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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Centos7 can't connect ot Internet but IP & ssh from local works

[if this is too long you can read from the bottom] Hello previously i have this Centos7 and it worked fine with the internet connection with static IP. The problem started when i installed GUI, ...
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5 views

CentOS can't see RAID array partitions

I have the current setup composed by (4x) HDDS sda, sdb, sdc, sdd partitioned in the same way: /dev/sd[abcd] | |- /dev/sd[abcd]1 [EFI FAT 32] |- /dev/sd[abcd]2 [Linux RAID] |- ...
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2answers
4k 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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1answer
85 views

Kiosk mode and auto login and single application mode in CentOS

We have a machine running CentOS 7, GDM, KDE 11 (installed from CentOS DVD) We have been struggling a few days with this issue, tried to search for a solution but unfortunately most of the ...
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1answer
14 views

Centos freezes, when trying to open crontab

I'm trying to open crontab, but when i type it the whole os just freezes... I thought, maybe that's because vim isn't installed, but it is. I also checked the cron.allow and cron.deny files, but they ...
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2answers
5k views

vmware player won't run on CentOS due to missing /dev/vmmon, what could be the problem?

So I've tried installing vmware player 3.1.4 and 3.1.3 and both times had the same problem, when I try to load a VM I get the error "Could not open /dev/vmmon". When I ls /dev/ I can see there is no ...
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2answers
2k views

Unable to use yum on CentOS 7

I have install CentOS 7 on hyper-v successfully, but when I try to update using yum update or try to install using the yum command I have the below error: Loaded plugins: fastestmirror, langpacks ...
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2answers
392 views

Ubuntu 14.04 with a CentOS 6 desktop look and feel

I'd like to install an up-to-date Ubuntu distro (14.04 LTS) at home since it is much easier to get desktop applications; however, I'm using CentOS 6 at work and I'm used to and prefer the desktop look ...
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1answer
10 views

Centos fstab how to know what filesystem to put

i have installed centos with default settings, and i'd like to partition my server securely by modifying fstab. Thing is i don't know which filesystem i should put in the fstab file to reference eg. ...
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1k views

Problem with wireless networking

I have atheros wifi hardware, intell chipset, gigabyte laptop and CentOS 5 installed. Now I try to use wireless network and get problems. First of all I want to say that I have 2 OS on my laptop, and ...
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9 views

Xen hypervisor setup | Enthusiast | Access VM on host | Sugesstions

Planning to use Xen in a small project to learn about virtualisation, and have selected CentOS as host (previous attempts with Debian failed). Would be installing Xen on a Laptop (ASUS X550LD). Is it ...
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4answers
9k views

Is it possible to put UFW on CentOS?

If so, how would I do it? If not, is there an easier way to set some basic rules on CentOS other than iptables? I'm more of an app developer and less of a sys admin.
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16 views

CentOS - Postfix rejects incoming mails

I have VPS with Centos 6 with Postfix, Exim and Dovecot. When I try to send mail from GMail to mail account from my server I receive following error in /var/log/maillog: Feb 3 13:36:29 mobilepro ...
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1answer
22 views

Error when trying to start Centos 7 installer

I am getting an error, when trying to install Centos... I wasn't able to find the log file the installer was talking about, and this is why i was forced to record with my mobile phone... Link to ...
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1answer
24 views

Use winexe and powershell to configure some service on a Windows

I'm making a script to configure SNMP on a Windows. This script had to be launched from a Centos OS. I'm quite a zero in Windows scripting so i found a PSscript on the Internet : ...
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735 views

Connection timing out when connecting to Milter service [on hold]

I'm using a VPS with CentOS 5, containing Postfix and OpenDKIM. I have set up OpenDKIM using this guide. Everything seems to work properly as the log in /var/log/maillog does not report anything other ...
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0answers
20 views

How to create a custom debian iso file from Windows step-by-step?

