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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CentOS 6.4 x64 iRedMail SMTP Error: (451): Failed to add recipient

been managing my own servers for a bit now, but new to mailservers in general. I have gotten iRedMail installed on my box (CentOS 6.4 x64), but I'm getting an error when it comes to actually sending ...
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1answer
35 views

apache servers not sending data after glibc update

I have an apache download server that I recently performed a botched install of a new version of glibc on, and now I only get 'no data received' when attempting to retrieve files. Server version: ...
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4answers
14k views

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?
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12 views

550 error after setting permissions on folder

I'm running a Centos6 VPS with Plesk 11. I am unable to access a folder using FTP after changing the permissions to 666 using chmod. I can create the folder using SSH and can then enter the folder by ...
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1answer
14 views

Eucalyptus can't find ssl certs

I've installed eucalyptus-cloud, -cc, -sc, -walrus on a single computer to test it, with the intent to install node controllers on my other servers. When I start eucalyptus-nc it outputs Cannot find ...
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10 views

stuck on getting ssl to work on vps with centos 6 and plesk

I ordered an ssl certicate and installed it via plesk on the vps. the private key and certificate are in txt format which i pasted in the fields in plesk. I've 2 domains hosted on the vps on 1 ip, i ...
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15 views

MySQL suddenly 'crashed' but not stopped, mysqld_safe 100% cpu on CentOS 6

Suddenly, today i see the website down. Checking the cpu with "top" in command, i found the mysqld_Safe at the top using all of the cpu. After some google i found some different solutions, i made a ...
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1answer
820 views

How to disconnect pptp client?

How to disconnect pptp client connected to Cent OS 6.2 server from the server side ? ifdown ppp0 doesn't work.
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1answer
39 views

Does HDD Speed matter on Unix after boot? [on hold]

I am configuring a mysql / webserver (2X 3.4Ghz 6 core, 96GB RAM) and waiting for the SSD drives to get here and wondered if I would really notice any difference in performance having the OS on the ...
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2answers
13k views

Can't ping or reach external IP or domain on CentOS 6.3?

I have installed fresh CentOS 6.3 on my machine. Internet is not working at all. How ever I can ping my router and other computers connected on LAN. I've googled and searched various forums but all in ...
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2answers
2k views

Creating SSH key on Jenkins Master - Centos Yum Install

I have installed Jenkins on a Centos VM as I am looking at replacing Bamboo, I have it all up and running by following the install instructions. That went fine, I then wanted to spin up a Slave, I ...
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3 views

The value of env var SPLUNK_OS_USER, “splunkuser”, does not match any user on this system?

I got an error message like this after restarting the Splunk server on my centOS server. The value of env var SPLUNK_OS_USER, "splunkuser", does not match any user on this system; Error : ...
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26 views

CentOS 6.6 - Additional public IP through aliasing in VM with bridged network

The scenario: A CentOS 6.6 virtual machine with a working public IP assigned to its eth0 via bridged networking (details about the setup below). The problem: I would like to add an additional public ...
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2answers
826 views

CentOS https Error Upon Start

I am getting an error in CentOS when trying to start/restart apache(httpd): [root@database ~]# /etc/init.d/httpd restart Stopping httpd: [FAILED] Starting ...
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12 views

What problems arise if user-space drbd is older than the kernel module?

Since more than five years I am using XEN in a productive environment. My constellation: SLES11 (included: OpenSource XEN 4.x), DRBD 8.3 in primary/secondary mode. Now I would have loved to go away ...
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1answer
65 views

Static Route Dual LAN CARD Centos 6

First let me explain the scenario. I have two internet connection (Lease LINE and BroadBand). I have a CENTOS 6 Server which is used for VOIP calling (GOAUTODIAL). Now I want everyone in the LAN to ...
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1answer
989 views

OpenVZ Can't initialize containers after install

I have installed OpenVZ on centos 6 on a dedicated server. I followed quick installation guide on openvz wiki. After installing thru yum, I don't know why, but grub.conf wasn't automatically updated ...
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18 views

how to set up email security setting with ssl/tls in centos 6 [closed]

I am really new to vps hosting. I bought a hosting service and thought they will support whatever I asked them but they said they only support sever side. My question is ** I bought a certificate ...
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12 views

unable to hear test calls on freeswitch

I have freeswitch installed and running on CentOS 6.6. I can ssh using Putty and see the CLI screen after running freeswitch. I have Xlite and Zoipher softphones installed on my Windows 7 machine. I ...
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2answers
1k views

How to install mcrypt in dual PHP version CentOS 6?

