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

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Installing qemu-kvm 2.5 on Centos 7

Are there any repos out there that carry the most up-to-date version of qemu-kvm as well as dependencies? I ask because the newest qemu-system has a HUGE list of dependencies and I would like to not ...
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Centos 7 i686 Log entries

It appears that my system has a built in bootable recovery image that appears when it doesn't boot to windows and it presents it self as a SMI USB drive. Linux is picking this up as SDE which doesn't ...
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34 views

TLSv1.2 support in CentOS 5.8

Right now I can't access HTTPS site from PhantomJS headless WebKit browser because of TLSv1.2 In my CentOS 5.8 I have following OpenSSL 0.9.8e-fips-rhel5 01 Jul 2008 verison installed. I think I ...
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Detect ad blockers add-ons/extension on CentOS 5.8 [closed]

In continue to this question http://stackoverflow.com/questions/34567812/phantomjs-centos-5-8-unable-to-render-the-page/34587524#34587524 I'd like to detect any ad blockers add-ons/extension installed ...
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28 views

Why can't I install CentOS 7 in dual bot wth Winows 8.1?

I'm getting crazy with this OS :'( I want immediately say that I'm sorry for my English, I hope I can explain myself well. Please let me just explain few things: I need to build something under ...
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2answers
88 views

Centos 7 - ssh-keygen is not generating keys

sshd service doesn't start due to missing keys. When I try to generate the keys using ssh-keygen -t dsa I just get message saying: Generating public/private dsa key pair. I don't get prompt to ...
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86 views

CentOS update from 7.1 to 7.2 with 2.6 OpenVZ kernel?

We are using CentOS 7.1: $ cat /etc/redhat-release CentOS Linux release 7.1.1503 (Core) We deferred the 7.2 upgrade. It looks like it did not cause any problems so we are planning an upgrade. The ...
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1answer
35 views

How to install man pages on centos? [duplicate]

After an install of centos 7, I can't acces man pages : # man ls -bash: man: command not found I tried to install it via yum # yum install man-pages ... ok But again: # man ls -bash: man: ...
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116 views

Error getting repository data for epel, repository not found

I have installed the newest epel and want to install mod_evasive rpm -Uvh http://download.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm Uname -a: Linux #1 SMP Fri Nov 22 ...
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27 views

Identifying disk drives during RHEL/CentOS/Fedora Installation

What steps are followed in order to identify a connected disk drive during Linux installation ? I am interested RHEL/CentOS/Fedora procedures. Is it entirely depends on the Kernel package and drivers ...
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1answer
22 views

NGINX not running as configured user

This is not a Joomla issue per se as I think it is more of a permissions issue related to NGINX. This was encountered while trying to set up Joomla. Read below but after testing I think this is more ...
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13 views

Aardvark Control Center wants TLS/SSE2 Library

Environment: CentOS 7.1 64-bit using Intel i7-4771 Gnome 3 shell I downloaded the Aardvark Control Center (Total Phase) and tried to execute the controlctr bash file, however I received the error ...
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1answer
56 views

How do I get a service on a remote CentOS 7 server to persist after I log out?

I am experimenting with running Spring Boot apps on a remote CentOS 7 web server which has been successfully serving up apps on Apache and a stand-alone tomcat instance since day one. However, when I ...
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2answers
36 views

Unable to connect remotely to custom application

I've built an application that listens on the localhost address and a specific port, lets say port 11001. Its on a remote machine with CentOS. I currently have a python script on my local machine that ...
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3answers
160 views

Why does a yum package update replaces my yum-cron config files?

