving a user SFTP access only with access to subdirectory outside of home?

I have user [USER A] account which contains scripts and a downloads folder. I would like to create a new account [USER B] so that the user has read/write (SFTP and not full SSH) access to their home ...
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487 views

Interdependent conflicting packages in CentOS 6.5

I've been using CentOS 6.5 as my OS for quite a while. Usually I don't have many problems with Linux installations, but as they new CentOS 6.6 was released I found myself in a bit of a problem. There ...
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24 views

Huawei(e303s) installation in centos 6.4

I have installed CentOS 6.4 in my system. I connected Huawei(e303s) with airtel 3g,tried installing the driver provided with Huawei its getting installed with some error. It shows error like : The ...
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124 views

Tor install on CentOS server

I have followed the instructions provided here: https://www.torproject.org/docs/rpms.html.en However, when running yum install tor, i get the following dependency error: Error: Package: ...
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124 views

Fatal Error while trying to detect swap signature

I've installed CentOS 6.5 On VMWare Workstation. I added a SCSI Virtual Disk (.vmdk) to this Machine when it was Powered On. I decided to store the Disk as a single file & allocated all disk space ...
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142 views

Stopping postfix - are messages queued when postfix is idle?

I am running some scans on my server tonight and would like to disable email notifications since there is a chance for a LOT of them to be sent out. I am planning to issue service postfix stop ...
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1answer
165 views

How can I manually reset RX / TX counters in ifconfig output without impacting data delivery?

CentOS 5.9 I'd like to reset the RX/TX counters in ifconfig output for an interface. My understanding is that these counters get reset during a reboot but I'd like to avoid rebooting. Is there ...
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83 views

CentOS machine keeps “losing” active directory membership

All of our CentOS 6 machines have been joined to our active directory domain. Each of these machines eventually "loses" their domain membership, which breaks authentication for AD users. I created a ...
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88 views

Download & install Report Lab on CentOs

I am following this link to install report lab and download parts of googlebooks as pdf. However, I am on CentOs 5, can not use apt-get, probably I need to use yum, but I do not know how. Any ...
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162 views

Why don't I hear audio playing from my CentOS 6.5 Vagrant box?

I want to play a wave file from my CentOS 6.5 Vagrant box using aplay and of course I want to hear the sound. This is what I do: > aplay sine.wav Playing WAVE 'sine.wav' : Signed 16 bit Little ...
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432 views

How to install PySide package for CentOS 7

I'm trying to install PySide on CentOS 7. Seems pretty straightforward, enable EPEL repo, and install. Except that EPEL doesn't seem to contain a PySide package (yum install python-pyside fails with ...
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71 views

pip won't find system package on a custom location

I am working remotely on a CentOS system via bash with an account without administrator privileges and I need to install the Python package matplotlib. I can do this using pip install -t ...
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1answer
76 views

showkey -s doesn't display scancodes in CentOS 6.4

I'm running CentOS 6.4 on vagrant and then doing a vagrant SSH into the box. I've been trying to get backspace to work correctly for a while now (as chronicled here: Centos Terminal Configuring ...
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1answer
321 views

Access old version of file

I was working on a file locally in Notepad++ and uploaded it via FTP to server - during the upload something went wrong without me realising and the uploaded file is now empty (size shows as 0). I ...
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93 views

SNAT with firewall-cmd?

I have an interface with multiple IP Addresses (on CentOS 7), which is in zone "external" (with masquerade on). I want to specify that, if a connectiona attempt to a specific address goes out, to use ...
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35 views

Installing an OS from source on separate partition. Is this possible?

I'm trying to install Minimal CentOS on a small partition and the installer quits and brings me to a prompt every time. It says something like it can't find initrd.img. I was wondering if I could ...
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442 views

No volume groups found after restoring CentOS image to VirtualBox VM

I used Clonezilla to backup an HP Proliant server running CentOS 5.10. I restored the image to a VirtualBox VM but when I try to boot I get an error of "No volume groups found" "Volume Group ...
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296 views

Problems while executing slimerjs on linux (Centos 6.5 32bit)

I'm not used to work with Linux yet I wanted to try to use slimerjs on a Linux vps in order to have access to php exec function since most hosting companies disable that function. I did manage to ...
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256 views

Yum or Reposync: How can I slowly remove a repository without unintended dependency issues?

