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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2
votes
2answers
43 views

Ping from subinterface

I have a sub-interface eth0:0 auto eth0:0 iface eth0:0 inet static address 192.168.2.96 netmask 255.255.255.0 gateway 192.168.2.1 and I try ping -I eth0:0 8.8.8.8 and I ...
0
votes
2answers
271 views

Centos 7 - where is jfx library for openjdk8?

I have centos 7.1. And I installed openjdk8 and openjdk-devel8. However, when I tried to compile in netbeans my jfx application I get package javafx.* does not exist. After some investigation I see ...
1
vote
2answers
181 views

many missing dependencies , no links (centOS 7 , postgresql 9.3)

I am trying to install postgresql 9.3 on centOS 7 first , I needed to install libxml2 , and then I tried to install libxml2-devel /$ rpm -iUvh http://xmlsoft.org/sources/libxml2-devel-2.9.2-1....
1
vote
1answer
34 views

/ Owned by postfix:root after installing iRedMail

I followed this tutorial to install iRedMail on my CentOS 7 x64 System: https://www.digitalocean.com/community/tutorials/how-to-install-iredmail-on-centos-6-5-x64 Why the *"$@*3 is / now owned by ...
1
vote
2answers
267 views

How to Resolve a .so Dependency

I have a package (.rpm) on CentOS 6.5 that requires a .so file, which I also have on my machine. When I attempt to install the package I get an error stating unresolved dependencies regarding the .so ...
0
votes
1answer
552 views

What is the best way to install Oracle 11g R2 and SQL Developer on CentOS 7 / RHEL 7?

I read this article suggesting use of Oracle's yum repository in conjunction with CentOS 6.x. I also read this other article, which seems to suggest manually downloading zip files and taking many ...
0
votes
1answer
450 views

Installing Ioncube loaders without issues CentOS 5.9 [closed]

Seem to be having issues installing Ioncube loaders on CentOS 5.9. I followed this guide to install Ioncube: but it's still not working on the site at all, I keep getting this error on BoxBilling, ...
0
votes
2answers
3k views

error re-installing httpd on CentOS 7, how can I resolve it?

On a CentOS 7 server, I am encountering an error when trying to re-install httpd. How can I resolve this error and get httpd up and running again? Here is the first error that resulted when I ...
5
votes
2answers
1k views

Error after installing dnf on CentOS 7

Installed dnf according to these instructions: yum install epel-release -y yum install dnf after that dnf --version works fine but dnf repolist or anything else gives: Extra Packages for ...
0
votes
1answer
31 views

How to resolve duplicate packages due to interrupted yum update

This morning I went to update gitlab-ce using yum on our CentOS6 server from 8.8.4 to 8.8.5. Unfortunately about halfway through the first of the two gitlab-ce package install steps I accidentally ...
0
votes
0answers
34 views

Saving log files in the user account /home/user when hosting mutliple sites [on hold]

I'm using Centos 7 and virtual host. The sites are all working great but I am trying to save the ErrorLog and CustomLog in /home/user/www/log instead of /var/log/httpd. When I change the location of ...
5
votes
3answers
10k views

CentOS 7 - Rename network interface without rebooting

I'm renaming network interfaces by modifying the files in /etc/sysconfig/network-scripts. eth0 -> nic0 eth1 -> nic1 The content of the network scripts looks like this, after modification: # cat /...
0
votes
1answer
30 views
0
votes
0answers
420 views

How to edit the “Internal Server Error” without redirecting to somewhere else?

