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

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CentOS DNS Server for localhost

I need install the DNS Server (BIND - CentOS 7) to work only locally. I mean, the same CentOS that has the BIND will connect/search in the DNS, any other host will 'connect' with this machine. The ...
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24 views

vpn connection was failed

I have CentOS 6.6. I used a Cisco compatible VPN (vpnc), but after I made a VPN and clicked on it, I got the following error message: the vpn connection "1" was failed" Then, when I used this ...
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25 views

CentOS lock screen not unlocking

I have a centOS VM that when I lock the screen it will not let log me back in. I can enter my password as many times as I'd like, even try to "switch users" but the VM just ignores everything and ...
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What are the steps to migrate from GRUB to GRUB2?

I have a fresh installation of Scientific Linux6/RHEL6/CentOS6: I have /boot with boot loader and / with all else (which are sda1 and sda2 partitions of one hard drive, on a fresh, real system). I ...
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How do I track down why my system is unstable?

I am experiencing a problem where I use Chrome on my X220 with CentOS 7 (kernel 3.10.0-229.el7.x86_64). It begins when I've been surfing Chrome for a bit and have a few tabs open. Chrome may just ...
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24 views

How do I prevent application from auto-launching when logging in via SSH

Each time I login via SSH, the Mutt automatically opens. How do I prevent it from doing so? I have compared my settings on my staging server to the live server and cannot spot the difference. vim ...
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20 views

Centos 7 Mail log?

Previously I was using tail -f /var/log/maillog on Centos 6 When trying tail -f /var/log/maillog in CentOS 7 it says: cannot open ‘/var/log/maillog’ for reading: No such file or directory tail: no ...
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25 views

Internet connection proflem on CentOS and Redhat linux

I am new on CentOS and installed dual boot with windows 7. I am using a local isp internet on my windows7 system but can't access through centos. On centOS system, using the same IP, DNS, and Server ...
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26 views

allow non-root user to run programs compiled by root in /root/bin

I just finished and installed ffmpeg installation on a centOS box via the guide made by ffmpeg themselves https://trac.ffmpeg.org/wiki/CompilationGuide/Centos As it turns out, ffmpeg was installed at ...
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23 views

IPA server configuration: Cannot use ip network address

I am stuck with an error while configuring IdM server for my enviorment.I got this weird error invalid ip address 192.168.1.77 for server.example.com: cannot use ip network address Error came soon ...
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17 views

Renamed mount point on CentOS 6

I have the following situation on my CentOS server. There are 2 HDD connected and mounted: Filesystem Size Used Avail Use% Mounted on /dev/xvda1 9.9G 7.7G 1.7G 83% / none ...
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FIPS integrity test failed

I recently enabled the fips module in my CentOS 6 machine using this guide. During reboot, the system halted with this error: SELF TEST FAILED (/usr/lib64/hmaccalc/sha512hmac.hmac) dracut: FATAL: ...
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22 views

yum update conflict rubygem-passenger-native-libs from passenger repository vs centOS updates

yum update on a puppet dashboard throws up following error. How do we resolve it safely? Error: Package: 1:rubygem-passenger-native-libs-3.0.19- 1.el6_1.8.7.352.x86_64 (passenger-centos6-x86_64) ...
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14 views

How to Configure freepbx and Matrix Eternity on PRI Line?

I need a to configure freepbx with matrix eternity on a PRI line and setup 12 seats for making calls outside. Matrix Eternity Device is ...
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38 views

Latest Mono, XSP and Mod_Mono throwing error when executing mod-mono-server2

I have installed the following versions from source on Github (tagged releases) mono 4.0.3.19 mod_mono 3.12 xsp 3.0.11 Everything appears to install OK but when trying to Start apache I get the ...
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46 views

Using CentOS as a thin client

I have about 50 desktop PCs running CentOS. These will be used as "thin clients" for users to access their real desktops (VMs) using some flavor of NX technology. So, the PC on the user's desk is a ...
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30 views

Django WSGI setup causing permission denied issues

I'm new in the world of Django. I've been working on setting up WSGI to serve my Django project. It is working fine on my personal machine but on the server I'm having a hard time to setup. I'm ...
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15 views

Centos7 starting very slowly?