I have two parallel versions of PHP installed on CentOS 6.5 via this method [root@host ~]# php -i | grep "PHP Version" PHP Version => 5.3.3 [root@host ~]# /opt/rh/php54/root/usr/bin/php -i | grep ...
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1answer
89 views

NFS Client Issue on CentOS 6: rpcbind not listening on port 111

I'm trying to setup a NFS client on a new CentOS 6.6 server to an existing NFS server and am having problems that I cannot figure out. When starting rpcbind/nfs I get: # /etc/init.d/rpcbind start # ...
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4answers
997 views

Installing MySQl 5.5 on CentOS 6 dependencies conflict

I installed mysql on my centos 6 yesterday but I wasb't aware that it's installing mysql 5.1 which is an outdated version. Now I've remove old version and all it's dependencies, but when I try to ...
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17 views

unable to create SIP account in Zoipher 3.6

I have freeswitch installed on CentOS 6.6. I can SSH in to the box using Putty client and IP (Let's call IP1). While doing SSH,I use different IP(Let's call IP2) and while using Zoipher and trying to ...
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1answer
38 views

CentOS 6 phpMyAdmin access denied

I am having issues setting up my VPS with phpMyAdmin. My error message: Forbidden You don't have permission to access /phpMyAdmin/ on this server. My phpMyAdmin config: # phpMyAdmin - Web ...
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3answers
1k views

Varnish won't start as service but works fine from command line?

We're trying to setup a varnish on a Cent OS 6.5 64 but can't get it working as a service. What could be the reason for the following error? [root@server]# service varnish start Starting Varnish ...
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2answers
1k views

SVN Checkout error on large repositories

I wonder if anyone can help me. We have recently migrated our Subversion repository from a VisualSVN Server on Windows to a subversion server on CentOS. The migration was succesfull however we are ...
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1answer
2k views

Nginx failed (99: Cannot assign requested address)

OS: CentOS 6.5 (Final) Panel Version: 11.5.30 I'm using Plesk and turned on the nginx service. Now my sites are pointing to the Apache page. I have also looked at the errors within the nginx error ...
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1answer
28 views

Is there a well-known port for logstash-forwarder?

I'm setting up a few logstash-forwarder agents which will send logs to a central Logstash server, and need to choose a port for Logstash to listen on. After doing some searching, there doesn't seem to ...
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2answers
1k views

OpenVPN SELinux Permission Denied

I am running CentOS 6.4. # cat /etc/centos-release CentOS release 6.4 (Final) After some updates, and a reboot, OpenVPN fails to start. # service openvpn start Starting openvpn: ...
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2answers
2k views

PHP no longer working on Centos after installing phpMyAdmin

I think I have killed my LAMP server! The server is CentOS 6.6 and has Apache 2.2 and PHP 5.4 installed. I didn't originally install anything - it was provisioned this way by my hosting provider. ...
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2answers
303 views

How to get mod_proxy_fcgi on CentOS/Red Hat 6 with Apache 2.2?

I am trying to get Apache 2.2 + php-fpm to work on CentOS 6.5 (and Red Hat later). I want to use mod_proxy_fcgi to do this, but I can't find a proper way to get it. I tried looking for repository ...
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3answers
34 views

Error: Nothing to do trying to install local RPM

I'm trying to install this RPM locally via yum and am greeted with just a "Error: Nothing to do" message. Full stdout Loaded plugins: fastestmirror, priorities Setting up Install Process Examining ...
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115 views

CentOS 6.6 kickstart failing suddenly when including the 'updates' repo

Suddenly this week my CentOS 6.6 kickstart is failing with: A fatal error occurred when installing the <rpm.hdr object at 0x4981cd0> package. This could indicate errors when reading the ...
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27 views

