CentOS stands for Community ENTerprise Operating System, the most popular Linux distribution for web servers with almost 30% of all servers using it. Third-party software is not included in the base.

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Resolve hostname of a Centos 6.5 dedicated server with a FQDN registered with Godddy

I have a domain registered with Godaddy and I am setting up a dedicated server for learning purposes. I want the server's hostname to be resolvable. I created custom NS records (ns1.mydomain.com & ...
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8 views

How do i attach running lftp process

so i have lftp process running for days at a time on a centos machine. I read the lftp man pages and discovered the attach command. However when i call it with the respective process id from the lftp ...
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1answer
15 views

Merge two partition without gparted on Centos 6.*

I have been trying to merge two partitions on my centos 6 virtual machine. I have only command line access to this machine. My system look like this: [x@x-y ~]$lsblk NAME ...
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3answers
37 views

A way to trigger an SELinux policy violation?

I'm studying the basic workings of SELinux and would find it useful to trigger a denial. My test machine is running CentOS 7, it's a basic server install without any extra services, and getenforce ...
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16 views

Can't increase ulimit in Centos 6.6 - never persists

I'm trying to increase the nofiles limit in my Centos 6.6 system. My user is 'hchiu', and this is what I appended to my /etc/security/limits.conf: * hard nofile 128000 * soft nofile 128000 I've ...
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1answer
12 views

converting .VDI to .VHD CentOS will not boot

I have a CentOS vm created in VirtualBox. I need to convert it to VHD to use on my hyper-V server. I used the vbox manage tool and the conversion went fine. When i try to boot it up with Hyper-V it ...
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19 views

Setup https and http on wordpress nginx

[root@serv01 nginx]# cat nginx.conf # For more information on configuration, see: # * Official English Documentation: http://nginx.org/en/docs/ # * Official Russian Documentation: ...
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1answer
26 views

“Failed to start SYSV” when starting self-made service

I'm trying to set up a service, on root, that will automatically start monetdb database after system startup because monetdb doesn't provide such mechanism. I've created /etc/init.d/monetdb script ...
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3 views

How to tune the XFS file system when you use LVM striping on top of HW RAID?

For example your LV strips (512k) over two PVs each HW RAID 7disk x 1MB RAID6. (what about if the LV is mirrored?) I cant seem to find information on tuning the su/sw values in this configuration. ...
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1answer
22 views

CentOS vhosts causing issues with Vagrant Share command

I'm running Vagrant on my Mac. I have a CentOS 6.4 box running with the Virtualbox provider and puppet (not important in this context). This is a basic Vagrantfile to show the issue I have: ...
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1answer
56 views

Gitlab 7.10 install doesn't create proper ssh git user config?

I am setting up a Gitlab instance on my home VM lab and am baffled with the way SSH is configured in Gitlab so I would appreciate some insight into whether I am doing something wrong or is Gitlab ...
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18 views

WordPress won't load unless iptables is disabled

I am running CentOS 6.6 using nginx. WordPress will not load unless iptables is disabled. I tried to add the 9000 port for fastcgi, but that did not work. I am guessing it has something to do with ...
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14 views

Im trying to user docker to install cloud9 ide

Im trying to user docker to install cloud9 ide on my centos7 vm. Im using this docker image: https://github.com/kdelfour/cloud9-docker Ive set firewalld to set 80 and 8080 to public, ive tried ...
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2answers
33 views

Samba: Need guest/everyone read-only and writeable by users in group

I can't get this to work correctly. I can login as guest fine but when I enter the username and password for a user on the server, it doesn't accept it. Not even root. smb.conf [global] ...
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15 views

Cross-Distro NFS Mount Not Fully Writeable in Ubuntu

I'm relatively new to setting up NFS mounts and I'm trying to get things started in the AWS cloud. I ultimately want to have a CentOS box which serves as the NFS server and can have different sorts of ...
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13 views

I am having trouble getting yum update to run cleanly in Centos 7. It seems I have a conflict with the Network Manager that I cannot resolve

I am having trouble getting yum update to run cleanly in Centos 7. It seems I have a conflict with the Network Manager that I cannot resolve. CL output shows: Error: Package: ...
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1answer
20 views

MySql service start fails without anything meaningful (CentOS 7)

