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

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problem installing oracle instant client on my centOS machine

I have downloaded and extracted the rpm package instantclient-basic-linux.x64-12.1.0.1.0.zip from oracle website and extracted it in /usr/lib/ where the current path is: ...
2
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0answers
346 views

Why don't I hear audio playing from my CentOS 6.5 Vagrant box?

I want to play a wave file from my CentOS 6.5 Vagrant box using aplay and of course I want to hear the sound. This is what I do: > aplay sine.wav Playing WAVE 'sine.wav' : Signed 16 bit Little ...
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1answer
914 views

Yum doesn't work

Today I try to list installed php packages with yum but when I run "yum list php*". I have got a strange error "There was a problem importing one of the Python modules required to run yum. The error ...
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2answers
2k views

Windows Server 2012 R2 and Centos 7 dual boot: Windows gone from boot menu

I had in my mind that I cannot do much wrong when installing Linux (CentOS 7) after Windows (Server 2012 R2) to get all OSs as boot options. So, after installing Server 2012 R2 nicely, I installed ...
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1answer
113 views

Why does my tunneled IPv6 connectivity drop after a short period of time?

I correctly setup a Hurricane Electric tunnel on a CentOS 6.5 VPS server (KVM). I use CSF (ConfigServer Security & Firewall) which acts as a wrapper for iptables and ip6tables, the default ...
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3answers
4k views

openvpn[]: Options error: In [CMD-LINE]:1: Error opening configuration file

when trying to service openvpn start Oct 12 14:02:01 ccushing1 openvpn[9091]: Options error: In [CMD-LINE]:1: Error opening configuration file: devnet-client-vm.conf running openvpn ...
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1answer
30 views

Get summary count of all patches applied to a server?

Is there an easy way to get a count of the total number of patches applied to a server over a time frame, or even in summary?
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2answers
166 views

CentOS - how to look for dropped connections from NIC

I'm running CentOS 5 and sendmail. Sendmail serves as an MTA for a webserver on the same LAN segment. Most emails go through, but I do get several errors in /var/log/maillog that read: Oct 20 ...
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2answers
6k views

Static routes in route-eth0 ignored

Why might route-eth0 be ignored but route-eth1 not? Might be because eth0 is using DHCP and eth1 is statically-configured? I have some static routes configured in ...
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0answers
206 views

Ext3 file system became read-only and server reboots spontaneoulsy

We noticed ext3 file system in our CentOS 4.9 server became read-only. We got the following error in dmesg: EXT3-fs: INFO: recovery required on readonly filesystem. EXT3-fs: write access will ...
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1answer
216 views

CentOS 6.5 : machine with more that 1 TB RAM => “no free pages available” on boot

I have a upgraded a server with more than 1 TB of RAM, and it is unable to boot. With 768GB of RAM all is working fine. I got the following message : Trying to allocate 1005 pages for VMLINUZ. ...
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2answers
5k views

Is it possible to add an item to the Nautilus right click menu?

I want to add an item to my right click menu, and run a command when a user clicks on it. I'm using Centos 6.2, is it possible? If yes please tell me how I can do this.
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1answer
10k 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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2answers
9k views

How can I set up Virtual Hosts in Centos7?

I am trying to set up virtual hosts in Centos7. I followed this guide: http://twohlix.com/2011/05/setting-up-apache-virtual-hosts-on-centos/ however I keep getting the following error: Job for ...
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1answer
969 views

Installing yum on CentOS 5

I have a CentOS vm that I'm currently working on. I tried to update yum and it broke, so I removed it. So I need to re-install it on my vm, can anybody tell me how to install yum on CentOS5?
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1answer
579 views

Cannot log into CentOS 7 as root

I have a CentOS 7.0 VM, running under VirtualBox. Set it up a few months back, nice to get it back, but not crucial. I have successfully followed the instructions from RedHat, but they seem to have ...
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1answer
260 views

how to install turnserver on centos 6.5 32bit

I get the following error while turnserver on centos 6.5 32bit. How can I solve it? [root@d turnserver-3.2.2.1]# ./install.sh libc.so.6()(64bit) is needed by libevent-2.0.21-2.el6.x86_64 annot add ...
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1answer
344 views

is asus Q87T motherboard compatible with Redhad Linux?

