CentOS stands for Community ENTerprise Operating System, the most popular Linux distribution for web servers with almost 30% of all servers using it. Third-party software is not included in the base.

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CENTOS 7 File Browser missing tree and settings

OS: CENTOS 7 with GNOME 3 GUI CENTOS 6.5 offered a File Explorer applet that allowed for the ability to save settings (make list view the default, and save tree view as opposed to Places.). I do not ...
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centos 7: control idle (screen blanking) time?

OS: CENTOS 7 / Gnome 3 GUI How do I the time that must elapse until the OS thinks that the computer is idle and blanks out the screen? I am aware of the new Settings | Privacy | Screen Lock feature, ...
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6 views

HHVM 3.1.0 seems to crashes when under load

On CentOS 6.5 server I'm getting HHVM dead but subsys locked after HHVM going under load. Below is my config file ; from ...
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18 views

kernel source error on dahdi installation in centos

Trying to install dahdi from the link. I have downloaded package for dahdi. But on doing cd /usr/src/dahdi-linux-complete* make && make install && make config My terminal shows ...
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9 views

How to connect to VirtualBox CentOS VM via FTP?

I am wondering how I can connect to my virtual centos server in VirtualBox VIA FTP so that I can upload and grab files. I dont really want to setup shared folders. Thanks
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63 views

CentOS 7 DVD ISO vs Everything ISO different [on hold]

What is different between CentOS 7 DVD ISO and Everything ISO in http://centos.org/download/ ? CentOS 7 DVD ISO 3.86 GB Everything ISO 6.58 GB
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63 views

Add windows partition to grub2 boot loader in centos 7

I had windows 7 installed on my laptop. Then I installed centos7. Installation completed successfully, but when I reboot I can see only centos and centos recovery. I did not see windows partition. ...
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25 views

Router cannot separate ip addresses on the same NIC (Vmware)

Here is the scenario of my problem. My network topology: I have an ISP Router Technicolor TG797n v3 and i have a wireless access point set to be a client mode and connected to my PC via Ethernet so ...
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10 views

GRUB 1.99 CentOS 7

I just added CentOS 7 to an existing Ubuntu system (using GRUB 1.99). When I do a grub-mkconfig -o /boot/grub/grub.cfg, it detects the CentOS, and adds two entries (one looks like normal, one like ...
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16 views

VirtualBox “Bridged Adapter” network doesn't show up in VM

ong story short, I'm trying to re-route information from an Android tablet into a CentOS VM on my Windows 7 host. I've set my Virtual Box manager to have two "Network" adapters (in Settings): ...
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18 views

I'm having an issue with all postfix mail being rejected with “relay access denied” - Centos 6.5, postfix 2.6.6

If I use smtpd_recipient_restrictions, everything gets rejected with "relay access denied". If I use smtpd_relay_restrictions, everything gets through and ignores the whitelist. Not sure what's up; ...
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33 views

Install tuleap on amazon ec2 linux AMI

I'd like to know if it's possible to install tuleap on amazon ec2 linux ami. I searched the net unsuccessfully and when I try to install tuleap with yum, I get conflict errors (with httpd24, ...
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28 views

If my firewall is switched off,what else could be blocking access to mysql?

I want to have remote access to my mysql server but when i telnet my server from my computer i get this C:\Users\USER>telnet 197.000.0.00 3306 Connecting To 197.000.0.00...Could not open ...
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4 views

CentOS 5.5 Hibernation issue

I use CentOS 5.5 on lenovo Desktop. The issue is it goes into hibernation even if I set the Power Options to never go into hibernation. This is very annoying. I don't want my machine to go to ...
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25 views

Mysql listens to all yet remote connections not possible

I am running this command on Centos netstat -an|grep 3306 | grep LISTEN and it gives me tcp 0 0 0.0.0.0:3306 0.0.0.0:* LISTEN yet when I try to connect to ...
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14 views

Cannot start any virtual machine from VM Player

I am using a Desktop PC with Windows 7 as Operating system. I am using VM PLayer to run a CentOS for me. I am going to use CentOS to setup an Asterisk environment for me so I can conduct studies on ...
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1answer
9 views

Why isn't apache following my symbolic links?

