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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Strange requests with wrong server_name and port 25 in apache / php

If I try to telnet [myserver.mydomain.com] 25 I get Trying [ip number]... telnet: Unable to connect to remote host: Connection refused but still I get strange requests such as the following ...
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1answer
22 views

httpd config for ip based virtual host

can i use an ip address for ServerName in virtualhost? i have setup one similar but it is not resolving to site [I do not have a domain] <VirtualHost 180.170.180.244> ServerAdmin ...
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1answer
24 views

Device eth0 does not seem to be present on new kernel with virtualization modules loaded/compiled on kernel 3.15.6

cat /etc/udev/rules.d/70-persistent-net.rules SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:15:5D:02:14:22", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0" ...
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2answers
48 views

CentOS 6.4 root account inaccesible via tty login or remote ssh

I was doing some maintenance on my web server (via root account over ssh) after several months of disuse. I shut it down yesterday and today, after startup I can't log in to root account at tty or via ...
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1answer
37 views

Hyper-v Virtual Network Switch Configuration

I have Hyper-v Running. What I am trying to do is setup a CentOS firewall box which will forward all traffic to the 2nd VM CentOS box which has an internal adapter and only seen by the 1st VM ...
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1answer
15 views

Correct setup of virtual hosts on Apache?

I have a problem figuring out the correct configuration for Apache2 virtual hosts on Centos6 server. I have a clean Centos6 installation with apache2 (httpd) installed, and by default there is ...
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1answer
29 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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1answer
15 views

Tomcat7 Setup - CentOS 6.3

I have tomcat7 packages installed as follows [root@mongos lib]# yum list installed | grep tomcat7 tomcat7.noarch 7.0.39-1.jpp6 @eng-support-jpackage ...
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4answers
218 views

How do I Control the Ordering of Network Interfaces?

I'm attempting to configure a machine with 3 NICs, the first two are built-in GbE controllers, the third is a 10GbE controller. Via NetworkManager, I've configured the 'first' GbE NIC (which at the ...
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7 views

setting up snort 2.9.x with barnyard2

These how to guides on the interent are outdated also the software it is relying on is not up to date with PHP5.5. I have done some hacks with ACID and ADODB to make part sof the gui to work. I have ...
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36 views

Nagios 3.5 can't send notification email despite nagios logs ok / centos6

I spent hours trying to make nagios send email notification. my contact configuration is quite simple : I juste have one : nagiosadmin, and he is the default contact. In /var/log/nagios.log, nagios ...
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1answer
10 views

hiera.yaml is not loading on vagrant provision

Whenever I provision vagrant all the data is nil. When I ssh in and specify /etc/puppet/hiera.yaml as the config option i can get the values. How can I get vagrant to use the right hiera.config file? ...
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18 views

CentOS 6.5 blank screen after an update [migrated]

I just updated my CentOS 6.5 with the following command: sudo yum update after the update it asked for a restart and I did it but than now when the loading bar finishes loading I have a totally ...
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1answer
15 views

OpenVZ Local Network

I recently aquired 7 OpenVZ Virtual Private Servers for a load balanced website. 2 Load Balancers 3 Web Servers + MySQL API Server + MySQL Storage Server 2 Storage Servers (For PHP Sessions and ...
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40 views

postfixadmin Could not log into IMAP/POP server

I had installed and configured dovecot, postfix, and postfixadmin step by step from this tutorial on my server (CentOS6). But I don't know why, when I want to create Mailbox from postfixadmin then I ...
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1answer
29 views

Zabbix triggers, send mails to specific email IDs, which are not a user in Zabbix

I recently started with Zabbix for monitoring around 150 VMs. These VMs are used for development purpose only and have been assigned to specific owners. The owners do not have a user in Zabbix, as it ...
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1answer
59 views

Server sending spam - how to find out why?

I have a CentOS 6 on a dedicated server. I'm the only one with shell access to it. I host 2 Wordpress and few simple PHP sites there. My hosting company just emailed me that they blocked my port 25 as ...
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25 views

What is the correct home directory for my web application if web application is a subdomain?