I have used reposync to create and maintain local copies of two repositories, remi and remi-test. These are repositories maintained by Remi Collet. On several systems in an internal LAN, I added both ...
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1answer
44 views

Empty kernel processes on CentOS vps : 2 different servers

I'm not sure I'm asking correctly, or perhaps I'm just looking at the wrong things. I'm migrating from one CentOS Vps (on an OpenVZ box) to another CentOS VPS (on a VMWare box). VPS #1 = CentOS ...
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1answer
307 views

What is the default behavior of %install?

I am attempting to build an RPM using the -bb flag (%prep %build %install %check package). This is the output of the %install step: Executing(%install): /bin/sh -e /var/tmp/rpm-tmp.2kgeNY + umask 022 ...
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136 views

Get KERN_DEBUG messages into syslog on rhel7/centos7?

I've been trying to get KERN_DEBUG messages logged to a file in centos7, but have had no luck. I can get them just fine from "dmesg," but not /var/log/messages or /var/log/dmesg Here's a MWE kernel ...
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198 views

Datanode in slave isn't working : Hadoop in CentOS

We've created a Hadoop cluster of two machines following these instructions: http://tecadmin.net/set-up-hadoop-multi-node-cluster-on-centos-6/ with the machines set as follows: hadoop1 = master ...
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1answer
197 views

Mitigating BEAST Centos 6.5 Apache 2.2

I'm trying to get my system to pass a BEAST scan, it seems no matter what settings I use, an error is always returned stating that TLS 1.0 is enabled. I'm using Qualys SSL Labs to test ...
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543 views

Got the “ERROR: Cannot decode data link type 239” message when turn on sniffer mode

I would like install snort 2.9.6 into Centos 7 the installation is ok and the result of the self-testing mode is correct but when I run this command to change Snort into sniffer or nids mode. I got ...
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186 views

Set persistent permissions for /var/log/boot.log

Every time I reboot my CentOS 6.5 computer, it writes the boot log to /var/log/boot.log. The permissions on this file are always 644 after a reboot. I want the permissions to be 600. When I change the ...
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1answer
136 views

How to install mutliple PHP instances and configure for Apache

I need to upgrade my PHP installation on CentOS 6 from 5.3 to 5.5. While I have a couple of webprojects running I like first to install the new PHP in parallel and switch back to the old one if ...
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4k views

Redhat / Centos 7 Firewalld best practice for pptp or L2TP/IPsec rules

Having a quick look at Centos 7, and though I'd spin up a VPN daemon or 3, but immediately discovered the usual packages aren't yet in the core repositories, so had to dig around and found the ...
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198 views

How do you run CPU at turbo speed continuously

processor : 7 vendor_id : GenuineIntel cpu family : 6 model : 60 model name : Intel(R) Xeon(R) CPU E3-1230 v3 @ 3.30GHz stepping : 3 cpu MHz : 3299.670 ...
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292 views

Centos installation

I want to install CentOS 6.4 on HP DL380 G4 server. First of all I select install or upgrade an existing system, but it boot something like without graphic (like basic video card). My main problem is ...
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139 views

SSH key authentication works with /usr/sbin/ssh -d, does not with the daemon?

CentOS x64 6.5: if I connect as root to my server and do the following: service sshd stop /usr/sbin/ssh -d I'll able to connect as user using public key authentication from my development machine: ...
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115 views

How to route network in order to use internet on CentOs?

I have 2 computer in local network which have CentOS both. One has wireless card which can use internet connection. Other computer does not have internet connection. I want to route ip addresses in ...
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2answers
556 views

install opencv-2.4-9 on centos 6.5 with cuda 5.5 support

I can't seem to install opencv 2.4.9 on centos 6.5 with cuda 5.5 support. This is my cmake output: [root@cadejos-0 opencv]# cmake -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/opt/opencv -D ...
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41 views

Passing Environment Variable to NetworManager GUI

My VPN stoped working when I switched to Centos 7. I narrowed the problem to the lack of MD5 support (not strong enough). I followed this thread, and now I can use open-vpn on the command-line to ...
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22 views

Why Would Spacing Matter in grub.conf?

