Questions specific to the CentOS Linux distribution. Use this tag if your question relates to how the CentOS distribution affects your problem; do not use it if you just happen to be using CentOS and your question is about a specific configuration detail or syntax.

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Initialization Sequence Completed, but terminal wont give a prompt

I just installed openvpn on a remote CentOS 7 server using the instructions in this tutorial. The only change I made to the tutorial was to use @GarethTheRed's instructions for configuring ...
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452 views

Centos, how to install “topicmodels” package on R?

I'm using a Linux CentOS release 6.6 on my laptop, and I've tried to install the "topicmodels" package into my R environment. So I used the install.packages("topicmodels") command but unfortunately ...
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675 views

Faillog command on CentOS7

Although EPEL7 has been installed, faillog seems not to be recognized: [vagrant@vm-one ~]$ faillog bash: faillog: command not found... None of the packages seem to contain the faillog command: ...
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Install SVN 1.8 on Centos 7

I've tried installing the newest version of SVN but nothing is working. On yum there is 1.7. When downloading rpm/zip error occurs when trying to configure. Setting some additional repositories ...
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102 views

downloading sshd logs from remote centos 7 server

When I log into a remote centos 7 server as root, I am able to see the sshd logs by typing journalctl _COMM=sshd in the terminal. But the logs are massive. How can I download all the logs into a ...
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364 views

Running ubuntu binary on CentOS with all shared libs installed results in ld SIGSEGV

I'm trying to get a binary compiled on Ubuntu to run on CentOS 7 (both 64bit, one host, the other vm). So far I've copied the binary with all the shared libs. I no longer get the missing library ...
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2answers
267 views

ifconfig command showing internal ip address

I'm using centOS 6.3 on virtualbox as guest OS on Win 7 host. My problem is when I use ifconfig command in terminal, I'm being thrown internal IP address(10.x.x.x). However, when I googled "my IP ...
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136 views

rkhunter reports /sbin/ip has changed

I am using rkhunter 1.4.2 on CentOS 6.5. A message, in /var/log/rkhunter.log is Warning: The file properties have changed: [09:40:35] File: /sbin/ip [09:40:35] Current size: 247396 ...
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CentOS 6 drbd is not available

In CentOS 6 (6.6), the drbd package is not available, neither from the extras repository. There is some information on the Net, like configure-drbd-centos-6-5, which I assume will work on CentOS ...
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1answer
3k views

Does all packages included in CentOS Everything ISO get installed along the base system?

The Everything ISO for CentOS is significantly bigger than the regular DVD ISO because it contains a lot more packages. Question: are these extra packages all installed automatically when I install ...
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137 views

Configuring Named DNS zones (Centos7), specifically CNAME

having trouble with some DNS configuration, I have managed to get part of the site working, however adding the prefix 'www', I'm finding a little tricky. Essentially, what I want is mysite.net -> ...
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2k views

How to expand an iSCSI lun with targetcli on CentOS7?

I have a CentOS 7 machine with iSCSI configured. see ls output from targetcli below. I want to add disk02 to lun0 so that to the iSCSI client can see a total 869.16GB instead of 392.2GB Question: Is ...
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255 views

Cannot use free space in filesystem

I want to install a program but it says that there is not enough free disk space more than 11 GB although there is. df -h shows: Filesystem Size Used Avail Use% Mounted on ...
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1answer
146 views

Keychain SSH Key Manager prevents SFTP login on CentOS

I installed keychain and added this to my .bashrc in CentOs to help manage my SSH Keys: /usr/bin/keychain --clear $HOME/.ssh/id_rsa source $HOME/.keychain/$HOSTNAME-sh So on SSH login I am prompted ...
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1answer
11k views

Error while loading shared libraries: libdl.so.2 (and others), no such file. Libraries exist

Attempting to install a Java application from a .bin file. When opening the installer from command line, I see these errors: [boxen]# ./ZendStudio-5_2_0.bin Preparing to install... Extracting the ...
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1answer
360 views

Install TFTP-Server without Internet

Due to some company policy, I cannot connect my Centos linux computer to the internet. However, I would like to set up a TFTP-Server, and I saw a tutorial that does this here. ...
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240 views

How do I remove login password for Centos6.5?