I'm using a Windows machine as a personal PC and I would like to know how could I customize a CentOS 6.7 iso file. In general, what I'd like to have on that specific CentOS is: a .tar archive some ...
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15 views

VPS CPU HIGH LOAD

I got new vps with 256 MB RAM, 1 CPU core. I have few test php/mysql backend scripts, which is run by cronjob. But while running,i found that cpu usage are getting high to 10, and memory fulled. ...
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1answer
45 views

http://127.0.0.1 returning 401 Unauthorized

I have a CentOS 7 box and have a service running on port 32400 (Plex Media Server) which is trying to pull some information via HTTP to http://127.0.0.1:32400/library/changestamp but a 401 response is ...
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0answers
11 views

Could not find debuginfo for main pkg: blas-3.2.1-4.el6.x86_64

I'm trying to use gdb with my code, but it's giving me an error: Missing separate debuginfos, use: debuginfo-install blas-3.2.1-4.el6.x86_64 libtool-ltdl-2.2.6-15.5.el6.x86_64 Trying to install the ...
3
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1answer
21 views

During installation of CentOS 7 what to choose for host name

I'm trying to install CentOS 7 server. During the installation what to choose for the host name? Is "server.mydomain.tld" good or do I need to choose only "server"?
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1answer
133 views

Bonded interface causes dropped packets

We're running CentOS 7.1 and have systems configured with dual NICs setup as a single bonded interface. When this bond is configured to use any of bond modes 1 5, or 6, we are seeing a substantial ...
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1answer
917 views

How to install farsi language in gnome centos

I dont find Farsi or persian language in list of languages for add to keyboard layout. How to add farsi or install it?
3
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1answer
23 views

RedHat - default gateway static route

I am trying to set static routes and I did not succeed. My situation: 2 Nics 4 ports. Eth0 + Eth1 = bond0 (Class c) Eth2 - Active (Class b) Eth3 - Not Active All traffic goes through bond0 (default ...
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27 views

Centos warewulf cluster with openmpi

I have setup a warewulf cluster on centos 7 and i have installed openmpi-x86_64-1.10.0-10.el7, additionally i also installed mpich. Wen i run mpirun with openmpi it results in the error below, the ...
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3answers
13k views

403 Forbidden on file placed at /var/www/html when attempting to download?

I am trying to copy a file from my server to my desktop computer. I placed it in /var/www/html (where the web pages are) and when I try to download it I get 403 Forbidden. I even tried chmod 777 on ...
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0answers
87 views

Installed Python 2.7, but Module in /usr/lib/python2.6/site-packages

I'm running CentOS, it already has Python2.6. I installed Python2.7 and I can see version 2.7 with python -V. I installed demjson module(pip install demjson) and then I try to execute the program. It ...
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4answers
2k views

CentOS- Can't SSH

I recently tried to SSH into my server (an internet linking ham radio node) I just got back on air. I typed ssh root@10.0.1.9 which is my computers address confirmed by ifconfig eth0 Connection ...
2
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2answers
7k views

How can I set an environment variable permanently in CentOS?

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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1answer
43 views

how to install latest ffmpeg on Centos

I want to install the latest ffmpeg 2.8.5 on the Centos server. Followed this website http://www.mysql-apache-php.com/ffmpeg-install.htm and completed the installation. But the installed ffmpeg is an ...
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0answers
299 views

How to mount NFS share in OS X Yosemite?

I have an NFS server (CentOS 6.6 at IP 192.168.1.16) that shares a folder /nfs/share. I want to mount this folder from a Mac laptop (at mount point /nfs/share). When I tried the following: sudo ...
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1answer
71 views

Tuleap git plugin

I just installed Tuleap version 8.7.99.12. on CentOS 6.7. My git version on CentOS is 1.7.12.4. In Tuleap Admin panel I installed Git Plugin 4.89 and enabled it! In my project admin section I choose ...
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1answer
55 views

CentOS 7 Minimal Installation on Hyper-V: X11 forwarding using Xming and PuTTy error, xhost: unable to open display “:0.0”

Before telling me that there are a lot of post relates to X11 forwarding error, let me put you in context of the things that I have done: I have installed the following packages: yum install -y ...
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1answer
15 views

