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

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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
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2answers
46 views

How do I install an older version of Apache httpd in CentOS 6 using YUM

How do I install an older version of Apache httpd on my CentOS 6 machine? When I do: # sudo yum --showduplicates list httpd | expand I get: file:///media/project/repodata/repomd.xml: [Errno 14] ...
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1answer
30 views

How do i create create a bridge for virtual machines

so the issue is that i am using hetzner for my server hosting and they suck at making any working tutorial. i have purchased a /29 subnet block. 136.243.229.24 / 29 - subnet 136.243.6.76 - main ...
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3answers
7k views

How can I make iptables service start automatically after reboot on CenOS/RHEL7?

I am having a few issues with a newly installed home server I am preparing. I have installed CentOS7 on it and I found that port 80 and 443 are off by default. I therefore added them to the iptables ...
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5answers
3k views

How to configure SELinux to print date and time in each entry in audit log?

I'm using CentOS 5.5 and by default my /var/log/audit/audit.log looks like this: type=USER_AUTH msg=audit(1331897657.359:8435): user pid=15610 uid=0 auid=4294967295 ...
0
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1answer
24 views

CentOS 6.7: 'No address associated with name' as 'hostname --fqdn' output

please, before read this question, I would pray you to consider that I'm a Linux newbie and that I really need a help. I apologize in advance if the question will be trivial or stupid, I will search ...
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0answers
7 views

lx92 server is not connecting from individual session but its connecting from Jump servre

Please help on this I have an issue in my environment my server Lx52 is connecting from Jump server IX4 but its not connecting from separate putty session Note :we are using Xen desktop through ...
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2answers
204 views

ps - what is the difference between -o comm and -o command?

On CentOS 7.0.1406 I get differing output when running ps -A -o pid,command | grep [r]esque than when I run ps -A -o pid,comm | grep [r]esque The latter returns nothing; the former what I would ...
3
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1answer
15k views

/dev/root does not exist in CentOS 7

I take an error message when installing CentOS 7 from usb. What is it solution?
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0answers
13 views

How do I get a manifest to run from my Puppet Master server to a Puppet Agent node?

I am trying to run a Puppet manifest for the first time on two new servers. But I keep getting errors. I recently set up two CentOS v7 servers. They have passwordless SSH between them. Ports 22, ...
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1answer
439 views

Start SSH in CentOS rescue mode

I am booted into rescue mode after inserting the DVD. OS is CentOS 6.7 64 I've tried cd /mnt/sysimage chroot /mnt/sysimage service sshd restart which gave back service command not found. What do ...
2
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0answers
28 views

Kdump.service FAILED centOS 7

I am getting this error on my centos 7 x86_64 after "yum update". After rebooting the host it went into emergency mode. after entering this: systemctl status kdump.service I get this: ...
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1answer
2k views

CentOS 7.2 (Now to update)

CentOS 7 (through and including 7.1) offered the Applications | System Tools | Software Update applet. This applet allowed users to update CentOS 7. Where is the applet in 7.2 v1511? I do not see ...
2
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2answers
68 views

Cannot connect to localhost on port 4430

I am running vagrant from a virtual box with CentOS and Nginx installed. I've created a reverse tunnel from the vagrant box to a remote server but when I am trying to connect to my localhost on port ...
1
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1answer
22 views

Remove filesystem from an unpartitioned disk

I have an un-partitioned 500GB disk with a ext3 fs using the entire disk. If I make sure there are no partitions on the disk using fdisk or parted, "ssm list" will still show an ext3 fs on the disk ...
3
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3answers
321 views

What does make -jn mean?

I am trying to install LLVM on my CentOS machine. In the installation tutorial of LLVM, a flag -jn is specified along with make. It says to perform make -jn and also says "Choose n such that make ...
4
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4answers
30k views

Yum update problems on CentOS 6.5 minimal as VMware guest

INFO: I am using Windows 7 Pro (64bit) with VMware Workstation version 10.0.1 . I am using CentOS(64bit) 6.5 minimal, for the first time. I am running this from my workplace network, which may use a ...
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0answers
20 views

Back up script causing issues

I've got this backup script I'm trying to use and I'm having issues with it. #Setup Variables DOMAIN=domainexample.com FILENAME=${DOMAIN}.$(date +%Y%m%d) DBSERVER=localhost DATABASE=databasename ...
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0answers
13 views

How can I figure out why an HID unikey device is not being recognized by the software needing it?

