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

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Saving log files in the user account /home/user when hosting mutliple sites

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 ...
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125 views

Problem Creating a tun interfcae with SoftEther VPN Client on CentOS

I'm trying to make a VPN connection using SoftEther VPN Client on CentOS 7. When I try to create a new NIC, I get this error: VPN Client>NicCreate NicCreate command - Create New Virtual Network ...
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35 views

User Mode Linux - running CentOS - recommended FS & Kernel combination

I'm trying to run CentOS6 in "User Mode Linux" - i.e., virtualization without root privileges. It can be either 32 bits or 64 bits - whatever works right. The UML kernel is distributed seperately from ...
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38 views

kickstart does not chmod a file in %post section

I have the following code executed in the %post section of a kickstart file for RHEL 6.6. echo '#!/bin/sh' > /root/add_user echo 'if [ $# -lt 1 ]; then echo "no username provided"; exit 1; fi' ...
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47 views

HAproxy wont see Apache after uninstall Nginx, why?

I have a website I need to mount and I'm doing so with an HAproxy as load balancer, 3 webservers, 1 memcached, another HAproxy and a mysql galera cluster with 3 servers. All in CentOS 7. Anyway I ...
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374 views

How to install WiFi driver in CentOS 7 on notebook Lenovo Z570

I'm newbie in CentOS. After installing (7) I can't get to work WiFi on my notebook (Lenvov Z570). Also I installed latest drivers by instruction Below diagnostic output: rfkill: [nikolay@lenovo ...
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56 views

Zpanel Not Showing Anything in Admin Screen / Reinstall / Repair Required

I was trying to update zpanel repository so ran few commands including zppy update zppy update zgodx and after that my zpanel admin area shows nothing , it's empty, no modules show, if I try to ...
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48 views

Gpgpu-sim dependencies in centOS

I try to install gpgpu-sim in my CentOS 6, there are some dependencies need to be installed before I can compile gpgpu-sim successfully. the dependencies are as follows: GPGPU-Sim dependencies: ...
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33 views

File permission issue with web server

Our project files is hosted in Linux server using root user, i tried find the user for Apache/PHP, here is what i got by running ps aux | egrep '(apache|httpd)' [root@server tmp]# ps aux | egrep ...
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38 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 ...
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143 views

Centos 7 Slow Resolve

After installing Centos 7, I noticed that DNS lookups for addresses saved in /etc/hosts take long time, here is example: time curl -X get http://localhost real 0m0.159s user 0m0.004s sys ...
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49 views

Speed issue in copying files from one host to another

I have at home two centos boxes: Box A - centos 6.4. gui version Box B - centos 7.1. minimal version. They are connected to 100Mb router (both boxes have 100Mb network adapters). Box B has software ...
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218 views

Getting Error in Dependency Resolution during installing vlc media player on centos7?

I was trying to install vlc on centos7 using yum install vlc as root user, But didn't succeed. I think previously I install wrong repository. I am getting following error. Following is only part ...
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19 views

Add Disk Google Cloud

Sorry by my english. I have this situation: 1.create a instance, in google, this load with 10GB. 2.add (in google cloud) a disk persistent with 200Gb I need save all my websites in the disk ...
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211 views

CentOS 6.6 network connection problem always breaks down

I installed centos 6.6 about a week ago. Then I set my IP to static and it works but after several hours I always lost connection. I can ping another computer in that network but I cant ping my centos ...
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59 views

Centos 6 and postfix: Internal emails deferred / telnet timed out from SSH

The problem is, that I have a VPS with centOS 6 installed, and I can send emails to anyone, but my own exchange server, Apr 29 11:50:30 amazonnet postfix/smtp[16535]: 2B6FF3CC49A: to=, ...
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77 views

Shutdown init script is not executing on immediate reboot on CentOS 7.1

I have installed an init script to run on system shutdown with the following command /sbin/chkconfig --add shutdownExample My shutdownExample(custom script to run at system shutdown) looks like ...
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23 views

How to convert Fedora rpm file to Centos7 rpm

I new in Linux and specific in installation of rpm files I have src.rpm file rt-4.2.10-2.fc21.src.rpm (fc21 is meant for fedora) and wanna install this file on Centos 7 . How can do it and if source ...
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83 views

Unable to access localhost in Oracle VM (CentOs[Guest]) from Windows7(Host)

I'm trying to access the localhost in VM from Windows 7 64bit(Host OS), but unfortunately getting "Not Found" Http Error 404. I'm able to login to VM using Putty. Below are the work environment ...
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24 views

“iptables -L” isn't showing a rule I just added

I have issue with iptables it's not listing any newly added IPs. I tried both: iptables -A INPUT -s 188.143.232.15 -j DROP and iptables -I INPUT -s 188.143.232.15 -j DROP and service iptables ...
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55 views

centos 7 installation with customized bridge module

I have installed latest Centos 7 x64 edition in my server. I need to modify the linux-bridge module with some customized changes and use it as a default bridge module. Currently I am building centos ...
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169 views

Centos 6.6 unrecognized services during boot rsyslogd / iscsid / iscsi / mcstrans / syslog / yum-updatesd / rhnsd

Could anyone explain what is going on here, the server used to boot fine without errors and now all of a sudden services cannot be found anymore? When researching any of these errors I get no ...
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82 views

Fail2Ban: Sending Mails with CentOS 7 using postfix

I am seeking advise on how to get Fail2Ban installed and configured on CentOS7 using firewalld and postfix for sending reports. I am not in need and even don't want having a fully featured mail server ...
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78 views

CentOS 7: write failed: broken pipe when trying to reboot

Commands I've tried: sudo reboot sudo systemctl reboot Both commands just ask for my password for sudo then write: Write failed: Broken pipe Then they close the SSH connection and I can ...
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29 views

installing r8168 driver in centos 4.8

I have installed cent os 4.8 and I am not able to connect to internet from that system. After searching on the net I found that the system has r8169 driver instead of r8168. Now I am trying to ...
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46 views

SELinux context on CentOS 7

I installed CentOS 7 on my server and tried to deploy phpBB. I realized that SELinux was on when the directories were 'Unwritable'. I setenforce to 0 and completed the installation. However I'd like ...
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81 views

How to Install Oracle iPlanet Web Server on CentOS 7?

