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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How to solve a long “Wait” time, on a dedicated server of a pretty large website

Thanks for reading this. We got an issue with our web server, we have a rather large website, with 500-800 concurrent users at any time, we use a dedicated server to host it, we use prefork to ...
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1answer
371 views

Resize/extend partition size CentOS

Im tasked to resize a partition on a remote server. I've read up on it and understand that i'll need unmount and use resize2fs /dev/sdato expand the partition size. Can someone please help me unmount ...
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70 views

tomcat treats my JSF2 application as HTML

I have a JSF2 application I can access my application @ http://tvmteleshopping.com/faces/ui/manageProfile.xhtml But when i use http://tvmteleshopping.com/ui/manageProfile.xhtml (without /faces/ ) ...
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1answer
1k views

vnc-server not installed on CentOS 6.4

while following this Guide , i did this: yum install vnc-server and it installed success fully , but rpm -q vnc-server returns package vnc-server is not installed while yum install ...
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2answers
279 views

Name Servers not resolving

I just got myself an unmanaged Dedicated VPS from OVH and I don't have a prior experience of setting up servers or DNS servers but I followed a couple of tuts and installed webmin and created NS Zones ...
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1answer
93 views

Self compiled Perl package Centos [duplicate]

I have a Centos 6 server.. I have compiled Perl 5.16 in it (in a non-standard location). Now when I try to install Some package which is dependent on Perl using yum.. Yum tries to install Perl ...
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3answers
625 views

How to mount ceph-fuse automatically with fstab?

# ceph -v ceph version 0.56.3 (6eb7e15a4783b122e9b0c85ea9ba064145958aa5) # repoquery -i ceph Name : ceph Version : 0.56.3 Release : 1.el6 Architecture: x86_64 Size : 26734691 ...
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1answer
99 views

Is subscription-manager available for CentOS?

I'm trying to fix my updater to point to a specific release. Is the subscription-manager for RedHat only? I don't see it in my CentOS 6.3 (yum) repository.
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2answers
198 views

Troubleshooting SUDO Slowness with STRACE

I'm having trouble with sudo on some systems. It is taking anywhere from 15-30 seconds to complete a sudo command or to even login to the system. I ran an strace and can see where the delay is ...
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3answers
64 views

Root access issue from localhost [closed]

I have a strange root access issue - I'm able to login as root via SSH but I'm not able login to the physical machine via terminal. Some more info: - running CentOS 6.4 - password authentication ...
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1answer
185 views

expand the size of EBS volume in EC2 of AWS (Centos 6.3)

I have a Linux Centos instance with the following volume partitions: / - 5 GB /logs - /2 GB /data - 4 TB (4 volumes, each 1 TB). I would like to add more disk space (3 TB = 3 X 1TB volume) to my ...
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3answers
812 views

chkconfig equivalent for upstart jobs on CentOS6

On RHEL6/CentOS6 what is the upstart way to: chkconfig add my-svc chkconfig my-svc on Explanation: I have written an /etc/init/xvc0.conf job. I can do start xvc0 on the CLI, but after reboot ...
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1answer
149 views

1024 connection limit on a single port

I'm running a shoutcast v1 streaming server on a CentOS box. When I start the server as root, I can stream to 1200-1300 clients without a problem. However, when I run the server as a different user ...
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0answers
137 views

Tomcat 5.5.HTTP 404, the requested resource is not available, NFSv4 mount

I am getting the HTTP 404, requested resource is not available. I do not know how to tackle this issue. Let me give you a brief overview of the environment. I have a system running on CentOS 6.4, ...
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2answers
2k views

Selinux in permissive mode, ssh key based auth and locked account

I noticed something weird regarding ssh key based login and selinux in permissive mode. Let me introduce you the setup: The server is an updated Centos 6.4 x86_64. We create user without a password ...
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1answer
138 views

yum and rpm nothing happens

I am experiencing an odd problem in CentOS 6. when I try to use yum or rpm nothing happens. For example if I type yum update it simply returns to the command prompt. I have checked that yum and ...
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2answers
402 views

Determine php script causing MySQL huge load

I'm running a young non-profit organization aiming at providing free and low cost web hosting. Since few days, our server load is around 1.5, sometimes raising to 7. top shows me that MySQL is the ...
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0answers
214 views