I have a custom built CentOS machine. For those of you who know Vagrant, the image is at https://atlas.hashicorp.com/puppetlabs/boxes/centos-7.2-64-puppet. When I connect an HID Unikey device to this ...
3
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1answer
32 views

yum update exits with “Didn't install any keys”

I just installed Centos 6.7 on Virtualbox and ran yum update with this output: warning: rpmts_HdrFromFdno: Header V3 RSA/SHA1 Signature, key ID c105b9de: NOKEY Retrieving key from ...
0
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1answer
754 views

How to start my network in centos7?

I have edited the /etc/sysconfig/network-scripts/ifcfg-enpos2 : BOOTPROTO="static" IPADDR=192.168.1.105 NETMASK=255.255.255.0 NM_CONTROLLED=no I can't surf the web When to reboot,how to start my ...
0
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1answer
22 views

PowerDNS returning ServFail for all requests

I have been working to get PowerDNS running on CentOS 7 x64 that is up to date. Followed this guide for everything except Nginx because I am using Apache: ...
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0answers
27 views

Network not working after wake on lan

I just installed a fresh copy of CentOS 7 on my server at home, it worked great until I used etherwake to wake the server up. After doing so the network no longer works, I'm not sure if this is a ...
5
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1answer
3k views

How to create a git repo using Nginx?

I've a CentOS 5 server at domain.fr. I am trying to set a subdomain so that I can use it with git : git.domain.fr My repositories are in /home/git (example /home/git/repos.git) I've installed ...
4
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1answer
33 views

Mount CIFS shares as non-root on RHEL7 w/o desktop

We have a Windows (AD) domain which a RHEL/CentOS 7 server has joined (SSSD / realmd). The users log into the server via SSH with their AD credentials. Now the users should be able to mount some of ...
2
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1answer
53 views

CentOS - meaning of the boot screen progress bar layers/colors

Is there any meaning of the CentOS (I guess RedHat and if I remember correctly Fedora too) boot screen progress bar layers*? (*) Layers ~ white, lilac(?) and violet colours. I can't figure out any ...
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2answers
65 views

Installing (html) tidy conflicts with filesystem package

I'm on CentOS 7 trying to install tidy. Since there is no package provided by the usual suspects, I've downloaded the tidy-5.1.25-64bit.rpm RPM from http://binaries.html-tidy.org/. When I install this ...
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0answers
25 views

CentOS 6 - Order of network interfaces when running “ip address show” command

I have installed CentOS 6.7 on new HP Gen9 server and decided to rename interfaces using udev so they are in order eth0-7 from left to right when looking at servers back (originally interfaces were in ...
0
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1answer
100 views

How to install Gnome Schedule in Cent Os 7

I tried to install gnome-schedule in cent os 7 but it throws following error but the same package works well in ubuntu. Download url: http://gnome-schedule.sourceforge.net/ gnome-schedule-2.2.2 ...
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1answer
30 views

Is it possible to change how usernames are displayed on an AD bound CentOS system?

I don't even know if such a thing is even possible. I'm not referring to the bash shell customization. On an Active Directory bound CentOS 7 system, a local user account will just show as username ...
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1answer
18 views

virtualbox install somehow corrupted

I have a HP Zbook laptop running CentOS7.1. I use it to run an Ubuntu 14.04 VM, which has been working fine for quite a while. This morning I saw some weird problems (can't remember exactly what), ...
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2answers
1k views

VirtualBox Kernel Module Installing Issue

I installed VirtualBox, in the first run i got this warning: WARNING: The vboxdrv kernel module is not loaded. Either there is no module available for the current kernel ...
4
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6answers
13k 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 ...
6
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2answers
200 views

Why are .so packages provided by the devel packages?

