Questions specific to the CentOS Linux distribution. Use this tag if your question relates to how the CentOS distribution affects your problem; do not use it if you just happen to be using CentOS and your question is about a specific configuration detail or syntax.

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1
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1answer
550 views

httpd 2.4.6 on CentOS 7 - question related to module config in httpd.conf

I am sorry to post this type of question here but due to the great experience and skillsets here, I hope for your understanding. I am using (unfortunately) httpd package (v 2.4.6). In various guides, ...
0
votes
3answers
822 views

Check installed grub2 modules

I run CentOS 7. Is there a way (e.g., a command) to check which grub2 modules are currently installed?
0
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1answer
471 views

Installed PHP extensions to wrong PHP version

I just bought a VPS and it came with PHP5.3.3 and that wasn't good for our website, so I successfully (so it seemed, anyway) installed PHP5.6.7 and successfully registered it with Plesk. For the ...
1
vote
1answer
179 views

CentOS 6 Static IP Address

I've just assigned my CentOS machine with a static IP address using the /etc/sysconfig/network-scripts/ifcfg-eth0 which has the following lines and seems to be working #eth0 config DEVICE="eth0" ...
0
votes
0answers
244 views

Cannot mount LVM partition after restoring LVM metadata

I have resized two LVM partition (/var and /home) and somehow resize process went wrong. After reboot system wasn't able to mount /var and /home. I have used RIPLinux to check if I can mount those ...
0
votes
2answers
1k views

Centos 7 - Trying to install postgresql (from postgresql.org)

I am trying to install Socorro service on fresh Centos 7 (installed on Amazon ec2). I am following the instructions from the official documentation - Socorro. I installed the PostgreSQL 9.3 RPM ...
0
votes
0answers
99 views

How do I show that a Desktop environment is NOT installed?

I need to document that a server is running a minimal installation of CentOS. I'm aware that I can echo $DESKTOP_SESSION (returns blank), but is there a better way of showing that the OS is minimal ...
0
votes
1answer
311 views

VPS: How to forward traffic to devices from public IP

My goal is to set up a public IP for a Android Smartphone which is running an "IP Cam" software - the interface can be accessed in local network on (example) 192.168.0.2:8080 - But it has no public IP ...
0
votes
1answer
182 views

Nginx File 404 when trying to launch drupal install.php

I am getting a 404 when trying to access the install.php for drupal on nginx. Below are my /etc/nginx/nginx.conf and /etc/nginx/conf.d/default.conf files. the nginx user and group own the ...
0
votes
1answer
180 views

mount times out with iptables --policy OUTPUT DROP

I previously ACCEPTed all output traffic by default. Recently changed the policy to DENY output by default, only opening ports needed for server/application functionality. When I tried to mount a ...
1
vote
1answer
290 views

How to create permanent ip alias belonging to different subnets in Centos

I followed this link and created few alias ips on my centos 6.5 machine but all these ips belong to same subnet. What I have: My machine: eth0, 10.91.56.3 IP Alias1:eth0:1, 10.91.56.4 IP ...
3
votes
1answer
542 views

Resize MDADM/Software RAID underlying partition and filesystem

I am running out of space on my root partition and would like to steal some from a different partition. The drives are 2x120GB with mdadm software RAID. I am using CentOS 6.5 64-bit. I used the centos ...
0
votes
1answer
207 views

What does the “-y” do in “yum -y groupinstall gnome”?

I've been googling and reading tutorials, but while the authors go into detail with all the things you can do with yum, no one ever mentions what the -y flag is for. I'm trying to automate this with ...
3
votes
1answer
3k views

Policy in /etc/pam.d/password-auth is not being enforced

I've updated login.defs and password-auth to include a minimum length on passwords (12), but the minlen is not being enforced when I attempt to change a user's password with passwd. None of the ...
0
votes
0answers
209 views

CentOS limits.conf & cpulimit not working

I have a CentOS server I am testing things out on. In it, I have configured USERNAME hard maxlogins 4 USERNAME hard cpu 1 USERNAME hard nproc 10 in ...
1
vote
1answer
284 views

Configure systemd-journal-gateway on CentOS7

I installed systemd-journal-gatewayd on CentOS7 and started it. If I connect to the given port the HTTP server is answering but the response is always emtpy. Neither /entries?follow nor /entries?boot ...
0
votes
2answers
596 views

Yum Broke For some reason

i am trying to install Mysql Client i am getting this annoying message. I am still unable to find the proper answer. [root@localhost Downloads]# yum install mysql-bench There was a problem importing ...
2
votes
0answers
196 views

Why does my USB modem produce multiple /dev/ttyUSB* files?

