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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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
8 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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6 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
18 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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19 views

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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15 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 ...
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1answer
23 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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10 views

How to set proxy server Squid on CentOS multiple connections for download

I am now using Cent-OS and i have installed squid proxy server completely. The problem i meet is when I use Internet download manager and set proxy) to download a file, Internet download manager could ...
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1answer
13 views

CentOS 7 image naming conventions

I'm looking at the following on CentOS 7: boot$ ls config-3.10.0-229.7.2.el7.x86_64 config-3.10.0-229.el7.x86_64 grub grub2 initramfs-0-rescue-9fde7dd9a7884e1b8fdef68620955b36.img ...
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2answers
42 views

date. hwclock keep showing wrongly everytime after reboot

Edited question to better reflect situation. (My hwclock and date is not showing correctly) I am on +GMT 8 and i have set my hwclock to localtimezone by doing the following rm /etc/adjtime ...
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36 views

Memory Usage of `yum update`

I was updating a slightly out of date server with yum update and ran into memory issues. It appears that yum requires enough free RAM to download each package. Updating single packages was not a ...
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2answers
18 views

Centos 6.5 directory size is incorrect using du command

I 'm running the du command on one of my websites directories and I'm getting 2 different result, I'm confused which one is accurate and why there is a big difference, here both command and the ...
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23 views

Add a package(RPM) to CentOS ISO

I'm having some trouble trying to install CentOS 7 (Everything iso version) on my Laptop with OSX Yosemite installed (Hackintosh). The error prompts when starting installation because it looks for ...
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3answers
39 views

how to insert a text file in hosts.allow or hosts.deny?

So I read in man page of hosts.deny that i can input files in /etc/hosts.allow or hosts.deny to input ip addresses which i want to block or deny. So i tried doing this in hosts.allow sshd: ALL ...
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2answers
30 views

how to gzip and scp at the same time

I have a file in which i wanted to zip up and at the same time transfer over to another host using scp. I tried to do the following command but failed. I do not mind zipping up and scp over later, ...
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1answer
31 views

Simulate a serial port that actually is an internet port [closed]

In CentOS, how do I make a fake USB serial port that is actually an internet port (like port 80 for http)? Edit: I'm sorry that I didn't make it clear. I'm trying to make a server-side compiler and ...
2
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1answer
19 views

CentOS - Trying to backup/restore a MySQL database?

My CentOS 6 server got a server issue, so customer support took a backup of my server and reinstalled it. The backup is in a folder called /home/42406. I'm trying to find my MySQL database called ...
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4 views

Execute script on failover Corosync Pacemaker

I'm searching to execute script on failover with Corosync Pacemaker. I use Centos 7 with pcs, I have 2 server master and slave. I used a copy of Dummy script and this is my code; <shortdesc ...
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13 views

CentOS - Mouse and keyboad do not work after deleting /var/cache

My mouse and keyboard do not work anymore in CentOS 6.5 after I deleted /var/cache and restarted my PC.
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14 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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1answer
31 views

What's the equivalent of .bashrc for CentOS?

By configuring ~/.bashrc as desired, each time the user logs into their bash shell the configured settings (of .bashrc) will automatically be set. Now I must be missing something but despite thorough ...
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37 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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1answer
93 views

How can I install CentOS on the Windows Intel Compute Stick

Intel Compute Stick comes in two versions: one with Windows 8.1 and one with Ubuntu, but the Linux version has half the RAM and far less internal storage and nearly impossible to buy. So I am ...
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29 views

How do you setup SCM Manager to use SSL, and not run off of port 8080?

I am trying to use SCM Manager to host a Mercurial repository, running off of a CentOS box, and the accessing machines are Windows 7 (if it matters). I have gotten the default setup to work, however I ...
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23 views

Changing I/O scheduler for SSD

I have many CentOS systems, some of them have traditional hard disks, some SSD, and some mix of them. I would like to change scheduler for SSD to deadline. So at runtime I can simply scan check ...
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20 views

Connecting via windows remote control to Centos(Xrdp)

I'm having a problem of printing text in code editor via rdp. I think problem a rise a specially using shift + key and F1- F6 keys, for example: When trying to print ":", I usually get: ...
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16 views

PostgreSQL and database cluster ownership on shared storage

For my research, I am using an always on virtual machine for the primary analysis of my data. In doing this I need (or, I suppose, would like to) create and store the data in a PostgreSQL database. ...
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14 views

How to install and configure Nagios-MNTOS? [migrated]

I just tried to configure MNTOS for my 2 Nagios server. I'm very new to this tool. I do not get a clarity on the installation. Should i install MNTOS on a separate server or any of my 2 Nagios ...
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18 views

Centos second router. After ~ 1 day no internet whole network

I have a weird situation. I have a TWC home internet line connected to a motorola sb6141 to a Linksys EA6300(w/ ddns) connected to a centos home built router I use for a second protected network ...
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1answer
31 views

Removing /tmp partition, what will happen?

