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

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port being in use not displayed in netstat output

In what scenarios port being used by a process don't show up in netstat -a output. I'm running jenkins on my machine. It's listening on port 8080. I'm trying to start another process that tries to ...
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51 views

Can not call a command

I have a script /etc/init.d/tilestream with: TILESTREAM="/usr/bin/tilestream" MAPPATH="/data" HOST="host" #HOST="localhost" #UIPORT="9001" UIPORT="8888" #TILEPORT="9000" TILEPORT="8888" ...
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Unable to mount cgroup

I've been searching for a solution to this problem but none was working. I would like to start my LXC container but i need to mount cgroup before. [root@stag-devCentOs ~]# lxc-start -n debianLxc ...
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57 views

How can I make CentOS 6 treating WiFi flexibly like Ubuntu 12.04?

In my office, I have AT&T Uverse. The router is a 2wire 3600HGV. The WiFI is provided by a Cisco Linksys E1000 that is plugged in the 2wire device. With my notebook running Ubuntu 12.04 LTS ...
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276 views

CentOS: FTP (vsftpd) Error 530

I struggled my way into setting up FTP on this VPS and I can not get the accounts to work. I did adduser passwd but I get this error in filezilla Response: 220 (vsFTPd 2.0.5) Command: USER Main ...
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408 views

Creating yum .repo file from a remote repo using rpm

This command (from the install page for Varnish 3.x): rpm --nosignature -i http://repo.varnish-cache.org/redhat/varnish-3.0/el6/noarch/varnish-release/varnish-release-3.0-1.el6.noarch.rpm appears ...
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601 views

set the default keyboard type to ascii mode

I am running CentOS 6.5 and I am having problems setting the default keyboard mode to ascii for the virtual terminals. Currently, only the system console defaults to ascii mode, but if I log in to an ...
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29 views

Permisison/Ownership issue with secondary FTP account

I have Centos 6.5 final. I have chroot setup and working properly and I also installed vsftpd. I now need to create a new user named extDeveloper and give this user access to a specific account. I ...
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271 views

Can't open any tool of the system administration panel in CentOS 6 that demands the root password

When I try to open any graphical tool that demands the root password, it won't launch after I enter the password. I have tried the "Authentication" and "Date and Time" apps, for example. When I try to ...
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280 views

When I create a new partition for /home, the partition editor moves it to /dev/hda2 instead of /dev/hda3

I have a CentOS system I'm tying to duplicate. I can't use dd or cat over SSH from the source server so I have to initiate the command from the target server. My first choice is to duplicate each ...
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132 views

no network connection

I am Newbie to CentOS. I have problems with my network connection eth0 I created /ifcfg-eth0 file since it was not present at /network-scripts. I tried ifconfig which does not display eth0. I have ...
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57 views

Citrix printing problem on centos - hp

I have setup Centos 6.3 - 6.5, installed wine and running Citrix app. I can print perfectly Wine based apps (i.e. wine notepad) but when printing Citrix through wine it is printing ASCII characters. ...
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144 views

Centralized package management for RPM based distro

We have about 6 servers under Linux CentOS. And I want to have possibility to view (best will be some web-interface, but console-only useful too) outdated packages, which can be updated and have all ...
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80 views

Move Complete ORACLE from one system to another

I have 2 identical server with exact disk partitions (OS CENTOS 6.4 both ) [My college central oracle server]. Entire ORACLE HOME ( bin , control files, data files everything on oracle) is on 2nd ...
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52 views

How to add Public IP to Cent OS

I am trying to configure a Public(Static) IP in Cent OS 6.4. For this, I made a copy of eth0(added local IP, so that I can connect the system to Internet) and named it to eth0:0(added Public IP, so ...
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1k views

CentOS 6.5 File system permission?

