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

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firewalld settings for OpenVPN with https, ssh, and smtp

I am configuring a remote CentOS 7 webapp server to wrap https and ssh inside OpenVPN, while keeping smtp running outside of OpenVPN. I notice that, when I establish an OpenVPN connection from a ...
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161 views

“No package stress available, nothing to do” and "bash: yum-config-manager:command not found

I am trying to install the stress package on CentOS 7 virtual machine running on vmware player on windows 7 laptop. I have tried many packages and have updated yum but whenever I run sudo yum install ...
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196 views

What's wrong with my NFS setup?

I had previously been able to configure an NFS server on a computer running CentOS 6.6, and to mount the file system in a Virtual Machine with the same OS and using autofs. Last week I did a fresh ...
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1answer
100 views

Question about CentOS and KVM virtualization and PCI Passthrough

I want to replace Windows Server 2012 R2 and Hyper-V on my homeserver with CentOS and KVM. My plan is to virtualize one Windows 8.1 machine and several smaller Linux machines like on Hyper-V, there is ...
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315 views

yum command not found, cannot install stress [closed]

When I try to install the stress package on SUSE11 and Centos 7, yum tells me that it isn't found or that stress as a command does not exist. Anywhere I have looked online tells me that it is as easy ...
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53 views

Delete/repair files with weird permissions/owner/group

I have the following files (output of ls -l): ?rw------- 6144 1684128777 2049835008 50331648 Jan 1 1970 image1.jpg br-xrwSrw- 25120 1987343475 1936028517 110, 110 May 30 2032 image2.jpg ...
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1answer
52 views

To be SOX compliant I need to keep years worth logs. Need help with particuliars

My company is going through an audit and I have taking over the role of Linux systems administrator unofficially. I see our current logging system has it to were we basically keep a months worth of ...
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27 views

Xvfb differences on Ubuntu and CentOS

I have an html screen capture utility built using Qt that uses WebKit. It basically takes html as input and produces a screen capture as a png. On Ubuntu desktop 12.04 the capture quality is ...
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21 views

Have CentOS push custom updates to windows 7 clients

Is there anyway do deploy updates for Windows OS desktops, from a custom source? I frequently work on computers, and installing Windows 7 with an OEM disk and waiting for my slow internet connection ...
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27 views

Temporarily mounted filesystems suddenly unmount

On a CentOS 7 machine, I've had several instances recently where filesystems mounted manually (not using an entry in fstab) suddenly get unmounted. This always occurs when I/O is occurring on the ...
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2answers
61 views

menu script over ssh

I have a script that asks for input from the user. When I run this locally it does what I want however I'd really like to run it over ssh. I've tried the regular ways I'd run a script: ssh ...
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1answer
34 views

Centos & PostgreSQL - cannot create database cluster

I have a server with CentOS 6. I installed on it postgreSQL 9.4, but didn't tell my mate and he installed 8.4 which included in CentOS by default. So we removed (service remove postgresql) both of ...
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11 views

Vm doesnt show any gui

i have Centos 6 installed, it was work fine till today, but suddenly when i turned it on today my vms doesn't show any thing, all my setup are correct i know that for sure but my graphic doesnt work i ...
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1answer
15 views

Running xinetd and httpd on centos 6

We are running several centos 6.4 lamp stacks, and our backup solution (unitrends) has a client that requires xinetd. Can these two coexist on the same server? If so, is there any secret handshake I ...
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15 views

How to reboot OS in KRDC without command?

I cant enter the command because some app are been stucked. Ctrl+Alt+Del exit me into the Windows Logon Screen. Alt+PrtSrn+b reboot myself. What to do?
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35 views

How to reboot centos with hotkeys?

I stuck on installation in centos with some soft on error. How I can exit of installation proccess or reboot server?
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59 views

CentOS 7 very slow boot up after changing NIC

I have created a VM in VMWare esxi. I then cloned the VM, the clone receiving a new NIC along with a new MAC address. I change the IPADDR, HWADDR, and BOOTPROTO values and reboot the cloned-VM. ...
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1answer
137 views

multiple user-types/access-rules for OpenVPN on CentOS 7 and firewalld

How can I define separate roles for users and administrator in OpenVPN running on CentOS 7 server? Specifically, the users must only be allowed to https, while the administrator must be allowed to ...
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2answers
28 views

Ubuntu CentOS RHEL cross bash script su support

I know that title was a little ambiguous. Allow me to explain our issue. We designed an installer script on Ubuntu since Debian based systems are our primary core, however, some of our cloud based ...
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86 views

firewall-cmd doesn't work when called through OpenVPN connection, why not?

I recently set up OpenVPN to run on a remote CentOS 7 server. Once I establish an OpenVPN connection to the remote server from my local machine, I am able to ssh through the VPN tunnel with ssh ...
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73 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 ...
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17 views

How can I configure web server with virtual hosts and serve content using tilde

Have a CentOS Linux release 7.0.1406 (Core) where I have no domain, only the IP I need to configure it so that I can use as web host and serve the content of a directory located in for example ...
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101 views

changing default centos 7 workspaces

On CentOS7, using the gnome environment, I do not seem to be able to add, remove, or change the workspaces. I prefer to have 2 workspaces, or no workspaces, and understand the usefulness of the ...
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40 views

Modifying SELinux settings to allow for MySQL to run on CentOS7

I'm trying to install MySQL 5.6 on Cent OS 7 with SELinux enabled and am trying to get past the error (in /var/log/audit/audit.log): type=AVC msg=audit(1424111345.853:558): avc: denied { execmem } ...
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36 views

How to install libsnmp on CentOS 6.5?

I'm trying to use software on my server that requires libsnmp. I tried running: yum list libsnmp But it says: Error: No matching Packages to list I also tried: yum search libsnmp But it ...
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71 views

GSettings / DConf settings not saved permanently

I have a problem with GSettings /Dconf on my Centos 7 + Gnome Classic box. I'd like to turn the desktop animations off with the following command: gsettings set org.gnome.desktop.interface ...
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48 views

launching fish shell to new terminal of tcsh on centos

I have downloaded fish shell on my centos, but when I switch command to /bin/fish or even try to run xterm -e /bin/fish I am getting following error: Standard input: echo $_ " "; __fish_pwd ...
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1answer
21 views

CentOS Black Screen after 4+ hours of indexing

I am running a CentOS virtual image on virtual box. It has liferay and solr installed on it and I am trying to index a Lar file that is 50+ MB of metadata. This is estimated to take more than 12 hours ...
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1answer
57 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. ...
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1answer
103 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!
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20 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 ...
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53 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 ...
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32 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 ...
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126 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 ...
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1answer
38 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. ...
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37 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 ...
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28 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 ...
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17 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 ...
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2answers
139 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 ...
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1answer
92 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 ...
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92 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, ...
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37 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 ...
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1answer
27 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 ...
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1answer
74 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 ...
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39 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 ...
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1answer
122 views

Cannot ssh into a fresh install of CentOS minimal on lan

I've downloaded CentOS 7 Minimal and installed on an old laptop. I want to be able to ssh to the machine from other machines on the same lan. But I keep getting this error .. ssh: connect to host ...
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50 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 ...
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82 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 ...
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168 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: ...
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175 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 ...