Usually, when applying package updates via yum update, rpm is 'intelligent' enough to respect my changes to configuration files under /etc. (It basically looks at the mtime, compares it and depending ...
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21 views

Lots of strange disappearing connections to my Centos7 host

I run my website on a Centos7 cloud instance. I log in via ssh, and to view connections I use 'ss -tap' Whenever I first do this I see approximately two dozen unique ip addresses for 'users: httpd', ...
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2answers
25 views

Network Configration on Virtual machine

I am creating a Linux environment for learning purpose. I just installed ubuntu for base OS, and I installed centos(minimal) in Virtual box. My goal is to access the centos from ubuntu by Putty. ...
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2answers
41 views

No network capabilities in CentOS

I've just download and installed the latest version of CentOS inside a VirtualBox VM. Installation went OK, but when I start the VM and log in, if I try and ping anything I get an error due to lack of ...
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1answer
65 views

Could not find libjava.so

So I'm trying to install and run the jdk/jre on linux to run app project compilation/signing/etc. actions from the command-line. To install, I used the following command: yum install ...
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37 views

problem while using “ yum groups ”

When i am trying to use yum groups commands in RHEL 7 it is giving me following output. #yum groups list There is no installed groups file. Maybe run: yum groups mark convert (see man yum) I have ...
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47 views

Having problems with make and opencv

I'm trying to build opencv for my x86_64 Centos 6 operating system. I think the problem is make is trying to use the 32 bit version of the bz2 library instead of the 64 bit version. I get this ...
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1answer
96 views

How do I install Supervisor on CentOS? [closed]

I have zero-knowledge of Linux. I always found the interface where I get to click things with a mouse curser to be easier for me than black-windows with a lot of text-lines (at least that's my vision ...
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1answer
25 views

rsync exclude directory not working, when also scanning for only *.php files

Im trying to rsync all the .PHP and .HTML files from any directory inside of /home/ . However in /home/site2/public_html/cache_old/ there are .html files that i do not want to include in the sync ...
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1answer
17 views

Upgrading Java on CentOS

I'm currently working on a production server, and I can't get my Java program to be executed on it because of an incompatibility between the versions. Java 7 is installed on the server, while the ...
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2answers
94 views

No /dev/mmcblk0 during boot

I am trying to install CentOS-6 on an eMMC drive. Since the supported 2.6.xx kernel from CentOS-6 doesn't support mmc, I compiled a newer kernel (4.2.6) which has updated mmc drivers. I tried booting ...
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92 views

How do I mount the /dev/sda partition from CentOS-7-x86_64-Minimal-1511.iso?

I need some help figuring out how to mount partition 1 (xfs, boot) of the /dev/sda device from CentOS-7-x86_64-Minimal-1511.iso on a CentOS Linux release 7.2.1511 (Core) VM. There are multiple devices ...
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1answer
72 views

CentOS 7 Encrypt a PDF

I've recently upgraded our server from CentOS 6 to CentOS 7 and I am having issues getting pdf encryption working on it. On CentOS 6 I installed libgcj and then the pdftk package. I could then ...
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25 views

Prune yum of stale installed packages/duplicate gcc packages after manual install

I'm in a weird situation, and maybe I've messed something up and just need to hit the reset button and re-install CentOS. Off a fresh install of CentOS7.1 the other day, I noticed the latest version ...
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1answer
60 views

yum install overwrite manual installation

Note: I barely know what I'm doing here, as such this may be incredibly obvious, but I wasn't able to find what I was after on Google. Running CentOS 6.7 Yesterday I followed this guide to set up ...
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41 views

Lost space in LVM

LVM Hey. First of all I want to say excuse me for my bad English. I a problem after installing CentOS 7 with LVM. Some space lost after problem with LVM configuration. I tried to add some logical ...
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31 views

PHP-FPM Permission denied on folders

I get read/write errors on a new CentOS + Nginx + PHP-FPM server, this is muy configuration Nginx user nginx; [...] fastcgi_pass 127.0.0.1:9000; PHP-FPM user = nginx group = nginx listen = ...
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1answer
17 views

Only One Resolver ip

so i was trying to setup Cpanel and i got this problem it asked me for a Secondary Resolver which i don't have i tried getting my ip resolver by typing cat /etc/resolv.conf in centos and it gave me ...
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1answer
64 views

bash - sed: -e expression #1, char 15: unterminated `s' command

I try to use sed command inside a loop to replace IP address, but it is always giving me this error: sed: -e expression #1, char 15: unterminateds' command` even it is not missing the end slash. ...
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4answers
83 views