I am wondering, i have installed CentOS 6.5 Live-DVD in my company PC. After all the LAMP installation is done, am having a trouble with the File System permission settings. In the File system ...
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470 views

Change screen resolution of Xenserver Console for a CentOS VM

I need to increase screen resolution to 1024x800 for my XEN console. I tried to place vga=791 at the end of kernel line the file /boot/grub/grub.conf but it seems that most of the boot arguments ...
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Set Up New Locale On CentOS 6

I am trying to set up a new locale for my centos server environment. Here is currently shows for locale -a command: en_AG en_AG.utf8 en_AU en_AU.iso88591 en_AU.utf8 en_BW en_BW.iso88591 en_BW.utf8 ...
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103 views

Problems connecting to IRC server from VPS

So I'm running a CentOS 6 VPS that I've got irssi installed on. I'd like to run irssi as a permanent connection to an IRC server so I can log in from anywhere and not lose my conversations. Irssi ...
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196 views

How to disable PAE feature of kernel, after installation?

I am using RHEL 5.3(x86) as a base platform for my development purpose.My machine's spec is as follows: Intel, Core-i3 Processor @ 2.5GHz 4GB RAM Problem is whenever I am attempting to install the ...
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541 views

Postfix not responding to telnet

I am doing a Postfix installation on CentOS 6.5 I can't get # telnet localhost 25 to do more than this: Trying ::1... Connected to localhost. Escape character is '^]'. EHLO ^] telnet> quit ...
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33 views

Internet working but not all of LAN!

I have recently installed CentOS 6.5. system is behind a firewall (institutional access) with an IP address, say, 10.50.28.99. It is not detecting (pinging or connecting via ssh) computers with ...
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138 views

how to install yoono-desktop?

Just now i download yoono-desktop from http://www.yoono.com/desktop_features.html.While trying to install this app it showing error [root@localhost mpatil]# yum install yoono-desktop Loaded plugins: ...
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315 views

php Mails not send with in domain

My setup : Our current server 90.0.0.50 [example] which is containing domain testdom.com. testdom.com's MX record points to Google mail. Due to some issues we need to host our domain on some other ...
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267 views

Not able to install Nautilus Terminal

I am using centOS Release 6.4(Final) and GNOME 2.28.2. System information is Linux localhost 2.6.32-358.11.1.el6.x86_64 #1 SMP Wed Jun 12 03:34:52 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux I ...
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116 views

CTRL meta key 'sticky' in GUIs over X11 forwarding from CentOS to fedora

Despite numerous problems, I managed to get X11 forwarding working from a SSH server running on a CentOS host to a Fedora client (changing various settings and finally fixing it by installing a ...
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597 views

Issues mounting a NTFS share on Centos 6.3

We have a web server running on Centos 6.3 and we intend to mount a shared Windows drive (Windows 2008) so that we can do our daily backups on to the shared drive. This is how I am mounting the drive ...
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605 views

Linux won't install on RAID set: disks “contain BIOS RAID metadata, but [are] not part of any recognized BIOS RAID sets”

I plugged a Q-Tec 340R ATA-133 IDE RAID card, with two IDE connectors and support for up to four IDE drives, into an old P4 machine, attached two hard drives and managed to set up RAID0 and install ...
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141 views

How to determine the sequence of ordering certificates by browser?

I did a Mutual Certificate Authentication implementation with OpenSSL and Apache Web Server on CentOS platform. To simple explanation see this diagram: ---------- | ...
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Cent OS 6.4 UEFI Dual boot

i'm really a beginner to Linux trying to study for RHCSA certification here. I have Windows 8 installed on UEFI BIOS. When i installed Cent OS, installation went smoothly and then after restarting, ...
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131 views

Installing Ossec on an existing centos 6.4 machine

I have an existing machine running centos 6.4. Is it ok to install now the Ossec or it's not worth any more as the machine is already running for few months. Which is the best mechanism to install ...
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1k views

gnome-terminal won't launch because it crashes every time

gnome-terminal worked this morning, and I haven't installed any software or changed any OS configurations. Now every time I try to open a terminal window, I get an error dialog: The application ...
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131 views

PBX randomly loses network connectivity and restores itself

I'm using a QBX appliance, which is just a microATX desktop system with FreePBX connecting to asterisk and some other slapped together stuff running on CentOS 5.4. It's horribly out of date (which I ...
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CentOS, Django, mod_wsgi permission error

