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

learn more… | top users | synonyms (2)

0
votes
1answer
30 views

Why won't the correct new version of Node.js install on CentOS 7?

Note: This is partially solved, but needs a little more attention. See notes at bottom of OP, and @Digisec's partial answer. I am trying to set up Node.js on CentOS 7, but the following commands ...
1
vote
0answers
5 views

grub can't find CentOS 7

My desktop was tri-booting between Ubuntu 2.04, CentOS 6, and Windows. I installed CentOS 7 in the space that CentOS 6 used, but update-grub doesn't result in the new CentOS showing up. I can only ...
0
votes
0answers
6 views

Centos 7 Gnome, blurry image problems

Sorry for not being very precise, I'm struggling with a problem I fail to identify to be able to find any solution. The image you see above is a screenshot of my problem, every time I need to ...
3
votes
2answers
24k views

What is the default idle timeout for OpenSSH?

I can't seem to find an answer to this simple question, which I need for some compliance documentation. On a default install of CentOS 6.5 (OpenSSH 5.3p1-94.el6), after how long of being idle will ...
1
vote
2answers
6k views

why can't this CentOS 7 server see wifi connections?

I recently installed CentOS 7 as the sole OS on an Acer Aspire T. There is no GUI, as it is a server with a terminal-only interface. What do I need to do to get CentOS 7 to be able to see and list ...
0
votes
0answers
19 views

GRUB2: adding insmod xxxx module in the grub.cfg properly

I want to add my own custom grub2 module, for ex. xxxx.mod into the grub.cfg. How can I do that? For example, here i want to add insmod xxxx.mod below: ### BEGIN /etc/grub.d/10_linux ### menuentry ...
2
votes
3answers
856 views

Does /var/log/secure log successes?

Short one that I've been unable to find a decent answer for. Centos 5.10 server, trying to trawl through all the logs I can to see what IPs successfully accessed the server. I've been mucking about ...
1
vote
1answer
2k views

LFTP mirror includes - including other directories other than what I've included

My question: How can I make sure LFTP only includes files AND directories using --include or --include-glob, and not download a bunch of extra directories from the root of the remote that aren't in ...
1
vote
1answer
1k views

Starting Tomcat Service when starting CentOS/RHEL/Fedora

I want to install tomcat 8 and run it at startup time I am following these tutorials: Install Tomcat 7 on CentOS, RHEL, or Fedora How to install Tomcat 8 on a CentOS 6 VPS I created the tomcat ...
1
vote
0answers
18 views

Monitor mirroring

I need to mirror a remote monitor from a server running CentOS 6.5. With VNC I'm able to connect to the :0 display (that it's the one it is shown on the remote server monitor) but when I change user ...
1
vote
1answer
35 views

Failed to authenticate via ssh.Centos

yesterday I was trying to authenticate via ssh "ssh demo" and return me the following error. ssh: connect to host ip port 7221: Connection refused If you need more information I will provide it ...
0
votes
0answers
28 views

How to copy from putty and paste in another program

I'm using putty in Centos in order to connect to another Centos server. The copy/paste functions of putty in Centos is weird! I tried to select text to copy text and right click to paste it. The copy ...
1
vote
2answers
3k views

Installing Dovecot and Exim on CentOS 6.4

I've been looking for some guides on setting up a secure dovecot and exim mail server setup on CentOS 6.4, however it seems there's nothing out there. Does anyone know of any guides - or - if someone ...
1
vote
1answer
13 views

RPM dependency conflict between libX11 and libxcb

I have to install some packages for a vnc server on a CentOS 6.5 machine that has no access to repos (so I have to transfer the rpm packages I need using sftp). As I tried to install the package ...
0
votes
1answer
9 views

How to make KDE menu (in CentOS) take new .desktop file into account?