I need to link to a directory from /var/www/html to a directory within the home directory of a non-su user. The operating is CENTos, the server is apache. The config file for the directory is ...
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29 views

rm -rf * results in “Killed”

I used PHP to generate about 4,000,000 files in a directory (f/) because I was bored. When I cd .. and use rm -rf f, it simply returns "Killed" about half a second later and does not delete the ...
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2answers
23 views

CentOS. Set environment variable permanently

I used a following commmand in SSH terminal on my server: export LD_LIBRARY_PATH=/lib:/usr/lib:/usr/local/lib and it works fine: my program finds all libraries at this point (if I launch it from my ...
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53 views

iptables not starting on CentOS 6

I am running CentOS release 6.5 (Final) and cannot figure out why my iptables is not starting. I may have executed some other command to permanently prevent the start up of iptables; I do not ...
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6 views

LINUX: Audio over DVI through a Geforce 295 GTX

I just installed CentOS7 on a frankenserver I made and I can't get audio over DVI. I have used this exact cable/hdmi-dvi-adapter/tv setup on my windows computer with a Geforce 480 gtx and it worked ...
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32 views

Play mp3 sound files in asterisk

I have installed asterisk on my centos system but asterisk only supports wav,gsm but not mp3 .how can i play mp3 sound file in asterisk I have searched a bit and found that to play mp3 we have to ...
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43 views

IPtables keeps resetting rules and blocking almost everything

Every time I reset IPtables, the rules keep coming back in about 10 minutes, blocking everything besides port 22 and 80. When I do a "iptables-save", I see this I can't find out where it's coming ...
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22 views

Trying to give a user permissions to all folders on centos

I'm trying to give my user on my server permissions to access any folders on the server under the directory /. I've blocked logging in as root to secure against bruteforce attacks so I made a user ...
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25 views

Cent OS 6 - Do I need to restart a service after updating .ssh/known_hosts

After updating my .ssh/known_hosts file do I need to restart a service? I tried service ssh restart but it gives ssh: unrecognized service.
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59 views

Can't access CentOS in VirtualBox

I have a CentOS installed in VirtualBox. I have a web server running within it but for some reason I can't seem to be able to access it from outside. The Ip address reported from CentOS is: ...
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85 views

Desktop not starting after Centos upgrade

I upgraded a server from centos 6.5 (with gnome2) to 7 using the update manager. The problem is that I am not able to see the login screen or the desktop. However the mouse pointer is visible. I ...
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9 views

After adding FORWARD NAT rules, cannot connect system eth0

I was trying to make bridge connection between wlan and eth on Centos.. I made Forward and NAT rules and then something wrong with System eth0 connection. It does not connect anymore.. Could you ...
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30 views

Load CentOS in RAM memory

I know there are many distros out there that boot linux into RAM memory, one such is Puppy Linux. However, I have CentOS 6 and I don't want to download puppy Linux or any other distros. My goal is to ...
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14 views

how to read file from different directory through jsp in centos

i am on centos 6 and created a jsp project on the directory /root/NetBeans/MyProject/ and my jsp page is on /root/NetBeans/MyProject/web/mypage.jsp My problem is that i want to access a sound file ...
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69 views

Samba CentOS 6.5 cannot connect to the shared folder

The problem is that I added samba user 'root' via 'smbpasswd -a root'. Then I edited '/etc/samba/smb.conf' and added there: [shared_folder] valid users = root public = no path = /tmp printable = no ...
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65 views

CentOS 7 minimal install can't detect ethernet

I recently installed CentOS 7 on my desktop computer and decided on the minimal install. It couldn't find a network device in the installation process, but I went ahead and installed it anyway. ...
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27 views

Split & burn ISO of more than 20 gb to multiple DVDs

I have customized a CentOS distro with custom packages but now I have issues related to its distribution since its size is around 24GB! i.e.: I want to split my large ISO in multiple small ISOs so ...
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16 views