See my earlier question. GRUB wouldn't recognize the XEN kernel until extra blank lines were added and the title of the GRUB entry matched the version of XEN installed on the server. I've always ...
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2k views

How do I install Exim and Horde on Centos 7 with MariaDB 10?

I can't find a guide for this (they are old and don't work) and I can't seem to manage to install it. I can't install Postfix because of its dependencies, so I'm going with Exim, which I installed ...
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348 views

How to find the cpu and memory usage of child processes

Supervisord is running on centos server. If I do ps -e -o %mem,%cpu,cmd | grep supervisord | awk '{memory+=$1;cpu+=$2} END {print memory,cpu}' I get 0 0 just because supervisord is just an ...
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106 views

TPM passwordless boot

I'm trying to create device with CentOS6, encrypted disk (with LUKS), TPM module and TrustedGRUB to boot securely and without interaction. I'm following instructions from ...
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89 views

Virtual Host setup works for one server, not another

Having an issue with my virtual host set up. Used this tutorial as a reference on both: http://youtu.be/wXIJMtwmPCE Apache/2.2.15 (Unix) on both servers. Seemingly Identical httpd.conf file on both ...
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937 views

Apache Virtual Host Include Not Working

Attempting to get my domain to redirect to the associated vitual hosts, but the Include is not working as expected and displaying the proper htdocs directory. It is still displaying the default apache ...
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71 views

Unable to start apache

I'm running CentOS7 in virtualbox on a mac (osx 10.9.3). Ultimately, I want to acces the website on my Guest VM from my Host. I can Ping and SSH to VM but I can't acces the webpage when entering the ...
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1k views

openswan l2tp/IPsec VPN server (NAT'ed)

I have searched for a solution for this problem for a few days now and cannot seem to find anything close to my situation (server is always NAT'd and clients are sometimes NAT'd). I am trying to ...
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333 views

'altinstall' python-devel; can't install psycopg2 on centos

I installed python2.7 on my centos 2.6.32-431.17.1.el6.x86_64 following these directions: http://toomuchdata.com/2014/02/16/how-to-install-python-on-centos/ #after the yum stuff... # Python ...
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1answer
124 views

How to Resolve a .so Dependency

I have a package (.rpm) on CentOS 6.5 that requires a .so file, which I also have on my machine. When I attempt to install the package I get an error stating unresolved dependencies regarding the .so ...
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315 views

VIA “Chrome 9 HC” graphics card causes blackscreen on CentOS 6.5

I'm using Centos 6.5 (i386, fully updated) and get a black screen, when trying to startx. Debian was able to run a Desktop-Environment on the same machine. My graphics card is: CN896/VN896/P4M900 ...
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814 views

Samba 4.1.9 returning “access denied” trying to change share perms from Win client

UPDATE: version mismatch seemed to stop happening for some reason, although not sure why/at what point. Have a "public" (within LAN...like this) read-write share on a CentOS 6.4 box running, ...
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2answers
1k views

How to run java service as a non-root user on CentOs 6

I have a script that starts a Java application as a service on CentOS 6: #!/bin/sh # chkconfig: - 80 20 SERVICE_NAME=cn4server PATH_TO_JAR=/usr/local/share/myserver/cn4server.jar ...
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245 views

How to activate t1lib?

Using CentOS el6.x86_64. I installed t1lib this way: Installing RPMForge Repository wget http://packages.sw.be/rpmforge-release/rpmforge-release-0.5.2-2.el6.rf.x86_64.rpm rpm -Uvh ...
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577 views

Help with lost software RAID5 on CentOS 6.5

I've been searching for hours and giving up / too scared to delete all my data. I have a file server running CentOS 6.5 which has 4 WD RED 2TB drives (all > 1 year old) in software raid 5 with mdadm, ...