System: CentOS 7.1 64bit Programe: Oracle iPlanet Web Server 7.0.15 64bit for Linux The java related components have been installed when I use the command 'yum install java'. Such as ...
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33 views

Bro-IDS CSV conversion

I have Bro-IDS currently operating under Centos 7. I need to convert the output to CSV format. The documentation that I have seen on this is not clear to me. Has anyone done this successfully? I have ...
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61 views

Error loading libQtDBus.so.4 while installing skype 4.3 in CentOS 7 64Bit

I have tried to install Skype 4.3 in CentOS 7 64Bit. But its giving library error like Requires libQtDBus.so.4. Please Suggest me how can I get rid of this problem?
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27 views

check media resolution if resolution is big ffmpeg it, if output is smaller than original delete the original else delete the output

I have my storage VPS filled with videos, and hoping I can free up some space, their resolution is pretty big so I decided to re encode them with ffmpeg to a smaller resolution, I am doing every thing ...
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306 views

CentOS 7: Can't connect wifi using wpa_supplicant

I recently got a new wireless card, specifically Intel Dual Band Wireless-AC 7260 WiFi Bluetooth Half Mini Card. Previously I had been connecting with ethernet so this machine has never been on the ...
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53 views

How to benchmark performance and ensure high-availability in a CentOS 7 cluster?

To give you a little context on my question, I'd like to mention that I am writing an essay on high performance and high availability clusters using a 2-node (I know that is not optimal, but it's what ...
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82 views

haproxy removing mod_expires set by apache

I've haproxy server which is routing requests to different web service instance based on rules. The web service instances have apache running at port 80. Now, I'm trying to set some expiry header by ...
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58 views

Centos 6-7 install argument for GUID Partition Table

From here http://www.tecmint.com/centos-7-installation/ item 11 NOTE:For those users, who have hard-disks more than 2TB in size, the installer automatically will convert partition table to GPT, ...
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173 views

How to fix: /usr/lib64/libstdc++.so.6: version `GLIBCXX_3.4.15' not found

I need to install doctotext hence in the base directory, I run doctotext.sh and I got the following error (./doctotext: /usr/lib64/libstdc++.so.6: version 'GLIBCXX_3.4.15' not found). When I did ...
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1k views

mount exFAT HDD on CentOS 7

I'm running CentOS 7 on my server. I can't yum install fuse-exfat exfat-utils so I installed exfat-utils 1.0.1-1.el7.nux and fuse-exfat 1.0.1-1.el7.nux via RPM. I have a WD Green hard disk, which is ...
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84 views

How to install rpm

I have CentOS-6 and rpm and yum installed on it. The problem is that I had make utility on my system, but somehow it got uninstalled. Now, i want to install make with 'yum install', then I get ...
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45 views

Moving Informatica data(directories) from one unix server to another unix server

Can we migrate directories from one unix server to another unix server, without the need of installation of Informatica softwares on the new unix server? If yes, then will there be any change in the ...
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191 views

CentOS 7 /var/log/messages

We have a CentOS 7 (3.10.0-229.1.2.el7.x86_64) server running as our main file share server. We randomly see the following error messages showing up in our /var/log/messages and have been trying to ...
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70 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 ...
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34 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 ...
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127 views

Dovecot ACL config for read-only user mail folders (CentOS 6)

I'm using Dovecot as an IMAP server. It's the latest version from source installed to /opt. Dovecot -n output: # 2.2.16: /opt/dovecot/etc/dovecot/dovecot.conf # OS: Linux 2.6.32-504.12.2.el6.x86_64 ...
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50 views

Rsyslog logs retransmitted after log rotation

I have config setup on all my CentOS servers to forward all syslog messages to a Graylog server via rsyslog. In Graylog I have then configured streams to alert on the occurrence of certain message ...
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124 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 ...
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170 views

Why does PostgreSQL 9.4 on CentOS7 not run via the `systemd` service file on boot?

As root, if I change to the postgres user with su -l postgres then run /usr/pgsql-9.4/bin/pg_ctl start -D ${PGDATA} -s -w -t 300, PostgreSQL starts successfully. As root, if I run systemctl start ...
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41 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 ...
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34 views

Trigger a graphic window during kickstart

I have built some custom centOS instalaltion CD with the help of anaconda and kickstart, nothing really exciting here, everything is working fine, packet are installed, pre and post installation ...
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16 views

How can I maximise Netbeans window from the terminal?

I am on CentOS 6 and using VNCViewer to remote in to a box which has four monitors. The problem is VNCViewer won't allow me to click on the Netbeans Window "Maximise" square, top-right, so I can ...
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284 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 ...
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52 views

Control TCP Connections in Python

For my college project I am trying to develop a python based traffic generator.I have created 2 CentOS machines on vmware and I am using 1 as my client and 1 as my server machine. I have used IP ...