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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Installing Virtualbox 5.0/Vagrant on CentOS7. Ubuntu box not working

Here is the story: I tried to create an Ubuntu box with Vagrant on CentOS 7. This didnt work because I could not connect to the Box through SSH, the log indicates the box wont accept the IP. Log: 00:...
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10 views

how to run a shell command every boot in CentOS 6.6?

I want to use this command every boot >/etc/udev/rules.d/70-persistent-net.rules so I wrote it in /etc/rc.local but it didn't help , is ">" a problem ? my purpose is to clear /etc/udev/rules....
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1answer
38 views

Linux - create screen as another user

I'm trying to create a new screen on my server (CentOS 5.11), but instead of starting it with my user, I would prefer to use another user with restricted permissions, just to be on the safe side. So, ...
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1answer
17 views

How to use mv command to remove unwanted character from multiple files in the same directory

I have in a directory some files: agent_datad.bin _codecs_cn.cpython-34m.so _Crypto.Cipher._ARC4.so Crypto.Hash._RIPEMD160.so ... other files How can I remove the _ from the beginning of each file ...
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3answers
2k views

centos upgrade openssl - CVE-2016-0800 - drown attack

Because of recent vulnerabilities discovered in old openssl versions I have to upgrade it. But there is no current Version in the Centos Repositories... Is there a trustworthy repository out there ...
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2answers
96 views

Are there technical reasons why specific directories can or should be excluded from backup in Linux, and what are those directories?

I am doing a backup of my Linux CentOS 6 using Rsapshot. I already have daily backups that do only critical things like databases and emails. However, I'd like to set-up a "total" backup where ...
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2answers
103 views

Can't telnet to a Linux port

There is the following listener: telnet -na | grep 8000 tcp 0 0.0.0.0:8000 0.0.0.0:* LISTEN I can do telnet 1.2.3.4 8000 from the 1.2.3.4 server and it connects, but same command from ...
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1answer
160 views

I'm getting “Bad argument setup” while running VirtualBox on Linux

I'm trying to run Oracle VM VirtualBox, and I'm getting following error: # /sbin/rcvboxdrv setup Bad argument setup # cat /etc/redhat-release CentOS Linux release 7.2.1511 (Core) # uname -a Linux X ...
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38 views

How to make Postfix to bcc of incoming mail when the mail is delivered to an alias

When you configure recipient_bcc_maps straightforward, it works fine. But when an email is delivered to an alias that is defined in virtual_alias_maps, which can be either a name alias or a domain ...
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1answer
24 views

Is mixing software RAID disks across SATA and eSATA going to have any issues?

I have two eSATA drives running successfully in a software RAID on CentOS. I would like to make this a three disk mirror RAID by adding the third drive from the internal SATA drive. Are there any ...
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58 views

How do I include files (like post-scripts) for kickstart to a CentOS 7 bootable installation USB in Windows?

I'm trying to create a installation USB for CentOS 7 automated with kickstart. The kickstart files including packages & post-scripts is around 500MB and I'd like to include those in the USB. I'm ...
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1answer
128 views

lighttpd can't bind to port: Permission denied

$ sudo service lighttpd start Starting lighttpd: 2016-02-29 09:51:24: (network.c.410) can't bind to port: 88 Permission denied [FAILED] ...
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52 views

Edit/Remove Places + Submenus from Top Panel Gnome

How do I remove "Connect to server" from "Places" Menu in gnome top Panel for all users or remove "Places" Menu itself for all users ? Remove/Hide Connect to server " I want to restrict users from ...
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15 views

my git details & connecting via eclipse

I installed git on a CentOS machine. I initiated the git on the server on /var/git/.git/. My question is: how do I connect to the git via eclipse and adding files, and what should be my connection ...
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1answer
15 views

No 'Makefile' created KAMENSKY/Text-Bidi-2.11.tar.gz

I am trying to install following perl module via cpan on centos 6.x but unfortunately getting error. Please advise to solve. Text::Bidi Version: 0.03 Usage: Label batch PDF CPAN /usr/bin/cpan ...
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0answers
37 views

can i restore/ repair dev, proc & sys? elastix on asterisk (Centos)

well my hard disk started to get bad sectors and began to fail.. so i had to take a image, tried the clonezilla. every thing was alight till i restarted y machine and then kernal panic! & the ...
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1answer
77 views

How to manage my firewall with new Centos's utilities?

