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

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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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30 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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111 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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12 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
55 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
150 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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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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40 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
63 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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36 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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46 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
93 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
93 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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87 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
70 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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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
79 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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65 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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47 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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63 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
107 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
111 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
79 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
42 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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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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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
26 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 ...
3
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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 ...
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29 views

Failed to start GitBlit after Centos 7 update

I have a CentOS 7 machine that runs GitBlit 1.6.2. Everything was fine until I have updated the system (yum update) after which GitBlit doesn't come up any more with the following error: [root]# ...
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54 views

How do I add a Redis Cluster to a Pacemaker CentOS 7 Cluster?

I need to set up a CentOS 7 web server cluster that is able to manage user sessions while also load balancing across the nodes in the cluster. Towards this end, I have transcribed instructions from ...
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1answer
316 views

systemctl keeps timing out on service restart

I'm running CentOS 7.2; see below: # systemctl stop firewalld Error getting authority: Error initializing authority: Error calling StartServiceByName for org.freedesktop.PolicyKit1: Timeout was ...
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1answer
76 views

Centos 7.1 updated to 7.2 with no login screen (gstreamer)

I have updated Centos 7.1 to 7.2 today but excluded the gstreamer package since there was a conflict (package from epel repo) As a linux newbie i failed to realize that the update was a version ...
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3answers
75 views

Stripping down a Linux (CentOS7) system

How do I strip down a Linux system (especially CentOS 7) to only the parts that I need? I'm not asking for a specific command, but more for a hint to where I can find more about the packages that I ...
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1answer
127 views

Install PostgreSQL client (psql) only on CentOS

Simple question, but no resources found about this. Is there any way to install only a PostgreSQL client, the terminal-based one, psql, on a CentOS7 system, without installing the complete PostgreSQL ...