Command not Found in centos 6

i am new to linux and learning it . while installing gambas application i face problem .. sudo add-apt-repository ppa:gambas-team/gambas-daily sudo apt-get update sudo apt-get install gambas3 ...
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69 views

installing dsc30 - python 2.6 fights back

Im trying to upgrade some systems to Cassandra 3.x. The installer want Python(abi) >= 2.7 so I installed it. Still seeing this error: Resolving Dependencies --> Running transaction check ---> ...
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49 views

Unable to install yum on cpanel server

I recently signed up on godaddy and have a user account on cpanel I can successfully use ssh to login to my server this is my operating system details when i use uname -a Linux ...
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1answer
34 views

Is it possible to have a daemon run a process as another user WITHOUT having a superuser daemon?

I'm working on a project at the moment where I have a daemon that needs to run a process as another user. I would like the daemon to not run as root if possible. However, i'm struggling to figure out ...
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1answer
67 views

Yum problem on Centos 6.7

I have installed php, mysql, httpd on my vps. But when I try upgrade php via yum I get the following error. [root@ns1 home]# yum --enablerepo=remi update php Package(s) php available, but not ...
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1answer
21 views

Error while Installing centos 6.7 alongside windows 7

I am havind almost 50 gb free space in hard disk. But while partitioning its shows that "could not allocate requested partitions : no partition slots in sda". I made free space by shrinking my current ...
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1answer
110 views

Installing Dependency for epel from yum update on Centos 6.5

I think that I'm not quite understanding where epel repo reads dependency for a python update. For example when I run sudo yum update I get the below and then successfully run pip install requests and ...
2
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1answer
116 views

Error after installing dnf on CentOS 7

Installed dnf according to these instructions: yum install epel-release -y yum install dnf after that dnf --version works fine but dnf repolist or anything else gives: Extra Packages for ...
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2answers
80 views

Avoid CentOS 7 upgrade via yum?

I help manage a small production server. The server runs a downlevel version of CentOS. CentOS recently announced Release for CentOS Linux 7 (1511) on x86_64. Running yum update picked up the release ...
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2answers
43 views

How to find and install the GNU Smalltalk on CentOS or Fedora / RedHat?

On GNU Smalltalk's webpage, it says: Binary distributions We do not provide pre-compiled binaries for GNU Smalltalk. However, most GNU/Linux distributions (Ubuntu, Debian, Fedora) ...
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1answer
41 views

Default Gateway on CentOS 7.x not setting

Trying to teach myself CentOS 7.x after slowly pulling away from CentOS 6.5. My problem is likely very simple in nature but I am still puzzled by it and would appreciate some input. Basically I am ...
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9 views

Devices for Analog I/O gone from /dev after reboot

I have a system using Centos 6.6 and another system using RHEL 6.6 on the same architecture that both need analog I/O drivers to communicate with sensors that will be attached to the device. Thus, I ...
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23 views

How to enable XRDP drive redirection in CentOS 6.6?

I have installed XRDP via yum on CentOS 6.6 x86_64. The XRDP version is xrdp-0.6.1-4.el6.x86_64. The connection via mstsc is successful. But I can not find the remote directory under the home ...
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1answer
33 views

Change preferred NIC in default routes

I have a VM with CentOS 7.1 and two NICs: eth0, dhcp, 192.168.1.0/24, access to the host and the Internet. eth1, static, 10.0.0.0/24, between VMs only. I have configured IP and connectivity is ...
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1answer
27 views

VirtualBox Centos OS blank screen error

I have a 64 machine with a 64 windows 10 operating system. I am using virtualbox to install CentOs OS. For some reason in the dropdown menu in VirtualBox that helps me build my new virtual machine, I ...
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9 views

ISCSI fetching files requires ISCSI restart

I'm using a FreeNAS for my SAN purposes. Both my ISCSI disks are mounted and can be accessed to read & write. However I'm using two systems, two virtual machine managers running on CentOS and when ...
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1answer
51 views

Centos 6 to Centos 7 cgroups

I'm trying to set up resource limits per user in Centos 7, but I can't find the right commands for the new implementation of cgroups (I did read the documentation but it talks about restricting ...