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

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2
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1answer
53 views

Ghost vulnerability - recompile C/C++ programs?

I've CentOS 6.0 server with glibc-2.12-1.7.el6.x86_64 running many open source services and some of my own C programs. To fix ghost vulnerability, I need to update it to glibc-2.12-1.149.el6_6.5. ...
0
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0answers
18 views

How to install keepass2 on CentOS 7?

I am looking for instructions on how to install Keepass2 on CentOS 7 unfortunately no luck so far. Is there any rpm available anywhere? Any info will be much appreciated!
4
votes
1answer
2k views

grub error : “File not found” for separate /boot/efi partition

I've installed CentOS 6.4 on UEFI enabled machine, created /boot/efi partitions. But my grub is not automatically starting, if I start the PC, I start in Windows 8. I can only start CentOS by ...
1
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3answers
2k views

Virtual Interface Not Showing up in ifconfig?

I am trying to create a virtual interface for the purpose of NameBased Virtual Hosting on my CentOS linux box; please find below is the devices' information:- DEVICE=eth0 BOOTPROTO=dhcp ...
0
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0answers
18 views

VirtualBox state suddenly SEEMs to have been restored to an earlier time

I have CentOS 7 installed on my Windows 8.1 VirtualBox, and file-system sized 30Gb. It worked fine until this morning, then the storage became full (due to Downloads and Projects). I tried a tool ...
5
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1answer
578 views

How can I make the eth1 up and always available for remote access, where eth0 will be used for host to host IPSec VPN?

I am running Amazon EC2 instance with Red hat enterprise linux, where I have two network interface. Now: eth0 is currently active having public ip where I am remotely logged in via SSH, to ...
2
votes
1answer
573 views

Fedora 14 Xen virtual machine does not detect network

I'm trying to create a para-virt Fedora 14 Xen vm on a host running CentOS 5.5. The VM appears to initially install correctly (the installer finds eth0 and can access the installation media). But when ...
0
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2answers
3k views

How can I reinstall Network Manager after uninstalling it?

I am running a version of RHCE6 on my laptop, and lately I've been trying various stuff about network configuration through command line. Last night, I tried removing the NetworkManager using yum ...
6
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3answers
7k views

How do I combine two logical volumes that reside on a single physical volume in LVM?

I have two logical volumes, one is mounted as /, the other is mounted as /home. I want to combine them, because the / volume is constantly running out of space. (Yes, I know what's using all that ...
0
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1answer
33 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 ...
1
vote
1answer
24 views

Frequently can't access Virtualmin via browser

I have a CentOS 5 server over at Digital Ocean which has Virtualmin installed (because I'm a newbie and still learning). Virtualmin is accessed by visiting https://ipaddress:10000 but that URL almost ...
0
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2answers
489 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
56 views

What's the difference between “errors:” “dropped:” “overruns:” and “frame:” fields in ifconfig RX packets output?

Can someone please elaborate on the difference between the various RX packets fields in ifconfig output? For example, let's say I run ifconfig and see the following: eth0 Link encap:Ethernet ...
0
votes
2answers
23 views

how do I find the location of mysql drivers on CentOS 7?

MariaDB is installed on a remote CentOS 7 server. How can I find the location of the nearest equivalent to mysql-connector-java-5.0.8.jar in the server's file system? grep seems to only search ...
0
votes
1answer
41 views

Entries in /etc/crontab not getting called in Centos 6.x

I created a dummy entry in /etc/crontab, but it doesn't get executed according to the cron log: /var/log/cron: Feb 7 08:20:01 localhost CROND[22781]: (root) CMD (/usr/lib64/sa/sa1 1 1) Feb 7 ...
0
votes
2answers
558 views

vgdisplay shows 0 free PE/size

I'm trying to configure a CentOS HA system with 2 nodes, with DRBD for replicated storage. I'm following the "Clusters from Scratch" guide, and at the DRBD portion, I need to create a partition for ...
0
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2answers
78 views

CentOS - commands in rc.local not run

My /etc/rc.local script is quite simple, like this. #!/bin/sh touch /root/test1 touch /var/lock/subsys/local touch /root/test2 modprobe -r ftdi_sio modprobe ftdi_sio vendor=0x0403 product=0x6015 ...
2
votes
1answer
25 views

calling javac from CentOS 7

I want to be able to use the javac command on the CentOS 7 terminal. How do I set the PATH variable in order to accomplish this? The following explains relevant aspects of my current environment. ...
0
votes
1answer
48 views

