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

learn more… | top users | synonyms (2)

3
votes
0answers
26 views

How to disable sudo related logging for successful command execution under CentOS/Fedora?

You can disable sudo related log messages via adding something like Defaults:juser !syslog to our sudoers file. That is disabling logging to syslog. But under e.g. CentOS/Fedora there is an auditd ...
3
votes
0answers
61 views

Setting up domain with multiple servers

I am setting up a small web hosting service for my clients. I have my dedicated server which will be the shared server to host clients websites using WHM/cPanel. I have a separate VPS server that I ...
3
votes
0answers
111 views

How to get gnome to run /etc/gdm/PostSession/Default when using XRDP w/ VNC

I use Microsoft's Remote Desktop Client (mstsc.exe) to connect to a linux server with GNOME as my desktop. I've set up /etc/gdm/PostSession/Default to execute some steps on cleanup - which works when ...
3
votes
0answers
40 views

broken filesets after install VLC via RPMFusion

Needed a media player, followed the link on this site Here is the last part of the YUM output; After following the link above, VLC installed and executed fine, but I was left with broken filesets ...
3
votes
0answers
158 views

linux io stack analysis

I'm trying to understand the Linux IO stack by analyzing blktrace trace. Below is the trace i captured by executing simple fio sequential write with no Direct IO (5 x 8k request size). 8,16 1 ...
3
votes
0answers
123 views

RES memory more than initial and maximum memory for java

We have a java application running on Centos 6.4 what we notice is that the RES is around 370m which is more then the allocated max that is 256m. Does this signify that we the application is leaking? ...
3
votes
0answers
563 views

SCSI Tape drive on ubuntu and centos

On ubuntu 12.10 I have those SCSI drives: [1:0:0:0] cd/dvd TSSTcorp CDDVDW TS-H653N 0208 /dev/sr0 [2:0:0:0] disk Generic USB SD Reader 1.00 /dev/sdb [2:0:0:1] disk Generic ...
3
votes
0answers
170 views

Traffic getting routed through Apache

for some reason, certain outgoing traffic on my server gets routed to the apache webserver i am running. this problem just started happening. i have the webserver set up to use vhosts, the webserver ...
2
votes
0answers
35 views

Is there way to print the entered password in PAM?

We are using CentOS 6.5. We have a perl script for our automation testing. One of the script login to the user as non-root user and test "su -" command. This test case passes most of the times but ...
2
votes
0answers
31 views

VPN tunnel to two services on two servers?

I've got 2 CentOS 6.5 servers, each running one service: server A: 10.140.54.1/27 running service MySQL port 3306 server B: 10.140.54.2/27 running service httpd port 443 Server B's httpd service ...
2
votes
0answers
53 views

How does ldap work on a client?

This is on CentOS I read the various openldap howto's, they mention /etc/openldap/ldap.conf and editing /etc/nsswitch.conf for example: ...
2
votes
0answers
28 views

IO throughput lower when only a single process using the disk?

I am running a busy cacti server on centos and sometimes the rrdtool process is painfully slow when writing to disk, in HTOP the IO Column would display something between 100-300. I a polling cycle ...
2
votes
0answers
74 views

Why would whois take up 100% of the CPU?

Running top on my CentOS web server shows an instance of whois running from 99-100% of one of the CPUs. I've not knowingly used whois on this server before, would it be safe just to kill this ...
2
votes
0answers
50 views

CentOS invalid system activity files

CentOS 6.5 server has a cron job that converts system activity files to system activity reports once per day. Periodically, sometimes as a one-off, sometimes every day for a week or more, the cron job ...
2
votes
0answers
82 views

nameservers erased after systemctl restart network.service

I'm working on centos 7, and having problematic behaviour when setting network interface from dhcp to static ip configuration. I edit /etc/resolv.conf, and run systemctl restart network.service The ...
2
votes
0answers
119 views

lz4 Kernel Module in CentOS without recompiling

I just installed CentOS 7 on a vServer to play around with. Usually I use Debian. Since I had good results, I want to use zswap. I enabled it by putting zswap.enabled=1 zswap.compressor=lz4 in the ...
2
votes
0answers
112 views

Understanding “vncserver -list” with respect to Xvnc processes

I have a pretty standard setup on a Centos 6.5 VM. I've configured VNC sessions to start at boot per CentOS's wiki VNCSERVERS="1:root 2:moe 3:curly" VNCSERVERARGS[1]="-geometry 640x480" ...
2
votes
0answers
195 views

Cifs mount a windows share that goes offline

I have a windows share on my workstation that I need on my CentOS 7 server. I have this set up in my fstab as the following: //XXX.XXX.X.XX/Share /mnt/workstation cifs ...
2
votes
0answers
369 views

How do I install postfix with MariaDB 10.1? …Or mailserver…?