On the web this is what I see: Internal Server Error The server encountered an internal error or misconfiguration and was unable to complete your request. Please contact the server administrator, ...
1
vote
1answer
169 views

How to find site on shared server that is generating httpd requests

I have a shared server that had a Wordpress site that was compromised. I cleaned out all the wordpress sites on the server and everything seemed to be fine. When I checked today I noticed a large ...
1
vote
0answers
640 views

Improving TCP performance over a gigabit network

I have two machines both network cards speed is 10Gbps. The inbound bandwidth between the two machines is 10Gbps, the outbound bandwidth internet bandwidth is 500Mpbs. Both machines are using public ...
1
vote
2answers
2k views

yum install mod_auth_token not working on CentOS

On CentOS 6.5 how do I make yum install mod_auth_token work these days? According to my own HOWTO I wrote 12 months back, you used to be able to just type it now you have to DIY it, which is bad ...
2
votes
1answer
4k views

I cant save files in /var/www/html

I'm running Centos 6.5 and I'm having problems saving my files to /var/www/html. The folder currently belongs to root and I have gone through everything from SELinux to configuration procedures, but ...
3
votes
3answers
58 views

Where to turn first when out of free space on Cent OS Web Server?

I am a very new Systems Administrator. I have a Windows background and am now a Jr. Systems Admin working with Cent OS 5. Our web server runs Cent OS 5 and uses PHP/MySQL for our web applications. ...
2
votes
2answers
4k views

Running Open Vas via KALI Linux

We would like to run open-vas penentration test on a remote server and would no like to install it on the remote machine. Thus we have setup a Kali Linux Live machine for this purpose. So we first ...
2
votes
1answer
204 views

How to block ip adresses which access more than n-pages in m-prediod of time?

How to block IP adresses which access more than n pages in m period of time? I want to block all auto-traffic and I am not sure how to approach this issue.
1
vote
3answers
572 views

Is there a way to find out which webpages are being accessed by clients on a UNIX webserver?

My web server is running CentOS and every time a certain page is accessed on my forum, httpd locks up and I can never seem to pinpoint the exact file. Is there any way to view the pages that ...
1
vote
2answers
2k views

SSH Connection Refused In CentOS?

For a week, SSH was working perfectly. Today I restarted my server and I got this error in my Mac terminal: ssh: connect to host 162.243.7.7 port 22: Connection refused This is very odd... I am ...
4
votes
3answers
7k views

Yum says a package is installed, and not installed, and it's blocking other packages from being installed

I am trying to install a new package (glibc-static), and I get the following error ---> Package nss-softokn-freebl.i686 0:3.14.3-18.el6_6 will be installed --> Finished Dependency Resolution ...
0
votes
1answer
820 views

Big trouble : rpm empty db, install V3 RSA/SHA1 Signature, key BAD, YumRepo Error

I'm little tired because I have spent hours solving problems, and can't find a solution on Centos 6.6. I have many troubles: rpm db is empty: try googling, find restore process, but always empty ...
4
votes
2answers
472 views

Why does 'cat useradd' succeed in this case?

I have a fresh installation of CentOS. I created a user and added it to wheel group (to add it to sudoers list). I logged in with the credentials of new user. I then run the command cat useradd. ...
2
votes
1answer
164 views

Apache SSL timeout is not matching settings

I have a CentOS 6.7 apache Server version: Apache/2.4.7 (Unix) server with both http and https ports configured. They are configured the same, except for the SSL specific settings. The most relevant ...
0
votes
0answers
66 views

Why can't I install CentOS 7 in dual-boot with Winows 8.1?

I need to build something under Apache Cloudstack. As for now I don't know exactly what, it needs to be some kind of application/project that would shows up some of the most relevant peculiarities of ...
2
votes
1answer
36 views

unable to install centos on my windows 10 laptop making it dual boot

After hearing the news that CentOS 7 had been published, I decided to install it on my computer. I downloaded the ISO image from the CentOS official website (the one named CentOS-7.0-1406-x86_64-DVD....
0
votes
1answer
866 views

How to find the path of JDBC driver in CentOS

I ma using CentOS 6.7. I want to know the path where the JDBC driver is located. The whereis jdbc command returns jdbc: so I think the JDBC driver is installed, but I need to know its exact path.
0
votes
0answers
27 views

snortd.service doesn't load on centos 7

I have installed snort Ids via its manual but there is a problem I am facing right now. There is no snortd service in init.d folder and when I run systemctl status snortd.service I get the following ...
1
vote
1answer
2k 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 ...
0
votes
0answers
92 views

