CentOS stands for Community ENTerprise Operating System, the most popular Linux distribution for web servers with almost 30% of all servers using it. Third-party software is not included in the base.

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621 views

UEFI & legacy PXE chain to WDS

I'm making a PXE server (CentOS 7) that will be able to boot legacy and UEFI clients, so far this works fine, but i also want to be able to boot into WDS via the linux PXE, I was somehow able to make ...
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44 views

Install Fedora desktop on Centos?

Hi and thanx in advance :) So, on my work PC I have pre-installed CentOS 6, which sports a sh*t desktop environment. I would like to know if and how I'll be able to install the Fedora Desktop to it, ...
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234 views

Centos 7 with window manager

I am using Linode as my Cloud hosting and I installed a minimal Centos 7 in my server. Everything is fine. I thought it was a minimal instalation but right after I install "firefox" (yum install ...
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45 views

Install openSuse on Centos server With usb drive

I have an system with Centos server installed on it. I want it to change into OpenSuse 13.2 Unfortunatly the usb drive i have created with ImageUSB is not recognized as bootable Device. Im not able ...
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948 views

Install imap on PHP 5.4 CentOS

So, i tried installing IMAP with yum install php5-imap but package cannot be found: [root@nv-datacenter ~]# yum install php5-imap^C [root@nv-datacenter ~]# yum install php5-imap Loaded plugins: ...
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128 views

Access Samba share in VM via Centos Host with a Windows 10 PC

I'm running Windows 10 on a PC which can see a Centos 7 server on the network. That server is hosting several VMs running Centos 7 on a different sub-net (i.e. 192.168.122.xxx). The Centos Host and ...
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78 views

LVM2 RAID6 CentOS 7 not working

I have a server with 4 spare 6 Tb disks. I want to set up RAID6 on these four disks. It is well understood that 4 is the minimum one needs to set up RAID6. No matter what I pass to LVM2, I get ...
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37 views

Is there an equivalent to debirf for CentOS?

I've been using debirf to create a ram-only image of Debian. Is there an equivalent tool for CentOS?
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46 views

Why doesn't my ssh ask for password?

I created a user 'bbword' on my remote CentoOs a while ago and it belongs to the group 'wheel'. I just changed its password. I have two questions: 1) On my current user, after I execute "su bbword" &...
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494 views

CentOS 7 - resolution on login screen

Ive set the screen resolution on my CentOS 7 VM. But although the resolution is correct once I've logged in, the login screen resolution is far too high. I cannot find a way to change it. Does anyone ...
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775 views

Can't write to an Intel 750 series PCIe SDD in CentOS 7

I am attempting to install an Intel 750 series 400 GB PCIe SSD card into a CentOS 7 system. The SSD shows up as /dev/nvme0 and /dev/nvme0n1 Attempting to format it with fdisk /dev/nvme0n1 results in:...
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44 views

CentOS filesystem mount

I have set up a CentOS server and am administering it using Webmin. (I know webmin is generally frowned upon, but it is how I was taught to work on Linux and I only know basic ssh) The root drive ...
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291 views

Linux Redhat account claims locked even after unlocking

The local linux account won't allow the user to login even after unlocking it. The following command provides the following output: [userBar@host]$ sudo usermod -U userFoo [sudo] password for ...
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252 views

In CentOS 6.6 yum update show some dependency error

When I update centos package it (sudo yum update). It shows following error like. Error: Package: 1:control-center-2.28.1-39.el6.x86_64 (@server1) Requires: libgnome-desktop-2.so.11()(64bit) ...
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231 views

Understanding fdisk -l output and calculating storage

I have basic understanding of disk. (Please correct me if i am wrong) I understand on 1 platter, there are 2 heads, 1 on top, and 1 on bottom. Both side of the platter is able to provide storage ? On ...
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49 views

CentOS / RedHat DHCP working, static is not

I have installed CentOS 7 minimal install without GUI when I setup network configuration with Webmin web interface or manually editing files with VI it does not work. When I use e.g. "yum search ...
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120 views

How do I configure VirtualBox to launch a VM from an external drive?

