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

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Build CentOS RPM for current git release, unsuccessful rebuild with alternate prefix

I am stuck in an effort to provide an maintain an up-to-date git release for a collection of CentOS Linux servers. I was hoping to be able to create binary RPMs that I could just have published to a ...
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1answer
24 views

Set Document Root for site?

Apologies up front for the silly noob question .... I have a CentoOS 6.7 server set up with Apache. I can confirm it is working correctly - say the machine's IP is 123.456.789.123, I can navigate to ...
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1answer
28 views

MySQL Access Denied (CentOS)

I have installed fresh MySQL server on CentOS, and started the MySQL server service with command. # /sbin/service mysqld start I checked the service and it is running. Currently I am logged in as ...
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CentOS 7 grub option is missing after upgrading windows 8 to 10

My system was dual booted with CentOS 7 and Windows 8, after upgrading from Windows 8 to latest Windows 10 progrub is over written by Windows MBR. How do I reinstall grub on my system.
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CentOS, Vhosts.conf missing? [on hold]

So I've created 5 pages on CentOS machine, I configured the Httpd.conf and vhosts.conf and everything works like a charm. Now after 3 months I log in and I can not find the vhosts.conf file ...
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2answers
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How to update Linux servers?

I am planning to update a bunch of servers. Currently, I get an email every month, on the updates that are available per servers. I don't want to check ~100 updates per server, is there a way to ...
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0answers
29 views

CentOS is not booting up [on hold]

I am using CentOS in a system which we can't connect to monitor. I edited the interface configuration files in /etc/sysconfig/network-scripts and used the command service network restart, the system ...
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1answer
16 views

Error starting Eclipse on Centos 6 (JVM terminated. Exit code=13)

After extract eclipse-jee-mars-1-linux-gtk.tar.gz and running eclipse I am getting following error. I have installed Oracle JDK. What would be the error and solution ? Java version [root@hithertech ...
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23 views

Job queueing on a single machine

I have a shiny new server for running simulations on, with a pair of Tesla GPUs and 32 cores, running CentOS 7.2. I'd like for multiple users to be able to submit jobs to the server that get queued up ...
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13 views

journalctl process eating up memory

I have a process run by root journalctl -b --system showing up on htop that is eating a ton of CPU. I understand journalctl is for querying the journal, so is it safe to kill the job without impact on ...
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1answer
24 views

I have no local IP on my CentOS 7.1 dedicated server

problem I've installed net tools and whenever I run ifconfig -a I come up with 2 network interfaces. Here is an example. [root@81756 /]# ifconfig -a eno1: ...
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3answers
38 views

How to change the Home directory of the currently logged In user

I am currently logged in into a CentOS server and I would like to change my home directory from /home/myuserName/ to /var/www/html/ I tried the below command : > sudo usermod -d /var/www/html ...
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1answer
12 views

Booting CentOS from live usb on OSX El Capitan

I have been trying to set up a live usb to use to study for the RHCSA/RHCE certification. CentOS launches and gives me the launch page I choose the standard option, I have not tried text mode etc. ...
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1answer
12 views

Can I move 0yum-cron from cron.daily to montly?

I installed the yum-cron package, configured too only check for updates and then mail me. But, doing this daily, seems a bit too much. I would like to do this monthly. The file is located in ...
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3answers
41 views

How can I do “yum upgrade” on an offline CentOS7 server?

I have a CentOS7 machine that is protected by firewall, I can only connect via ssh outside. I want to do yum upgrade on that server to upgrade the package. How can I do that? (we haven't got ...
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28 views

Is there a way to use epel and local yum together

I am using RHEL7. If I do a fresh install of RHEL7(with connected internet) and then installing epel rpm. All the packages are getting installed after that. But then few packages have dependencies ...
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1answer
20 views

Can't install man pages on minimal Centos Docker container

I have a minimal Centos 7 Docker image, and I'm trying to get some man pages on it to help in debugging my Dockerfile. Out of the box, it doesn't have much: # man ls No manual entry for ls Per this ...
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13 views