My program's installer creates .desktop files into ~/Desktop and ~/.local/share/applications. In most Linuxes this is enough to create respective menu item and desktop icon. In CentOS 7 with KDE, the ...
0
votes
2answers
239 views

Install libjpeg.so.8 to CentOS 6.6

I need install libjpeg.so.8 to CentOS 6.6 but i do not understand how to do... I have installed libjpeg-turbo libjpeg-turbo-devel but libjpeg.so.8 there is not
0
votes
0answers
16 views

'syntax error' at token '' on line 6:

I'm quite new to Linux and I need to build a local policy SElinux module. I'm compiling with audit2allow from a file containing the following lines : module lockx11vnc 1.1; require { class ...
0
votes
1answer
17 views

CentOS 6, having hard time with yum, repos and installing packages

I'm having some hard time with yum and hoped to get some help. My end goal is to install the pymssql library for Python. It fails because it needs freetds install. yum install freetds fails with ...
2
votes
1answer
32 views

Found Duplicate PV in LVM disk scan

I have a VPS, and I attached another hard disk to it. It contains the same partitions I have on my current disk; it has / and /boot and swap. I need all data on the / partition. Here is the output of ...
2
votes
1answer
4k views

Unable to use yum repos whether with baseurl or mirrorlist in CentOS 6.5

Since a couple of days, I'm unable to retrieve repositories data with Yum, in my CentOS 6.5 server. I did yum clean all a dozen of times, it emptied all but didn't solved the problem. I tried to ...
0
votes
1answer
3k views

CentOS 7 won't serve static https content, why not?

I just re-installed httpd and created a static index.html file. I have firewalld configured to allow internet access to the https service. But when I type https://my.server.ip in a web browser, the ...
31
votes
6answers
56k views

How To Install Virtualbox Guest Additions On CentOS via Command Line only

Reading the Virtualbox user manual, I finally got [here], which explains how to install Virtualbox Guest Additions on a Linux guest via Command Line. But it's not clear enough for me (I just started ...
0
votes
4answers
411 views

Unable to access iSCSI target since Targetcli has been updated on Centos 7

Targetcli is able to run [root@controller ~]# targetcli targetcli shell version 2.1.fb34 Copyright 2011-2013 by Datera, Inc and others. For help on commands, type 'help'. /> exit Global pref ...
-1
votes
1answer
33 views

CentOS 7 Full Partition Size Not Available [on hold]

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 ...
0
votes
2answers
2k views

Why can't I access to my ftp server with my local user account?

First of all I'm using Centos 6 server, putty and wordpress.org I followed the instructions from this link to set up vsftpd and ftp in centos server. For the vsftpd.conf file, these were the changes ...
0
votes
1answer
1k views

Installing CentOS from USB results in black screen

I have an old Dell Latitude laptop (running xp) that I'm trying to turn into a test server running CentOS. It doesn't have a cd drive on it, so I'm forced to use a flash drive to try and get the new ...
0
votes
0answers
14 views

Issues with wireless

I am using CentOS7. I have two computers (www.fit-pc.com/web/products/fitlet/fitlet-t/). I am using NetworkManager and both devices are able to ping each other as well as the gateway. The problem is ...
0
votes
1answer
2k views

What variables are valid within /etc/default/useradd file?

My /etc/default/useradd file is as follow: # useradd defaults file GROUP=100 HOME=/home INACTIVE=-1 EXPIRE= SHELL=/bin/bash SKEL=/etc/skel CREATE_MAIL_SPOOL=yes man page for useradd provides many ...
0
votes
1answer
27 views

Exceeding memory issues on server using PHP

PHP has memory limits set at a global level in the PHP.ini file. I also know that they can be configured at the local level. Our memory limit for a query is set to 132MB, but we keeping getting ...
8
votes
3answers
13k views

What does eno mean in network interface name 'eno16777736' for CentOS 7 or RHEL 7?

Under consistent network device naming scheme, what does 'eno' stand for in network interface name 'eno16777736' for CentOS 7 or RHEL 7?
1
vote
0answers
34 views

mount: special device /dev/sda1 does not exist

I had a CentOS 6 server suddenly lock up on me after doing about 2 weeks of calculations for a project. Upon reboot, the machine would crash while attempting to mount the devices listed in the fstab ...
-1
votes
0answers
26 views

Need help getting GitLab to work on CentOS 7.2 [on hold]

I've got GitLab installed from the script on CentOS 7.2. I have apache setup with it. I'm not using nginx. I'm not sure why the web interface isn't working. Here is my config for gitlab and ...
0
votes
0answers
15 views

CentOS 7 grub option is missing after upgrading windows 8 to 10

My system was dual booted with CentOS 7 and Windows 8. After I reinstalled the latest Windows 10 Pro and removed windows 8, my system is only booting with Windows 10 as the Grub2 is not appearing at ...
0
votes
1answer
5k views

How can I see settings of the email server?