What steps do I need to take in order to use VirtualBox to access a CentOS 7 installation that is on a detached hard drive? Here is the situation: 1.) CentOS 7 and Windows 7 were installed on a ...
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755 views

VirtualBox claims a USB drive, but hosted CentOS 7 cannot access it

How can I get CentOS 7 to open a USB hard drive from within VirtualBox running inside Windows 8.1? I have VirtualBox installed in Windows 8.1 and I am using it to launch and use CentOS 7 within ...
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168 views

Windows 8.1 Virtual Machine pointing to CentOS 7

How do I set up a virtual machine within windows 8.1 pointing to a CentOS 7 installation which I would like to install on the same physical box? I have been encountering all sorts of problems ...
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105 views

LUKS encrypted volume lost upon reboot

Using this guide I encrypted a volume and am able to open and mount it manually. The problem comes after rebooting. On startup the system does not open the encrypted volume, nor is the decrypted ...
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91 views

CentOs 6, rsync/scp of big file stop at 40% (2.4G)

I'm trying to download from the remote server to local laptop a big file (~5G), but the download stops at 40% of the size (2.4G). I'm using this rsync command: rsync --bwlimit=1200 -rh --progress -...
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87 views

Move /home on Centos 7

I need to move my /home to /dev/md3 because I need more disk space for it, but I don't know how to do that. I copied the contents of "/home" to "/var/home", but I do not know how to assign "/var/home" ...
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478 views

How do I run Asterisk as user other than root?

I compiled Asterisk 11 from source as user root on CentOS. Now I want Asterisk to run as user asterisk group asterisk. I have uncommented AST_USER="asterisk" AST_GROUP="asterisk" in /etc/sysconfig/...
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372 views

centos7 not installing mysql

I've installed centos7 recently, but, when I am trying to install Mysql using the command: yum install mysql-community-server I keep getting Exiting on user cancel while I am not hitting any ...
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225 views

Samba ports still closed even with iptables rules flushed and disabled

I’m trying to install Samba on a server running CentOS 6 with WHM/cPanel, and I’m having some trouble with ports. This is a brand new system as of yesterday, and I haven’t yet started locking down ...
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25 views

create and run bash script on start of runlevel5

I have created a following hello bash script: #!/bin/sh echo "Hello Run Level 5" I put this script in the /etc/rc.d/rc5.d directory with a name S100RunLevel5. How can I make this script to run ...
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26 views

Make a group be able to run shutdown command without entering a password (CentOS)

I used the command visudo -f /etc/sudoers to edit the sudoers file. How do I make a group be able to run the shutdown command without supplying password?
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1k views

How to fix when installing puppet client on centos 7 with dockerfile getting Error: Package: ruby-augeas-0.4.1-3.el6.x86_64

I'm trying to install puppet-client on docker centos-latest with this dockerfile # Base OS FROM centos # Install puppet ENV PUPPET_VERSION 3.7.3 RUN rpm --import https://yum.puppetlabs.com/RPM-GPG-...
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71 views

How to run /etc/init.d/functions without rebooting?

I added a line to /etc/init.d/functions and I want everything in /etc/init.d/functions to be run without me rebooting. Is there a way for me to do this?
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131 views

Resolve hostname of a Centos 6.5 dedicated server with a FQDN registered with Godddy

I have a domain registered with Godaddy and I am setting up a dedicated server for learning purposes. I want the server's hostname to be resolvable. I created custom NS records (ns1.mydomain.com & ...
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88 views

How do I attach running lftp process

I have lftp process running for days at a time on a CentOS machine. I read the lftp man pages and discovered the attach command. However when I call it with the respective process id from the lftp ...
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55 views

Setup https and http on wordpress nginx

[root@serv01 nginx]# cat nginx.conf # For more information on configuration, see: # * Official English Documentation: http://nginx.org/en/docs/ # * Official Russian Documentation: http://nginx.org/...
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101 views

Sub-domains keeps redirecting me to Main web-site

I have just upgraded my version of LAMP Environment. Rest all the things are working fine but with Sub-domains i have a challenge. I have a Main website abc.biz and 5 to 6 sub-domains with it as aaa....
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17 views

Get Logical Volumes Group name in legacy grub

I am currently in GNU GRUB v0.97 Restore mode and I have CentOS 6.5 installed with /boot partition separated and rest of filesystem is in Volume Group. But, I dont remember volume group name, is there ...
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470 views

Debian user learning CentOS: how to install this package?