Port Forward :80 and :8080 to Two Different Servers

On a CentOS 6 server with an IP address of 172.16.1.10, how can I configure iptables to route traffic destined for 172.16.1.10:80 to 192.168.1.10:80, and traffic destined for 172.16.1.10:8080 to ...
1
vote
1answer
69 views

Initialization Sequence Completed, but terminal wont give a prompt

I just installed openvpn on a remote CentOS 7 server using the instructions in this tutorial. The only change I made to the tutorial was to use @GarethTheRed's instructions for configuring ...
0
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0answers
25 views

Compatibilty of the following softwares

I am a professor (Mechanical Engineering department) at a college which is making the transition from Windows to Linux. However, we are quite unsure whether all the CAE softwares that we use would be ...
1
vote
1answer
774 views

Any better alternative to chroot on an OpenVZ VPS?

Are there any better alternative to chroot environment? I'm thinking about running nginx on a jailed environment. BTW, I'm on OpenVZ VPS, so modifying the Kernel is a no-no. (I think that prevents ...
9
votes
3answers
623 views

Using real time kernel headers to compile userspace code vs default headers

Per customer requirements, I installed CentOS 5.6 with the default kernel. With this kernel installed, the time.h file includes the #define CLOCK_MONOTONIC. Now, a real-time kernel was installed ...
4
votes
6answers
6k views

CentOS | [root@hostname] does not show anymore?

For some reason I logged into my CentOS6 server and at the beginning of every line it normally shows [root@hostname]# Now it shows -bash-4.1# What does this mean? And how to I get it back to ...
1
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1answer
701 views

Apache Virtual Host Include Not Working

Attempting to get my domain to redirect to the associated vitual hosts, but the Include is not working as expected and displaying the proper htdocs directory. It is still displaying the default apache ...
1
vote
1answer
538 views

Can't find vgaswitcheroo directory in CentOS6

I've installed CentOS6 on my laptop, which has a built in VGA and a discrete (AMD) VGA. I used to switch AMD video off in other distro's (e.g. Fedora, Arch) using: $ echo OFF > ...
1
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0answers
15 views

Automate a gratuitous ARP every x seconds

There may be another issue here, so any other questions or comments are welcome. I have a CentOS 6.6 VM running under VirtualBox. It is connected to a GNS3 topology using a UDPTunnel. Everything ...
4
votes
1answer
775 views

CentOS - how to install vsftpd for specific username to have specific directory access only?

I have VSFTPD installed in CentOS. Where i have one username "lesstrust1", when the user login i want the user only can upload/download to this path /var/www/html/oxwall $ yum install vsfptd $ ...
3
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0answers
110 views

initramfs / UUID problems after cloning

So I just cloned a Centos7 "everything install" VM to a physical disk using VMWare Workstation and Clonezilla using the instructions here: ...
8
votes
4answers
2k views

/bin /etc /lib64 /root /sbin deleted or moved by mv folder/* /* while su

OS is Centos 6.5 64-bit I downloaded a tar file and wanted to untar and mv it. I untared, then accidentally (as root) ran mv folder/* /* instead of mv folder/* . bash said it couldn't overwrite some ...
0
votes
1answer
72 views

CentOS 6.5 kernel vs CentOS 7 kernel

Its been long that i have heard that CentOS 6.5 kernel (2009) is "Too Old" as compared to CentOS 7 kernel (2013). I want to better understand what is meant by "Too Old". Comparing 2.6.32 to 3.10, ...
0
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0answers
29 views

Printing via Windows Print Sharing (SMB) as AD user

I am in the process of researching a linux distro for my workplace and am currently checking to see if we are able to configure our chosen distro (centos7) to connect to our MFD printers. I am able ...
0
votes
1answer
19 views

Where are yum groups defined?

