CentOS is an Enterprise-class Linux Distribution derived from Redhat Enterprise Linux sources freely provided to the public.

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OpenStack Cinder: iSCSI login negotiation failure after reboot

I have a Cinder storage and controller node running on the same CentOS 7 box as Nova compute. Everything worked fine, until I rebooted. Now my instances can't mount volumes and I get the errors below. ...
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9 views

Unable to get kickstart file from locally hosted http

I'm trying to get a vm up using a kickstart file. However, whenever the virtual machine initalize, it says it is unable to located the kickstart file from the location provided. Code to build vm: ...
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1answer
24 views

How to install Desktop Environments on CentOS 7?

I have recently installed CentOS 7(Minimal Install without GUI) and now I want to install a GUI environment in it. How can I install Desktop Environments on previously installed CentOS7 without ...
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15 views

Can't Install php-mssql or freetds on Centos7

My goal is to connect to MS SQL Server 2005 using PHP. I have installed PHP and ODBC. I am running CentOS7. PHP Version => 5.4.16 .... (from php -i) .... odbc ODBC Support => enabled I am ...
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1answer
16 views

why my subdomain is not accessible from the Internet?

I am using virtualhost in Centos 6.6. This is my conf file: <VirtualHost *:80> ServerName test.mydomain.ca ServerAlias test.mydomain.ca DocumentRoot ...
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1answer
27 views

'No such file or directory' when I am trying to format Logical Volume

I am trying to create Logical Volume on CentOS 7 on EC2 instance. After attaching the volume I am creating partition using fdisk, then I am starting the Logical Volume creation: pvcreate /dev/xvda1 ...
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15 views

Secure Apache Root on CentOS 7 [on hold]

I'm setting up a new web server on CentOS 7. One of my tasks is securing the server. So I started wtth web root (apache httpd). First by following this tutorial: ...
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1answer
29 views

MySQL service doesn't start

I have a CentOS 6.6, on the system there was a working Mysql and a mysql server already installed and a running mysqld service, but i needed a fresh install, so i did the whole removal through yum, ...
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9 views

/installation of CentOS 7 - Anaconda Disappeared

Using VMWare and CentOS-7.0-1406-x86_64-DVD installer. I would like to install CentOS on this virtual machine. I did that successfully few weeks ago. but now, Anaconda screen disappeared so fast ...
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13 views

Using ks.cfg with virt-install?

I've been trying to get a virtual machine working with a cfg file on centos but unfortunately, I'm getting the error that ks.cfg file does not exist. Below is the command I ran to enable the VM. ...
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2answers
35 views

Apache httpd cannot parse php on CentOS 7

I'm setting up a new CentOS 7 server, I installed apache httpd successfully and get the html welcome page then I installed php 5.4 then tried to test it using test page: <?php phpinfo(); ?> ...
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30 views

Disable viewing/listing rights to users

I'm new to linux administration and I'm not sure how to search for this problem. When I create a new user, s/he can browse the filesystem. E.g. ll /. How can I restrict the user to a few select ...
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1answer
16 views

Sendmail stopped sending mails, “did not issue MAIL/EXPN/VRFY/ETRN during connection to MTA”

All mails suddenly stopped sending, here is the maillog: Jan 26 17:02:20 vm2745 sendmail[3544]: My unqualified host name (Centos) unknown; sleeping for retry Jan 26 17:03:20 vm2745 sendmail[3544]: ...
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1answer
30 views

GNOME license not accepted issue when system has been rebooted

GNOME Desktop has been installed on CentOS7 using sudo yum -y groups install "GNOME Desktop" and when startx is executed the desktop starts. However, when the system reboots the following issue ...
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23 views

Linux home server hung last week - how to determine cause?

