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

learn more… | top users | synonyms (2)

0
votes
1answer
57 views

Installed OS on EFI system crashes on grub shell

I have installed an el6 based custom OS on an e-mmc drive. This machine doesn't have legacy boot mode, only EFI. The installed OS has grub-0.97-77.el6.x86_64.rpm. Using a rescue disk I can see that ...
3
votes
1answer
42 views

Can I enable cephx authentication using a pool in qemu/kvm?

(CentOS 7, Ceph Incunabulus, everything patched up to date) Background I've got a working converged Ceph/qemu/kvm cluster with cephx enabled for authentication. I'm trying to use this to store block ...
1
vote
1answer
28 views

Can't set the locale (man-db.cron)

Everyday I am receiving an email with the following content /etc/cron.daily/man-db.cron: mandb: can't set the locale; make sure $LC_* and $LANG are correct When I check the results of of ...
0
votes
0answers
81 views

CentOS 7 blurry, fuzzy screen

I just installed CentOS 7 to Dell Optiplex 780 and I have problem with display. I am using two screens and they are quite blurry, fuzzy. You can see the problem (look at the terminal) - ...
1
vote
0answers
38 views

PHP app crashes: child pid exits with Illegal instruction (4)

I have a CentOS 6 server with Apache and PHP. I run some application and can constantly reproduce this crash. After some sequential action the app dies and the only trace I found is the following ...
0
votes
3answers
43 views

What is the opposite of yum provides?

yum provides <command> tells you what package provides, for instance, /usr/bin/python. But how do I find out what commands are provided by a certain package?
2
votes
1answer
334 views

php 7 install throws “Cannot load Zend OPcache - it was already loaded” error

I am using salt to provision my servers, and I just tried to upgrade to php 7 and although everything is installing correctly, anytime I run php -v or run any php anything it throw this at the head of ...
3
votes
1answer
80 views

Wget and curl can work normally, but ping fails

When I ping www.google.com and 8.8.8.8, I get no reply: # ping www.google.com PING www.google.com (216.58.221.228) 56(84) bytes of data. ( no response) # ping 8.8.8.8 PING 8.8.8.8 (8.8.8.8) 56(84) ...
0
votes
0answers
65 views

Installing qemu-kvm 2.5 on Centos 7

Are there any repos out there that carry the most up-to-date version of qemu-kvm as well as dependencies? I ask because the newest qemu-system has a HUGE list of dependencies and I would like to not ...
0
votes
0answers
15 views

Centos 7 i686 Log entries

It appears that my system has a built in bootable recovery image that appears when it doesn't boot to windows and it presents it self as a SMI USB drive. Linux is picking this up as SDE which doesn't ...
0
votes
0answers
34 views

TLSv1.2 support in CentOS 5.8

Right now I can't access HTTPS site from PhantomJS headless WebKit browser because of TLSv1.2 In my CentOS 5.8 I have following OpenSSL 0.9.8e-fips-rhel5 01 Jul 2008 verison installed. I think I ...
1
vote
0answers
18 views

Detect ad blockers add-ons/extension on CentOS 5.8 [closed]

In continue to this question http://stackoverflow.com/questions/34567812/phantomjs-centos-5-8-unable-to-render-the-page/34587524#34587524 I'd like to detect any ad blockers add-ons/extension installed ...
0
votes
0answers
28 views

Why can't I install CentOS 7 in dual bot wth Winows 8.1?

I'm getting crazy with this OS :'( I want immediately say that I'm sorry for my English, I hope I can explain myself well. Please let me just explain few things: I need to build something under ...
1
vote
2answers
88 views

Centos 7 - ssh-keygen is not generating keys

sshd service doesn't start due to missing keys. When I try to generate the keys using ssh-keygen -t dsa I just get message saying: Generating public/private dsa key pair. I don't get prompt to ...
0
votes
0answers
86 views

CentOS update from 7.1 to 7.2 with 2.6 OpenVZ kernel?