Question 1 On Centos 6.5, I have a username called admin. How can I make it so the system logs in automatically? Question 2 How can I configure system to login as root user when there are other ...
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3answers
25k views

How to create a bootable USB with Windows?

How would I go about creating a CentOS 7 bootable USB drive with Windows? I've read the howto page for it and it says that Unetbootin and Universal USB installer won't work for CentOS 7. In addition, ...
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3k views

PC Boots to grub> prompt after putting partition table entries in disk order

I am using Centos 6.5. I tried to get the disk space using fdisk -l | grep Disk What I got was Partition table entries are not in disk order I tried to fix the problem with the method outlined ...
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1answer
1k views

Unable to set partition type correctly using parted

I'm trying to create a bootable USB stick with FreeDos for BIOS updates in Centos 6.5, following instructions from: chtaube.de I created the empty 30MB img file using dd: [root@dumbledore ...
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1answer
2k views

Upgrading kernel 2.6.18 to 2.6.32 on CentOS 5.10

I've been looking on Google for 4 hours and I can't find a solution to my problem. I have a computer running CentOS 5.10 using Kernel 2.6.18-371.9.1.el5 and I would like to upgrade my kernel to ...
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1answer
118 views

Upgrading CentOS web server

Have just taken over control of a CentOS 6.4 web server with Apache. My question is, to update the server software, is it a case of just using yum update and then yum upgrade? Server has been ...
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800 views

CentOS partitioning

I have a CentOS server with two 1 TB disks. However, it is badly partitioned. Please check below: [root@p16282558 ~]# fdisk -l Disk /dev/sdb: 1000.2 GB, 1000204886016 bytes 255 heads, 63 ...
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519 views

Reverse a chmod command on a directory

Is there a way to undo a chmod command on a directory in CentOS ?
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6k views

CentOS 6.4: Unable to mount disc, doesn't like UDF

I'm trying to use a CD on CentOS 6.4, but I keep getting this error: Unable to mount Disc Error mounting: mount: unknown filesystem type 'udf' I've installed udftools I've tried changing the ...
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1answer
2k views

“SELinux is preventing /usr/sbin/openvpn from name_bind access on the tcp_socket”

I am configuring an openvpn server on a new centos 6.5. But the main problem is that selinux is blocking openvpn to use the default port tcp 1194. The following is the sealert -a ...
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1answer
270 views

What linux server settings allow my long running processes to keep running after the terminal is closed/terminated?

In previous jobs and experiences, I used screen or nohup to run my long running jobs from my terminal screen. Most, if not all of my previous jobs' servers dropped you if it didn't detect any ...
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2answers
707 views

CentOS 6.5 applications won't minimize on lower panel

I believe this question is related to something that happened earlier today. Right now, when I press minimize on any Gnome application, it dissappears, is still running, but I cannot get to it to ...
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2answers
2k views

Enable 9p filesystem type in Centos 6 virtual guest?

My question is linked to this one : http://stackoverflow.com/questions/17880460/mounting-shared-folder-in-kvm-vm-error-mount-unknown-filesystem-type-9p (but can't comment it) I have apparently the ...
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1answer
1k views

no irq handler vector

I'm a Linux newbie and I've just installed CentOS 6.4 on my desktop machine. Everytime I start my terminal I get these error messages and I can't figure out why. How can I trace the problem and fix ...
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580 views

No package community-mysql-devel available

I'm trying to get this package because I need it to build software on CentOS 6, but I'm getting this error: No package community-mysql-devel available I'm logged in as root, using yum. Could it be ...
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CentOS 5: My Postgresql server version is different with my psql client. What should I do?

I installed PostgreSQL 9.1 in CentOS 5 x86_64 VPS, with these following commands: I specified which Postgresql version I'd like to install, so I choose 9.1 because I want to equate between ...
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ls recursive on home dir only with no flags specfied other than color [closed]

Like the topic says whenever I am in my home directory and run ls it shows me every file in every folder recursively, I cannot find any documentation of why this would happen, I have been looking on ...
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3k views

Telnet login prompt very slow on Static IP only, possible rDNS issue?