I have a single Sierra Wireless USB 308 modem we are using for sending SMS message to, and receiving SMS messages from, customers. When this single device is plugged in, the system creates multiple ...
1
vote
1answer
626 views

How do I troubleshoot these SELinux AVC errors?

Background: I have a CentOS 6 LAMP server. Recently the server has started to become unresponsive every few days. Originally, mysqld would throw a nagios alert and I would be unable to even ssh into ...
1
vote
2answers
4k views

Append DNS suffixes to /etc/resolv.conf

Is it possible, and how do I configure CentOS 6.6 so that /etc/resolv.conf will obtain its configuration via DHCP, but will also have additional domain names added to the search line? Bonus points if ...
0
votes
0answers
69 views

Repackage RPM with kernel

I am tinkering with CentOS 5.4 and upgrading the kernel to the latest 2.6.18 build 402. What I need to do is to rebuild the initrd to include a modified init script, then repackage it all into an RPM ...
1
vote
1answer
376 views

Centos inside Virtualbox — how to set custom resolution?

I have Centos inside Virtualbox. I need custom resolution for my screen. I run xrandr as proposed on the net. New resolution appears in the dropdown. But it doesn't work. Virtualbox addons are ...
2
votes
2answers
154 views

Clone Python from one linux machine to another

I want to run some of my python scripts on my new Linux (Centos 6.5) machine that I developed on another Linux machine (also Centos 6.5). But my problem is that my new machine is not having internet ...
1
vote
1answer
768 views

Cannot use EPEL repo, get NSS error -5990 (PR_IO_TIMEOUT_ERROR)

I'm using vagrant to start up a centOS 7.0 VM. My provisioner is trying to set up EPEL 7 via yum install epel-release -y and then trying to install ansible via yum install ansible -y It installs ...
3
votes
2answers
2k views

Interacting with Tape Library on CentOS 7 via mtx

I have a Quantum SuperLoader 3 plugged in via SAS to a CentOS 7 system. It shows in dmesg and lsscsi and is handled by the ch driver. $ lsscsi [0:2:0:0] disk LSI MR9271-8i 3.24 ...
1
vote
0answers
137 views

CSF not blocking port when removed from csf.conf

I have removed VNC port 5901 from the csf.conf configuration file and executed a csf -f a csf -x and a csf -e to flush and restart CSF. There is a vncserver running on port 5901 and when doing an ...
1
vote
0answers
259 views

Protected multilib versions: openssl

I'm running on Centos 6.2 x86_64 Trying to install ruby 2.1.2 ---> Package libselinux-devel.x86_64 0:2.0.94-5.2.el6 will be installed --> Processing Dependency: libsepol-devel >= 2.0.32-1 ...
2
votes
1answer
2k views

Autoinstallation of Centos7 (PXE) ends up in booting to the live-DVD login

EDIT: 2015-03-29 16:14 UTC+1: After downloading the images, the VM throws the error "Failed to mount RPC Pipe Filesystem" I am trying to do automatic installation of CentOS 7 via PXE. My PXE server ...
0
votes
1answer
278 views

Error: you do not appear to have the sources for the 2.6.32-042stab102.9 kernel installed

I've just bought a new VPS with Cent OS 6.6 installed. I'm attempting to install Asterisk 11 on this VPS via command line remotely. I've used the directions here however I get this error: you do not ...
-1
votes
1answer
288 views

Linux for real time production server [closed]

I would like to know a linux OS for a real time 24x7 running production server. I have heard that RHEL is pretty stable & suitable for this type of usage. Now I would like to know how it is ...
2
votes
1answer
796 views

Plymouth Boot Splash - Turn off switching to text

I am working on an appliance system based on CentOS 6. I have created a custom boot splash, but I can't find any information on how I would disable the feature to switch to text mode (switching the ...
3
votes
1answer
358 views

sudo -i returns an error [closed]

When I try to switch to root using sudo -i i get the error /var/tmp/sclDvf3Vx: line 8: -i: command not found... However, su - works which I will continue to use. I'm by no means a linux system ...
1
vote
2answers
4k views

