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

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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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383 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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146 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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23 views

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

After installing java in linux , where the java will store what home path should i give ?
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1answer
74 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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111 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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11 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
37 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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92 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
28 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
1k 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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30 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
107 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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0answers
24 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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98 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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1answer
137 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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37 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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1answer
671 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
106 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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1answer
77 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
84 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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281 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
1k 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
180 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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101 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
69 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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48 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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62 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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1answer
82 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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47 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
282 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
742 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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289 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, ...
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1answer
519 views

Big trouble : rpm empty db, install V3 RSA/SHA1 Signature, key BAD, YumRepo Error

I'm little tired because I have spent hours solving problems, and can't find a solution on Centos 6.6. I have many troubles: rpm db is empty: try googling, find restore process, but always empty ...
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3answers
991 views

How to install thunderbird 31.4 on centos7

I'm trying to install the thunderbird 31.4 on centos7. What I done: Downloaded from that link: Thunderbird Page tar -xvjf ..... cd thunderbird; ./thunderbird The error: bash: ./thunderbird: ...
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1answer
49 views

How can I have a bridge that uses DHCP?

I have set up a linux box (centos 7) to use for virtualizing some servers. I have set up a bridge, but I need to do it with DHCP, but it doesn't seem to like it. The reason I need DHCP is because ...
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2answers
72 views

Why does CentOS notifies me “Login with home=/” althought home directory is created already?

Let me clarify my question. I have a CentOS 6 virtual machine, with /home directory mounted on a logical volume (formed by 2 virtual HDDs). I used this command to create a new user named user03 ...
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1answer
134 views

Cannot update new kernel for CentOS 7 although the server have space enough

I try to update kernel on my CentOS 7 but the yum say there is no space enough on /boot although /boot have 343 MB as show below: Filesystem Size Used Avail Use% Mounted on /dev/sda2 477M 105M 343M ...
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2answers
3k views

how to install kdm on CentOS 7

I installed CentOS 7, first I installed group "KDE Plasma Workspace", then I installed "GNOME Desktop", after that, I found only gdm existed. and which kdm returns nothing, yum provides kdm only ...
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45 views

CentOS server to be used to internally issues

I have a CentOS 6 server here in our IT dept. and I want to install Nagios on it for some more network and enterprise insight. It has a internal IP that matches the network scheme as well as a ...
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2answers
250 views

Get current timezone on Centos 7

On previous version of centos , i used the following command to get the current timezone in my bash script timezone=$(sed 's/ZONE=//g' /etc/sysconfig/clock) Output is "America/New_York" How can i ...
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2answers
43 views

Common user to modify files owned by 'other' users

I would like to understand how to use the permission system in CentOS to achieve the following: The system has the following users: user1 user2 user3 And the following directory structure.. ...
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69 views

kvm console not working at login [centos on centos]

When I run the following $su $virsh console myvm I keep getting login incorrect , even though I'm typing the correct password. In fact, it does work if I use virt-viewer. What could it be?
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59 views

Why I am getting this dependency error?

I try to install Shibboleth service provider to Centos 7. However, I get this error: Error: Package: shibboleth-2.5.3-1.1.x86_64 (security_shibboleth) Requires: ...
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166 views

Apache2 'Server' header reports wrong openSSL version

Does anyone know where the Apache 'Server' header pulls the openSSL version from (file location/directory)? I am expecting openssl-1.0.1j but apache is reporting openssl-1.0.1g (system's openssl ...
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2answers
177 views

Creating and mounting a new file system on CentOS

On my CentOS machine I have to create a new partition/file system, not sure which one I need to be honest I am a little bit confused about it all. If someone could explain it and walk me through it ...
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168 views

OVH with cPanel - Server boot failure - plymouth not found, no loopback

I have a problem with a server of mine. After initializing a reboot through OVH Manager, the server won't reboot. Only rescue-pro mode is working. Server admins on their side told me "the server gets ...
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2answers
1k views

Is it good to have multiple version of Linux Kernel?

Once, I was installing some kernel patches & something went wrong on a live server where we had hundreds of clients. Only one kernel was there in the system. So, the server was down for some time, ...
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1answer
912 views

use different java version to run two programs

I installed two JAVA JREs on my new CentOS since Cassandra needs java7u25 or later while iReport needs to work with 1.6. Now how do I launch each program from command line telling each program which ...
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1answer
1k views

Centos 6.6 can't install couchdb from EPEL repository

the issue is about unavailability of couchdb package in EPEL. Has somebody faces the same issue? yum repolist gets Loaded plugins: fastestmirror, priorities Loading mirror speeds from cached ...