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

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Wireless configuration issue in centos 7

I am trying to enable usb wlan, TP-Link TL-WN722N, during boot. I am following instructions from CentOS wiki. Briefly, I modified the /etc/sysconfig/wpa_supplicant and ...
3
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1answer
5k views

CentOS 6.5 Login Screen GDM Issues

I have a few issues with the GDM login screen. I am using CentOS 6.5 and installed GNOME. I was able to change the background of the login screen by replacing the default.png image on the system. ...
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2answers
2k views

How do I install Exim and Horde on Centos 7 with MariaDB 10?

I can't find a guide for this (they are old and don't work) and I can't seem to manage to install it. I can't install Postfix because of its dependencies, so I'm going with Exim, which I installed ...
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6answers
296 views

Most innocuous package to install to test yum?

I'm trying to test yum is working in CentOS from a local repo. To do this I need a package that: Isn't already installed with standard OS install Is small in size Has few or no dependencies Doesn't ...
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1answer
4k views

How to remove Oracle Wallet using orapki?

Hi i'm on Centos using oracle 11g And i've created a wallet using : $ orapki wallet create -wallet /u01/app/oracle/admin/DB11G/wallet -pwd WalletPasswd123 -auto_login Now i want to remove it to ...
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11answers
61k views

Cannot enable network after CentOS 6.3 fresh install

I am trying to perform a fresh CentOS 6.3 installation then run various yum commands such as yum install httpd. The installation runs fine, however I cannot run any network based commands like yum I ...
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2answers
1k views

httpd error: Address already in use: AH00072

I have a server, CentOs 6.5 which were installed xampp by a friend of mine. But I thought it's best to install apache, php and mysql from yum. I have it removed simply by using this #rm -rf ...
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2answers
27 views

CentOS 6 Partitioning Root Drive

I have recently installed CentOS (into a machine with only one hard drive) and I would like to know how to Partition the main hard drive into two. As it is a fresh install there is no data to lose ...
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1answer
46 views

Cannot install gcc on CentOs 6.6

I cannot install gcc on centOs because it cannot find some files, this is the last part of the console when I execute the "yum install gcc*": --> Processing Dependency: binutils-hppa64-linux-gnu ...
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1answer
38 views

Linux Hard Drive Partitioning

I've decided to do a fresh Linux CentOS 6 install onto a small computer which I intend to use as a basic server. The OS has been installed and I would like to partition the 31gig sda drive (there is ...
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1answer
434 views

How can I extend VMware Partition on Centos 7 using GParted?

I've a problem with increasing a partition from 20GB to 120GB, VMDK file. Here is what I've done: using vmware-diskmanager to increase vmdk file from 20 GB - 120 GB. It's ok. download and boot from ...
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1answer
564 views

setting up a relay port for postfix smtp on CentOS 7

A CentOS 7 server has postfix, dovecot, and mailx installed. I am able to make an IMAP connection to the server from my remote Thunderbird client running on my local devbox. But I am not able to ...
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0answers
11 views

How to mount VPS hard-drive to extend available disk space

I have an unmannaged VPS and recently and we upgraded the disk space from 200GB to 500GB. The VPS support wrote me the following message: Please take note that you have to mount the additional ...
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1answer
48 views

How can I resolve “duplicates” in yum?

In a moment of confusion and impatience, I severely damaged my OS. Here's the deal... System: CentOS 7 Problem: essential packages like SAMBA do not work, and yum will not do anything. How it ...
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2answers
37 views

Best Window Manager for One Application

First off: I'm running CentOS light (If this is a bad choice, perhaps recommend one. I'm able to switch between distros fairly easily atm) and I don't need a complicated setup, I just need to be ...
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1answer
19 views

oddjob_mkhomedir doesn't run when logging in via SSH with Kerberos

I currently have a server which has Kerberos/SSSD/Samba to authenticate to Windows 2012 AD. In /etc/pam.d/system-auth oddjob_mkhomedir is set as below: session optional ...
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1answer
685 views