CentOS 6 - Cpanel/WHM DNS Issues

So for some reason sslpro.xyz wont resolve yet server.sslpro.xyz and ns1/2.sslpro.xyz does. Heres my IntoDNS: intodns . com/sslpro.xyz I have root access to WHM and SSH so please guide me! This is ...
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0answers
6 views

CentOS Cpanel - Default CGI Page

I added a few files like index.php etc to /public_html using FileZilla on my VPS but it still shows the Default cgi page. Anyone have any ideas why and how I could fix this?
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1answer
4k views

domain MX record not found while installing Zimbra

I am getting this error: DNS ERROR resolving MX for localhost.localdomain It is suggested that the domain name have an MX record configured in DNS Re-Enter domain name? [Yes] named file: $ttl ...
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4answers
5k views

CentOS installing jre/jdk error

[root@jony source]# sh run.sh Error occurred during initialization of VM Could not reserve enough space for object heap Error: Could not create the Java Virtual Machine. Error: A fatal exception has ...
0
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1answer
27 views

Fully resetting MySQL

I've just spun up a CentOS 6 server. I installed mysql on it yum install mysql-server And after I started the MySQL service it spat out on STDOUT a bunch of stuff about the necessity of changing ...
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0answers
24 views

Disk-less Booting with UEFI mode?

I'm fairly new to this. I was able to successfully disk-less boot in Legacy mode. But trying to see whether I can do the same on UEFI mode; since one of my system has issue on Legacy mode. I see ...
1
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1answer
21 views

backing up Linux (CentOS) to rsync.net

I'm doing a full backup of a server using /usr/bin/rsync and it seemed to hang. The problem was that the /proc directory has a huge file -r-------- 1 root root 140737477877760 Jan 24 ...
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0answers
8 views

Firefox on CentOS with a transparent background

How to change the background of Firefox when viewing web pages on CentOS 6.3? I don't know why. After a restart, the background is back to normal white. But after running for a while, it becomes half ...
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2answers
33 views

Can't telnet into mail server

I have a machine running CentOS. From that machine I can't telnet into a mail server. From my local machine I can do the following command: telnet mailserver.com 25 From there I can't send emails ...
0
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1answer
17 views

Need Information about “Package Update Process”

When i issue the command "yum update" as root under CentOS, all updates will be installed. But what exactly happens during the update process. I am asking myself how a package gets updated. For ...
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0answers
5 views

I want to do ldap client setup on my centos 7 virtual machine.

I have done 389 server setup on my virtual machine but i want to do client side setup using tls/ssl. anyone can tell me what's the step for the same.
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3answers
8k views

Centos 7 - ping 8.8.8.8 (connect: Network is unreachable)

I think I have a routing problem. I have set up a CentOS VM, it is connected to my network and I can ping other machines. I cannot however ping anything outside of my network. [root@localhost ~]# ...
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1answer
38 views

host win10 can ping guest centos6 but centos6 cannot ping win10?

I use Wifi at home and my Virtualbox network mode is bridge adapter + promiscuous centos 6 network information is Winows10 can ping guest centos6 and I can use secureCRT to conncet to ...
0
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1answer
244 views

Squid3 Caching websites works but not for large files despite max size 6GB

For a homelab environment, I setup a Squid 3.3.8 Caching server on CentOS 7 (minimal) as a proxy server (not as the default gateway with transparent caching). With a Xubuntu client, I setup proxy ...
0
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1answer
15 views

Centos graphical installer format old disk

In the Centos graphical installer, i would like to format the whole disk and start from scratch, but it still keeps a rescue version from the previous os on the disk, how can i disable that and ...
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0answers
17 views

Docker centos container on Windows is very slow

I have Docker container on Windows machine via Docker Toolbox. I mount folder from Windows to my CentOS container and looks like it works very slow. I mount folder with this command: docker run --name ...
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24 views

Can't access certain HTTPS sites on Firefox 3.6

I have an old box that has been running for many many years, and has been functioning as a monitoring box (i.e there are a load of tv's connected to it, and on those, there are many web pages showing ...