I have root access to a Linux server (CentOS 5.10). I want to see the email server's settings such as whether SMPT is working, wheter there is an email server, port number, does it require SSL, what ...
1
vote
1answer
22 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 ...
2
votes
3answers
1k views

installing eric5 in CentOS 6.4

I am trying to install Eric Python IDE 5 in my CentOS 6.4. The problem here is even I have installed PyQT4 its again saying that module is missing. what I am supposed to do ? here is the terminal log ...
-1
votes
3answers
123 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 ...
1
vote
1answer
17 views

Create Shortcut to VMware

How would I create a shortcut to VMWare player on CentOS 7 desktop? A lot of people say it's not possible to create shortcuts on Gnome 3, I have seen it working with a special file, but i'm not sure ...
1
vote
2answers
889 views

install opencv-2.4-9 on centos 6.5 with cuda 5.5 support

I can't seem to install opencv 2.4.9 on centos 6.5 with cuda 5.5 support. This is my cmake output: [root@cadejos-0 opencv]# cmake -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/opt/opencv -D ...
1
vote
1answer
25 views

How to remove password prompt when executing su <user> command in CentOS 7?

I have two users in my CentOS system User1 and User2. I am logged in as root user and trying to add User1 to sudoer list using visudo. I have entered the following line at the end of the file User1 ...
0
votes
0answers
29 views

CentOS 7 i386 Netinstall error: 'Error setting up base repository"

I downloaded the 32-bit CentOS 7 Netinstall version from http://mirror.centos.org/altarch/7/isos/i386/, and used the http://mirror.centos.org/altarch/7/os/i386/ as the repository during installation ...
1
vote
0answers
33 views

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 ...
0
votes
0answers
15 views

Firewalld / iptables on CentOS 7 - ports are not really being opened after recent update

My problem is that after a recent update I can no longer open any port. I have tried disabling firewalld and opening using just iptables. Ports are being "opened" as on the list that I have from ...
0
votes
1answer
19 views

“ Cannot find a valid baseurl for repo: base/7/x86_64” on “yum update all”

I am using Centos 7.1.1503 (core) as a VM. The host OS is Windows 10. I have created this VM, so this is a fresh installation of CentOS. My laptop has direct connection to the internet (no proxy) ...
1
vote
3answers
3k views

Install mplayer on Centos 7

I've been trying for several days to install mplayer on Centos 7 without success, I've install many repos but nothing works, I've always the following error: -> Resolve Dependencies completed ...
2
votes
1answer
2k views

Bridge does not get IP via DHCP at boot

I'm running CentOS 7. I'm not running NetworkManager, and I've actually uninstalled it. My system is supposed to acquire an IPv4 address via DHCP on br0 at boot. Howver, when I log in, it has no ...
3
votes
2answers
71 views

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 ...
2
votes
1answer
721 views

Ccan't connect to Samba drive in CentOS 6.3

#smbclient //ballzdeep/torrents Server not using user level security and no password supplied tree connect failed: NT_STATUS_BAD_NETWORK_NAME Does this mean I need to require username and password ...
0
votes
0answers
81 views

CentOS 7 blurry, fuzzy screen

I just installed CentOS 7 to Dell Optiplex 780 and I have problem with display. I am using two screens and they are quite blurry, fuzzy. You can see the problem (look at the terminal) - ...
0
votes
1answer
7k views

How can I extend VMware Partition on Centos 7 using GParted?

I've a problem with increasing a partition from 20GB to 120GB, VMDK file. Here is what I've done: using vmware-diskmanager to increase vmdk file from 20 GB - 120 GB. It's ok. download and boot from ...