IPSec + L2TP + NAT-Traversal does not work for multiple clients behind same nat

I have recently configured a VPN server hosted in AWS EC2. Details: Centos 6.4, openswan, xl2tpd, NAT-traversal. The configuration works great for a scenario when only one user connects form a given ...
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4answers
125 views

Good pratices to update servers? [closed]

I have many servers running CentOS 5.* and CentOS 6.*, I would like to update them, but there's some applications running and I might crash these applications, which led me to write this post with ...
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1answer
66 views

Centos install in Xen problems

I'm running ubuntu 12.04.1, and I want to install CentOS 5 or 6 using network installation via http. Using xen images from http://mirror.centos.org/centos/5.7/os/x86_64/images/xen/ my config: ...
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1answer
73 views

Whats wrong with my iptables?

Problem I cannot get requests to my server on port 80 to redirect to my client on port 8080 Server I am using a CentOS 6.3 VM as the server, the client is an Arduino Server eth0 - 172.16.145.139 ...
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0answers
23 views

Interface eth0 not reacheble outside LAN

First of all, sorry for my bad english. I configured my two interfaces, eth0 and eth1! Bove have the LAN IP 192.168.0.10 and 192.168.0.11.... everything ok. The problem is, eth0 is reacheble from ...
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1answer
1k views

how to change from DHCP to STATIC ip on centos 6 [closed]

I have been trying for months on how to change DHCP to STATIC ip successfully on Centos VM The thing is i am not sure if it is because i am using a virtual machine or if the host bridge network is ...
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2answers
6k views

How downgrade PHP 5.5 to 5.4 or 5.3 on centos6

I have server running centos 6, i recently upgraded the php on the server to version 5.5 and noticed that some of the scripts in laravel framework i use are breaking. i get this error Parse error: ...
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2answers
3k views

Percona MySQL unable to start - ERROR! The server quit without updating PID file

BACKGROUND: I installed Percona Server on a fresh Centos 6.4 minimal. Prior to this, I have never installed MySQL (though I'm not sure if Centos 6.4 minimal came with MySQL?) Anyway, here are the ...
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261 views

Centos installation: Anaconda died after receiving signal 7

I want to install CentOS 6, 64-bit on my PC. I'm getting following error in the first stages of installation (right after media check and before starting graphical installation): Anaconda died after ...
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2answers
1k views

Disable SeLinux permanently

I am running a virtualbox CentOS 6.4 (64 bit) server with Cobbler service. One of the steps is to disable SeLinux in order to prevent a python error when running service cobblers start. If I run ...
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1answer
59 views

Redirecting webapps in nginx content folders

I have setup an nginx + php + wordpress site at www.example.com When I go to example.com on my browseer I see my wordpress blog as I expect and can work with it flawlessly, no problem there. But now I ...
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1answer
75 views

Site is not loading since early today

Since early this morning I cannot access my website http://naruto-tv.tv and also using putty I couldn't access the server. However I have other accounts on the server and I can access these websites ...
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2answers
165 views

Centos kdump hangs up

Trying kdump on CentOS 6.3. On VMWare everything is fine and on oops crash kernel is loaded and vmcore created. On phisical machine I see oops message, but crash kernel is not started. I used ...
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1answer
167 views

How to configure Inn2 and nnrpd to authenticate using SSL?

I'm trying to set up a local usenet server, Inn2, with authentication over SSL, so that readers (clients) aren't required to send their passwords in cleartext. I generated a self-signed certificate ...
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156 views

New build, kslowd000 to 003 take 10% cpu at all times - centos 6.4

I've just built a new box with centos 6.4 minimal Asus P8H77-I mobo w/ Intel Core i3 3x Seagate 2TB sata3 in raid 5 (using the intel firmware raid at boot) yum update and all that and we're having ...
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1answer
1k views

banning all *azenv.php request to my server

I am using apache 2.2 under centos6, and I'm recently having some kind of accesses that are unwanted, and that I wish to ban. For instance, I have this in my error_log: [Sun Apr 14 01:06:29 2013] ...
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2answers
142 views

What is the lowest udp source port for puppet dns queries?