Enable ssh host to guest & guest Internet on CentOS 7 guest with VirtualBox

I have 2 CentOS 7 guests running in VirtualBox on a Ubuntu host. I want to be able to: Connect using ssh from host to guest Download/install packages from the Internet on the guest. I currently ...
1
vote
2answers
1k views

gcc installation on CentOS 6.6: configure issue

I'm trying to build/install gcc on CentOS6.6, following this instructions: http://qt-project.org/wiki/How-to-Install-Qt-5-and-Qwt-on-CentOS-6 After the auto-config err'ed out: [felix@localhost ...
1
vote
1answer
67 views

Email evading my spam filter

I'm having trouble with email evading my Barracuda Spam firewall. I believe the spammers are using my A Record to bypass my MX Record which is what directs email to my Barracuda for processing. How ...
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
0answers
444 views

Installing owncloud8 on CentOS 6

I'm trying to install owncloud 8 on CentOS 6 - the problem is that the default CentOS repos have only php 5.3 - but owncloud 8 requires php 5.4. So following this guy: How to install Owncloud on ...
4
votes
2answers
244 views

Allow virtual terminal switch only for root

I'm currently working on a CentOS system (with Gnome desktop), where i want to disable the use of console for non allowed users. Actually when logging in with a standard user it launch my app and ...
0
votes
0answers
197 views

CentOS: Connection reset by Peer error while running python script

For my college project I am building one traffic generation tool using python. I have developed my own linux server and client on Vmware. I am using urllib2 for traffic generation in python. The ...
0
votes
2answers
2k views

Installing latest wireshark impossible?

It looks like installing a later version of wireshark is near impossible on redhat 6. I've searched the web extensively and can't find any questions where someone has said their issue was resolved. ...
1
vote
0answers
59 views

Preventing automount in CentOS 7

How can I tell CentOS 7 not to mount a new IDE drive (new to the system, but with data I want to examine) the first time I plug it in, so that I can do forensic analysis on it knowing I won't have ...
1
vote
0answers
499 views

Timezone problems with CentOS under VirtualBox

I have the following problem on a CentOS 6.5 system running under VirtualBox v4.2.4 on Windows 7 Pro SP1. date always prints a UTC time but with the correct timezone shown, e.g. if I run date at ...
0
votes
1answer
225 views

How do I limit inbound and outbound bandwidth to and from a specific host on CentOS

As the title says, I am trying to limit inbound and outbound bandwidth to and from a specific host on CentOS. The reason is that this host consistently uses a large amount of bandwidth and this needs ...
1
vote
1answer
50 views

default owner and group for symlink and chown pass-through

I have two questions but they are very closely related to each other. I have a new Debian server by Linode, and my previous server was a CentOS run by Hostgator. I use this command quite frequently ...
1
vote
2answers
122 views

Live resizing of an ext3 filesytem on CentOS6.5

I have a problem with my remote server hosted by my provider, I have only SSH access. The problem consist of getting this error file system rootfs has reached critical status that causes problems with ...
1
vote
1answer
65 views

Analyzing logs offsite, with a different computer

I have a computer deployed with no internet access. I have small windows in which to copy the log directory to a USB stick and analyze offsite. If I pull the logs off of a CentOS / RHEL system ...
0
votes
1answer
126 views

Why doesn't my IOstat change its output at all?

My IOstat doesn't change...at all. It'll show a change in blocks being read and written, but it doesn't change at all when it comes to blocks/kB/MB read and written. When the server sits idle...it ...
1
vote
0answers
179 views

32-bit package from a repo that should only contain the 64 bit packages

Trying to a do install of some packages and it seems that it is trying to pull a 32-bit package from a 64-bit repo. Installing for dependencies: cyrus-sasl-lib i686 ...
1
vote
4answers
130 views

How can I update a password without entering the password twice?

I effectively have a sticky keyboard (host machine to RDP to vCenter to virtual console), but need to update the password of a VM I am building. Using the rescue environment CentOS media offers, I ...
0
votes
1answer
695 views

Custom compiled Nginx with ngx_pagespeed in CentOS 7 wont start

Since PageSpeed must be compiled along with Nginx, and I don't like the way instructions are in the Google page, I decided to follow another great one. Anyway, I did everything there. And when I get ...