After always having worked on Debian I now have to use some CentOS servers. I need to install a package which I always install on Debian servers using sudo apt-get install python-zbar. So I tried ...
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3k views

ssh: connect to host * port 22: Connection timed out

I have CentOS 7 running on a VPS machine and after a computer restart, I could no longer SSH to it. $ ssh -v <IP> OpenSSH_6.6.1, OpenSSL 1.0.1e 11 Feb 2013 debug1: Reading configuration data /...
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1answer
14 views

Dozens of ssh-agents listed under top

I noticed this morning that our server was running slow so I ran a Top command sorted by mem and found a few apache instances running nothing out of the ordinary but I noticed several pages worth of ...
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210 views

CentOS 6.5 fail on install

I've tried to install centos on my pc and the installer throw the following error: Formatting Failed An error was encountered while formatting device /dev/sda1 Details: invalid device especification ...
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1answer
650 views

How can I disable FTP access for users

I want to temporarily disable the FTP Access of the FTP users which are added from Cpanel I have tried chsh -s /sbin/nologin aadmi which says "chsh: user "aadmi" does not exist." Tried sudo echo ...
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1answer
91 views

Im trying to adjust my httpd.conf file on my server but cant find it

I'm trying to make changes tot he httpd.conf file on my server so i can have multiple websites on my magento platform however i am unable to find said httpd.conf file. I'm using centos 6 and Apache ...
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1answer
221 views

Nagios configuration to monitorize virtual machine using Hyper-V with NAT

I will start by thank you very much for any help that i may possible have from any of you. I have a centos box that have nagios installed. I'm able to monitor several servers so far but I’m stuck in ...
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399 views

Installing CentOS from bootUSB with two ISO files

I want to install CentOS upon Windows 8(dual boot) replacing Ubuntu 11.04. I have two ISO files (dvd1 and dvd2). Suggest me ways to install the OS from USB. I tried using Unetbootin but it is not ...
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1answer
162 views

How do I stop recurring error messages from appearing in messages and auditd.log?

On my CentOS linux machine, in my auditd.conf file, I have set my max_log_file_action=keep_logs. However, in my /var/log/messages and /var/log/auditd.log, the following message appears multiple times ...
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380 views

Using dnsmasq with KVM

I just installed KVM on a CentOS 7 x64 minimal installation version at home. And I got a problem when the guest is trying to get an IP from the internal DHCP server from KVM (dnsmasq). I already have ...
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1answer
479 views

Install Lotus Domino on Centos

I'm trying to install a trial version of Lotus Domino (from this official download page) on a Centos machine. I'm following this instruction page to install Lotus Domino. But when I'm trying to ...
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1answer
103 views

Unable to get kickstart file from http webserver?

I'm trying to get a vm up using a kickstart file. However, whenever the virtual machine initalize, it says it is unable to located the kickstart file from the location provided. Code to build vm: ...
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1answer
730 views

install php-fpm on centos after remoe it

i install php-fpm and php-mysql and nginx then i remove it and update servers kernel. now, when i want to install php-fpm ,.. dont install $>uname -a 2.6.32-504.3.3.el6.x86_64 #1 SMP Wed Dec 17 ...
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104 views

Switch Server to use GCC version 4.8.1

I'm banging my head against a wall, I followed the instructions detailed here: http://superuser.com/a/677640 When I ran yum install devtoolset-2-gcc-4.8.1 devtoolset-2-gcc-c++-4.8.1 this was the ...
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1answer
93 views

Unable to set up name servers

I've set up a server at my house running cPanel and CentOS. I'm unable to point a domain to the server using nameserver's. I can how ever point it to my server using an A record. I've set up port ...
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75 views

CentOS bashrc function to email on login

I've a system setup where an email is sent on a user login (line from .bashrc): printf "user details, ip etc" | mail -s "[LOGIN NOTICE] `hostname` - `whoami`" <admin>@<domain>.co.uk ...