CentOS is a Linux distribution standing for "Community ENTerprise Operating System" and is a rebuild of "Red Hat Enterprise Linux" (RHEL). The "CentOS6" tag refers to versions 6.x of CentOS.

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Installing Munin on Centos 6

I've hit problems installing munin on Centos 6. This seems to be a conflict between parts of Perl. I think the version of Perl is newer on Centos 6 (v5.10.1) When installing munin via yum I get ...
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What does that mean: packages excluded due to repository priority protections

When updating with yum i recieve the following message: yum update Loaded plugins: fastestmirror, priorities Loading mirror speeds from cached hostfile * atomic: www7.atomicorp.com * base: ...
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Why does cron on CentOS complain about carriage returns?

I have a CentOS 6 machine I am trying to run some cronjobs on and the jobs are failing complaining about a carriage return (^M) on the end of the line. Example /var/log/cron entry: CROND[20344]: ...
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Howto install php 5.2.17 on centos 6 x86_64

Does anyone know how to install php 5.2.17 on a 64bit centos 6 install? I've got a old legacy system that requires php 5.2.17, but centos 6 only supports php 5.3. I've installed repo's such as ...
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CentOS 6 in production

All of my virtual servers are on Centos 5.5. Now I am deploying new one and there is a new OS option: CentOS 6. I like new software, and I prefer to use new versions (but not the edge). So, as far as ...
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httpd conf environment variables - how do they work? (Centos 6)

I have the following config included in my httpd.conf... Include ${MODULE_DIR}/utilities/devconf/bo/vhost.conf where ${MODULE_DIR} is an environment variable that I am setting in my httpd init ...
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CentOS 6 WiFi using NetworkManager and Without GUI tools

I am using CentOS 6, trying desperately to get Wifi working via a ifcfg-wlan0 file and fudging with /etc/wpa_supplicant/wpa_supplicant.conf. I do not have an X server, so I do not want to use the GUI ...
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Broadcom BCM5716 Hangs on CentOS 6 Boot

I have a fresh CentOS 6 installation on a Dell R310 server with a Broadcom BCM5716. The onboard NIC is causing the boot to hang for some reason. Welcome to CentOS Linux Starting udev: udev: starting ...
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Printing fails after first print with Centos 6 and HP LaserJet P3015dn printer

Centos 6 recognises and configures a HP LaserJet P3015dn printer connected via USB. This machine is being configured as a small group file/print server. I can print a test page, which is ...
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What is causing “Unable to find suitable address.” when trying to mount samba share on Centos 6?

I am trying to share a directory on a centos box. I tested out configuring it on my ubuntu desktop before trying it on the centos machine and every thing worked fine. The smb.conf is setup the same ...
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CentOS 6 Gnome login immediately logs me out

Have a strange issue on freshly installed CentOS 6, with Samba Windows 2008 R2 authentication. The login succeeds, and even the home directory created, but then I'm thrown back to the login scren ...
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How can I install pam_mount on Centos 6 x86_64?

I need to use pam_mount to mount user home directories individually at the time that each user logs in. I cant locate a package for this, at least for Centos 6. I would not have a problem building ...
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Cannot access port 80 from remote location but works on local?

I have a linux server on configuration with apache. However I cannot get access to it using a remote computer. I can ssh to the server normally. my IP table: Chain INPUT (policy ACCEPT) target ...
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Cannot write to CIFS share as non-root user - CentOS 6

I'm working on a system recently migrated to CentOS 6 from CentOS 4.9. There is a CIFS mount from a Windows 2008 server that existed on the old system. The raw mountpoint has 777 directory ...
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Linux CentOS 6.0 - auto_eth0 not connecting

I just recently installed CentOS 6.0 i386 from the Live CD. However, now when I try to run updates, I do not have an internet connection. I was told to run "system-config-services" and disable ...
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How can I enumerate SAS addresses/WWNs in Linux?

I have some SAS devices in a server, I would like to find out what their SAS addresses are. How can I do that in Linux? I'm using CentOS 6.
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CentOS Apache wont start

Just did a fresh install of centos, i also installed apache, but it wont start. [root@blah /]# /etc/init.d/httpd start Starting httpd: [FAILED] this is ...
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windows vnc via ssh to kvm guest - connection failed

I've a headless CentOS6 running KVM and I want to configure a guest via vnc. The problem is my working machine is Win7. I created a guest using command: sudo virt-install --name=c6-64 --disk ...
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how to do a kickstart installation of CentOS 6.0 on a Areca 1880i hardware RAID card

I have a server with this hardware two Intel Xeon E5620 CPUs Areca 1880i 8-port SAS RAID PCIe 512MB cache Areca Battery Backup Module 5 pcs Hitachi Deskstar 7K3000 HDS723030ALA640 64MB 3TB and ...
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Which database user do you use to connect to pgAdmin3? (PostgreSQL9/CentOS6)

I've installed pgAdmin3 in my CentOS6. I am using PostgreSQL9. My problem is that I'm not able to add a server to the pgAdmin3. It gives me an error: I have not a password for the user ...
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CentOS6 and PostgreSQL-YUM, (Error: Cannot retrieve repository metadata (repomd.xml) for repository: pgdg90. Please verify its path and try again)

I'm using CentOS 6. I need to configure my YUM to have access to the PostgreSQL repository, but I'm getting an error. I've followed this guide: ...
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How to install pgAdmin3 in CentOS6?

I need to install pgAdmin3 in CentOS6 but I'm getting dependencies errors. [root@andre tmp]# rpm -ivh --aid pgadmin3-1.12.2-2.el6.x86_64.rpm warning: pgadmin3-1.12.2-2.el6.x86_64.rpm: Header V3 ...
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Network traffic doesn't appear to leave the trunk

I'm in the process of staging up some new virtualization servers, and part of that is to get some higher-bandwidth pipes into them. The ultimate goal is to bind 4 GigE ports into a single trunk ...
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Testing SSL performance on Nginx

I'm running nginx 1.0.0 on CentOS 6 x86_64 with stock OpenSSL. Below are results of openssl benchmarking. sh# openssl speed aes-256-cbc OpenSSL 1.0.0-fips 29 Mar 2010 built on: Sat Jun 25 04:58:15 ...
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su using own password instead of root password?

I'm editing using visudo and looking at the following line: ## Allows people in group wheel to run all commands %wheel ALL=(ALL) ALL And when I add a user to the wheel group, they are able ...
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CentOS 6 and upstart

The new CentOS 6 comes with Upstart, replacing init. I am trying to convert an /etc/inittab file to the new upstart format. This particular server only has 15 or so inittab entries, however, other ...
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Upgrade CentOS 5.x to CentOS 6.x - tips and techniques

Now that CentOS 6.0 is making its way to the various mirror sites, I wanted to solicit opinions on the upgrade process. In working with the commercial RedHat 5.6 and 6.x distributions for the past few ...
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Memory missing:: Warning only 4GB will be used. Use a PAE enabled kernel

One of our servers has been setup with 8G ram. But its showing only 3.2G. Pasting the info for further analysis. ========= [root@s209 ~]# free -m total used free shared ...
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CentOS 6 beta release

I would like to start testing and development on CentOS 6. Is it available, or when is it due for release?