I'm using CentOS 7 x64. Log: There isn't mariadb-libs for 10.1, not that I'm aware of. There is MariaDB-compat which as I found out seems to provide the same functionality and I have it installed, but ...
2
votes
0answers
159 views

DNS works half of the time in Oracle VirtualBox and I can't even maintain /etc/hosts file

I have installed three Linuxes on same laptop and same VirtualBox and this is my success ratio with DNS: HortonWorks & CentOS. Worked for 5 minutes and never after that again. VM image ...
2
votes
0answers
148 views

iptables hangs at applying rules

I have a set of rules that are supposed to give me the most protection before things like fail2ban and other things are added to the mix. The issue is that although everything checks out in the test, ...
2
votes
0answers
1k views

Ping command results in packet loss

Whenever I ping on my personal computer, nothing gets displayed other than a single statement. Upon stopping execution, I see that several packets were transmitted in the statistics. On top of all ...
2
votes
0answers
65 views

Transparent Proxy

I am setting up attempting to set up a transparent proxy on CentOS using Squid. So far I have managed to filter the content and get it working perfectly. The only issue I am having is getting a form ...
2
votes
0answers
119 views

Linuxwacom xsetwacom/xorg.conf

I have a CentOS 6.2 workstation with linuxwacom 0.21.0 installed. I am trying to map a button on a cintiq tablet to a keyboard key. I can do it successfully using: xsetwacom set "Wacom Cintiq 24HD ...
2
votes
0answers
106 views

How to activate reverse tethering on CentOS 5

Most examples for reverse tethering are for Ubuntu. They go something along these lines: Attach smartphone Configure usb0 Start reverse tethering on the smartphone Use the PC network via USB from ...
2
votes
0answers
73 views

Matterhorn dead but PID file exists

Installed opencast-matterhorn14 in a Centos 6.5 Machine and after Installation steps while I try to run the Matterhorn using service matterhorn start I keep on getting the same error: ...
2
votes
0answers
1k views

Samba instructions work on CentOS 6.5, but not CentOS 6.3 - permissions in Windows are different

I followed these instructions to install Samba on both a CentOS 6.3 OS and a CentOS 6.5 OS. http://rbgeek.wordpress.com/2012/05/25/how-to-install-samba-server-on-centos-6/ It only seemed to work ...
2
votes
0answers
433 views

Give domain users permissions on cifs shares?

I am using CentOS 6.5 - users authenticate using winbind, all are domain users except for root. /home is mapped to a cifs share on a windows server in /etc/fstab with this line: \\server\home$ /home ...
2
votes
0answers
134 views

gnome “switch user” shortcut or command line

Is it possible to switch user of gnome desktop environment by single command or any shortcut key, in centos 6.0, or Can we create shortcut key? I found "fusa", but still unable to install it.
2
votes
0answers
464 views

Corosync & Pacemaker IPTables Rules

When using Corosync with two rings via multi-cast addresses 226.94.1.1 (Port 5405) & 226.94.1.2 (Port 5406) what iptables rules are required to allow two nodes to communicate optimally without ...
2
votes
0answers
149 views

CentOS 5.5 server dropping & blocking connection

I'm running a CentOS release 5.5 (Final) server running the LAMP stack amongst other things. When working on a web project with numerous active connections to the server box (Plesk over HTTP, SSH and ...
2
votes
0answers
230 views

How to reset linux centOS 6.0 keyboard shortcuts with custom changes to default one?