I have a lightly used home server (that is, I store back-ups on it, it syncs to CrashPlan, and it runs some media sharing services I use locally - it's not too active). Today I discovered that it was ...
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1answer
35 views

Setting Up New CentOS server - Partitions Sizes and File Systems

I'm responsible for setting up a new CentOS 7 server. It's my first time so I want to make sure I'm on the right track. After some research, I chose to have 6 partitions: Partition | Type | Device ...
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1answer
35 views

lwp-request Fails After Upgrade to Centos 7

I have a bash script that runs well on centos 6, which has an lwp-request in it. I upgraded my system to Centos 7, and the request fails to run: # lwp-request -E https://localhost/admin/startup GET ...
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1answer
15 views

After installing java in linux , where the java will store what home path should i give? [on hold]

After installing java in linux , where the java will store what home path should i give ?
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10 views

receiving openPGP encrypted email in dovecot/postfix.centos 7 [on hold]

All of the emails received by a specific web application will have been encrypted using OpenPGP before they were sent by their remote senders. The app is on a dedicated CentOS 7 server running ...
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1answer
46 views

unix system with malware

I have a CENTOS server that is infected with malware: top shows there's an unknown process that's consuming all the CPUs, if you kill it, it respawns with a different name. what's the best way to ...
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24 views

CentOS/Kernel v3.18/Thunderbolt2

I just got a new SuperMicro box with a AOC-TBT-DSL5320 Thunderbolt2 card pre-installed. I installed CentOS 6.5,ran yum update, and then, because to my understanding at least, thunderbolt support was ...
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9 views

Trouble with VHOSTS config

This is my apache configuration for the vhost. <VirtualHost *:80> ServerName test.mydomain.ca ServerAlias test.mydomain.ca DocumentRoot /var/www/test_mydomain/public_html ...
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1answer
20 views

How to enable Oracle JDK 8 patch upgrades on an existing JDK 8 installation in CentOS

How to enable Oracle JDK 8 patch upgrades on an existing JDK 8 installation in CentOS. Refer details in the original thread ...
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18 views

Unable to configure centos 7 and my UHD display

I am trying to configure cent os 7 in a vm on my laptop with 4k display. The icons and the shell font are very small. I have tried the "gsettings set org.gnome.desktop.interface scaling-factor 2" but ...
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1answer
22 views

What option specified the location of the generated RPM?

I have noticed that, when building rpm files, that most end up in /usr/src/redhat/RPMS/i386 (building 32bit). Some though, incl one we roll in-house, writes the rpm files to ./i386.... so the file ...
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2answers
71 views

php-fpm error unable to bind listening socket for address '127.0.0.1:9003': Permission denied (13)

I've added a config file to /etc/php-fpm.d ; Start a new pool named 'joeri'. ; the variable $pool can we used in any directive and will be replaced by the ; pool name ('joeri' here) [joeri] ; Per ...
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18 views

How to make sure to get the Main/External IP without regard to network device type/name

Hello, I need to make sure I have the external or at least the main IP address for a given machine, regardless to the device type/name. I quickly wrote that tiny script for that purpose, but I need ...
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1answer
24 views

useradd PAM authentication failed

I needed to customize useradd command so i downloaded shadow-utils source package. Using configure-make i was able to compile the source , binary was generated (configure prefix) at custom location ...
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10 views

BIOS and CentOS sending serial messages on bootup

I have a piece of hardware connected to my CentOS workstation via serial. The hardware has to be always on and responding. Recently I realised that on rebooting, my BIOS sends out a serial message. ...
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16 views

CentOS 7 boot hagn in VmWare

I have installed CentOS 7. It was working fine until today that it hangs. After several initial lines of ...driver cache write through... it goes to the next black screen with a _ keeps flashing. I ...
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49 views

yum update fails with HTTP 503, but curl succeeds?

I'm new to CentOS... I've just done a basic installation of CentOS 7. The only thing I've touched so far is the network device to enable it. After confirming internet connectivity, I tried to update ...
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1answer
18 views

How to disable procps-ng 3.3.10 free wide output format?