Unable to upgrade PHP 5.3.3 to 5.6 on centOS 6.3

I got a problem with upgrading PHP 5.3.3 to 5.6 on linux centOS 6.3. I've already search it on the net and got answers including here (Since it's a classic problem), but still not able to solve it. I ...
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1answer
23 views

Errno 5 Input/output error when running yum check-update

I tried to update a server over SSH, but when I ran yum check-update I got an error: [error 5] Input/output error I think this means the RPM libraries may be damaged or corrupt, but I'm not sure ...
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21 views

Installing Xfce4.12 on CentOS

My lab computer has been upgraded to a fresh install of CentOS7 during the weekend. So far so good. I would like to use Xfce over the default Gnome shell. I have super user access on the machine but I ...
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0answers
22 views

Create my own centos distro

I tried to create my custom CentOS (like vicidialnow) but I have not succeed to configure my new distro to run automatically some scripts to configure the server after installation is finished and to ...
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1answer
15 views

Add shared module to apache CentOS7

I have practiced with my apache 2.4.6 on CentOS7 and I have tried to add shared module. I can list my compiled modules using this command httpd -l. All shared modules is located in /etc/httpd/modules. ...
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1answer
40 views

ssh Connection reset by 192.168.x.x

I'm trying to ssh login from Mac OSX 10.10 into CentOS 7.1 on boot2docker by using public key authentication. The problem is that ssh shows Connection reset by 192.168.99.100 when I login to CentOs ...
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3answers
35 views

How to install Nginx while Apache running?

I am trying to install nginx as a backend proxy for Apache and I get this errors: === Install Nginx from official repositories === Loaded plugins: fastestmirror, remove-with-leaves, tsflags, ...
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1answer
12 views

Does CentOS 6 have a kernel-module-extra equivalent?

I am attempting to activate and use my TPM module, but all online instructions suggest I install kernel-modules-extras package. The problem is, I cannot find this package type for CentOS 6. Is this ...
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1answer
8 views

agetty dumb terminal option

I'm trying to set up a CentOS distro to output on a serial console. I went through all the steps described on this page . My question concerns the agetty command: exec /sbin/agetty ttyS1 19200 ...
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19 views

I cant find preference in centos 7

I just installed centos 7 and the desktop is missing the preferences section how can i add preferences to my desktop?
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32 views

Different ways to use my cloud virtual machine lead to different interface languages

I use qcloud(a cloud service in China) to run a CentOS 7. In the qlcoud webpage panel, I can use the vnc way to check out my machine. In my own Mac, I can use the ssh to log into my machine. ...
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3answers
107 views

How to increase disk space in root?

So I check on my server using df -h and my centos-root is at 99% capacity. Just a few days ago, the root is at 87%. For some reason, it increases so quick. Is there any suggestions on how to reduce ...
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32 views

How does Grub Stage1, exactly, access/load stage 2? [duplicate]

This is my first ever question, I have put this question in front of Red Hat Instructors but didn't find any satisfying answers. I'm using RHEL/CENTOS6, GRUB Legacy 0.97, and have consulted heaps of ...
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2answers
32 views

Disable and Enable modules in apache CentOS7

My goal is to optimize my apache server. At first I want to disable some modules on it. I was surfing over the Internet and didn't find anything dedicated to apache which is installed on CentOS7. Here ...
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1answer
30 views

Updating extensions after PHP upgrade on CentOS 5.6

I'm completely new to pecl, yum, rpm, packages and all the stuff required to get this done, so I'm hoping some of you smarter more experienced people can help me out. I only have a vague notion of ...
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1answer
20 views

apache Virtual Host Configuration CentOS7

My host machine is Windows 7 and guest machine is CentOS 7. I am a new to Apache and I am trying to create VirtualHost on CentOS7. I have read a lot of documentation and a lot of answers over ...
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1answer
35 views

How do I set up passwordless authentication with non-root users?

