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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PMTA wont start

I ran a debug and this is what it spit out... Startup error: Error initializing thread: Error binding socket to 0.0.0.0:25, status = EADDRINUSE Never seen this before. All help is appreciated.
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1answer
786 views

Would cPanel or Plesk slow down my site/server? [closed]

My senior sysadmin told me that if I install cPanel or Plesk (or other panel) on a client's machine as it would slow down the server/site (WordPress on LAMP). This doesn't seem to make logical or ...
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1answer
1k views

Crons not working on ISPConfig3

I have a CentOS LEMP stack with ISPConfig3. Everything is working perfectly, except for the cron jobs. I have tested the commands from command line, and they seem to be working fine, but when I put ...
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1answer
199 views

CentOS NFS server session crashes

I recently received some alerts that 2 of my backups failed to an NFS mount in my environment. After reviewing the logs I realized that the software was unable to establish a connection to the NFS ...
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3answers
1k views

want to Make software router having two nic cards using centos 6.4

I'm new on CentOS. I have a CentOS 6.4 system having 2 NIC cards. I want to setup a gateway so I can get internet from public ip over 1st nic card (eth1) and forward the network over 2nd nic card ...
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3answers
4k views

virt-install KVM “Cannot open display ”

So I am trying to create a VM using KVM (on CentOS 6.3) and the command I use is as follows: virt-install --connect qemu:///system --virt-type kvm --name ffVM32 --ram 1024 --disk ...
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0answers
1k views

Cent OS 6.4 VPS went down unexpected

I have a cloud VPS at Digital Ocean , Recently it went down on its own, i was using pingdom alert which notified me about it, so i booted up the VPS again to find out what caused this . How can find ...
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1answer
133 views

Keep guest time after shutdown using KVM/libvirt

I use KVM/libvirt based virtualization. Some of vm guests have set date far in future (2-3 years, different month, day, etc) After each guest shutdown down, the date is being set to host date ...
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1answer
214 views

Spamassassin failing to parse config line with user_scores_custom_query rule

I'm trying to setup spamassassin per user config files via MySQL, and I get this error: Sep 8 12:09:13.668 [12307] warn: config: failed to parse line, skipping, in "/etc/mail/spamassassin/local.cf": ...
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1answer
60 views

CentOS Postfix Server Hanging on NULL Recipients

I have a CentOS server that runs postfix and whenever a null recipient is sent to it, the server freaks out. Instead of simply rejecting the mail, it doesn't know what to do with it and tries over and ...
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1answer
2k views

CentOS 6 restrict user ssh access to his home folder

I am trying to restrict a newly added user to his homedir /home/username. Don't want him to be able to cd out of it. I have this my sshd_config: Match User username ChrootDirectory %h ...
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1answer
2k views

Dependency problems updating Centos 6.4, 64 bit

I'm having dependency issues while trying to update Centos 6.4 ,64 bit here is the output when I run yum update: yum update Loaded plugins: fastestmirror, priorities, refresh-packagekit, security ...
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2answers
2k views

Can I use the worker MPM with mod_php?

After reading this answer, I decided to change httpd's MPM on my server to worker. But while editing /etc/sysconfig/httpd, I noticed this comment: # The default processing model (MPM) is the ...
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2answers
1k views

Is there a big difference between CentOS 6.4 to 6.2 and should I up/down-grade?

We have two separate managed web servers. One is running CentOS 6.2 and is used as a production environment for a number of sites. The second one runs CentOS 6.4, and hosts some internal applications, ...
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1answer
265 views

Multiple POST SQL injection from same IP [duplicate]

Recently I checked my Apache domlog and noticed the following attack: POST ...
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2answers
2k views

ImageMagick for Centos 6.4 [duplicate]

I have already installed ImageMagick on my server which is running centos 6.4 yum install ImageMagick Version is very old : 6.5.4-7 2012-05-07 Q16 I discussed about this with ImageMagick's official ...
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0answers
353 views

How to disable MD RAID or prevent degraded arrays from starting. (Centos 6.4)

I am trying to disable software RAID at boot time. My ultimate goal is to prevent the system from starting raid arrays that are in a degraded state. rd_NO_MD is present on the kernel command line by ...
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2answers
339 views

Cent OS 6 clock 3 minutes 35 seconds in the future

I run Cent os 6 64 bit on linode. server (incorrect): date Thu Aug 29 11:41:00 BST 2013 client (correct): date Thu Aug 29 11:37:25 BST 2013 As you can see the server clock is ...
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2answers
1k views

CentOS 6 missing dependencies for default PHP

I have a brand new Dedi install of CentOS 6 x86_64, nothing has been done to it but install rpmforge and htop. Other than that we are default, well as default as GoDaddy gives which is garbage ha ha. ...
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2answers
6k views

Is a hardware watchdog already active at my CentOS server?