is ASUS Q87T motherboard compatible with RedHat Linux ?? I can't get answer both the two links below: http://www.asus.com/Motherboards/Q87T/specifications/ ...
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4answers
5k views

Can't Install/Update packages on newly installed CentOS

I installed CentOS6 and it is the first time. I tried to install/update packages. But I coudn't. Here is the output and it doesn't stop. How can I solve this? [root@localhost suranga]# yum update ...
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3answers
956 views

How can I get kqemu or even just qemu to show up in virsh capabilities on CentOS 6.4?

I have a CentOS 6.4 box that I'm trying to set up a VM on to run WinXP. This box doesn't have VT, which may not be ideal, but I'll settle for less than ideal. Apparently I should be able to install ...
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2answers
89 views

How to create my arbitary output? [closed]

How can I write a shell script that give me following output: Today is: Thursday, November 05, 2014 The IP for localhost.localdomain is: 192.168.141.140
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1answer
1k views

Grant FTP access to specific directory

I have setup CentOS on a box on my local network and installed httpd, PHP, Webmin (and UserMin) etc. I opted for ProFTPd and have opened up ports for FTP, Webmin and Apache. I can now access Webmin ...
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2answers
141 views

How to connect to a VPS without SSH.

I have a fresh VPS I just bought, for playing only. No risk of any kind involved, so I noticed that due to my slow connection I have to wait seconds to finish writing commands and opening/closing ...
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1answer
276 views

Veritus volume manager perl not avaliable

I am trying to install veritas volume manager on Centos 6.5 while running the script its throwing me Cannot find perl to execute
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1answer
305 views

Linux kernel 3.10.0-123.4.2 processes [flush] aren't present

I am using CentOS 7 with "3.10.0-123.4.2.el7.x86_64" version, but I don't know why the kernel threads named flush aren't present in this kernel version. I tried to look in the kernel change log, but ...
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1answer
188 views

How can I update BASH [duplicate]

How can I update BASH? I noticed that there are version 4.2.45 env x='() { :;}; echo vulnerable' bash -c "echo this is a test" this is a test cat /etc/redhat-release CentOS release 5.11 (Final) rpm ...
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0answers
152 views

pip won't find system package on a custom location

I am working remotely on a CentOS system via bash with an account without administrator privileges and I need to install the Python package matplotlib. I can do this using pip install -t ...
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1answer
7k views

IP Address not populating in eth0 in ifconfig

One of my servers at work does not connect back to us (so I can't SSH into it). I asked the person on the site to do numerous things: sudo /sbin/service network restart It comes up with this: I ...
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1answer
218 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
10k views

service command does not work in centos 7

I used to use service command for restarting, reloading, and checking status of service on centos 6.5 like below: $ sudo service nginx restart OK $ sudo service nginx status ...
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1answer
7k views

Why does my systemd unit fail to run on server reboot?

I'm having troubles getting a systemd service unit file to run correctly when the server reboots. This server is a fresh CentOS 7.0.1406 install. I'm trying to set it up with multiple Apache httpd ...
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68 views

server can't read newly installed centos 6.1

I have a server that has 12TB and I used RAID 1+0(RAID 10) so my logical drive in the server is now 6TB + (6TB Mirror) when I install the CentOS v.6.1 in the server, the installation has no problem at ...
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0answers
100 views

Running centos on a virtual machine as a webserver

I have taken the VM image of our webserver (CentOS/jboss) and would like to run it locally on my mac as a virtual machine so I can use it as a webserver when I am offline - I am using VM Fusion. The ...
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3answers
1k views

Change login user account when accessing server through Putty

I am a very new systems administrator. I have been hired in as a junior and came from a Windows administration back ground. I have about one month of Linux experience. I have a lot of resources that ...
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0answers
457 views

Centos 7 - Encrypted installation won't boot

I installed CentOS 7 netinstall (minimal installation) on a VServer with the following partitions: /boot - 200MB - XFS / - 50GB - XFS Encrypted swap - 512MB - swap Encrypted I ...
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0answers
252 views

what would cause runcobol to fail for certain users?