Using two CentOS 7 servers, I set up passwordless authentication with root users. It works fine. I tried to use the same method (with .pub and authorized_key files) with other local users. But these ...
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1answer
16 views

SELinux is not logging anywhere

I have SELinux in permissive mode enabled on CentOS7 system. But it doesn't seem to produce any logs. No new files in /var/log/audit, grep -i selinux /var/log/messages* finds nothing. sestatus ...
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19 views

Will exiting SSH session cancel CP? [duplicate]

I have SSHed onto a CentOS server and initiated a CP from one directory on the server, to another directory on the server. If I exit my session, will the CP cancel? If so, is there a way to exit the ...
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24 views

Cannot connect to any host (including localhost) using PAC Manager on CentOS 7

I'm using following system: [alexus@wcmisdlin02 Desktop]$ cat /etc/redhat-release CentOS Linux release 7.2.1511 (Core) [alexus@wcmisdlin02 Desktop]$ uname -a Linux wcmisdlin02.uftmasterad.org ...
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1answer
40 views

My “yum update” is not working

I am having problem with "yum update" This is the output: [root@localhost yum.repos.d]# yum update Loaded plugins: fastestmirror, refresh-packagekit, security Setting up Update Process Loading mirror ...
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1answer
35 views

how can I build Radeon proprietary drivers for CentOS 7?

So, I am running CentOS 7 on my laptop and all seems almost OK. Now I'm trying to install the video card driver. # lspci -nn ... 01:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. ...
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1answer
36 views

Why can't my servers talk to each other over direct ethernet connection?

I have two servers running RHEL 7.2. Each have 2 NICs. One NIC talks to a switch, and other is a direct connection between the two servers. One of the servers will be an NFS server, and the second ...
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5answers
83 views

Mass IP Blocking

I have a game server and someone is spamming it with bots. The SpamBot client makes the handshake with my server using UDP connections. It does this through a list o proxies. Basically, the Spambot ...
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0answers
37 views

Can using chcon to essentially bypass selinux be less secure than setting selinux to permissive?

I was wondering if it is possible to make a CentOS 7 server less secure by using chcon than it would be if SELinux were in Permissive mode. I am essentially trying to set up Phusion Passenger with ...
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2answers
45 views

No space on the boot disk to update kernel

I have installed centos 7 on vmware and seem to have ran out of space on the boot drive. Is there a way to add more space without formatting the disk? [root@centos7 /]# df -h /dev/sda1 Filesystem ...
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2answers
26 views

$USER environment variable not changed to root

The USER env variable is unchanged after gaining root access. [user1@comp]$ echo $USER user1 Logged in the system as 'user1'. Now check the output after gaining root access. [user1@comp]$ su ...
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1answer
47 views

How can I create an LVM volume group spanning 2 hard drives? [closed]

I have rented a dedicated server with two 500gb hardisks running Centos 6. On this server there are 4 partitions: 1.boot 2.root 50gb 3.swap 50gb4. 4.empty 400gb Now I want to create a logical ...
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1answer
26 views

What is the different between qcow2 format vs img format?

I want to back up a virtual machine image when I went to the directory where the images are stored /var/lib/libvirt/images/ I found one .img file, the rest were .qcow2, unlucky the virtual machine I ...
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26 views

How do I install and configure NTP on CentOS 7 from source? (include/ntp_crypt.h errors)

I unpacked the .tar.gz file for the newest NTP. I installed the gcc compiler and libcap devel. I ran the ./configure command with various flags and options. I ran make check and found an error. The ...
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23 views

What is the equivalent to this apt-get when installing PostgreSQL extension for acoustid?

On bitbucket, it says to install the extension using sudo apt-get install postgresql-9.X-acoustid. but I'm running on CentOS... when I replace apt-get with yum: $ sudo apt-get install ...
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1answer
16 views

No entries for Ubuntu after executing update-grub on CentOS

My server is running Ubuntu 12.04 LTS from /dev/sda3 (ext4). I experimented with CentOS 7 some time ago and that is on /dev/sda2 (xfs) and its grub is used for booting. It showed only the latest ...
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1answer
25 views

Can I run 1 install on different PCs?

As the title says can I run 1 install of CentOS on different PCs with different specs from a USB install? Thanks