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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Minimal Desktop to Centos 7

I am running a very low RAM (1 GB) system and I have the minimal centos 7 installed on it. Now I need to use a window manager and I cant find the lightest. GNOME, KDE... are too heavy. I just want to ...
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25 views

how do I ssh from a vm to a private server through an ethernet cable?

A devbox has Windows 8.1 as the host OS running VirtualBox and a virtual machine with CentOS 7 for development. The devbox is connected to a CentOS 7 development server through an Ethernet cable. The ...
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ESC key does not work for whiptail on CentOS / Fedora

I have a problem with one of my shell scripts. The script starts with #!/bin/bash. It is an installation script using whiptail. I really need the 'ESC' key for at least a whiptail box using the ...
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11 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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1answer
36 views

how do I set up a wired 1 to 1 network connection between two computers?

I have two computers connected by an ethernet cable. One is a Windows 8.1 devbox, and the other is a CentOS 7 development server with only a terminal interface (No GUI). The development server will ...
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11 views

systemctl do something between stop and start during restart or kill

I have a C++ program that runs as a non-daemon (but could be changed), and I'm controlling it with systemd. That works. Albeit with the ugly that to restart it I need to either be root (to use ...
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1answer
14 views

Centos 7 , cant update kernel

I am running centos-7(vm) on http://www.ovh.com/. My kernel version is 2.6.32-042stab108.8. Even after yum clean all && yum update and reboot. still kernel version is 2.6.32-042stab108.8. Any ...
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Enabled FIPS on a luks encrypted CentOS system - boot password not longer recognized

I have a CentOS VM instance which was software encrypted during install. The system booted fine (after entering the boot decryption password). My project requires enabling FIPS for OpenSSL, so I ...
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11 views

LAMP Setup on CentOS at DigitalOcean

I'm following this tutorial. I got some issues start from step four: Configure Nginx to Process PHP Pages. After I typed this $ sudo vi /etc/nginx/conf.d/default.conf. I can't find server { listen ...
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1answer
18 views

How can I use Pacemaker to setup a virtual IP for receiving syslog messages?

I need to setup a VIP / floating IP that network devices will send their syslog messages to. The idea behind the VIP is to have a highly available setup in an attempt to minimize the amount of logs ...
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1answer
31 views

openproject package install error on centos 7 x64

Running transaction Installing : openproject-4.2.6-1439479767.f7bca92.centos7.x86_64 1/1 Error unpacking rpm package openproject-4.2.6-1439479767.f7bca92.centos7.x86_64 error: unpacking of archive ...
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12 views

virtualbox stopped sharing mouse and clipboard between host OS and VM

I have virtualbox 4.3.28 installed on MS Windows, with CentOS installed in a VM inside virtualbox. For some time, I have been able to share the mouse and the clipboard between the host OS and the VM ...
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16 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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2answers
18 views

Linux CentOS 7 printer installation, what is the hpps program?

I just installed Linux CentOS 7 on my laptop. I tried to install my local printer, but it does not work. At the end of the configuration process, the system shows a window stating: Printer ...
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Command line for centos' user password

I need help for password administration on Centos. Well, I have CentOS' users and I want them for setting up their own passwords, so I want a command executed from root to allow them to set up their ...
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21 views

SSH connection closed after SSH2_MSG_SERVICE_REQUEST

My SSH connection is being closed just after this message: debug1: ssh_dss_verify: signature correct debug2: kex_derive_keys debug2: set_newkeys: mode 1 debug1: SSH2_MSG_NEWKEYS sent debug1: ...
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23 views

formatting output in bash shell to remove special characters - linux

I am issuing the command below against a logfile grep "Oracle Audit" /var/adm/messages | awk '{print $6}' How do I format the below output Audit[9460]: Audit[10507]: Audit[10507]: Audit[10507]: ...
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9 views

SASL fails to auth against LDAP

So I am running into a whirlwind of issues with my cyrus install. I am setting up a multi-domain kolab groupware solution. I am on centos 6.7 I am getting this flooding my error logs when I try to ...
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24 views

Problems with postfix and sending mails

I have ran into problems while configuring my postfix for my CENTOS machine. Note:The mailserver itself should be localhost only and only be able to send mail internally. the following shows up when ...
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7 views

VirtualHost adds extra url

So I have two domains: site1.com and site2.com. I pointed site1.com normally to my ip and it works, the directory is /var/www/html but I can't get site2.com to work with /var/www/site2 ...
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13 views

Make xmodmap Changes Permanent

I made some changes to my keymap by writing: remove mod4 = Super_L add control = Super_L in ~/.Xmodmap The changes work after running xmodmap ~/.Xmodmap But they will not stick after restart. I ...
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7 views

Terminal Text looks weird on Centos on Virtualbox

I just installed Centos6.7 minimal on virtualbox, after I installed the 'Guest CD Additions', now the resolution hasbeen dramatically improved to 1858-1016, however everything looks good but the text ...
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11 views

perf requiring elfutils version .158 on centos5, instead of .157 or .161?

I'm on centos 6.5. I have perf version 2.6.32 installed, along with elfutils 0.161 and devtoolset-2-elfutils 0.157. When I run perf, I get the following error: $perf perf: ...
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1answer
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CentOS Yum Not Finding Packages

Just installed CentOS and am trying to install exfat-utils and fuse-exfat but yum says "No package .. Available" for both when I try "sudo yum install exfat-utils." Maybe I am missing some ...
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26 views

CentOS 7, how to install the “show desktop” button?