On Single Desktop Environment.... I created some custom shortcuts, but currently I want to revert all the changes to default settings (which having no custom changes). Example: created like CTRL + N ...
2
votes
0answers
926 views

Can't Install ImageMagick on Centos using Yum

I am trying to install ImageMagick on my dedicated-virtual Centos server for use with PHP. I first ran the following commands successfully: # yum install gcc php-devel php-pear # yum install ...
2
votes
0answers
1k views

CentOS 6.5 sound permissions

I am trying to configure ALSA for a CentOS 6.5 minimal install, my problem is non-root users do not have permission to access the sound devices in /dev/snd because the files are missing access control ...
2
votes
0answers
110 views

Applications are not using the same keyboard mappings, it seems

I’m using an american keyboard and writing in Portuguese. I updated /etc/sysconfig/keyboard as the following article suggested. It worked but only in the console. Firefox and Sublime Text2 shows '+c ...
2
votes
0answers
157 views

Issues accessing CIFS share directories

Disclaimer 1: Crossposted from Serverfault because there was no activity over there. Disclaimer 2: This question is similar to Automounting not working correctly for CIFS shares; weird results but ...
2
votes
0answers
99 views

Problems with USB goflex 2 TB

I am using CentOS 5.5 and have been using cpio to write backups to a 2 TB GoFlex USB drive. This drive worked great for over a year, but am now running into a problem and not sure what to do. When ...
2
votes
0answers
176 views

Setting up surround sound with optical out

I have centos 6.3 running on this pc. the built in sound card is detected normally and is a 7.1 card with all speakers listed. It includes a optical out as well as hdmi for the built in video. It ...
2
votes
0answers
708 views

ping receives no packets, but tcpdump can see them coming in

I'm migrating an old Ubuntu OpenVZ instance (Jaunty) to a new CentOS 6.3 host (using vzdump/vzrestore). Now networking does not work properly. Facts: It works just fine if a setup a new OpenVZ ...
2
votes
0answers
529 views

Xen is unable to use URL's to install CentOS

I can't seem to use URL's when using the netinstall for CentOS, I'm installing CentOS on a Xen VPS. I keep getting this error in the terminal window, when I use the URL: ...
2
votes
0answers
496 views

How to edit rpm's HEADER and NAME-VERSION-RELEASE

Is there's a way or a tool that can modify the HEADER and the NAME-VERSION-RELEASE for an existing rpm without installing/rebuilding it?
2
votes
0answers
914 views

Running gnome-keyring-daemon in CentOS?

I successfully installed MySQL Workbench in Centos 6.2. When I run MySQL Workbench and try to store a password by clicking "Store in Keychain", I get the following error: Could not store password: ...
2
votes
0answers
770 views

Can't ping gateway after bridge

I am running CentOS 6.3 with NetworkManager disabled. I was trying to set up a network bridge to try out setting up guests w/ kvm. I was creating a bridge before setting up stuff with kvm, just since ...
2
votes
0answers
791 views

Owner & Group setting for OpenCart install on CentOS 6.3

I'm setting up a development server on a HP microserver with CentOS 6.3. I'm relatively new to Linux and have ran into some issues/confusion. I have the server fully setup/updated with yum. It's a ...
2
votes
0answers
297 views

Nagios not running notify command

I am in the process of creating a notify command for our Nagios server to notify us via our Kannel SMS sender. This is what I got so far: /usr/local/bin/curl -v -G -d 'username=user' -d ...
2
votes
0answers
323 views

Odd Inode/Ram cache drops happening in CentOS

I run a CentOS 5.7 machine (64bit) with 24GB ram and 4x SAS drives in RAID10 setup. This machine runs nginx/1.0.10, php-fpm & xcache. About a month back the RAM usage of this machine has changed. ...
2
votes
0answers
483 views

Redmine install on CentOS

I'm trying to install Redmine on CentOS 5 following the instructions on the Redmine wiki. I've gotten to the "Configure Apache to host the documents" step without errors. That links to another ...
2
votes
0answers
168 views

How do I install dvd-slideshow on Centos 5?

How do I install dvd-slideshow on Centos 5? http://dvd-slideshow.sourceforge.net/wiki/Main_Page I tried but only found a gui to install on Ubuntu. I'm using Centos 5, command line.
1
vote
0answers
15 views

How to configure nginx to dynamically read folders, user accounts/domains?

I have cPanel and Apache 2.4 on my CentOS 6.6 VPS. I installed Nginx as a reverse proxy. Everything works fine. I have 2 domains on the VPS & I'm able to configure them both on nginx. The ...
1
vote
0answers
39 views

CentOS 7 Crash on boot

Getting this message attempting to boot CentOS 7 BUG: unable to handle kernel NULL pointer dereference at 000000000000009B And then a kernel panic Happens when trying to boot from the OS HDD or ...