Client to Client https in OpenVPN on CentOS 7

In the Centos 7 -hosted OpenVPN defined below, why can't the windows_client defined below https into the centos_vm1_client defined below? The problem seems isolated to the configuration of the ...
6
votes
3answers
12k views

Two ways to lock a password but only one to unlock

CentOS 6 Linux has two ways to lock a password: passwd -l usermod -L Today I found out, that they do something different. passwd writes two exclamation marks into the shadow file. # passwd -d ...
1
vote
1answer
2k 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 ...
0
votes
0answers
38 views

Lots of strange disappearing connections to my Centos7 host

I run my website on a Centos 7 cloud instance. I log in via ssh, and to view connections I use 'ss -tap'. Whenever I first do this I see approximately two dozen unique IP addresses for 'users: httpd', ...
4
votes
2answers
6k views

Installing python modules for python2.6

On my CentOS 5.8 system (el5 , 64bit), I had python2.4 after OS install and I installed python2.6 now. Now I want to install python modules using yum. But whenever I install a new python module it "...
0
votes
1answer
43 views

CentOS 7 Why does the beep package not exist?

I am not able to find the fabled 'beep' package using a yum search. How am I to make a beep on my system from the terminal without the package? echo '\a' does not work either.
0
votes
0answers
40 views

CentOS Virtualbox vdi to raw problem

So I had CentOS7 running on a virtual machine then I tried to move it to a physical hard drive using the commandline "D:\Program Files\Oracle\VirtualBox>vboxmanage clonehd --format RAW D:\Virtualbox \...
0
votes
1answer
1k views

Upgrade OpenGL from 1.2 to 2 for Nvidia GT218 [GeForce 310]

To run my application OpenGL version 2.0 or higher is required. glxinfo | grep OpenGL yields: Xlib: extension "NV-GLX" missing on display ":1007.0". OpenGL vendor string: Mesa project: www.mesa3d....
0
votes
2answers
3k 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 ...
6
votes
3answers
39k views

How to install g++ 4.7.2 & c++11 on CentOS 5.x?

I'm trying to install the latest stable g++ and c++11. My host did it through yum install and thought that it was the latest, but it's not, and they are now saying that this is beyond their level of ...
1
vote
1answer
2k views

CentOS 7 Install: Error populating transaction

I am having a yum issue with a CentOS 7 minimal DVD. I've spun a custom ISO based on CentOS-7-x86_64-Minimal-1503-01 and have only added a kickstart file that installs @core, sudo, rsyslog, and ...
2
votes
3answers
232 views

Why does CentOS notifies me “Login with home=/” althought home directory is created already?

Let me clarify my question. I have a CentOS 6 virtual machine, with /home directory mounted on a logical volume (formed by 2 virtual HDDs). I used this command to create a new user named user03 ...
0
votes
1answer
1k views

Is not a valid path to the kernel headers?

Host - Windows 10 VMware - 11.1.2 Guest - CentOS 7 I installed kernel-headers using yum since during the installation of vmware-tools I get a message "Searching for a valid kernel header path... ...
1
vote
0answers
39 views

Reinstaling NSS library on CentOS (Amazon AMI)

I had a problem during updating of the packages on CentOS AMI from Amazon (S3). I got a bunch of duplicated packages. Among them: nss-softokn-freebl-3.16.2.3-14.2.38.amzn1.x86_64 is a duplicate with ...
0
votes
1answer
45 views

Open Port 25 CentOS 6 with Plesk

I'm a total noob when it comes to server management. I've bought an unmanaged dedicated server. Mainly to help me learn. My email isn't working and the host support have told me I that need to open ...
0
votes
2answers
70 views

parsing using loop and assigning row numbers to file

It is a bit complicated. i have a configuration file. it looks something like this. customer="airtel" model_name=fast programmer_typ_of="dev" Now the 1st column contains all the keys and whatever ...
4
votes
1answer
3k 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 ...
1
vote
1answer
61 views

OpenVPN Server does not reply to Client ping

An OpenVPN client seems to initialize on a CentOS 7 client virtual machine. However, the response from the server is not clear when the client sends a ping. Specifically, ping 10.8.0.0 from the ...