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

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Strange behaviour of application running from NFS

I have two VMs running, one with Fedora 20 and the other with CentOS 6.6. I have a remove home directory mounted under /home1/user with autofs. /etc/auto.home1: user -fstype=nfs ...
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35 views

wget stops downloading: Cannot write to `-' (success)

Please have in mind that I don't know anything about this, nor any of its vocabulary, I am a simple web coder, trying to figure my way on the universe! I'm trying to link dropbox on my server, I am ...
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32 views

How do I set up a secure Samba share on CentOS 7?

I want to set up secured Samba shares so I can connect different users on the same computer to their own separate shares. I'll use a script to discover the user's credentials then run mount -t cifs ...
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14 views

How do I get debug information from rsyslog?

I followed the directions from: http://www.rsyslog.com/doc/debug.html I put the following in /etc/rsyslog.conf: $DebugLevel 2 $DebugFile /root/RSYSLOG.txt then I try: kill -USR1 `cat ...
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15 views

Accessing CentOS7 server from public

recently I switched to CentOS 7 OS and set up basic webserver with Apache. I had no problems configuring SSH, FTP and LAN access to the webpage. But accessing from other IP's won't work. I'm 99% sure ...
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8 views

Asus T101 Touchscreen Not Recognized

I'm running CentOS 6.6 x86 on an ASUS T101-MT which originally came with Windows 7... Is there a way to get the touchscreen to work? I couldn't find any answers for this online and everyone seems to ...
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23 views

Port randomly closing (iptables)

I'm running CentOS 6.5 on a VPS and one of the services I have running is murmur/mumble (A voip application). The issue I'm having is that the port clients connect on will be open when I initially ...
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31 views

Samba 4 has high CPU usage when accessing mapped drive through Windows

I have noticed that when I access my Samba share from Windows, the smbd daemon will always use aprox 10-20% CPU - no matter if the share is used or not from Windows. Even if I close the share/window, ...
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15 views

Permissions doesn't change while mounting windows directories (mount.cifs)

I used this command: mount.cifs //192.168.1.106/ukv_sftp$ /home/admin/public_html/remote -o credentials=/root/.smbcredentials, uid=500, gid=500 but permissions set only for root user, uid=500 and ...
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36 views

Where is module prefork.c settings in Centos 7?

I used to edit the settings in etc/conf/httpd.conf for better memory performance <IfModule prefork.c> StartServers 2 MinSpareServers 3 MaxSpareServers 3 ServerLimit 15 ...
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26 views

How do you connect app and DB servers from separate containers?

With Docker, how can I make the DB in one container accessible by the app server in another?
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59 views

install kde on centos-7

I have a minimal install of CentOS-7. The kernel has been updated to 3.20.0-123-9.2. I installed "KDE Plasma Workspaces". However KDE will not start. I manually installed xorg-x11-server-Xorg as ...
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38 views

Possibly Compromised - ./brute xml2014 user x08 300?

I have a long list of a process called "./brute xml2014 user x08 300" when I type in "ps aux". What does this mean? Does this mean my server is being used as a DDoS bot? Here's a screenshot of what ...
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113 views

compiling broadcom wlan driver on centOS 7

my wireless is not working on Cent OS 7. My device was manufactured by Broadcom BCM43142 802.11b/g/n. I am trying to compile the driver with the information given here. ...
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35 views

CentOS 7 and howto extend my current WIFI network

I am running CentOS 7 and I have both a wired cable and a WIFI on my box. The WIFI on my CentOS box I would really like to use to extend my current WIFI network if this is possible. My current network ...
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63 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 ...
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39 views

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: ...
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11 views

What means “removing packages from package profile” in up2date in RHEL?

What does "... removing packages from package profile: ['package1', 'package2']" mean in RHEL, in the /var/log/up2date log? I thought it was dependencies, but the software is still present.
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29 views

OpenVPN service on CentOS7

I installed openvpn through the RHEL repo on a CentOS 7 machine. Problem is openvpn is not installed as a service (ie nothing in /etc/init.d/ or available through systemctl). I could install from ...
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37 views

System not responding and ttyS0 (ttyS0) main process (1627) killed by INT signal

The system is not responding(Unable to do SSH or Telnet, even scheduled cron job is not running) if it runs for more than 5 days. The scenario is "the ssh session is opened and console is opened from ...
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21 views

How do I set kernel-ml default in CentOS?