We are using CentOS 7.1: $ cat /etc/redhat-release CentOS Linux release 7.1.1503 (Core) We deferred the 7.2 upgrade. It looks like it did not cause any problems so we are planning an upgrade. The ...
0
votes
1answer
35 views

How to install man pages on centos? [duplicate]

After an install of centos 7, I can't acces man pages : # man ls -bash: man: command not found I tried to install it via yum # yum install man-pages ... ok But again: # man ls -bash: man: ...
0
votes
0answers
126 views

Error getting repository data for epel, repository not found

I have installed the newest epel and want to install mod_evasive rpm -Uvh http://download.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm Uname -a: Linux #1 SMP Fri Nov 22 ...
1
vote
0answers
27 views

Identifying disk drives during RHEL/CentOS/Fedora Installation

What steps are followed in order to identify a connected disk drive during Linux installation ? I am interested RHEL/CentOS/Fedora procedures. Is it entirely depends on the Kernel package and drivers ...
0
votes
1answer
22 views

NGINX not running as configured user

This is not a Joomla issue per se as I think it is more of a permissions issue related to NGINX. This was encountered while trying to set up Joomla. Read below but after testing I think this is more ...
0
votes
0answers
13 views

Aardvark Control Center wants TLS/SSE2 Library

Environment: CentOS 7.1 64-bit using Intel i7-4771 Gnome 3 shell I downloaded the Aardvark Control Center (Total Phase) and tried to execute the controlctr bash file, however I received the error ...
1
vote
1answer
56 views

How do I get a service on a remote CentOS 7 server to persist after I log out?

I am experimenting with running Spring Boot apps on a remote CentOS 7 web server which has been successfully serving up apps on Apache and a stand-alone tomcat instance since day one. However, when I ...
0
votes
2answers
36 views

Unable to connect remotely to custom application

I've built an application that listens on the localhost address and a specific port, lets say port 11001. Its on a remote machine with CentOS. I currently have a python script on my local machine that ...
2
votes
3answers
163 views

Why does a yum package update replaces my yum-cron config files?

Usually, when applying package updates via yum update, rpm is 'intelligent' enough to respect my changes to configuration files under /etc. (It basically looks at the mtime, compares it and depending ...
0
votes
0answers
21 views

Lots of strange disappearing connections to my Centos7 host

I run my website on a Centos7 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', ...
0
votes
2answers
25 views

Network Configration on Virtual machine

I am creating a Linux environment for learning purpose. I just installed ubuntu for base OS, and I installed centos(minimal) in Virtual box. My goal is to access the centos from ubuntu by Putty. ...
0
votes
2answers
41 views

No network capabilities in CentOS

I've just download and installed the latest version of CentOS inside a VirtualBox VM. Installation went OK, but when I start the VM and log in, if I try and ping anything I get an error due to lack of ...
1
vote
1answer
70 views

Could not find libjava.so

So I'm trying to install and run the jdk/jre on linux to run app project compilation/signing/etc. actions from the command-line. To install, I used the following command: yum install ...
1
vote
0answers
37 views

problem while using “ yum groups ”

When i am trying to use yum groups commands in RHEL 7 it is giving me following output. #yum groups list There is no installed groups file. Maybe run: yum groups mark convert (see man yum) I have ...
0
votes
0answers
52 views

Having problems with make and opencv

I'm trying to build opencv for my x86_64 Centos 6 operating system. I think the problem is make is trying to use the 32 bit version of the bz2 library instead of the 64 bit version. I get this ...
-4
votes
1answer
101 views

How do I install Supervisor on CentOS? [closed]

I have zero-knowledge of Linux. I always found the interface where I get to click things with a mouse curser to be easier for me than black-windows with a lot of text-lines (at least that's my vision ...
1
vote
1answer
25 views

rsync exclude directory not working, when also scanning for only *.php files

Im trying to rsync all the .PHP and .HTML files from any directory inside of /home/ . However in /home/site2/public_html/cache_old/ there are .html files that i do not want to include in the sync ...
0
votes
1answer
17 views

Upgrading Java on CentOS

I'm currently working on a production server, and I can't get my Java program to be executed on it because of an incompatibility between the versions. Java 7 is installed on the server, while the ...
3
votes
2answers
96 views

No /dev/mmcblk0 during boot

I am trying to install CentOS-6 on an eMMC drive. Since the supported 2.6.xx kernel from CentOS-6 doesn't support mmc, I compiled a newer kernel (4.2.6) which has updated mmc drivers. I tried booting ...
0
votes
1answer
96 views

How do I mount the /dev/sda partition from CentOS-7-x86_64-Minimal-1511.iso?