My Centos7 starts very slowly. I do not know what is the cause. This problem appeared after I upgraded it to a new version. Can you, please, help me solve the problem? If more details are needed I ...
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12 views

Zenoss pythonThresholdException error

Zenoss query here, first things first: I have a CentOS 5.6 virtual server hosting Zenoss 4.2.5 and I am experienced no compatibility issues with this so far - it does everything I need. The problem ...
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23 views

How can I confirm download status for yum update on RHEL5/CentOS5?

I have an older server/appliance running CentOS 5.x. When I run updates on it, yum shows something like this: The screen stays like that until all packages are downloaded -- no status or progress ...
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18 views

How should I upgrade php5.3.20 to PHP 5.4 or higher than in Centos 5.3?

I build a webs application by using Codeigniter3 which required PHP5.4 o higher than this version and hosted in Centos Linux 5.3. So how should I upgrade PHP5.3 to higher version? However what is PHP ...
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52 views

How to set the repo file properly to have lxde installed?

I want to have lxde installed on my centos 7 with the command. yum install -y lxde An error occur: Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * base: ...
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48 views

Vagrant + CentOS 7 - Apache fails to start, I don't see an error

I'm spending some time trying to provision a Vagrant box running from a CentOS 7 base box. After a fresh install of Apache, I am able to hit the server over http and restart the server, but as soon ...
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35 views

X will not start, Centos 7

I installed X/X11 and proceeded to install DWM on my X220. However, X does not start and I am having trouble figuring out why. I have posted the /var/log/Xorg.0.log file here: ...
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103 views

PAC Manager dependencies problem under Centos 7.1

I have downloaded PAC Manager from sourceforge.net/projects/pacmanager/files/pac-4.0/pac-4.5.5.5-2.x86_64.rpm/download When I try to do yum install on it, I get dependency errors at the end: Error: ...
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42 views

why can't install centos-6.6 such the way as centos-7.0 from usb-hdd?

Here is the file structure in my usb-hdd. ├── boot │   └── grub │   ├── fonts │   │   └── unicode.pf2 │   ├── grub.cfg │   ├── grubenv │   ├── i386-pc ├── centos-6.6 │   └── ...
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36 views

CentOS 7: Installation not starting

A couple of days ago, I downloaded CentOS 6 and played around with it to get a feel of this OS. I finished with what I wanted to learn and decided to go ahead and do a fresh install of CentOS 7. Heres ...
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30 views

Modprobe vboxdrv failed centos

I am trying get Virtual box running in Cent os7 So far the vbox kernel compiles but will not start I'm just told "modprobe vboxdrv failed, please use dmesg to find out why" I have looked at "dmesg" ...
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42 views

EXT4 Journaling - Problem

Basically my root (/) ext4 partition keeps being mounted as read-only when I apply internal journaling feature. I understand that this should be default, but today I had been trying to apply external ...
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How to run Padre after installing via cpanm?

./cpanm Padre It looks like I could successfully install Padre. But.. How can I start it? I installed it with a normal user, not root.. where is the start script? [user@notebook ~]$ find . -type f ...
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38 views

Zimbra Bind IP address change

My client physically moved their CentOS 6.5 servers to a different data center with a new set of IPs. Before moving, they configured Zimbra 8.0.7 from Admin console with new bind address where they ...
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35 views

ffmpeg libass centOS 5.11

Hi i just got a vps server and it has CentOs 5.11 and kernel 2.6.18 and I need to install ffmpeg on it with --enable-libass. So I have tried to compile but I'm having problems with libass because of ...
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22 views

How to automate HP 3PAR in CentOS using Python?