On CentOS 6.4 and 6.3 I have seen puppet regularly use ports below 32768. This is contrary to the setting for kernel-assigned ports according to: cat /proc/sys/net/ipv4/ip_local_port_range 32768 ...
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4answers
2k views

Python-devel for python 2.7 on CentOS 6.4

Ok, i want to run django web-application on production VPS. Operation system of the VPS is CentOS. Application code written on Python 2.7. I have already installed Python 2.7 with configured virtual ...
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1answer
442 views

centos: packages of different architectures got messed up?

I am trying to install gdal-devel on the following machine: # cat /etc/redhat-release CentOS release 6.3 (Final) # uname -a Linux local 2.6.32-279.1.1.el6.x86_64 #1 SMP Tue Jul 10 13:47:21 UTC ...
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2answers
464 views

yum update entire release but limit to a prior version

We need to update yum update but we want to stay one release back. For example, we have CentOS 6.2 and want to move to 6.3. By default, it looks like yum update will install 6.4. On RedHat, this ...
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2answers
289 views

DNS setup on Centos 6 VPS

I have a domain registered through namecheap.com, and I have 2 nameservers for my domain (ns1, ns2.domain.com). Both nameservers are being pointed to my VPS IP address. I can access my VPS fine ...
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281 views

CentOS 6 won't load default (new) kernel, loads (another) older one instead

I am having a weird issue with a CentOS 6 system. I have upgraded the kernel twice now and when I reboot the system it still loads the older kernel. I also had a dc tech watch the screen as it ...
0
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1answer
146 views

PHP include() through HTTP makes Apache time out

I have a problem with ExpressionEngine2 after moving from an old server to WHM/cPanel running on CentOS6.4. Simple test code to reproduce that issue: <?php $protocol = ...
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2answers
516 views

Managing DNS on CentOS 6.4 [closed]

I am a bit new to this and I look ahead to get answers on how I can do this. It is my first challange and I look ahead to get an assistance from anyone out there if they wish to give me a hand. I ...
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1answer
169 views

Setup default page for Apache Virtual Hosts

We are running Apache on a server with multiple VirtualHost entries. Whenever someone access the server by it's IP address (http://198.147.xx.xx), one of the websites that is a VirtualHost comes up. ...
2
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1answer
113 views

Where is $HOME set in Centos 6.3

WHere is the $HOME environment variable set in Centos 6.3? I've looked in: /etc/profile /etc/profile.d/* /etc/bashrc ~/.bash_profile ~/.bashrc Also, the second to last column in /etc/passwd has ...
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1answer
2k views

Why can't I connect to my PostgreSQL database?

I'm trying to install tentd-admin. The install fails during this step: $ DATABASE_URL=postgres://localhost/tent_server bundle exec rake db:migrate I also tried this: $ ...
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1answer
92 views

Sphinx searchd dead but subsys locked

I have configured everything on sphinx. It is working fine in the command-line interface using Putty. Even i can able to search in the Command Line Interface as below, [root@phpsalzer sphinx]# search ...
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0answers
1k views

Unable to download the Kickstart file…

I have tried for several hours to get this Kickstart installation going but to no avail. I have port 21, 22 and 80 opened and even tried FTP and HTTP to access this Kickstart file but it won't work. ...
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1answer
181 views

CentOS 6 tftp server default boot menu

Edit: I figured it out. I just had to set permissions on my files properly which was causing problems (did not see how I missed that). Thanks everybody for the suggesstions. I am trying to install a ...
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1answer
3k views

Configuring Bind - Error About SOA Record When Starting named Service

It's been entirely too long since I setup a bind server. I've creating a lot of Windows DNS servers lately so I wanted to try my hand at it on CentOS 6. Unfortunately I'm having a slew of trouble ...
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1answer
1k views

Setting up Firewall in CentOS 6.4

I need to ask a general question about installing certain packages and the need to make iptable adjustments in centOS; When I installed the apache package and put a simple test page in /var/www/html, ...
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1answer
627 views

NFS server is ignoring anonuid?

On NFS server I've got user with UID=1024 and GID=1204. On client side too. Both servers are CentOS 6.4 (2.6.32-358.2.1.el6.x86_64). Right now anonuid/anongid is not working. Files aren't mapped to ...