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

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SSH key authentication works with /usr/sbin/ssh -d, does not with the daemon?

CentOS x64 6.5: if I connect as root to my server and do the following: service sshd stop /usr/sbin/ssh -d I'll able to connect as user using public key authentication from my development machine: ...
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57 views

How to find the cpu and memory usage of child processes

Supervisord is running on centos server. If I do ps -e -o %mem,%cpu,cmd | grep supervisord | awk '{memory+=$1;cpu+=$2} END {print memory,cpu}' I get 0 0 just because supervisord is just an ...
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57 views

How to Resolve a .so Dependency

I have a package (.rpm) on CentOS 6.5 that requires a .so file, which I also have on my machine. When I attempt to install the package I get an error stating unresolved dependencies regarding the .so ...
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57 views

How not to write kernel warnings into /var/log/messages?

I keep getting these log warnings due to a bug in kvm. Jun 30 19:12:31 server kernel: kvm: 28882: cpu0 ignored rdmsr: 0x345 Jun 30 21:12:31 server kernel: kvm: 31191: cpu0 ignored rdmsr: 0x345 Jun ...
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28 views

CentOS as an xterminal

I have recently built a new VM on my CentOS 6.5 system. The VM has Ubuntu with ROS, the robotic operating system on it. I just wanted to experiment with ROS and I've been running some of the ...
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57 views

Switch Maven version after installing from jpackage?

I've installed maven3 on CentOS from the JPackage repository. Problem is my installs also seem to have pulled in maven2 which is the default. Is there any way to switch /usr/bin/mvn to be maven3? ...
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23 views

Unable to access external content with this IPTABLES ruleset

My application server is on a network protected by a organization wide firewall, and my server is also using fail2ban. That said, I'd like to set up an additional layer of protection with iptables. ...
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143 views

problem with unique ssh public/private key pair on second user

I have created an ssh key pair using ssh-keygen -t rsa for my main user and everything seems to be working well. Password login has been disabled. I have a second user that I am trying to create a ...
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139 views

CentOS 5 - hdparm - how to set DMA mode

I'm running CentOS 5 with a PATA hard drive. I've used hdparm to tune the hard disk for better performance, but there are 2 settings that don't work: hdparm -M 254 /dev/hda gives the error ...
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112 views

yum update baseurl error

I am new CentOS, I tried to install openssh using yum -y install openssh-server openssh-clients which resulted in Loaded plugins: fastestmirror, refresh-packagekit, security Loading mirror speeds ...
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204 views

ioctl: invalid argument for HDIO_GET_IDENTITY

I wrote a program to get the details of hard disk drive using HDIO_ ioctl calls. For writing program, I'm referring Documentation/ioctl/hdio.txt in kernel source(2.6.32). Here is my main part of ...
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488 views

System Halt on REBOOT, Shutdown & Restarts as expected

Recently went from Centos 6.4 to Centos 6.5. System is Dell T410 Tower. Whenever I reboot, system runs through post, passes IPv4 Settings, then announces: PCIe Training Error: Slot 1 system halted ...
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62 views

How would I auto click for a Centos server?

Is there any way to do auto clicking on CentOS? I have tried googling for a simple auto clicker and couldn't seem to find any (yet Ubuntu seemed to have promising results). Is there any well known ...
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800 views

New local user can't login to vsftpd

I'm a bit puzzled with this one and could really use some help. We have a CentOS 6 box running VSFTPD as a dropbox for our customers. Each customer gets a local user and is chrooted to their home ...
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255 views

Apache fails to start after changing cert and key

The problem appeared after I changed https certificate and key. sudo /etc/init.d/httpd restart shows this: Stopping httpd: [FAILED] Starting httpd: [FAILED] Apache's error_log: [Tue Dec 03 ...
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103 views

Can only get one network to be accessible from outside

So here's a quick overview of my setup: I purchased a new Mac Mini server and I am hosting it with a Mac Mini co-lo facility. At first I had them keep OSX installed and I was using VirtualBox to ...
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316 views

Centos6.4 Kickstart stuck at %POST

I have the below kickstart %post, but it hangs at the Post Installation Screen. Any thing I had missed or done wrongly? Thanks. %post --log=/root/my-post-log ( echo "# Running Post Configuration #" ...
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314 views

ERROR: could not find driver after changing from mysql to mariadb

mysql was working fine but I wanted to give mariadb a try on a new server I have going. However I am having an issue where all my php websites seem to have issues communicating with mariadb. Webmin ...
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62 views

MySQL 3.23 on Centos 6?