I have RM/COBOL Runtime - Version 7.10.00 running on a CentOS 6.5 box (VM) This CentOS allows SSH access to certain domain users by authenticating their group with the local domain controller. These ...
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3answers
1k views

auto creation of bash profiles?

Following the instructions at this nice walkthrough here. I have successfully configured my CentOS 6.5 Server to authenticate with my domain. Additionally, it only allows domain users of the group ...
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1answer
6k views

CentOS 7 Live CD?

On this video at 1.09 I see CentOS 7 Live CD which allows to start CentOS directly from CD without installing it. How can I make such disk? I've downloaded .iso file from official web site, burned ...
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5answers
24k views

USB mount doesn't work on Centos 6.4

I have a problem. After an update, my USB drives are not mounted automatically and I'm unable to mount them manually... The output of my fdisk -l command is: Disk /dev/sdb: 15.8 GB, 15762194432 ...
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2answers
12k views

Where is the system profile that gets sourced at login on CentOS 5.8?

In CentOS release 5.8 (Final), where is the bash system profile? Is it /etc/profile ? I've added the following to source my ~/.bashrc file but haven't had any luck as it fails. I know it fails ...
2
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1answer
740 views

Yum installation of package specific modules

I was playing around with texlive package recently and found out that there is a way to install tex style packages with yum install 'tex(package.sty)' command. I've never seen package name was ...
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1answer
155 views

How to open root directory on second HDD?

My situation is very specific. I've applied chmod -R 777 / on my CentOS 7 server, so my system screwed up on next reboot. I took server HDD home and connected it via SATA cable to my home PC. Now I've ...
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1answer
990 views

Changing service startup order

I use wpa_supplicant to configure the wireless connection. Now I have a problem in that the network service starts before wpa_supplicant so this happens: Bringing up interface wlan0: Determining IP ...
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2answers
2k views

What file do I have to edit to make static DNS server in CentOS?

Almost every distro I know will wipe /etc/resolv.conf on reboot (I think DHCP does this) and thus the place to add static DHCP entries varies per distro. How do I add static DNS servers to a CentOS ...
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1answer
98 views

showkey -s doesn't display scancodes in CentOS 6.4

I'm running CentOS 6.4 on vagrant and then doing a vagrant SSH into the box. I've been trying to get backspace to work correctly for a while now (as chronicled here: Centos Terminal Configuring ...
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2answers
4k views

Re-partitioning /home partition in CentOS

I have a CentOS 7 system with a /home partition that is too large. I wish to reduce its size but it's XFS so that's pretty much impossible. Since I don't have much user data anyway (only 1 user ...
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3answers
3k views

CentOS 7 created mdadm array disappears after reboot

I created a raid1 using the below disks and command: $ ls -l /dev/disk/by-id/ata-ST3000* lrwxrwxrwx 1 root root 9 Sep 19 07:27 /dev/disk/by-id/ata-ST3000DM001-9YN166_Z1F04NR1 -> ../../sdc ...
3
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2answers
8k views

When to use BIND vs internal DNS for Samba 4 backend

The docs say, "Bind as DNS backend is recommended, if you plan setup a complexer DNS setup, than the Samba 4 internal DNS currently made possible." What exactly is the threshold for "a complexer DNS ...
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1answer
154 views

Static networking between CentOS and Windows Server 2008

I am trying to set up static networking between my Linux VM and Windows Server 2008 VM. One thing I am confused about is that currently the Linux box only displays an eth0 adapter when I type ifconfig ...
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1answer
589 views

Access old version of file

I was working on a file locally in Notepad++ and uploaded it via FTP to server - during the upload something went wrong without me realising and the uploaded file is now empty (size shows as 0). I ...