NOTE: I did alter my ip address and the site names for privacy concerns. NOTE: The ip address in the error_logs is my office ip address. Centos 6 server Experiencing a lot of file not found errors ...
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12 views

MongoDB Max Connections

we are using mongodb in our application for catching a lot of the data to reduce load from our main mysql database, for the last 2 3 days we are having an issue where the mongodb will hit the limit ...
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1answer
29 views

SELinux for RHEL not persistant after reboot

So in the Red Hat exam they want you to use SELinux. If for example you install vsftp, then do setsebool -P ftp_home_dir=1 or setsebool -P ftp_home_dir on to allow the users on the server to access ...
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23 views

Is this the correct way to enable ip forwarding per interface?

I do not want ip forwarding enabled for all my interfaces (I'm using Snort inline from this host and the IPS interfaces must not forward). I need ip forwarding enabled for for my KVM guests behind the ...
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28 views

CentOS disk check errors with “Unable to find the checksum in the image”

I'm using the CentOS_6.5_Final minimum install ISO. I've added kernel-devel to the Packages directory, and then used createrepo to rebuild the metadata. Creating the repodata when in the ...
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1answer
46 views

sending email from cron in html format not text

i am trying to send email every 1 hour from cron job which is executing a php script that fetches data from database and shows in a table format. i have CentOs 6.1 where i created my cron job.firstly ...
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1answer
24 views

CentOS login GUI Issue [closed]

I have trapped in weird problem. My Setup is CentOS 6.3 64 Bit My login screen is blinking so frequently that I am unable to see and login into it. The issue is I have installed gtk2 using yum ...
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1answer
22 views

How do I fix this dovecot SELinux error in audit.log on CentOS?

I'm getting these SELinux errors in /var/log/audit/audit.log for dovecot. type=USER_AUTH msg=audit(1404794536.249:100679): user pid=28375 uid=0 auid=0 ses=2700 ...
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26 views

Siremis login say: can't open cmp file to write

I am installing siremis-4.1.0 on CentOS 6.5. I can configure Siremis. But when I pressed Siremis Launch button. My browser said: "can't open cmp file to write". My SELinux: # sestatus SELinux ...
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0answers
22 views

Server Down Every 5 Hours? Centos NginxProxy

I have my websites on a Centos NginxProxy server with kloxo panel installed. My websites become unresponsive every 5 hours and then after a reboot becomes ok. I need help troubleshooting that. Here ...
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1answer
84 views

Google reCAPTCHA not working on Linux system

I am working on integrating reCAPTCHA with my registration page and everything seems working fine except one strange issue. I have tested this code on all local machines and well on our test server ...
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2answers
53 views

grub.conf missing initrd path after kernel update

I updated a server this morning and the latest kernel panics during boot. Upon review of the grub.conf file I found the initrd path was missing. Is there a way to fix this issue? Or should I remove ...
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1answer
99 views

Using foreman to provision a vm with static ip

I am trying to provision a vm with Centos6.5 on vmware with a static ip address using Foreman 1.5.1. However, the vm's keeps getting provisioned with a dhcp address. Im doing a network based install. ...
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39 views

stripping centos packages to the basics

I am stripping a centos sever to bare bones as I would like to start basic. I have yum removed packages I won't be using (php, ruby, PostgreSQL, Webmin, Usermin, Mail, Awstats...) I am looking to be ...
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19 views

I am getting No route to host error

I am getting no Route to host error when doing a http call to localhost machine... I am using centos 6.4 machine. What things i need to check. java.net.NoRouteToHostException: No route to host ...
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2answers
162 views

error installing mysql client after installing remi php-mysql

after installing nginx with php-fpm thanks to remi repository, I get an error when I simply install mysql client : yum install mysql give me the following result (see bellow). Loaded plugins: ...
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2answers
54 views

CentOS6 PHP extension install: Cannot find php-config. Please use --with-php-config=PATH