Don't ask why, just is it possible to install old mysql 3.23 on new CentOS 6.4 i386 or x64 version (same to me)?
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373 views

Can't find vgaswitcheroo directory in CentOS6

I've installed CentOS6 on my laptop, which has a built in VGA and a discrete (AMD) VGA. I used to switch AMD video off in other distro's (e.g. Fedora, Arch) using: $ echo OFF > ...
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104 views

How can I create cron jobs in specific files?

I want to have a separate folders for cron jobs like: /mydata/cronjobs Now in that folder I want to have files like backup_server which will have the content like: 30 3 * * 1-5 ...
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178 views

Bonded Interface Pair Performance Difference b/w CentOS 6 and RHEL 6

I have two new dell servers, both pretty close to the same hardware. One has RHEL6 installed and one has CentOS 6 installed. I have the machines configured identically from a network-scripts, ...
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130 views

Scrambled Xen Console on dom0

I installed Xen using the recommended procedure on Ubuntu's site using motherboard Supermicro X7SBL-LN2 and Ubuntu 13.04 amd64. After the installing it and rebooting my console looks like this: ...
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2k views

Installing Dovecot and Exim on CentOS 6.4

I've been looking for some guides on setting up a secure Dovecot and Exim mail server setup on CentOS 6.4, however it seems there's nothing out there. Does anyone know of any guides - or - if someone ...
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269 views

User gets rejected after system crash on CentOS

The power went out on my PC running CentOS 6.3 while I was logged in as a regular user. Since then, when I try to login from the GUI, my screen flashes to black then returns to the login screen, ...
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199 views

security concern around adding cron user to web application group

I have a permissions issue on my CentOS 5.6 machine with regards to the cron user. On my test/staging environment my cron user (picco-cron) is a member of one group - picco-cron, as below: ...
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104 views

mouse in midnight commander works only under root

I posted a question a little time ago about mouse that doesn't work with terminal, and then I remarked that mouse works fine, but only under root. Can I change this behavior? It seems i need to ...
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216 views

Runtime User Privilege Management ColdFusion on CentOS cPanel

I'm needing to understand the correct workflow for managing permissions to allow the ColdFusion 9 runtime user {coldfusion} to have access to user accounts. The germane elements ... Centos 5.8 WHM ...
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898 views

Setting up SMTP-AUTH & TLS in Postfix

So I have been in the process of installing a Postfix Server on my CentOS 6.2 Virtual Private Server. I have been following this tutorial: ...
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1k views

Ffmpeg problems on centOS 5.8 64 bit

I did install ffmpeg with winff, unsuccessfully when I try converting avi to x264, it says I don't have it. When I try to convert mp4 to Xvid I get unknown encoder 'libxvid'. It's like nothing really ...
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651 views

Any better alternative to chroot on an OpenVZ VPS?

Are there any better alternative to chroot environment? I'm thinking about running nginx on a jailed environment. BTW, I'm on OpenVZ VPS, so modifying the Kernel is a no-no. (I think that prevents ...
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17 views

Centos VFS cannot open root device

Yesterday I did a kernel update on a virtual machine. When I restarted the machine unfortunately I got the error Kernel panic - not syncing VFS After some searching I found out I should go to GRUB ...
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Grub not Recognizing XEN Kernel on Boot

We are able to successfully install and boot to a XEN kernel on 5 of our 7 eucalyptus node controllers. The last two are having the same problems despite running an identical installation process. ...
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48 views

autorun a linux program on startup from a non-root user in centOS 6 64bit

I have a software that needs to be run via specific user "non-root" hence its home directory is /home/non-root/, I have to emphasize that the program must not be run via root and must only run after ...
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54 views