I just installed a Centos7 distribution on my server. I came from Centos6, and I read that iptables utility has been replaced by firewalld and services utility by systemctl. So I try to get my ...
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1answer
357 views

Unable to connect to mongodb running in virtualbox (host: Mac OS, guest: CentOS)

I am using CentOS 7 in a virtualmachine running on Mac OS X using Virtualbox. Unfortunately I am not able to connect to the VM's database from my Mac OS host. I am using NAT as network for the VM and ...
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1answer
112 views

how to resolve libx265 dependency issue on CentOS7?

I'm trying to run a # yum update On my system and I'm getting the following message: --> Finished Dependency Resolution Error: Package: ffmpeg-libs-2.6.5-1.el7.nux.x86_64 (@nux-dextop) ...
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30 views

How to configure Kile to work with secondary texlive install in Centos 7?

I've done a clean installation of Centos 7. It is critical that old my latex projects should compile and I want to use Kile (KDE's latex text editor and environment). However the first thing I found ...
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1answer
48 views

unable to boot into centos 6.7 after suspending the system

I suspended the cent os workstation when I restart it is unable to load the OS and I am always displayed with boot option menu like upgrade or install memory test etc result of pvscan : could not ...
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10 views

Apache config related issue

I'm trying to harden my apache installation, and so deny access from apache to my root directory, but i'm kind of confused, because in the config it already says, that it's denying access to the root ...
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67 views

How to find bottleneck in mysqlcluster and apache/php server?

I have setup a mysql cluster 7.3.x with 2 Datanodes,2 SQL nodes and 1 Management Node in a LXD/LXC centos 6.7 containers and a separate Apache 2.2.x/PHP-5.5 web server. The website currently serves a ...
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2answers
121 views

PhantomJS No Such File or Directory on CentOS

I am trying to run PhantomJS on CentOS. I have used this page as a primer for installing it. HOWEVER, when I go to run the version command, I get command not found. I have verified that the file ...
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10 views

Packet is getting dropped even though iptables rule allows forwarding

I configured the following on CentOS to enable IP forwarding but limit to specific IP range(destination): iptables -D FORWARD -i eth0 -j ACCEPT #delete default ACCEPT rule iptables -P FORWARD ...
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20 views

Centos vmware loses network on resume—how to re

I am using the Cloudera Quickstart VM 5.5, which is based on Centos 6.4. I have it running on VMWare Fusion version 8.1.0 (current version) on a Mac running MacOS 10.11.3. The VM is configured to use ...
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1answer
17 views

Static IP using Bash vs Router Interface

What is the "proper" way to assign my CentOS 7 Virtual Machine a static IP? I assigned my Host system (Windows 8) a static IP through the router's administration interface, but every tutorial online ...
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1answer
26 views

Cannot figure out what eats disk space, CentOS6

Here is disk free info: root@nqpc002/]# df -ha Filesystem Size Used Avail Use% Mounted on /dev/sda2 103G 85G 13G 87% / proc 0 0 0 - /proc sysfs ...
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2answers
48 views

Ping between two Linux systems via an intermediate Linux fails

I have a simple network with three Linux systems running CentOS 2.6. Linux 1 (eth1: 192.138.14.1/24) | | (eth4: 192.138.14.4/24) Linux 2 (eth2: 192.138.4.3/24) ...
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1answer
498 views

CentOS 7 Linux resize filesystem after partition resize

I am running CentOS 7 on a HyperV virtual server. I recently increased the size of the hard disk from 32GB to 64GB and used GParted Live to extend the partition, which seems to have worked as shown ...
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192 views

OCI8 extension not loading in PHP 5.4, CentOS 7

I have a CentOS environment running as a VM guest. It runs and Oracle 12.1 Database, along with PHP 5.4.16, on Apache 2.0. I've gone through the installation steps to ensure that the correct OCI ...
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110 views

How do I enable hyperthreading on CentOS 6?

How do I enable hyperthreading on CentOS 6? I checked the flags field in /proc/cpuinfo and ht is in the flags section. Below is my processor information. ~$ lscpu Architecture: x86_64 ...
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1answer
99 views

How can I prevent that an user sends mail like another user on Postfix?