[root@myserver my.cnf.d]# service mysql start Starting MySQL. ERROR! And this is all I get. I tried checking the logs but couldn't find anything related to this. The database worked perfectly fine ...
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1answer
11 views

Sub-domains keeps redirecting me to Main web-site

I have just upgraded my version of LAMP Environment. Rest all the things are working fine but with Sub-domains i have a challenge. I have a Main website abc.biz and 5 to 6 sub-domains with it as ...
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2answers
44 views

Centos 7 detecting only 3 GB of RAM

Centos 7 is detecting only less than 3GB of RAM instead of 4 [root@compute ~]# free -m total used free shared buffers cached Mem: 2913 425 ...
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1answer
100 views

Package: otrs-4.0.7-01.noarch Requires: perl(Template) while installing OTRS in centos 6

While I was trying to install OTRS 4.0.7 in centos 6, an error occurred. I tried to Google it, but I cant get the results to resolve the issue. Loaded plugins: product-id, refresh-packagekit, ...
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1answer
56 views

Centos 7 - ping 8.8.8.8 (connect: Network is unreachable)

I think I have a routing problem. I have set up a CentOS VM, it is connected to my network and I can ping other machines. I cannot however ping anything outside of my network. [root@localhost ~]# ...
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1answer
35 views

VirtualBox with Centos 7 minimal install, cannot connect to network

I just installed Centos 7 on a VM I'm running from VirtualBox on a windows machine. I installed the latest minimal release. I then went about setting up a static IP. When I try to access the machine ...
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1answer
52 views

Docker : cannot access internet from container

I am running CentOS 6.6 behind a corporate proxy. I've installed docker, and I had to make some modifications in order for the daemon to access the Docker Hub through the proxy. This part is working ...
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1answer
9 views

Get Logical Volumes Group name in legacy grub

I am currently in GNU GRUB v0.97 Restore mode and I have CentOS 6.5 installed with /boot partition separated and rest of filesystem is in Volume Group. But, I dont remember volume group name, is there ...
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22 views

Strange network behavior CENTOS 7 and Vmware workstation

I have fresh install of CENTOS in Vmware workstation 11 on my Laptop running Windows 8.1. I installed samba and everything worked fine. When I disconnected from my home network strange things started ...
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12 views

'kstriped' process on Centos 6?

I've been trying to figure out what the process 'kstriped' is doing on my machine. I can't seem to find any information on it in my Google searches, which has me worried. What does this process do? ...
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83 views

COD4 Linux game server doesn't send UDP packets as response to broadcast

I am setting up a bunch of Game servers for a medium sized LAN tournament using CentOS 6 and the various Linux binaries used for the game servers. With COD4 the servers did not show up in the server ...
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12 views

Connecting to the Host and Internet from an Internal Network in VirtualBox

In order to simulate a network, I have 3 VMs set up in VirtualBox called VM1, VM2 and VM3. They each have 2 network interfaces all of which can ping the others at the moment. The Network interfaces ...
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0answers
39 views

Site hacked! Malware on site being accessed by some IPs [migrated]

I found this php malware file on my server. And when I went to 'apache status' in WHM. I saw some entries where some IPs where trying to access them. Is there a way I can tell how the malware file ...
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1answer
35 views

Networking for CentOS 6.6 on VirtualBox

I have created 2 guests with 2 Network interfaces each - all 4 of which have the "Attached To:" set to "Internal Network". The aim is to create a simple internal network with no access to the Host ...
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1answer
57 views

Debian user learning CentOS: how to install this package?

After always having worked on Debian I now have to use some CentOS servers. I need to install a package which I always install on Debian servers using sudo apt-get install python-zbar. So I tried ...
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18 views

centos 6.4 kernel panic error

I have a CentOS 6.4 dedicated server with cPanel installed, and I got the error message below after a reboot. Kernel panic - not syncing: Attempted to kill init! I tried the boot menu upon ...
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1answer
35 views

How to grep for line numbers in a binary file?