Apache Virtual Host Include Not Working

Attempting to get my domain to redirect to the associated vitual hosts, but the Include is not working as expected and displaying the proper htdocs directory. It is still displaying the default apache ...
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83 views

Centos 6.5 from Desktop to basic server

I have already installed centos6.5 on a virtualbox, and I realized that I missed choosing the the basic server mode,can I change it now that the installation is over ?
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I try to setup zabbix server on CentOS 6 (close system) but can find zabbix-server binary file after run rpm install rpm package

I try to setup zabbix on CentOS 6 in closed system ( no internet connection ). So I can only put rpm to that machine, and run command rpm -ivh zabbix-2.2.3-1.el6.x86_64.rpm ...
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38 views

How to add TileStream in autoload CentOS

I'm new with CentOS. I have a installed tilestream. Now want to tilestream start automaticaly after system restart. Do like this tutorial. /etc/init/tilestream.conf #!upstart #description ...
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39 views

How to start the Snort service with logging enabled?

I setup snort on Centos server and add as a service. When I use service snortd start command, the log file is created but it is empty. If I use snort -q -l /var/log/snort command, the log file created ...
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38 views

How to reconfigure PHP

We have a new linux server CentOS 6.5 with Plesk. Default PHP is 5.3.3, I have installed PHP5.4 & 5.5 on the server. I am a beginner on linux. Actually, I don't know how to install software on ...
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61 views

Can I install libXcomposite.so without the root permission?

I got this error when I execute dropbox on CentOS. ImportError: libXcomposite.so.1: cannot open shared object file: No such file or directory I don't have a root account. Output of uname -a: ...
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433 views

mcrypt, EPEL and CentOS 6.4

I am having issues installing php-mcrypt. I am not an administrator of any level. I have performed the following. Installed EPEL Installed REMI Configured EPEL Updated YUM Cleaned YUM Installed ...
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38 views

Building rtmpdump on RHEL x86 without yum and no root rights

I have an ssh connection to a RHEL x86 machine, and I can't use yum and I don't have root rights. Is there a way to still install rtmpdump? By looking at this tutorial, it seems that installing ...
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280 views

Transfer files from CentOS VM VirtualBox to Windows host machine

How can I transfer the scripts and text files I've created in my CentOS environment and put it in my host desktop (Windows 7)? I've tried using ftp but it needs to configure the routers to use vsftpd, ...
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67 views

Rooting Linux via mysql

I have a CentOS 5.6 x86 installed. I have full access to mysql but it seems I have forgotten Linux root password. How I can access the root via MySQL? Is it even possible? Update: MySQL Version is ...
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229 views

Centos 6.5 iconv 2.5 glibc

I'm using Centos 6.5 x64 for developing purposes. I need to install iconv 2.5 but could not find how. Centos 6.5 glibc version is 2.12 On Centos 5.9 glibc version is 2.5 Why newer Centos uses older ...
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i2b2 VM: Copy VM won't give me a valid IP address (CentOS 6.5 running with VMWare Player in Windows)

Posting on here as well in case this was the incorrect site to post the question. http://serverfault.com/questions/595337/i2b2-vm-copy-vm-wont-give-me-a-valid-ip-address
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551 views

Empty desktop after installing xrdp on Centos 6.5 with XFCE as window manager

I followed the directions to install xRDP from this site (http://ajmatson.net/wordpress/2014/01/install-xrdp-remote-desktop-to-centos-6-5/) When I RDP from Windows -> Linux, I successfully enter ...
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141 views

How to add Ip Aliases with Two Gateway on same nic Centos

I have 2 allocated address range, example 10.10.12.25/28 10.12.12.24/28 How to add Ip Aliases with Two Gateway on same nic with Centos?
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219 views

Can't yum WINE from repo - No package wine available

I'm trying to install WINE on Centos 5.10 as per some instructions I wrote last year using this instruction: # yum install wine However when run, it can't find any package under that name: # yum ...