I am setting up a cluster and for whatever reason some nodes do not have all the groups required to set up Infiniband ('Infiniband Support' in particular.) I know I could just find the list of ...
3
votes
1answer
138 views

RES memory more than initial and maximum memory for java

We have a java application running on Centos 6.4 what we notice is that the RES is around 370m which is more then the allocated max that is 256m. Does this signify that we the application is leaking? ...
2
votes
2answers
681 views

Can't use my old my.cnf from MySQL 5.5.38 in newer 5.6.19

Ok so I have been trying to upgrade MySQL 5.5 to 5.6. I have been given this set my.cnf file (see below). I was able to uninstall the MySQL 5.5 rpms and install the 5.6. When I reload the back up ...
-1
votes
1answer
117 views

How do I read Maildir RFC822 messages from the CentOS 7 terminal?

In a CentOS 7 server with dovecot, postfix, mailx installed, I have mail configured to be stored in Maildir format. How can I use the terminal to access and view the RFC822 messages stored in a ...
0
votes
1answer
115 views

Can call login command from terminal

I want to create a user using useradd from root in my terminal window, after it I call passwd to set user's password. So I cant call login username because when I call it from terminal it closes ...
0
votes
1answer
24 views

Centos, how to install “topicmodels” package on R?

I'm using a Linux CentOS release 6.6 on my laptop, and I've tried to install the "topicmodels" package into my R environment. So I used the install.packages("topicmodels") command but unfortunately ...
2
votes
1answer
1k views

Can I change uuid for network interface in ifcfg-eth* using uuidgen?

I'm creating a script which configuration the network interfaces. The script which generates /etc/udev/rules.d/70-persistent-net.rules and names interfaces to my preference. In CentOS 6.5, my ...
1
vote
1answer
24 views

How to run specific architecture (32/64) of Python in Centos6 when both are installed?

I have a Centos 6.6 Docker image being used for an automated build. It has the default x64 Python 2.6.6 installed. I need to run some things in a 32-bit Python environment. I snagged the ...
3
votes
1answer
99 views

Setting up domain with multiple servers

I am setting up a small web hosting service for my clients. I have my dedicated server which will be the shared server to host clients websites using WHM/cPanel. I have a separate VPS server that I ...
1
vote
1answer
4k views

SELinux Write access for vsftpd and samba

This should be easy enough I think, but I'm new to SELinux. I have a CentOS 6 file server. I have some LVM file systems at /var/media and I want to use both Samba and FTP to share them with a Windows ...
0
votes
0answers
50 views

error installing mod_proxy_html: “cpio: rename”

I am trying to install proxy_html module on a centOs 6.x server. I think it is giving me an error - but it also indicates that it completed. Here is the error: error: unpacking of archive failed on ...
0
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1answer
5k views

CentOS 6 not regestering new hostname on Windows Server 2003

I rebuilt a Windows 7 Workstation with CentOS 6.5. The Windows 7 had a host name aaa attached to domain ddd.local. The new CentOS hostname is bbb. When I try to ping it: $ ping bbb ping: unknown ...
0
votes
2answers
643 views

httpd error: Address already in use: AH00072

I have a server, CentOs 6.5 which were installed xampp by a friend of mine. But I thought it's best to install apache, php and mysql from yum. I have it removed simply by using this #rm -rf ...
3
votes
0answers
134 views

Permission problems. Can't retrieve inbox mails from dovecot

I got a VPS server at a webhoster which has CentOS 6.6 as operating system. Because I have multiple domains which are used by various people this server is going to serve multiple roles: nameserver ...
1
vote
1answer
1k views

Ffmpeg problems on centOS 5.8 64 bit

I did install ffmpeg with winff, unsuccessfully when I try converting avi to x264, it says I don't have it. When I try to convert mp4 to Xvid I get unknown encoder 'libxvid'. It's like nothing really ...
2
votes
1answer
896 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 ...
1
vote
1answer
35 views

How to force rpm and yum to fail if a GPG signature is missing or cannot otherwise be verified?

How can I force rpm and yum to fail if a GPG signature is missing from a package or otherwise cannot be verified due to a missing key? For the example below, assume the RPM has been signed but the key ...
3
votes
1answer
4k views

CentOS 6.5 Login Screen GDM Issues

I have a few issues with the GDM login screen. I am using CentOS 6.5 and installed GNOME. I was able to change the background of the login screen by replacing the default.png image on the system. ...