I need some help figuring out how to mount partition 1 (xfs, boot) of the /dev/sda device from CentOS-7-x86_64-Minimal-1511.iso on a CentOS Linux release 7.2.1511 (Core) VM. There are multiple devices ...
1
vote
1answer
72 views

CentOS 7 Encrypt a PDF

I've recently upgraded our server from CentOS 6 to CentOS 7 and I am having issues getting pdf encryption working on it. On CentOS 6 I installed libgcj and then the pdftk package. I could then ...
0
votes
0answers
26 views

Prune yum of stale installed packages/duplicate gcc packages after manual install

I'm in a weird situation, and maybe I've messed something up and just need to hit the reset button and re-install CentOS. Off a fresh install of CentOS7.1 the other day, I noticed the latest version ...
1
vote
1answer
61 views

yum install overwrite manual installation

Note: I barely know what I'm doing here, as such this may be incredibly obvious, but I wasn't able to find what I was after on Google. Running CentOS 6.7 Yesterday I followed this guide to set up ...
2
votes
0answers
43 views

Lost space in LVM

LVM Hey. First of all I want to say excuse me for my bad English. I a problem after installing CentOS 7 with LVM. Some space lost after problem with LVM configuration. I tried to add some logical ...
0
votes
0answers
33 views

PHP-FPM Permission denied on folders

I get read/write errors on a new CentOS + Nginx + PHP-FPM server, this is muy configuration Nginx user nginx; [...] fastcgi_pass 127.0.0.1:9000; PHP-FPM user = nginx group = nginx listen = ...
0
votes
1answer
17 views

Only One Resolver ip

so i was trying to setup Cpanel and i got this problem it asked me for a Secondary Resolver which i don't have i tried getting my ip resolver by typing cat /etc/resolv.conf in centos and it gave me ...
-1
votes
1answer
66 views

bash - sed: -e expression #1, char 15: unterminated `s' command

I try to use sed command inside a loop to replace IP address, but it is always giving me this error: sed: -e expression #1, char 15: unterminateds' command` even it is not missing the end slash. ...
-1
votes
4answers
83 views

Command not Found in centos 6

i am new to linux and learning it . while installing gambas application i face problem .. sudo add-apt-repository ppa:gambas-team/gambas-daily sudo apt-get update sudo apt-get install gambas3 ...
2
votes
0answers
71 views

installing dsc30 - python 2.6 fights back

Im trying to upgrade some systems to Cassandra 3.x. The installer want Python(abi) >= 2.7 so I installed it. Still seeing this error: Resolving Dependencies --> Running transaction check ---> ...
0
votes
0answers
49 views

Unable to install yum on cpanel server

I recently signed up on godaddy and have a user account on cpanel I can successfully use ssh to login to my server this is my operating system details when i use uname -a Linux ...
2
votes
1answer
34 views

Is it possible to have a daemon run a process as another user WITHOUT having a superuser daemon?

I'm working on a project at the moment where I have a daemon that needs to run a process as another user. I would like the daemon to not run as root if possible. However, i'm struggling to figure out ...
1
vote
1answer
68 views

Yum problem on Centos 6.7

I have installed php, mysql, httpd on my vps. But when I try upgrade php via yum I get the following error. [root@ns1 home]# yum --enablerepo=remi update php Package(s) php available, but not ...
0
votes
1answer
21 views

Error while Installing centos 6.7 alongside windows 7

I am havind almost 50 gb free space in hard disk. But while partitioning its shows that "could not allocate requested partitions : no partition slots in sda". I made free space by shrinking my current ...
0
votes
1answer
111 views

Installing Dependency for epel from yum update on Centos 6.5

I think that I'm not quite understanding where epel repo reads dependency for a python update. For example when I run sudo yum update I get the below and then successfully run pip install requests and ...
2
votes
1answer
116 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 ...
3
votes
2answers
82 views

Avoid CentOS 7 upgrade via yum?

I help manage a small production server. The server runs a downlevel version of CentOS. CentOS recently announced Release for CentOS Linux 7 (1511) on x86_64. Running yum update picked up the release ...