I just updated my CentOS machine to CentOS Linux release 7.1.1503 (Core). I really need a "Show desktop" button that allow me to turn down all the windows and just see the desktop, when I want. I'm ...
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Why did rsync removed files from my source directories?

I generated a subset of files to copy and saved it into tocopy.txt. Then I ran: rsync --progress -v --checksum --itemize-changes -r -a -z --files-from=/tmp/tocopy.txt user@server:/destination ...
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1answer
71 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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3answers
22 views

Backup linux workstation command

So I'm what you'll call a "almost" noob when it comes to linux. I recently started working on a CentOS workstation and I know there's a lot of customizations on it from the other user. I also know ...
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31 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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CentOs How to run a command based on performance drop?

centos script automation I'm looking for a way to execute a command (in my case something that drops all connections that are mot Italians) when my server's performance drops and it starts lagging. I ...
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CentOs How to run a command on performance drop

I'm looking for a way to execute a command (in my case something that drops all connections that are mot Italians) when my server's performance drops and it starts lagging. I looked at inotifywait ...
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10 views

Tuleap - Very long response time

We observe very long repsonse time ( ~ 1 minute) in our installation of Tuleap on the configuration as follow : Tuleap version = 8.3.99.4 OS = Centos 6.6 VM : FLex'server 4 cores, 4 Gb ram. We ...
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How to use column command to display continuesly output?

I want to use column command to format the output of some program in realtime,but the column command won't display anything until the output has ended. Just like this tail -f resin-stdout.log|column ...
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45 views

-bash-4.2$ for command line?

I don't know why when I SSH with putty onto my VPS, my command line starts with: -bash-4.2$ It hasn't ever been like that, it was myname@localhost Only thing I have done different in the last 24 ...
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1answer
29 views

Unable to boot to Windows Vista after reinstalling Linux in a dual boot configuration [closed]

I had a dual boot of Vista and Arch Linux. I wanted to delete Arch and install CentOS so I formatted the following partitions of the existing installation and installed CentOS 7: / /boot /swap I ...
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23 views

php-fpm -y /etc/php-fpm.conf -R Only works during current run?

So I am trying to solve the FTP Credentials problem in Wordpress from ever occuring again it seems my problem lies in php-fpm. This here is my www.conf for php-fpm: [www] listen = ...
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77 views

CentOS 6.7 ping: unknown host google.com

I tried following this video on creating a cluster of vmWare machines. When creating the very first machine I follow all the instructions, which are: clean install CentOS 6.7 and then follow the ...
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mkfs.xfs large number of small files

I have small mail cluster ( 6 nodes, GlusterFS ), user mails ( ~2.5k ) will be stored on SSD ( 200Gb ) whith XFS. What is the best options for mkfs.xfs to get maximum I/O performance. No RAID uses! ...
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22 views

How to use multiple monitors to display multiple workspaces with vnc?

I know this question may have been answered/asked before, but I haven't been able to find a definitive answer, so here I go and apologies if this is a repetition: Q. I have a vncserver running on a ...
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14 views

coovachilli authentication with radius server

I have built coovachilli on my router , Now the problem is that I'm not able to communicate with the radius server which is running on my system . can anyone provide me a detail description how to ...
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1answer
20 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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23 views

Enabling FIPS for openSSH causes freetds to not work

I have two CentOS 6.7 machines (server A and B). Same package versions are installed on each system. Last week I enabled the openSSH FIPS 140-2 module on Server A, and that system works flawlessly ...
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51 views

Creating a Centos 7 iso with kickstart

I wish to create an iso file containing Centos 7 x64 for unattended/kickstart installations. For Centos 6, it worked like a charm. But for Centos 7, i am not able to create a bootable iso image. This ...
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2answers
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How to use openssh

I have two servers, A and B. A is a Windows 2003 server and B is a CentOS 7 server. I installed openssh for windows on A, but I don't know how to set B's ssh_config so that I can connect to B from A ...
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Centos7 can't connect ot Internet but IP & ssh from local works

[if this is too long you can read from the bottom] Hello previously i have this Centos7 and it worked fine with the internet connection with static IP. The problem started when i installed GUI, ...
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1answer
16 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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42 views

Tuleap - Trackers - Can't edit artifacts

It is impossible to have the little pencil to edit artifact after creation. I can create an artifact, but after that I can't modify it. I tried all what is available in config to properly set users ...
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1answer
25 views

Install Python on Centos

I have some scripts on my server that I to run when the url is loaded so I have been looking around and I'm not sure but from what I can tell I want to install apache python? Because right now I have ...
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CentOS 6 - Preventing people from accessing certain files?

So I have my CentOS 6 server, which is nice and good. But for some reason, people can always access my board's files and download them, such as http://mariomansion.net/templates/pagelayout.tpl If you ...
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31 views

My harddrive partitions are lost during attempting to install centOS 6.6. How to get back?

I had a windows 7 installation. I wanted to dual boot with centOS. So I separated a space for centOS and created root and swap areas. Then I installed centOS 6.6 normally. But it was not dual ...