I've seen an interesting pattern in RPM packaging. The main library package will include the shared library itself: /usr/lib64/libavcodec.so.54 The -devel package will provide headers and a ...
0
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1answer
1k views

Getting Minor Version Mismatch Error with Php and Mysql

I randomly started getting this error when trying to instantiate a new mysqli instance in php script: mysqli::mysqli(): Headers and client library minor version mismatch. Headers:50541 ...
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0answers
20 views

stop while booting giving error of Genetrating “/run/initramfs/rdsosreport.txt”

I am getting following error while booting my centos 7 machine Generating "/run/initramfs/rdsosreport.txt" Entering emergency mode. Exit the shell to continue. Type "journalctl" to view system logs. ...
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1answer
91 views

HPE Dynamic Smart Array B140i

I am pretty new in linux world and I want to buy a HP ProLiant ML110 Gen9 server with the raid controller HPE Dynamic Smart Array B140i. I read somewhere in forum, that linux does not support the ...
0
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1answer
1k views

How do I get debug information from rsyslog?

I followed the directions from: http://www.rsyslog.com/doc/debug.html I put the following in /etc/rsyslog.conf: $DebugLevel 2 $DebugFile /root/RSYSLOG.txt then I try: kill -USR1 `cat ...
0
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1answer
50 views

run multiple instances of MySQL CentOS7

I need to have multiple instances of MySQL running on my PC. I did this: yum install mariadb-server mariadb => install mysql mysql_install_db --datadir=/var/lib/mysql => use mysql_install_db ...
1
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1answer
33 views

How do I rename my TTY terminal?

I have a Centos 7 server with 48 USB to serial devices plugged into it. Using udev, I was able to write a script that creates symlinks in the /dev folder that map the ttyUSBx devices to corresponding ...
0
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1answer
14 views

Deploying a package through puppet from URL

How can i install a package through puppet by using the URL of the .tar.gz of the package on centos 6 client. Is there any native support in puppet without installing anything extra on the puppet ...
0
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1answer
1k views

Unable to view traps through snmptrad?

I've been unable to view traps through snmptrapd. I generated a SNMP trap manually using the below provided snmptrap command: snmptrap -c public -v 2c -n "" localhost 0 uptime But I'm ...
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0answers
12 views

Set firewalld on CentOS 7 for Cloudstack service and unistall iptables

I was following Cloudstack installation instructions, when I realized that iptables is not included in the OS, it was replaced by firewalld. So first of all I've shut down firewalld: systemctl stop ...
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1answer
35 views

no iptables, no selinux, port 81 in virtualhost still not working

I try to open port 81 as a virtualhost. after setting apache, I can CURL localhost:81 from local machine and get response(yes it was listening port 81). However, when visit the same address from ...
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0answers
38 views

sssd realm discover: Not authorized to perform this action

I am testing sssd on CentOS and am unable to progress as per the error below: [root@sssd-testing ~]# realm discover realm: Couldn't discover realms: Not authorized to perform this action ...
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1answer
1k views

How to use i3 on CentOS 7 with Gnome?

I have a CentOS 7 with Gnome running on my machine. Now I want to use i3 as the window manager. I managed to install i3 but I don't know how to make CentOS 7 use i3 now. I tried to edit .xinitrc like ...
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1answer
3k views

Trying to get firefox running on CentOS 6 minimal iso - can't open display

I've got minimal CentOS 6 running on an Oracle VirtualBox on a Mac. I'm trying to get Firefox up and running so I can download some web files into the VM. I installed Firefox (yum --enablerepo=remi ...
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1answer
25 views

grep restart script if not running

Hi guys i'm running into an issue here that I need to have a nohup php script run in the background and make sure it's always running and restarted if it crashes. I run the following bash script using ...
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1answer
48 views

How can I restrict SSH login on CentOS 7 to Active Directory groups? [closed]

I've successfully added CentOS 7 to AD and can login locally or SSH with domain credentials before I try restricting login. I'm using the AllowGroups flag in sshd_config and this works if I specify a ...
1
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1answer
1k views

Empty desktop after installing xrdp on Centos 6.5 with XFCE as window manager

I followed the directions to install xRDP from this site (http://ajmatson.net/wordpress/2014/01/install-xrdp-remote-desktop-to-centos-6-5/) When I RDP from Windows -> Linux, I successfully enter ...