I am running a Mail Server on CentOS 7. All programs and system are up to date. My Mail Transfer Agent is Postfix, and it uses Dovecot SASL to authenticate the users. In Postfix's configuration, my ...
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1answer
20 views

Centos freezes, when trying to open crontab

I'm trying to open crontab, but when i type it the whole os just freezes... I thought, maybe that's because vim isn't installed, but it is. I also checked the cron.allow and cron.deny files, but they ...
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17 views

Xen hypervisor setup | Enthusiast | Access VM on host | Sugesstions

Planning to use Xen in a small project to learn about virtualisation, and have selected CentOS as host (previous attempts with Debian failed). Would be installing Xen on a Laptop (ASUS X550LD). Is it ...
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1answer
24 views

Centos fstab how to know what filesystem to put

i have installed centos with default settings, and i'd like to partition my server securely by modifying fstab. Thing is i don't know which filesystem i should put in the fstab file to reference eg. /...
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66 views

CentOS - Postfix rejects incoming mails

I have VPS with Centos 6 with Postfix, Exim and Dovecot. When I try to send mail from GMail to mail account from my server I receive following error in /var/log/maillog: Feb 3 13:36:29 mobilepro ...
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37 views

How to create a custom debian iso file from Windows step-by-step?

I'm using a Windows machine as a personal PC and I would like to know how could I customize a CentOS 6.7 iso file. In general, what I'd like to have on that specific CentOS is: a .tar archive some ...
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1answer
69 views

Use winexe and powershell to configure some service on a Windows

I'm making a script to configure SNMP on a Windows. This script had to be launched from a Centos OS. I'm quite a zero in Windows scripting so i found a PSscript on the Internet : https://community....
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1answer
38 views

Error when trying to start Centos 7 installer

I am getting an error, when trying to install Centos... I wasn't able to find the log file the installer was talking about, and this is why i was forced to record with my mobile phone... Link to video:...
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98 views

Could not find debuginfo for main pkg: blas-3.2.1-4.el6.x86_64

I'm trying to use gdb with my code, but it's giving me an error: Missing separate debuginfos, use: debuginfo-install blas-3.2.1-4.el6.x86_64 libtool-ltdl-2.2.6-15.5.el6.x86_64 Trying to install the ...
4
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1answer
48 views

During installation of CentOS 7 what to choose for host name

I'm trying to install CentOS 7 server. During the installation what to choose for the host name? Is "server.mydomain.tld" good or do I need to choose only "server"?
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99 views

http://127.0.0.1 returning 401 Unauthorized

I have a CentOS 7 box and have a service running on port 32400 (Plex Media Server) which is trying to pull some information via HTTP to http://127.0.0.1:32400/library/changestamp but a 401 response is ...
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257 views

Centos warewulf cluster with openmpi

I have setup a warewulf cluster on centos 7 and i have installed openmpi-x86_64-1.10.0-10.el7, additionally i also installed mpich. Wen i run mpirun with openmpi it results in the error below, the ...
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1answer
848 views

Installed Python 2.7, but Module in /usr/lib/python2.6/site-packages

I'm running CentOS, it already has Python2.6. I installed Python2.7 and I can see version 2.7 with python -V. I installed demjson module(pip install demjson) and then I try to execute the program. It ...
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1answer
422 views

how to install latest ffmpeg on Centos

I want to install the latest ffmpeg 2.8.5 on the Centos server. Followed this website http://www.mysql-apache-php.com/ffmpeg-install.htm and completed the installation. But the installed ffmpeg is an ...
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1answer
18 views

CentOS 6 - Cpanel/WHM DNS Issues

So for some reason sslpro.xyz wont resolve yet server.sslpro.xyz and ns1/2.sslpro.xyz does. Heres my IntoDNS: intodns . com/sslpro.xyz I have root access to WHM and SSH so please guide me! This is ...
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10 views

CentOS Cpanel - Default CGI Page

I added a few files like index.php etc to /public_html using FileZilla on my VPS but it still shows the Default cgi page. Anyone have any ideas why and how I could fix this?
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1answer
59 views

Fully resetting MySQL

I've just spun up a CentOS 6 server. I installed mysql on it yum install mysql-server And after I started the MySQL service it spat out on STDOUT a bunch of stuff about the necessity of changing ...
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87 views

Disk-less Booting with UEFI mode?

I'm fairly new to this. I was able to successfully disk-less boot in Legacy mode. But trying to see whether I can do the same on UEFI mode; since one of my system has issue on Legacy mode. I see ...