I've switched my CentOS machine from DHCP to static routing, using telnet to connect to it has gone from practically instantaneous, to taking around 30 seconds for the initial login prompt to display. ...
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2answers
3k views

Why FreeRADIUS service won't work on Centos?

I have installed FreeRADIUS server on centos via yum successfully, but I couldn't start radiusd service. when I run as root user and exec the following radiusd -X an error is occurred. [root@userAAA ...
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1answer
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run a php script in centos and time and timeout

I want to run a php script in centos ( /usr/bin/php file.php ), and it takes long time to execute,and in the middle of executing , it stops running , and does not give me any errors. and I'm sure that ...
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1answer
2k views

How to install FileZilla on CentOS?

I downloaded FileZilla from here Now how to install this on CentOS? I used yum install filezilla but it is showing errors like: Loaded plugins: fastestmirror, refresh-packagekit, security You need ...
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839 views

How does KVM set its own netfilter rules?

I've been poking around with KVM VM's on Centos 6.4 and after some hair pulling and copious amounts of trying to break my desk with my head due to not having an internet connection on my VM's, I found ...
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Yum, force the update of dependencies

I have a package with several dependencies. I updated my repo with the given package and his dependencies but when I'm updating the package dependencies are not updated since the required versions are ...
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2answers
2k views

error: “net.inet.ip.fastforwarding” is an unknown key

I've been doing some research into improving performance for OpenVPN and I found out about setting fastforwarding to 1 but when I tried I got the error error: "net.inet.ip.fastforwarding" is an ...
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1answer
173 views

Why can't ACLs block users from having access to their own home directory?

CentOS 6.x In the process of studying ACLs, I came across this blurb in my training documentation: However with ACLs, you can't deny access for a user to his home directory While I can't think ...
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1answer
934 views

Access a NTFS external drive in centos [duplicate]

Is there any way to access a external hard drive with NTFS format in CEntOS 6.2 ?
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GCC compilation - where the __stack_chk_fail@GLIBC_2.4 symbol comes from?

I'm using GCC 4.7.2 from devtoolset package on CentOS 5 (CentOS 5 because we need compatibility with old Linuxes, and GCC 4.7 because it optimizes better than 4.4). There is one symbols that prevents ...
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1answer
787 views

Centos Linux no longer has “ System ---> Administration ---> Printing ” after re-install from “Minimal” iso file

Recently i installed centos linux minimal and then installed GUI over it. i noticed it no longer has System ---> Administration ---> Printing given that this is not a 'software' how can i ...
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235 views

Change chkconfig used by Centos 6.3 to print “on” in bright green (like Ubuntu's chkconfig)?

chkconfig on Ubuntu will highlight services that are on in green when using list mode. http://i.stack.imgur.com/Jx1jW.png This does not occur on CentOS 6.3. I'd like that highlighting on the CentOS ...
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update failure in CentOS

I am using CentOS 6.4 .while I am doing package updating i am getting these errors. please help me to resolve those issues. file /usr/lib/libpostproc.so.52 conflicts between attempted installs of ...
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891 views

Installing CentOS and Kali as dual boot?

I'm going to install a machine with both CentOS and Kali. What are the steps to follow? Which should I install first CentOS or Kali? The issue I tried to run Kali as virtual machine however, it just ...
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540 views

What are “Allowable Drives” in Cent 6.4 Installation

Durring an install of CentOS 6.4, I see two locations where I can select "Allowable Drives" The first time I select "Allowable Drives" is to select which drives are added to my fstab. That makes ...
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217 views

VPN that gives me an internal IP and allows me to reach the internal network from outside

Using Red hat linux/CentOS. Where I have 1 Public IP, that is accessible remotely via SSH. Now that server needs to connect one VPN Server so that VPN server can give one IP to our Server. Now from ...
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3answers
1k views

rsync: samba vs ftp for backup

I need to back up ~0.5 TB of files (about 600,000 of them) from a Windows Server 2003 machine to a CentOS 6.4 machine across a 100MB network, and update them once a night. The backup script would be ...