Bridge does not get IP via DHCP at boot

I'm running CentOS 7. I'm not running NetworkManager, and I've actually uninstalled it. My system is supposed to acquire an IPv4 address via DHCP on br0 at boot. Howver, when I log in, it has no ...
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2answers
1k views

How to run java service as a non-root user on CentOs 6

I have a script that starts a Java application as a service on CentOS 6: #!/bin/sh # chkconfig: - 80 20 SERVICE_NAME=cn4server PATH_TO_JAR=/usr/local/share/myserver/cn4server.jar ...
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0answers
48 views

Centos 7.0 update command not working

I have just installed CentOS 7 on my PC. After install completed I tried to update CentOS using the yum update command: Downloading packages: No Presto metadata available for base warning: ...
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1answer
1k views

How to install Owncloud on CentOS 6.5

I wanted to install Owncloud on my VPS running CentOS 6.5. I followed the instructions on the official owncloud website but when I run the command yum install owncloud it says Error: Package: ...
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2answers
1k views

yum install mod_auth_token not working on CentOS

On CentOS 6.5 how do I make yum install mod_auth_token work these days? According to my own HOWTO I wrote 12 months back, you used to be able to just type it now you have to DIY it, which is bad ...
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1answer
2k 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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2answers
2k views

What caused my CentOS 6.4 box to reboot itself?

I noticed that the MySQL daemon running on my CentOS 6.4 machine was suddenly not running anymore. I checked the MySQL log, but didn't see anything relevant: 121229 22:17:45 mysqld_safe mysqld from ...
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0answers
29 views

PHP Fatal error: Call to undefined function mysql_pconnect() in

PHP Fatal error: Call to undefined function mysql_pconnect() in I'm using php version 5.3. server centos 6 I installed php-mysql. i don't know much about centos. Another server which is centos 5.9 ...
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1answer
642 views

can't connect to samba drive in centos 6.3

#smbclient //ballzdeep/torrents Server not using user level security and no password supplied tree connect failed: NT_STATUS_BAD_NETWORK_NAME Does this mean i need to require username and password ...
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1answer
5k views

How to update glibc to 2.14 in CentOS 6.5

I want to install Android NDK on my CentOS 6.5 machine. But when I ran the program, it says it needs glibc 2.14 to be able to run. My CentOS 6.5 only has Glibc 2.12 installed. So I tried to update ...
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0answers
11 views

How to update squid proxy 3.5 in Centos 6?

Iam using Centos 6.6 with 32 bit os. Now i want to update squid proxy from 3.1 to 3.5 . Is it possible to update in centos 6.6 ? If it is possible, please tell me how to update it.
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0answers
23 views

READ DMA Error after Installing CentOS 7

I have been trying to install CentOS7. After I installed it, I see the following message sporadically. ata2.00: exception Emask 0x10 SAct 0x0 SErr 0x4050000 action 0xe frozen ata2.00: irq_stat ...
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0answers
13 views

CentOS 6.5: USB or DVD option wont show in boot menu

I downloaded CentOS 6.5 - I need this version for a particular reason - liveCD and used both Win32 Disk Imager and ISO to USB to create a bootable USB. However, after rebooting and manually bring up ...
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2answers
830 views

vgdisplay shows 0 free PE/size

I'm trying to configure a CentOS HA system with 2 nodes, with DRBD for replicated storage. I'm following the "Clusters from Scratch" guide, and at the DRBD portion, I need to create a partition for ...
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0answers
25 views

manjaro (xfce) menda dark theme in centos 7 (xfce)

I want 100% same look and feel of manjaro (xfce) (Menda dark theme) in centos 7. I found the theme and icons from manjaro github repo, but its not enough. The theme is not appearing properly. Still ...
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32 views

I use a shell script to mount several dirs that share from IBM N6040, it works on centos6 but not on centos7

First of all ,the username、password and the share dir's path is correct, it works on centos6 ,but not on centos7 The code in the shell script like this : mount -t cifs -o ...
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0answers
25 views

How to enable Tcp\Ip remote connections in Centos 7.0

I am running Centos 7.0 using VMPlayer . I have set a private network shared with the host (Windows 7) . On my Centos Server i have opened a tcp listener on port 10102 . I could not connect to this ...
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1answer
481 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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1answer
19 views