I have installed kernel-ml package from http://elrepo.org/tiki/kernel-ml Now I have both the original CentOS kernel and kernel-ml. How do I set kernel-ml as default on boot? Thank you!
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41 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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133 views

Setting up a wireless connection on CentOS 6.5 without NetworkManager

I'm trying to set up a wifi connection from my CentOS 6.5 system to a wireless AP, without using NetworkManager. This is a fresh installation, but yet I don't see any ifcfg-* files in ...
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57 views

Show Plymouth Boot Screen failed

I am not getting proper information about how to solve this thing. I am using Centos 7 i've installed one open source called OpenERP. all services are running now. I have one issue i.e. ...
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34 views

Centos List connected computers/devices on network

I'm running on a CentOS and I would like to check to see what computers/devices are connected to my network. How would I be able to do that. I've tried nmap but I must have used it in the wrong order ...
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87 views

Rolling back EPEL 7

I have a fresh installation of CentOS 6.5, and I accidentally added the EPEL 7 mirror, and performed a yum update. Is there an easy way to roll this back and add EPEL 6 instead? Update I ...
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86 views

Keyboard doesn't working in boot menu on VirtualBox

I've just trying use CentOS 6.5 LiveCD on VirtualBox but all my attempts fail. When the system starts I see "Automatic boot in 10 sec ..." - if I do nothing, the message disappears after 10 seconds ...
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33 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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25 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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38 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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68 views

Can call login command from terminal

I want to create a user using useradd from root in my terminal window, after it I call passwd to set user's password. So I cant call login username because when I call it from terminal it closes ...
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109 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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40 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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83 views

Does PHP --without-unixODBC and --disable-pdo conflict with installed modules?

I've been trying to get PDO ODBC working on CentOS 6.5 so that I can connect to a Microsoft Access .mdb database. I've never used any form of linux before but so far I've managed to install PDO and ...
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37 views

loadkeys has (almost) no effect

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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82 views

Unable to install CentOS 7

I have been trying to install CentOS 7 on a computer with no success so far. I am able to boot the live USB media, but the problem is the CentOS installation referring the HDD always as /dev/sdb. No ...
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23 views

CentOS 6.5 Apache redirection from external access

I'm quite new to the whole CentOS thing, and I'm running into a few issues. I had LEMP installed, although that faced the same error so I switched to LAMP, I'm now working with that. When I view my ...
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229 views

Upgrade apache 2.2 on CentOS 5.1

I need to UPGRADE Apache on a CentOS 5.1 server. Its currently at 2.2.14 and I want to bring it up to the latest 2.2.29. Upgrading the OS is not an option, and I don't want to install Apache 2.4 and ...
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34 views

Empty VG, but full?

I'm trying to use KVM with my dedicated server hosted on OVH, but that would require me to have a LVG (logical volume group). I have created the LVG named vg through OVH's control panel and loaded the ...
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95 views

Connection failed to any VPN!

PPTP VPN and OpenVPN don't connect and both return error about VPN Secret in my CentOS 6.4 x64 machine! I've already tested the configurations in Windows and Ubuntu with no problem. I also noticed ...
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45 views

Reinstalling Centos 6.4 over current Centos 6.4 OS

I am a newbie to Linux, and I am trying to reinstall Centos 6.4 from an AsteriskNOW CD I have because through an update I believe I lost the res_srtp.so module I installed from an external source. I ...
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77 views

CentOS 7 gnome Version Network issue

I just installed Cent-OS 7 with GUI Interface, but now I am logging in but I can not connect to network, in virtual machine I see it's connect with bridge (VMware) but I cannot connect to network, I ...
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334 views

What are the steps needed to get Redhat/Centos 7 to boot from an mdadm RAID?

I've spent a day on this. Figured it was time to ask. In the end I couldn't get around "Bad magic number in super-block ..." On an average install, my sda exits setup as an EFI. I'm cool with that ...
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53 views

IPSet - After installing get error message “Broken error report message received”

I get an error message after installation when I try to use ipset. "Broken error report message received". I am wondering what the cause of the issue is, may be some linux guru could point me into the ...
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34 views

Extensions “grayed out” on extensions.gnome.org

The site extensions.gnome.org loads OK, but all of the extensions appear to be "grayed out" (reduced opacity) as though they are not available. At the top of the site, I have "current version" ...
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24 views

After adding FORWARD NAT rules, cannot connect system eth0

I was trying to make bridge connection between wlan and eth on Centos.. I made Forward and NAT rules and then something wrong with System eth0 connection. It does not connect anymore.. Could you ...
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57 views

How to edit the “Internal Server Error” without redirecting to somewhere else?

On the web this is what I see: Internal Server Error The server encountered an internal error or misconfiguration and was unable to complete your request. Please contact the server administrator, ...
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158 views

Gnome 3 with multiple X Screens

Background I'm running Gnome 3 with three separate X Screens using the proprietary NVIDIA driver with Xinerama disabled in xorg.conf. (because Eclipse works better with it disabled) There is only ...
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18 views

How to use scanner drivers api in Linux shell script

Usually when scanning any page using Canon DR- 2050C scanner in windows it rotates vertical text paged to horizontal automatically for the easy reading of the user. In Linux we are manually scanning ...
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11 views

How to increase horizontal and vertical default spacing between icons on desktop at EL6

I have installed centos 6.5, by default icons are appearing very near to each other on desktop. From where I can increase space between them? Any clue? Which file is recommended to modify manually, ...