I rent a dedicated server (with Intel Haswell CPU and custom hardware) at a lowcost hosting service and use it with CentOS 6.4 / 64 bit Linux (with stock kernel: 2.6.32-358.14.1.el6.x86_64). Every ...
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1answer
967 views

PHP-FPM not working as global PHP handler on Apache, CentOS 6.4

I'm trying to switch PHP handler on my server from mod_php to PHP-FPM. But something with my setup is worng. When I'm trying to open server.com/info.php, it's being opened as standard text showing ...
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1answer
261 views

TOLVEN installation: Test Database and LDAP Connections After ConfigPhase1

I am trying to install tolven, and following the manual http://wiki.tolven.org/index.php/Installation_Guide My linux system info is as follows: root@localhost:/> cat /etc/issue **CentOS release ...
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2answers
1k views

httpd unpacking error on installing subversion and mod_dav_svn

I am unable to make subversion working on centOS 6.4. I am getting httpd unpacking error on installing mod_dav_svn. I am getting the following error. Running Transaction Installing : ...
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2answers
46 views

How can I distinguish the base packages from the rest when running rpm -qa?

I wrote a script which along other tasks connects to a remote server and pulls a list of all installed packages and installs them, Like so: echo -e "\e[36m#===# Getting list of packages to install ...
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1answer
484 views

Change the default IP address of a CentOS 6 dedicated server

I have a dedicated box running CentOS 6. I'd like to change the default IP address, I googled a lot and I found this suggestion: (1) Run these two commands via SSH: sudo -n ifconfig eth0 down sudo ...
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1answer
4k views

PHP 5.3.27 on CentOS 6.4

Can someone tell me how to setup PHP 5.3.27 on CentOS 6.4 without using remi repos and without compiling PHP myself? I tried googling a lot but it always gives me results for upgrade on CentOS 5.
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1answer
865 views

How to grant privileges to mysql user? CentOS 6 and ZPAnel [closed]

Installed ZPanel on CentOS 6. Created user, added database. But user has no privileges. Tried to create in SQL shell with GRANT ALL PRIVILEGES ON db_name.* To 'name'@'localhost' IDENTIFIED BY ...
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1answer
3k views

Unable to access VLAN host from VLAN interface in CentOS

I am playing with VLAN (Virtual LAN) configuration on CentOS 6.4. I have 2 interfaces, eth0 and eth1. I have configured 2 VLAN interfaces eth0.20 and eth0.30 as #file: ifcfg-eth0.20 #------------- ...
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3answers
2k views

Centos: How to install all packages of one server on another?

I've done rpm -qa > file and now I want to copy the file to another server and run through it and install all these packages on the new server. I did something like this: for pkg incat file; do yum ...
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2answers
1k views

CentOS 6.4 and Audio Conversion

I'm having issues with setting up a Centos 6.4 server to convert audio tracks needed for a project I'm currently involved in. So users of a site I've been working on can Upload tracks, but because ...
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1answer
105 views

Centos6.4: User home directory for sftp

Currently setting up a Centos6.4 box and are wanting to jail sftp users upon login. I've been following the notes here http://www.thisisnotsupported.com/sftp-chrootjail-on-centos6. But I have one ...
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1answer
3k views

How to Install php ssh2 in CentOS 6 powered Nginx VPS

I'm trying to install php-ssh2 on my CentOS 6 powered VPS. I'm using Nginx as web server. I want to tell you guys that I've installed php-fpm using REMI's repo. I'm not a VPS expert. While setting up ...
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2answers
2k views

How To Install Xcache on CentOS 6 and Nginx?

