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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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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19 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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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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What's the different between CentOS6 and CentOS7 GA [on hold]

What's the different between CentOS6 and CentOS7 GA. Apart from kernel and GUI and anaconda installer, what are major different.
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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
29 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
18 views

CentOS login GUI Issue [on hold]

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
10 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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12 views

Convert adduser command to CentOS [on hold]

I am installing Kamailio following this guide and I cannot use command below on CentOS 6.5: adduser --quiet --system --group --disabled-password \ --shell /bin/false --gecos "Kamailio" \ ...
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13 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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21 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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55 views
+50

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
22 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
58 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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27 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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17 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
76 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
39 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
27 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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17 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
18 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
29 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
458 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
222 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
59 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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26 views

tcpdump - how to archive running dumps

I need to check the packet flow on certain ports, but i need this to stick over reboots and compress the output once it reaches a certain size. The command i use and have placed it on ...
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19 views

VolGroup17-ROOT causing high disk usage [duplicate]

I have a dedicated server with CentOS 6. I have created two vps on the server. I noticed high disk usage and logged into the dedicated server using ssh and ran df -h: Filesystem ...
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1answer
28 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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29 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
45 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
19 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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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
47 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
45 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
209 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 ...
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CentOS-Like configuration of Vim on Ubuntu

Whenever I use a CentOS System, there's always a pleasant configuration of vim which mainly does the following: Remembering position of closed files Colour mode (!!!) Bash has colours There's lots ...
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1answer
305 views

Why do I get different openssl versions?

I'm trying to check if I running the latest OpenSSL version, my main concern is the heartbleed bug. I tried 2 commands: openssl version yum info openssl openssl version output OpenSSL ...
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111 views

NRPE: “CHECK_NRPE: Error receiving data from daemon.” error in the gui, but the check works from terminal, what could be the cause?

I'm monitoring a few Linux servers using NRPE and most of the checks are working. Actually, the only check which doesn't work is check_disk. Running a remote check_disk from the Nagios server ...
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64 views

centos TCP/IP connection very slow

I have a VSP (centos6.1 64bit) with 4gb ram. It always runs well, but in recent few days, the server become slowly. open a small css file need 22 seconds(2kb). tested in home/office/phone with ...
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57 views

Apache missing php module

I installed httpd v2.2.15 and php v5.5.13 via yum. I first noticed the problem when I tried to access my site and it displayed the PHP code. Then I discovered that there is no php module in ...
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2answers
55 views

How long does it take to reboot CentOS 6 server remotely? [closed]

I am renting a dedicated bare metal server running the latest version of CentOS. It's new and I haven't fully configured it. I updated the existing packages and rebooted the machine remotely using # ...
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58 views

CentOS 6 KVM Host cannot connect to Internet while VMs can

I've configured a CentOS 6.4 server as a KVM host running multiple VMs. VMs running on this KVM host are fine. The problem is: the host itself cannot connect to the Internet. External addresses ...
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117 views

Either, nginx+php-fpm bad config or nginx+php-fpm cannot handle high query?

I have wordpress installed in my server configured(hopefully with nginx+php-fpm+mariaDB). I am trying to import using wordpress importer a 1.5MB xml file. Everytime I try to upload it using the ...
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1answer
50 views

CentOS 6 DHCP server configuration

I have a CentOS 6 server running on a virtual host. The IP address on this host get assigned through DHCP host and another interface has an static IP ( a test network). I want to setup an private DHCP ...
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2answers
257 views

can't install mysql-devel on centos 6.5

I need mysql-devel package to be installed on my CentOS 6.5 running Percona 5.5 (already installed & running). When I try to install the devel package like this: yum --enablerepo=remi install ...
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1answer
77 views

Cant make includes with any domains [closed]

in the last days i have been experiencing this problem. I cant make php includes to any domains any more. I tried these: include "http://myownsite/page.php"; include "http://yahoo.com"; include ...
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1answer
219 views

Nginx + PHP-FPM on Centos 6.5 gives me 502 Bad Gateway (fpm error: unable to read what child say: Bad file descriptor)

I am setting up a standard LEMP stack. My current setup is giving me the following error: 502 Bad Gateway This is what is currently installed on my server: Here's the configurations I've ...
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1answer
35 views

Cannot find NFS server logs on CentOS 6.5

I cannot find the logs for a NFS server on a CentOS 6.5 machine. grep -Rni "nfs" /var/log/messages returns nothing useful. The NFS service is running and I am able to mount the NFS share from most ...
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32 views

Glusterfs : 'No route to host' for fstab mount in CentOS

I am using glusterfs, and am using fstab in this way: <IPADDRESS>:/<VOLUMENAME> /some/mount/point glusterfs defaults,_netdev 0 0 but the logs for the mount continue to say the following. ...
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141 views

postfix failed to start CentOS 6.5

DISCLAIMER: I am new to CentOS, so please forgive me if I overlooked something simple. Here is my issue: I recently just reformatted my server to CentOS 6.5 x64 and I have been having issues getting ...