Running CentOS 6.4, Django 1.5.1, and mod_wsgi 3.2. I've set up a simple server configuration but when I restart the httpd service I get the following error in the logs: (13)Permission denied: ...
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521 views

Trouble communicating with FTDI FT245RL on ttyUSB0. works fine on Win7x64

I purchased a Sainsmart 4 channel USB relay board which seems to be based on a FTDI FT245RL chip. I should be easy enough to use. when you plug it in it appears as a serial port (VCP). You send it ...
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183 views

uploading from Netbeans to remote CentOS server failed

I have a php web application on Netbeans on my Ubuntu , and server is CentOS on a virtualBox . Suddenly uploading to server stopped and I'm getting these errors for non-root user : Failed: file ...
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66 views

How can I add PAM functionality in netkit-rsh-0.17

I am using CentOS. In my project, that is working on a network, I need an rsh utility. I downloaded netkit-rsh-0.17 for that and until recently all worked fine. But now I found that this utility ...
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158 views

Booting 32bit CentOS from external HDD on Lenovo IdeaPad Y580

I've got Lenovo IdeaPad Y580 with a 64bit CPU and I would like to boot it from my external Toshiba HDD with a 32bit CentOS 6.4 installed on it. However all my tries ended up with kernel panic: not ...
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121 views

User installation emacs 23 on a centos 5 with system-wide installed emacs-21.4-20.el5?

I would like to install my own copy of emacs 23 on a Centos 5 Linux where I don't have admin rights. I would like to have my own modern copy of emacs on this Centos 5 system since I've got a problem ...
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186 views

vsftpd allow full access in selinux

When I try to alow full access to FTP, suing the setsebool -P allow_ftpd_full_access 1 I am getting this error: libsemanage.get_home_dirs: insta homedir /var/www/html or its parent directory ...
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458 views

Installing XSP on CentOS

Trying to install xsp-2.10.2. Worked fine in the past, now getting this error. Making install in Mono.WebServer mkdir: cannot create directory `2.0': File exists GMCS /out:2.0/Mono.WebServer2.dll ...
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355 views

centos 6.3 apache local network not working

I have clean installed centos, apache, mysql, php and have my php pages running fine at 192.168.1.66. I type that ip in on another computer (macbook) on the same network and get nothing. Page time ...
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137 views

Upgrade from Fedora 17 -> 18 problem

I tried to update Fedora 17 to 18 from within yum using the directions on the fedora web site. When I rebooted I ended up in the CentOS installer screen. I am not sure how that happend but I can't ...
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164 views

Build minimal centos

I'm building a miniminal Centos5 for use in xen but i having problems when go to use yum this are the steps: $ mkdir -p images/x86_64/5 $ cd images/x86_64/5 $ mkdir -p proc etc dev ...
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410 views

How to stop mail with PHP error messages to root?

Today, my Centos has a problem. When I type df -h in SSH I get: /dev/vzfs 61G 61G 0.3G 99% / The disk is full. I found that /var/spool/mail/root is nearly 53GB. tail /var/spool/mail/root -n 50 ...
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359 views

Linux webserver reboot issue

I've webserver, it works fine when there is no load into it. when I've load onto it and try to restart httpd server gets reboot itself or sometimes it automatically get reboot It is Xen HVM with OS ...
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471 views

How to backup and restore Oracle 10G Express in Linux VPS?

I have installed Oracle 10g Express in two Centos VPS server. How can I generate an Oracle backup from server one, so that I can restore the database on server two? Can anyone help on this?
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Centos Apache virtualhost bugs when not using www

I have these extra lines in default httpd.conf: NameVirtualHost *:80 <VirtualHost *:80> DocumentRoot "/var/www/html" ServerName maindomain.com </VirtualHost> <VirtualHost ...
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Cannot retrieve repository metadata when using yum

I ran this command: yum update which gave me the following error: Loaded plugins: fastestmirror, refresh-packagekit, security Loading mirror speeds from cached hostfile ...
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How to configure fail2ban on proftpd CentOS 6.6

I've looked every forum, fail2ban official website, everything that have word fail2ban, and every config that I tried didn't work. After reaching maxretry that I setted in jail.conf the user don't ...