Barnyard - Database Warning

I installed snort and barnyard. When I start snort and barnyard services, barnyard could read snort.log file but it doesn't write to mysql database. So I run tail -100 /var/log/messages and I ...
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1answer
58 views

How to ping by hostname on CentOS

I have 2 PCs running CentOS 7 and they're both connected to a wireless repeater/AP. I have statically set both the IP addresses of the 2 PCs, and they are able to ping each other via IP. I have also ...
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Windows VM is resetting file permissions on CentOS host

I have a CentOS host machine with a Windows 7 virtual machine in VMware. There is a shared drive on the host machine (NFS share with other machines on the network) which has been configured with ACLs ...
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65 views

How to configre network card on centos?

I have a fresh install of Centos on a machine with two NICs, one built-in and another one installed in PCI slot. However in the network settings I get one shown as wired connection picking up IP from ...
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50 views

Snort unified log - empty file

I installed snort and configured snort.conf file. Snort is catching packets but not logging. =============================================================================== Memory usage summary: ...
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44 views

Centos 7 poor download speed from internet

I'm currently in the process of setting up a home server using centos 7, everything is working perfectly except downloading from outside my network (ie yum updates, wget, speed test). Internally i ...
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31 views

Barnyard Service - MySQL Error

I installed barnyard2 and saved as a service. When I run service barnyard2 start, Barnyard2 is failed. After I run tail -100 /var/log/messages and I encounter a fault like this. ERROR database: ...
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108 views

Ansible on CentOS 6.5 throws OSError: [Errno 2] No such file or directory

My Ansible install on CentOS 6.5 throws OSError: [Errno 2] No such file or directory [batandwa@localhost ansible]$ ansible-playbook -i hosts main.yml -v [WARNING]: The version of gmp you have ...
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1answer
28 views

What is the best way to create RAID 1?

I'm looking for a way to create the RAID 1 array without losing my data on CentOS. Here's my situation: I've got a web server running on CentOS. There is one VG partition with few LV volumes. I bought ...
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109 views

Can't start mariadb in centos 7

in the systemctl status it shows: systemctl status mariadb.service mariadb.service - MariaDB database server Loaded: loaded (/usr/lib/systemd/system/mariadb.service; enabled) Active: failed ...
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29 views

USB headset doesn't connect automatically when plugged-in in CentOS 6.5

The USB headsets are not automatically selected when plugged-out and back in, it must be manually done each time. So far, I have tried to modify /etc/pulse/default.pa to include a module I have ...
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1answer
25 views

Software installation script says “loopback not defined in ifconfig”

I'm trying to install a software by IBM in CentOS 7 and the installation script does a few environment checkings to make sure everything is working. The script is saying that "loopback not defined in ...
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Xen reports that “Host does not support virtualization type 'hvm'”

[root@www www]# cat /proc/cpuinfo processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 23 model name : Pentium(R) Dual-Core CPU E5500 @ 2.80GHz stepping : 10 cpu MHz ...
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130 views

Can't install MySQL in CentOS 6.5

When I try to install MySQL in CentOS 6.5 it gives me this error: Error: Multilib version problems found. This often means that the root cause is something else and multilib version checking is ...
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43 views

Install old version php on Centos

I have troubles with php + mongodb After redeploying project, php throw 500 because "Can't canonicalize query: BadValue $in needs an array" (https://jira.mongodb.org/browse/PHP-1051) I install same ...
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1answer
34 views

Is it possible to install Ubuntu from within CentOS 7 VPS?

My VPS hosting provider's panel is bugged, and I'm stuck with CentOS 7, can't re-image to another linux distro (contacting support hasn't been successful, they tell me it's fixed and close my ticket, ...
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82 views

Setup PHP from source and mod_fgcid on CentOS 6, getting permission denied

I have compiled PHP from source and installed it to /opt/php/5.5.15/ I have also installed (with yum) httpd, and mod_fcgid. I am trying to configure a virtual host to exec php like this: ...