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

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2
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18 views

How to tell systemd to start sshd later in the boot sequence?

My sshd_config file specifies it should listen on some specific IP addresses instead of on all IP addresses. The problem is that one of these NICs doesn't come up until later in the boot sequence. ...
0
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0answers
15 views
+50

GNOME 3: bottom panel window order

I have centos 7.1. At bottom panel opened windows (running applications) are represented (ex: openoffice, thunrderbird, terminal). Question one - How can I change the order of these opened windows ...
0
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1answer
6k views

CentOS 6 not regestering new hostname on Windows Server 2003

I rebuilt a Windows 7 Workstation with CentOS 6.5. The Windows 7 had a host name aaa attached to domain ddd.local. The new CentOS hostname is bbb. When I try to ping it: $ ping bbb ping: unknown ...
0
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2answers
18 views

Unable to mount Volume Group [on hold]

2 drives connected externally to a new server both are merged using LVM as one drive. vgscan Reading all physical volumes. This may take a while... Found volume group "vol_grp1" using metadata type ...
0
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2answers
634 views

How to disable core dump generation in Centos (cPanel Server)?

I want to disable core dump generation, How can I disable it ? One of the website keeps generating core dumps every second and eats up all the disk space. OS Details: CentOs cPanel Server ...
0
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1answer
11 views

Centos 7 Drivers issues on HP sleekbook 15-b001ee

I am fresh to linux and centos. I have installed centos with GNOME desktop successfully but after signing to my account couldn't find Sound and Wifi working. I have google a lot but everything is ...
8
votes
1answer
18k views

ifconfig command not found

I've just installed CentOS7 as a virtual machine on my mac (osx10.9.3 + virtualbox) .Running ifconfig returns command not found. Also running sudo /sbin/ifconfig returns commmand not found. I am root. ...
2
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4answers
7k views

How to know which is the default script shell in Centos?

I'm using Centos 6 and after reading about different shells and dash implementasion as sh replacement in Debian, Ubuntu and Fedora, made up my mind to replace sh with dash as the script shell in ...
0
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0answers
11 views

Subversion // installed and set, but fail to connect

I aim to get my own SVN server. I installed Subversion, all had been ok. I configured it <Location /myrepo> DAV svn SVNParentPath /svn/adlsvn #For any else ...
0
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1answer
12 views

CPanel / WHM // CentOS // SELinux

The file config indicates SELinux mode is "target". Is it enabled or disabled ? Terminal/SSH says 'disabled'. But several behaviours here and there act like it is enabled. Thanks.
0
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0answers
16 views

CentOS 7 - Rename network interface without rebooting

I'm renaming network interfaces by modifying the files in /etc/sysconfig/network-scripts. eth0 -> nic0 eth1 -> nic1 The content of the the network scripts looks like this, after modification: # ...
1
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3answers
3k 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 ...
1
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1answer
937 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 ...
0
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0answers
15 views

How SYN and ACK packets counted by the server(Linux)

I have a question about tcp layer of linux kernel. I want, Syn and ack packages received to server will be counted. where total_syn_count and total_ack_count are variables to be defined and will ...
0
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0answers
12 views

“yum-config-manager --disable <repoid>” How to get repoid for centos 7?

I mistaken installed centos7 minimal. But I want to install GUI for centos7. from this link: ...
0
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2answers
1k views

Why can't I access to my ftp server with my local user account?

First of all I'm using Centos 6 server, putty and wordpress.org I followed the instructions from this link to set up vsftpd and ftp in centos server. For the vsftpd.conf file, these were the changes ...
0
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0answers
9 views

How to remove previous version of centos7 and install fresh centos7 in Toshiba Satellite using bootable USB

My centos 7 has been corrupted. I want to install fresh centos7. When I run rpm -q kernel. It gives the following results kernel-3.10.0-123.el7.x86_64 kernel-3.10.0-123.20.1.el7.x86_64 ...
0
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0answers
14 views

TFTP times out in CentOS 7

I have an isolated server that telnets into the single device on its network and loads a file to it using the telnet command load. I am trying to recreate the functionality on another PC. The old ...
2
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0answers
20 views

recover lvm formatted partition

I had 2 old drives having LVM installed showing as 1 drive. They were attached by the datacenter to the new server to migrate data but they weren't able to be mounted I tried everything possible until ...
0
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1answer
31 views

How to format old laptop and install CentOS

I have an old laptop with Windows 7. I want to remove everything and install CentOS 7 to turn it into a server. What I know is that I should format the old OS somehow and get iso image of CentOS and ...
-1
votes
1answer
21 views

how to convert video into webm format using ffmpeg in centos

how to convert video into webm format using ffmpeg and libvpx in centos I have install ffmpeg and libvpx in centos.but it's doesn't convert mp4 format into webm format. but in windows i have check, ...
1
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0answers
15 views

Error running startx on CentOS via SSH

Whenever I attempt to run startx on a system I have SSHed into, I get the following output: xauth: creating new authority file /root/.serverauth.6604 X.Org X Server 1.15.0 Release Date: ...
10
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2answers
18k views

How to install Desktop Environments on CentOS 7?

I have recently installed CentOS 7(Minimal Install without GUI) and now I want to install a GUI environment in it. How can I install Desktop Environments on previously installed CentOS7 without ...
0
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1answer
714 views

CentOS 7 won't serve static https content, why not?