We have a CentOS 6.6 server running, which is using a Raid0 on SSDs for the /tmp mount point (used for fast i/o). These SSDs need to be removed from the server, so the device where /tmp is pointing ...
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1answer
50 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 ...
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17 views

Postfix install fails. MySQL conflict

I'm using CentOS 6, and trying to create a virtual mirror on a new server of an old one (which someone else setup). As much as possible, I want keep everything with the same version, but I've started ...
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1answer
21 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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1answer
29 views

Accepted publickey for userx from y.y.y.y (ssh authentication)

Server A and B is setup for autoSSH I am on ServerA (y.y.y.y) and is accessing ServerB. I understand that A's public key is store in B and is use by B to encrypt the challenge to A when A connect. ...
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1answer
17 views

“yum update” failed in Cent OS 6.4

Got strange error on Cent OS 6.4. I started a new Cent OS 6.4 and here is what I got: # yum update Loaded plugins: fastestmirror, security Loading mirror speeds from cached hostfile Error: Cannot ...
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1answer
42 views

redirection - why it doesn't work this way

I know there are 3 streams attached to a process when it is run namely the input, output and error stream. And redirection execution work from left to right. I intend to execute a command, redirect ...
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0answers
28 views

How to disable XAMPP/Apache from returning server IP address along with ServerSignature?

I am trying to configure a webserver on CentOS 6.4 using XAMPP. The only problem I am facing is that I don't seem to find a way to disable the server from returning server IP address along with ...
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2answers
35 views

bash script.sh vs ./script.sh vs #shebang

Assuming i am in a bash shell now and i execute the following [me@server]$ bash script.sh q1) Is a new child bash process created to execute the script ? If i do a [me@server]$ ./script.sh q2) ...
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1answer
49 views

Cannot SSH to localhost without password

First off, I want to say that I've tried everything in this question here, and it didn't help me: How to SSH to localhost without password? I had a file permissions issue recently because I don't ...
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0answers
94 views

OpenVZ fails on container create (Unable to get appcache tarball name)

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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1answer
41 views

application that uses xforwarding fails unless I use xhost +localhost

I'm connected to a remote system over nomachine enterprise. We use an internal application that I believe is essentially xforwarded from another machine as I run it - it runs there, and outputs the ...
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2answers
41 views

How can I put my CentOS on public IP so that I can access it WinSCP from home?

I have a centOS system at office and I want to access it from home via WinSCP. I have a static public IP at office. Please help!
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1answer
42 views

PuTTY working, Terminal SSH is not (with Private Key)

Setup a new server (on Rackspace), got it working in PuTTY/KiTTY. When I run from terminal (Cmder), it asks me to enter a passphrase (which PuTTY doesn't), I hit "enter" (there is no passphrase), ...
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1answer
41 views

Unable to view contents of directory on Linux server via FTP, or using “dir” via shell, able to find files within directory nonetheless

I have a directory on my Linux (CentOS) server which serves as a repository for uploaded files from a webpage. I noticed I was not able to open the file using Filezilla via FTP (was formerly able ...
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0answers
10 views

How do you get CentOS 6 to auto detect changes to NICs?

So, here's my issue. I'm managing many CentOS 6 based virtual machines, many of which are expected to be shared between different developers and some even are to be cloned and launched on central VM ...
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1answer
25 views

Error with command cut: the delimiter must be a single character

I am trying to run this command from console: # HTTPDUSER=`ps aux | grep -E '[a]pache|[h]ttpd|[_]www|[w]ww-data|[n]ginx' | grep -v root | head -1 | cut -d\ -f1` But got this error: Try `cut ...
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3answers
82 views

difference between ${} and $() in shell script

$ echo $(date) Thu Jul 2 16:33:11 SGT 2015 $ echo ${date} $ name=foo $ echo $(name) ksh: name: not found $ echo ${name} foo Seems like ${variable} is the same as $variable. while $() is to ...
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41 views

shell script finish but doesn't exit

I have 2 shell script a.sh and b.sh which is running under ksh. a.sh does the following action #!/bin/ksh some action check condition and send email if fail or success call b.sh b.sh does the ...
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23 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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6 views

Application icon in Gnome 2 panel

I am using a closed source application on CentOS 6.6. The application comes with a wrapper bash script, that sets some environment variables and then executes the actual binary. I have created a Gnome ...