I'm writing a script that is supposed to simply tell me the amount of free physical memory excluding caches and I noticed that my Fedora system shows a different output format than a CentOS system I ...
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6 views

haproxy - in CentOS is running but the whole directory is no more available and i do not have configuration backup

I had haproxy configured in /var/tmp directory by compiling, i did not had any backup after few months its still running but my /var/tmp/ is having no haproxy anymore. Can anyone please recover it i ...
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18 views

Couldn't open some sites via VPN connection [closed]

I ordered a VPS from BandwagonHost, I installed CentOS 7 x86_64 system and set up a VPN server according to this post. After that, I was able to connect to the VPN server and browse the web. I could ...
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1answer
56 views

CPU idle is high, but processes are struggling to keep up as if the cpu is under heavy load

My centos is barely usable. Often times the terminal becomes totally unresponsive for several seconds, but that may just be lag from ssh, which would be strange because my server is connected to a ...
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2answers
37 views

RPM Says Shared Object Is Missing But I Can Find It With ls

Having a problem installing an openssh rpm I hand-rolled today: [root@local_host ]# rpm -i openssh-6.7p1-1.i386.rpm error: Failed dependencies: libcrypto.so.1.0.0 is needed by ...
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14 views

How to put dracut to initframs?

I try to make SElinux permissive. I changed the config from disabled to permissive. However, I guess it does not recognize that change. In the red hat web site, It says : If the system was ...
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1answer
28 views

Why arent the USB ports working on my install of centOS 5.10?

I have installed centOS 5.10 on a recently purchased desktop computer. The brand is SION, it is a clone. Motherboard: GIGABYTE J1800 (2.41 GHz) When I boot up the machine, this error keeps coming ...
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23 views

Globally change terminal background in centos 7

This has been frustrating me. I've done a ton of googling, can globally change text in terminal using .bashrc, but I cant figure out how to change the white background to black. Going to terminal ...
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1answer
64 views

Automounting NTFS Hard drive in Centos 7

I am using Centos 7. I have a question. I have a NTFS formatted drive which i want to automount when i login. Right now i need to always click on hdd name on my computer windows and entering root ...
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1answer
17 views

How do I disable the creation of the rescue boot image on CentOS?

To make a long story short, my (CentOS 7) server's /boot is too small (100MiB) to hold 2 kernels plus the automatically generated rescue image. I want to avoid the hassle of repartitioning and ...
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1answer
36 views

authenicate OpenSUSE 10.2 client to CentOS 6.6 LDAP server

In our company, we have a network where I installed a working LDAP server for our CentOS 6 servers (FTP/WEB/Pydio/VOD/etc servers) about 25 of them. All working perfectly with LDAP authentication. ...
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3answers
28 views

What should the permissions be for website files?

I've locked down my CentOS web server so root can't SSH in. My website directories, and files are owned by root. So when I upload files, it's a two step process. I upload them with WinSCP to my /home ...
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17 views

AWS EC2: Attach ebs volume fails

I'm using a script that uses Amazon EC2 CLI to create ebs volumes from other instances snapshots & attaches them. The failure happens after creating the volumes - sometimes the attach fails. This ...
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22 views

Cron job running at 12.00 AM despite changing its time

I have only one cron configured in cPanel for WHMCS to run once per day at 12.00 AM. The cron sends daily activity logs to my email. A problem came up recently in which cron job activity logs sent ...
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10 views

Putty not asking for Two Factor Authentication Code

I'm running a CentOS 7 server. So I've installed Two Factor Authentication with Google Authenticator a while back and all was well. However I can't access my server at the moment over SSH. PuTTY and ...
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11 views

Separating SAS from SATA drives

I have to list all SAS drives and separately list all SATA drives, I'm working on CentOS6 and tried lots of commands which will give some specific information about bus of disks. Let me show you ...
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2answers
26 views

How to map a sata device name to a physical sata interface for RAID systems

I have a system with 10 SATA ports, and another SATA as the boot disk. The 10 SATA ports make up 5 software RAID1 arrays. The RAID disks may be removed between boots, and swapped in with arbitrary ...
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1answer
37 views

Install FreeRADIUS - talloc library not found

I'm trying to install the latest FreeRADIUS on CentOS 6.6. I'm getting this error: [...] checking for _talloc in -ltalloc in /opt/lib... no configure: WARNING: talloc library not found. Use ...
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1answer
68 views

ubuntu Kernel panic while installing CentOS 7 in VirtualBox

I have a laptop with Xubuntu desktop 14.10 , and I installed VirtualBox and updated it to the latest version . I'm trying to install CentOS 7 (source downloaded from the official site) as a VM, ...