I have worked out in windows to start 3PAR using python but i am not able to login into 3PAR in centos. Additionally how to view system,hosts, provisioning Tab(list Volumes, Virtual Volume sets, ...
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31 views

Install basic gnome desktop on gnome7 minimal install

I recently installed centos7 minimal. I would like to install gnome classic now to start automatically but I'm trying to avoid the traditional install GNOME desktop because I don't want all the ...
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43 views

default cpu affinity

On a CentOS 6 system with 32 cores, what could make all processes run under core 0 only? This is a system running nothing but a few stunnel processes actively. This is not a system we would set IRQ ...
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103 views

OpenVZ fails Container creating (Unable to get appcache tarball name for ve-basic.conf-sample with ostemplate debian-7.0-x86-minimal)

I have OpenVZ installed on CentOS 7.1. After I execute vzctl create 101 --ostemplate debian-7.0-x86-minimal I get command /usr/sbin/vzpkg exited with error 8 Unable to get appcache tarball name ...
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23 views

restrict access to certain directory lighttpd

how to restrict access to certain directory in lighttpd, block all ip's and only allow for my ip address. root directory is at /var/www . and i created /var/www/stats directory and symlink to ...
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67 views

yum update dependency in CentOS 6.6

After installing a rpm, by running sudo yum update in CentOS 6.6, I am getting the error Error: Package: qgis-python-2.8.1-3.el7.centos.x86_64 (neteler-QGIS-2.8-Wien) Requires: ...
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78 views

Centos 7 GUI Freeze problem

I have installed CentOS 7 DVD ISO on my MSI GE70 Laptop that has geforce gtx 765m, when the GUI comes after 5 seconds screen freeze. Is this an nvidia problem? How can I solve it? I cannot disable ...
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61 views

Implications creating System Accounts “useradd -r” Linux Fedora/RHEL/CentOS

I want to know what are the implications of create an account using -r option? # useradd -r ... The help says: -r, --system Create a system account. System users will be created with no aging ...
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51 views

Disabled root Access, how to use FTP

I removed the ability to login using 'root' to stop brute force attacks on my server, instead logging in as a regular user then 'su root' to the root if required. I need to use FileZilla to move, ...
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23 views

How to make a background service to capture commands and their output?

Is there anyway to make a background service capture all the commands executed by a user and also save the output in a text file?
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Centos Redhat Cluster LICI RUCCI

I have 3 systems [Normal Desktops College LAB] with 2 Network Interfaces each node1.test.com : Public IP : 10.10.10.2 Cluster Hearbeat: 192.168.1.2 node2.test.com : Public IP : 10.10.10.3 Cluster ...
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CentOS 6.3 - Firefox icon missing after reinstall

On CentOS 6.3, I have reinstalled FireFox to latest version using following set of commands: yum remove firefox cd /usr/local wget ...
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39 views

Have kickstart install TCPdump

I have a kickstart file for RHEL 6 and in the package section for the installing of the TCPdump command line utility I put tcpdump as the package name. Like I did with java and g++ in the kickstart ...
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121 views

PuTTY does not connect over SSH; other clients work fine

I have a CentOS system that I can connect to using several SSH clients (FireSSH, WinSCP, MySQL Workbench over SSH). For some reason, PuTTY, which was working a few days ago, can not connect. It will ...
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PHP 5.6.10 Bad Installation on CentOS 7 using Plesk 12

I upgraded the PHP version from 5.4 to 5.6.10 with remi and while I am trying to access to a file.php I can see the full code in "Source code". I was reading about that and it seems that the ...
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43 views

How to configure yum repo in centos 7

I have Installed CentOS 7 on my VMware. How to configure yum repo? What path do I have to give? ISO file is in my main machine.
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CentOS 7: What is the difference between applications.menu and gnome-applications.menu?

CentOS 7 using GNOME 3 comes with both "applications.menu" and "gnome-applications.menu" in /etc/xdg/menus. If I wanted to create a submenu for all users on a machine (i.e. NOT using alacarte), which ...
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191 views

Nvidia nouveau driver problem on CentOS 6.6

I'm having problems using the nouveau driver for my Nvidia GeForce 9100. Xorg starts up and works fine, I am able to use everything, although in /var/log/Xorg.0.log I have: $ cat /var/log/Xorg.0.log ...