I just re-installed httpd and created a static index.html file. I have firewalld configured to allow internet access to the https service. But when I type https://my.server.ip in a web browser, the ...
1
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1answer
487 views

Interdependent conflicting packages in CentOS 6.5

I've been using CentOS 6.5 as my OS for quite a while. Usually I don't have many problems with Linux installations, but as they new CentOS 6.6 was released I found myself in a bit of a problem. There ...
1
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1answer
48 views

dm-0: WRITE SAME failed. Manually zeroing. Centos 7.1 on VmWare ESXI 5.5

I've got a error when system start on 2 VM's. dm-0: WRITE SAME failed. Manually zeroing. OS: CentOS 7.1 VmWare ESXI 5.5 1-st VM has LSI Logic Parallel type for SCSI controller on HDD Datastorage. ...
1
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1answer
14 views

Help about CentOS 7 apps & Driver [on hold]

I'm using pc for several years but never tried Linux so I'm quite noob in this field. I'm using Autodesk maya, Nuke & will learn houdini very soon. I found that linux works faster for this apps so ...
1
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0answers
17 views

Problem with usb's on CentOS

I have problem to recognize my USB devices on the CentOS 5.9(Final). Here are all the appropriate commands to help me debug me problem. dmesg | grep usb usbcore: registered new driver usbfs ...
1
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1answer
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 ...
1
vote
1answer
612 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 > ...
1
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2answers
1k views

Allow remote MySQL to a specific IP - using CentOS 6.4 [on hold]

I've spent a day now trying to find out how to allow remote MySQL to work for my other virtual server. This is proving very difficult so I'm hoping you guys could help me out ;( I've used the ...
0
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0answers
330 views

tmux unable to start a new session? “1;2c”

Introduction I just installed tmux onto my CentOS 7 machine, but I have encountered a bewildering issue. Whenever I try to attempt to start up a session using tmux or tmux new -s session-name, it ...
1
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0answers
10 views

I2C driver support baud rate parameter

I have several test machines running CentOS release 6.5 (Final) and we are using Python 3.3 using the SMBus package to communicate over the SMBus (e.g., I2C). We are using the i2c-dev module. The ...
2
votes
4answers
425 views

Memory consumption Fail2Ban CentOS

Fail2Ban is using a huge amount of memory on my system (1.2 GB). There are several articles which describe how to reduce it. Below is an example for Debian. append the 1ulimit1 command to ...
0
votes
1answer
13 views

#puppet apply site.pp gives below error on cent 6.4 [on hold]

Could not find default node or by name with 'puppet-master.example.com, puppet-master.example, puppet-master' on node puppet-master.example.com
0
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1answer
7 views

Apache Module blocking access to FTP

I'm running a CentOs server with a lot of websites on it. The previous dev lead applied the Apache module to all domains. Problem is, now the client can't access their files in Filezilla. They can ...
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0answers
9 views

coonection time out after #puppet agent test

after executing following command puppet agent --test o/p Unable to fetch my node definition, but the agent run will continue: Warning:Connection timed out - connect(2) Info:Retrieving pluginfacts ...
0
votes
0answers
6 views

/var/lib/puppet/state/agent_catalog_run.lock exists

after executing following command on centos 6.4 m getting below error puppet agent --test o/p: Run of Puppet configuration client already in progress; skipping ...
16
votes
5answers
20k views

CentOS no network interface after installation in VirtualBox

I have Ubuntu 12.10 on which i installed virtual box on which I setup centos 6.4 i386. On Ubuntu I have: 3.5.0-17-generic kernal running. On virtual box I install centos 6.4 and everything works ...
0
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0answers
29 views

CentOS 6 Include Gateway for Static IP Address

I've just set up a static IP Address for my CentOS Machine using the following settings in /etc/sysconfig/network-scripts/ifcfg-eth0 #eth0 Config #IPv4 DEVICE="eth0" NM_CONTROLLED="yes" ...
3
votes
3answers
561 views

Is it possible to share an external hard drive through server?

I was wondering if it is possible to share an external hard drive in CentOS server? Sorry if this question seems basic. I'm new to system administration.
1
vote
2answers
556 views

install opencv-2.4-9 on centos 6.5 with cuda 5.5 support

I can't seem to install opencv 2.4.9 on centos 6.5 with cuda 5.5 support. This is my cmake output: [root@cadejos-0 opencv]# cmake -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/opt/opencv -D ...
0
votes
1answer
23 views

Configure CentOS run command prompt

How do I configure the run command prompt (the one shown with Alt+F2) in CentOS 7? It doesn't appear to be seeing my PATH or aliases.
4
votes
1answer
915 views

CentOS - how to install vsftpd for specific username to have specific directory access only?

I have VSFTPD installed in CentOS. Where i have one username "lesstrust1", when the user login i want the user only can upload/download to this path /var/www/html/oxwall $ yum install vsfptd $ ...
0
votes
1answer
42 views

Create unformatted partition from unallocated disk space

The parted output is as below: $> parted /dev/sda print free Model: ATA Hitachi HUA72302 (scsi) Disk /dev/sda: 2000GB Sector size (logical/physical): 512B/512B Partition Table: msdos Disk Flags: ...
0
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2answers
1k views

Yum Returns Errors when using

When I try to use Yum (e.g. # yum update) I get an error and it prevents me from using Yum. Any help on this would be really cool! This is the error that I get when I try to run a Yum command: # yum ...
0
votes
0answers
10 views

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
votes
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 ...
4
votes
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 ...