Vsftp too much time for login [closed]

While I'm trying to connect my new Vsftpd server using ftp client. The user authentication passed quit speedy but next steps lag too much. Please help me to speedup my Vsftpd server.
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1answer
264 views

gcc installation on CentOS 6.6: configure issue

I'm trying to build/install gcc on CentOS6.6, following this instructions: http://qt-project.org/wiki/How-to-Install-Qt-5-and-Qwt-on-CentOS-6 After the auto-config err'ed out: [felix@localhost ...
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2answers
376 views

Host multiple Linux distros on PXE Server and show these choices to PXE client

PXE Server - CentOS 6.5 64bit Objective - Client should be presented with OS choices in network boot menu - Oracle Linux 6.5, RHEL 7, Ubuntu 14. Upon selection it should proceed with the selected OS ...
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2answers
3k views

SSH connection refused

I have a CentOS Linux server with a SSH connection. It works perfectly but from time to time, the server refuses the connection. If I reboot the server, I can SSH again. What could be wrong?
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2answers
1k views

How to permanantly disable /var/log/lastlog?

When I delete files such as /var/log/lastlog, /var/log/utmp and /var/log/wtmp the files will be recreated. How do I disable the recreation of those files?
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0answers
16 views

firewalld isn't blocking/dropping ports for ports mapped from docker containers

I have firewalld installed and running on my machine. here are my active zones # firewall-cmd --list-all-zones ... drop (active) interfaces: enp2s0 sources: services: http https ssh ports: ...
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1answer
2k views

How to create a git repo using Nginx?

I've a CentOS 5 server at domain.fr. I am trying to set a subdomain so that I can use it with git : git.domain.fr My repositories are in /home/git (example /home/git/repos.git) I've installed ...
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0answers
30 views

Limit system processes using cgroups

My server runs several dozens of processes that are not in my control (mostly monitoring software). According to my application logs, sometimes some of the third party processes try to allocate too ...
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1answer
45 views

What regulates user privileges for the `mount` command?

My installation of CentOS 6.5 has stopped auto-mounting DVDs in KDE (default) X Window desktop environment (e.g. with all the KDE helper functions). Trying to troubleshoot this unexpected change in DE ...
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1answer
544 views

Got the “ERROR: Cannot decode data link type 239” message when turn on sniffer mode

I would like install snort 2.9.6 into Centos 7 the installation is ok and the result of the self-testing mode is correct but when I run this command to change Snort into sniffer or nids mode. I got ...
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2answers
73k views

Installing git “sudo: apt-get: command not found”

I am trying to install git. I run the following command: sudo apt-get install git-core git-gui git-doc But receive the following error: sudo: apt-get: command not found What should I do?
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2answers
77 views

Separate Network Traffic on Two Network Interfaces

I am not an R&S professional, so much of that realm of computing escapes me. Could you lend your expertise in helping understand how to go about configuring the separation of network traffic on ...
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2answers
3k views

CentOS Apache virtual hosts sites-available type structure

I just set up LAMP on a new CentOS server. Previously when I installed LAMP on Ubuntu, I always needed to create a virtual host definition for each website I create in my /var/www directory. But on ...
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0answers
21 views

Saving log files in the user account /home/user when hosting mutliple sites

I'm using Centos 7 and virtual host. The sites are all working great but I am trying to save the ErrorLog and CustomLog in /home/user/www/log instead of /var/log/httpd. When I change the location of ...
12
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6answers
36k views

“Symbolic link not allowed or link target not accessible” / Apache on CentOS 6

I've got a brand new CentOS 6 installation, which has a symlink in the document root to my development files: [root@localhost html]# ls -l total 4 -rwxrwxrwx. 1 root root 0 Sep 18 20:16 index.html ...
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6answers
8k views

jemalloc and other errors making redis on centos 6.4

I am setting up a new, dedicated, centos 6.4 system with redis. I have installed redis many times, but have never hit this issue (and have never been on centos 6.4 before). cd redis-2.6.16 sudo make ...