I've bought a new VPS and I'm not a linux geek. I've already installed LEMP stack on CentOS 6. I just tried to install Xcache on my VPS. I've used the below command to install Xcache but it shows an ...
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1answer
477 views

Error 500 when accessing URL - Centos 6 (selinux disabled) - NGINX - PHP-fpm and GITList

Installed Centos 6 (selinux disabled) - NGINX - PHP-fpm and GITList. when I access my URL I get a server error (The website encountered an error while retrieving http://git.sastratechnologies.net/. It ...
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2answers
5k views

Incrond running but not executing commands CentOS 6.4

I have copied this question over here from StackOverflow... I have installed incron from the EPEL repository (0.5.9) (before you ask; YES, I also tried downloading the source and compiling locally ...
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2answers
955 views

MySQL won't start: “Can't start server : Bind on unix socket: Operation not permitted”

Running a minimal Centos 6.0 build as a vagrant box, with SELINUX=permissive. Right off the bat, performing a "yum install mysql-server" and then "service mysqld start" it fails. Inside ...
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2answers
367 views

I'd like all files created in a specific directory to automatically get 755 permissions, is that possible?

The relevant folder is over-written every couple of days but I want it's content to retain the 755 permissions. I've tried chmod g+s dir but to no avail. Is that even possible?
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1answer
495 views

yum update fails to unpack archives for nodejs dependencies on centos 6.4

I run "yum update" on my CentOS 6.4, but the Node.js package and dependencies fail with multiple errors like this: Error unpacking rpm package nodejs-fstream-0.1.23-1.el6.noarch error: unpacking of ...
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2answers
110 views

Dividing sets of services on a single server

A group which I'm part of has grown and is about to move from using DigitalOcean VPSes to a single colocated server. At this point, we don't have a need to distribute our service very highly. This ...
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1answer
817 views

How to Isolate source of spam on Centos 6.3 Plesk 11 server

Been spammed and the header is showing: X-No-Relay not in my network X-No-Relay not in my network X-No-Relay not in my network X-No-Relay not in my network X-No-Relay not in my network Received ...
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1answer
480 views

Cannot ping, neither can use the server as the DNS. but can ssh to the server from any IP address

I have a server that holds my server services. I'm able to ssh to the server: ssh root@example.com enter password: root@example:# But, I can't ping the server: $ ping example.com PING example.com ...
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1answer
2k views

Max connections limit confiquration on Appache server - CentOs 6.4

We have an Apache's and a CherryPy (Python) server running on on CentOs 6.4. Yesterday the Apache server suddenly went down while the CherryPy which uses the port 8080 works fine. We are trying to ...
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1answer
3k views

Centos BIND server: Unable to start named daemon

I've installed a fresh Centos server and installed bind and bind-utils to it. The content of /etc/named.conf is: # create new options { directory "/var/named"; allow-query { localhost; ...
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1answer
3k views

Disable root login for dropbear? [closed]

Linux noob here. How can I disable root login for dropbear? What I've done so far adding DROPBEAR_EXTRA_ARGS="-w -g" into /etc/default/dropbear (not working) adding DROPBEAR_EXTRA_ARGS="-w -g" into ...
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2answers
551 views

Centos: error Configuring a DNS server for the first time, “options: command not found”

I'm configuring a DNS server from scratch and it's the first time i'm doing it. I've used yum install -y bind bind-utils in order to installe the required tools. I then edited /etc/sysconfig/named ...
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1answer
98 views

How can I configure my server to make it into a Virtualization Host?

I have an IBM server running Centos 6.4, I have only one Public IP. I need to create two virtual servers (a full guest OS running on emulated virtual hardware) in it and point them to two different ...
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1answer
79 views

Effects of using mock to rebuild packages on Centos 6.4

Currently I have rebuild ossec on centos 6.4 using mock. Will this have any effect on the stability of the os and also with regards to any other updates on the system? Any chance to cause crashes?
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1answer
1k views

Install ssl on linux centos 6 apache 2.2 server

I have to install SSL on my server centos 6 apache 2.2 server. First I have genetraeted CSR files as directed on below link http://www.hosting.com/support/ssl/generate-a-csr-on-a-linux-server and ...
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1answer
2k views

Squid Proxy and AD auth generating errors on Squid startup

I need some advice with an error i am getting when trying to start Squid which has integrated NTLM / AD auth setup. heres the back story: I've followed this guide word for word on the setup, ...
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1answer
2k views

Centos server rebooted unexpectedly and i'm unable to process crash file, what am i doing wrong?

One of my Mysql replication servers has rebooted during the night and i'm trying to find the reason. Running the command last shows this line: reboot system boot 2.6.32-71.29.1.e Wed Jul 31 04:37 - ...