Extending partition on Google Compute Engine Centos 6 with Cpanel

Before I created a VM on Compute Engine, I first created a disk with 100gigs on Centos6 image. I then created a VM using the 100gig Centos disk. When that finished I installed Cpanel on it and I ...
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812 views

lighttpd virtual hosting configuration

I need help setting up virtual hosting in lighttpd. i have the lighttpd default webpage in /var/www/lighttpd dir and i have created other dirs for my other websites /var/www/web1.com/public_html and ...
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1answer
1k views

Compiling PHP on CentOS Needs MySQL PDO Configured

I am trying to compile PHP with mysql_pdo on CentOS 6 and I am having just one heck of a time trying to make it happen. Currently I am trying to compile PHP 5.2, but I am going to have to do this for ...
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3answers
7k views

Can't create LVM due to: not found (or ignored by filtering)

I'm planning to use LVM for KVM, and when I try to create a VG it fails, so how can I create my VG and LV ? Thanks [root@server ~]# vgcreate virtual-machines /dev/sda Device /dev/sda not found (or ...
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41 views

Apache VirtualHost error: Invalid host name

It used to be pretty simple for me to set up a VirtualHost to test a new php webapp, for this http.conf: NameVirtualHost *:80 <VirtualHost *:80> DocumentRoot /opt/webgrind/www ...
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1answer
15 views

m4 sendmail.mc command fails no error

I'm trying to make some changes to my configuration file in sendmail using this command: m4 /etc/mail/sendmail.mc > /etc/mail/sendmail.cf The problem is, it's not working, or at least I'm pretty ...
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4answers
4k views

CentOS iscsi initiator has session but there is no block device

I have installed the scsi-target-utils package on CentOS and I used it to perform a discovery. The discovery did give me an active session. I restarted the iscsi service but I do not see any new ...
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20 views

Automatic updates recommended in CentOS 6/7? [duplicate]

I know there are several ways to automatically update the CentOS 6/7 system via yum. My question: Are automatic scheduled updates recommended to use in CentOS? If yes, which way is the best? Florian ...
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5answers
1k views

cannot use any yum command: no space left on device

if i use any yum command, i get Loaded plugins: fastestmirror Traceback (most recent call last): File "/usr/bin/yum", line 29, in <module> yummain.user_main(sys.argv[1:], exit_code=True) ...
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1answer
273 views

Cannot access Wordpress post: 403 Forbidden Access error

I have just installed Wordpress and can access the Control Panel at /wordpress/wp-admin/index.php but when I try to view a test post at www.mydomain/wordpress/?p=1 I am getting a pesky 403 Forbidden ...
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2answers
297 views

CPU Affinity setting not sticking

I'm attempting to set the affinity of mysql (latest Percona Server) on a 4vCpu VPS virtualized with OpenVZ and running CentOS 6.x. The command I'm running is taskset -pc 0-1 1026. I've also tried 0,1 ...
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3answers
86 views

Delete the contents of a huge directory in CentOS 6.6 [duplicate]

I have a directory in my webserver that has 116 thousand cookie files in it. How do I delete them? rm -r /var/www/html/secured/cookies/* I tried this but it does not work. -bash: /bin/rm/: ...
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1answer
979 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 ...
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0answers
28 views

winbind needs to be restarded after boot

Environment: Centos 6.6 Samba 3.6.23-12.el6 I have succesfully connected the server to an Active Directory Domain and I have configured it as a Samba File Server. It works fine as long as I reboot, ...
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39 views

Python logger stops logging

On an application server (CentOs 6.4), python's native logger will stop writing to a log file after about 48 hours of continuous operation. This started occurring when we added fluentd (td-agent) to ...
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1answer
562 views

How to enable core files on CentOS 6

I am trying to enable core files on a machine running CentOS 6; however, nothing I have tried has produced core files…here is what I have done: Added the following two lines to ...
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Use OpenDKIM with a single unique key

I have a web server running under CentOS/Plesk, with plenty of domains. I would like to sign outgoing mails with DKIM for most of these domains. Is it possible to setup OpenDKIM with a single unique ...