I'm on Centos 5 Linux and using GNU grep v2.5.1 and looking at a 36GB log file. It is huge and I need to find around a million lines starting from the occurrence of a string 6307459 in the log file ...
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33 views

Web connection/ssh connection not working with linux server

A little bit of a newbie to this area so please go easy if I haven't got everything down. The problem I have is I can't ssh to a linux centos server (just getting a timeout), and I can't ping from it ...
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0answers
15 views

tuning windows 7 to centos linux smb over a long distance VPN connection

I'll try to fill in as I can, but here's the basics We have a VPN (I believe running openvpn) between a site in singapore to a main site in london, with the main site.Its a purely ipv4network. We ...
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1answer
131 views

Gtk-WARNING **: cannot open display

I have centos 6 minimal (headless) as a Host and installed ubuntu 14.04 Desktop as a guest and using KVM. There is a web application deployed inside Guest, and it opens and closes one GTK ...
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1answer
66 views

ssh: connect to host * port 22: Connection timed out

I have CentOS 7 running on a VPS machine and after a computer restart, I could no longer SSH to it. $ ssh -v <IP> OpenSSH_6.6.1, OpenSSL 1.0.1e 11 Feb 2013 debug1: Reading configuration data ...
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1answer
33 views

PHP code won't run on CentOS like on Debian

I have a Debian machine running Apache and PHP 5. I have a website that runs very well, no database back-end just plain PHP. I am trying to move that PHP website to a CentOS based machine. But I am ...
2
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1answer
67 views

sudo: effective uid is not 0, is sudo installed setuid root? for normal users

strangely I cannot run the sudo command for every new account I create that is not root. The server is completely new and wasn't touched so I don't know what's wrong. for every command I try to run ...
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1answer
33 views

Is there a way to rip DVDs & CDs on headless CentOS box?

Has anyone set up headless DVD & CD ripping on a CentOS box? I’ve seen a few posts and threads about other operating systems, but nothing about CentOS / Fedora / Red Hat, and nothing recent. I’d ...
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16 views

Script does not start when OS start|reboot

I have a file at /etc/init/pdoneVendorBroker.conf with the following content: description "PDone Vendor Broker" start on runlevel [234] stop on runlevel [0156] respawn exec php ...
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16 views

Is there a “lowriter” command equivalent for CentOS 6.4 (Final)?

I would like to know if there is a command, that can be run in a terminal in CentOS, equivalent to the lowriter command found in Ubuntu? I’m running CentOS 6.4 (Final).
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1answer
64 views

Determining needed repository for software

I am a beginning linux user (centOS currently). I tried to install the terminator terminal application. I understood that it is not in the default repositories of cent-os but it should be in the ...
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68 views

Totem Videos unable to play MOV (Failed to search for plugin)

I'm trying to play file.mov file with Sound & Video -> Videos (3.8.2) on my CentOS 7: $ file file.mov Create Meeting using IS Task room.mov: ISO Media, Apple QuickTime movie $ cat ...
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10 views

How to set up Qmail to accept joining email list via Mailman LISTNAME-join@DOMAIN?

My configuration: CentOS 5.8, Plesk 11.0.9. I am trying to make my mailing list accept another way of joining a list. That is to join the Mailman mailing list by sending email to ...
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1answer
58 views

Cannot install Guest Additions on CentOS virtualbox

Windows 8.1 host, have previously successfully created a Ubuntu virtualbox on it. Now I wanted a CentOS box. Choose Redhat 64 bit and created a virtualbox. Downloaded an iso called ...
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35 views

Add module to nginx after installation

Hi i did install nginx with this command on centos 6 sudo yum install nginx and it work but i need to compile wit rtmp module so How can I find the path to make some changes ./configure ...
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36 views

How to slice video in remote http server using ffmpeg?

I want to slice video from remote host . i am using following command to do this ffmpeg -i https://s3-us-west-1.amazonaws.com/path/to/video/messi.mp4 -ss 00:00:03 -t 00:00:08 -async 1 cut.mp4 ...
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1answer
13 views

Dozens of ssh-agents listed under top

I noticed this morning that our server was running slow so I ran a Top command sorted by mem and found a few apache instances running nothing out of the ordinary but I noticed several pages worth of ...
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9 views

1 chroot sftp user that is able to traverse all other chroot sftp users files/folders

I have a chroot environment that I have setup on CentOS 6. We have users for all of our trading partners and I would like to create an internal user for another department that can sftp in and only ...