This may seem trivial to some, but I have been developing on Windows all my life and only moved to Linux this week - all is new to me. I've been following The following guide on how to install php ...
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1answer
29 views

Execute a script before fsstab is read

For a netboot cluster, I'm creating a CentOS 6.5 root disk. The goal is to mount / read-only over NFS, and various other folders, such as /var/log, on the local disk. Here's my first idea: On boot, ...
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1answer
31 views

CentOS Plesk update 45 won't install

i have a CentOS 6.5 Server running Plesk 11.0.9 #44. When i try to install update #45, i get following error message: PPB_11_0_9-dist | 951 B 00:00 ...
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1answer
26 views

Directadmin: an error while trying to configure php

I'm trying to build PHP on a Centos6.5 system with Directadmin and it fails on configure step: checking for MySQL support... yes checking for specified location of the MySQL UNIX socket... no ...
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1answer
22 views

not able to connect to server on web, but working perfectly on localhost centos

I have been trying to setup my centos web server and I succeeded last week in doing so. From the last week the server was running perfectly, but when today I restarted the server, for some reasons, I ...
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3answers
36 views

How do I get iptables to allow a new port (for a webserver sockets handler)

In the local development server, I don't have any iptables rules (running on a Mac). The production server however, runs CentOS 6 with certain rules. I need to add a rule that allows the client to ...
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3answers
578 views

Update from zfs-0.6.2-1.el6.x86_64 to zfs-0.6.3-1.el6.x86_64 has made by zpool unreadable

After running # yum update zfs and restarting my CentOS 6 ZFS on Linux system can no longer see or interact with it's zpools. # zpool status no pools available # zpool import zpool: ...
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2answers
343 views

centos 6 epel alternative repository replacement

I've installed EPEL repository already on my server. I wanted to install something new and I get this error with yum : PYCURL ERROR 22 - "The requested URL returned error: 403 Forbidden" Trying ...
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1answer
94 views

Installing ext-libevent, ext-libev, ext-event for php

I installed reactphp on my LAMP environment (CentOS 6.4). After the installation was successful, I got this message: react/react suggests installing ext-libevent (Allows for use of a more performant ...
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1answer
46 views

Jetty JMX setup for remote access

I am having some issues getting JMX working on Jetty(9.1.3.v20140225), so I have had a read over the Jetty doco on this. So I have added the following to the jetty.conf # ...
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1answer
41 views

Easiest way to sync only package and dependencies in spacewalk?

From the web UI and the documentation, spacewalk seems to want to download everything in a given repo regardless of relevance, which isn't so bad if you use all / most of the packages within a repo, ...
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2answers
47 views

How do I uninstall/remove CPAN?

Is there a way to completely remove CPAN from my machine? I tried searching Google for a way to do this, but all of the results are focused around uninstalling the modules.
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1answer
24 views

Running PHP in HTML Files on NginxProxy Centos

I have a ngnixproxy server on Centos 6.0. Wordpress and php files are running fine. But I have a static site with an html file with php code in it. The code is not working and the server is ...
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30 views

WHM - using SSH, what settings to change to enable login via MYIP:2086 / MYIP:2087

I somehow introduced an error into my setup. All the sites are still displaying properly, and I can access via putty quite nicely. But I cannot access WHM. I had set it to force login via the ...
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1answer
54 views

Server taking too much time to first load [closed]

I have a VPS server with CentOS 6 purchased from MochaHost. It has WHM/cPanel installed and I have full root access. The websites that are on this server load very slowly but when I use pingdom tools ...
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1answer
47 views

how to avoid console network error (host is not communicating) when passwd or update?

I am trying to change the root password and update ssl package but the commands passwd or yum update {package} make the console loops endlessly. I have set the buffer to 600 sec. which I am reaching ...
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3answers
300 views

VMware ESXi CentOS 6.4 kickstart installation

I was trying to do a kickstart installation for CentOS 6.4 but it always show me a warning of re-initializing the HDD as it say may contain invalid partition table or a virtual disk. I have added ...