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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1answer
179 views

RPM install add yum repository

Is it possible to add a yum repository as part of the Requires field on an RPM spec file? For instance: Requires: my_custom.repo, software.xyz (only available in my_custom.repo) If not what is the ...
1
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2answers
814 views

How can I bring up up a non-boot (ONBOOT=no) network interface with iproute2?

Have a network interface that does not come up on boot-up: [belminf@tito ~]$ grep ONBOOT /etc/sysconfig/network-scripts/ifcfg-enp0s3 ONBOOT=no I know I could do the following for DHCP: [belminf@...
0
votes
2answers
921 views

Is it ok to install CentOS rpm in fedora?

I want to try gitlab community edition in my fedora laptop. From the downloads page, it has binary packages for Ubuntu and CentOS 6 and CentOS 7. Which one should I be installing in fedora(release 21) ...
4
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2answers
101 views

Can I mount a case-insensitive tmpfs/ramfs?

I would like to utilize the performance of tmpfs/ramfs for some file operations, but the programs/processes that use these files assume a case-insensitive file system. I cannot find any documentation ...
2
votes
1answer
241 views

Clustered NFS server reply ERR 24: Auth Bogus Credentials (seal broken)

I have 4 servers on the VirtualBox. Two of the servers are a CentOS 7 cluster with Pacemaker(corosync), and they have an NFSv4 server in Active/Passive mode. There are also 2 clients with CentOS 6, ...
0
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1answer
94 views

Are there any drawbacks to running a GUI on a CentOS server?

I need to build several CentOS 6.6 servers, mostly into web servers and a couple of mail servers. Are there any disadvantages to running a GUI environment as opposed to having no X11 at all? I'm ...
2
votes
3answers
128 views

Can system time be paused?

This may or may not be the right approach, but it's feasibility was requested of me: We have a demo server that we update from time to time in order to keep the statistical calculations up-to-date. ...
0
votes
1answer
84 views

seeking hints for correct escaping of sed commands WITHIN yaml

I am having a hard time finding the issue why following lines of "code" break my cloud-init config. Basically I am calling a son object as part of the DigitalOcean API which has a YAML format - I got ...
1
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2answers
452 views

why nginx holds file descriptions of logs?

on Red Hat Enterprise Linux Server release 6.6 (Santiago) nginx version: nginx/1.0.15 I use common nginx logrotate config, logrotate works fine and nginx creates new log file like access.log or error....
1
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1answer
77 views

Rebooting Centos Servers configured with MYSQL Master/Slave Replication

Sometime ago we configured MYSQL replication on our main web server to another CentOS 6 server. All is working perfectly and we can see the replication is working fine. My question is how to safely ...
0
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0answers
210 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, ...
0
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1answer
1k views

PHP 5.4 ON CENTOS 7 , NGINX , page not found error

I am trying to install PHP 5.4 on CentOS 7 currently , my conf files look like the following : /etc/nginx/conf.d server { listen 80; server_name 178.62.255.79; root /usr/share/nginx/...
1
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0answers
50 views

iptables not getting saved ? centos

I am trying to save the iptables, when I run command #service iptables save it says [ok] but when I again open the iptables the rules get revert to default. Can anyone help me to understand this ?...
0
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0answers
5k 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 ...
3
votes
1answer
679 views

Kickstart file - installer is ignoring some of the “do not install” packages from the packages section

When I use the kickstat file on CentOS 7.0, the installer seems to be ignoring some of the "do not install" packages in the list. cdrom text auth --enableshadow --passalgo=sha512 keyboard --vckeymap=...
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
554 views

httpd 2.4.6 on CentOS 7 - question related to module config in httpd.conf

I am sorry to post this type of question here but due to the great experience and skillsets here, I hope for your understanding. I am using (unfortunately) httpd package (v 2.4.6). In various guides, ...
0
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3answers
879 views

Check installed grub2 modules

I run CentOS 7. Is there a way (e.g., a command) to check which grub2 modules are currently installed?
0
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1answer
486 views

Installed PHP extensions to wrong PHP version

I just bought a VPS and it came with PHP5.3.3 and that wasn't good for our website, so I successfully (so it seemed, anyway) installed PHP5.6.7 and successfully registered it with Plesk. For the ...
1
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1answer
185 views

CentOS 6 Static IP Address

I've just assigned my CentOS machine with a static IP address using the /etc/sysconfig/network-scripts/ifcfg-eth0 which has the following lines and seems to be working #eth0 config DEVICE="eth0" ...
0
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0answers
250 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 ...
1
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2answers
1k views

Centos 7 - Trying to install postgresql (from postgresql.org)

I am trying to install Socorro service on fresh Centos 7 (installed on Amazon ec2). I am following the instructions from the official documentation - Socorro. I installed the PostgreSQL 9.3 RPM ...
0
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0answers
101 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 ...
0
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1answer
325 views

VPS: How to forward traffic to devices from public IP

My goal is to set up a public IP for a Android Smartphone which is running an "IP Cam" software - the interface can be accessed in local network on (example) 192.168.0.2:8080 - But it has no public IP ...
0
votes
1answer
183 views

Nginx File 404 when trying to launch drupal install.php

I am getting a 404 when trying to access the install.php for drupal on nginx. Below are my /etc/nginx/nginx.conf and /etc/nginx/conf.d/default.conf files. the nginx user and group own the /var/www/...
0
votes
1answer
180 views

mount times out with iptables --policy OUTPUT DROP

I previously ACCEPTed all output traffic by default. Recently changed the policy to DENY output by default, only opening ports needed for server/application functionality. When I tried to mount a ...
1
vote
1answer
296 views

How to create permanent ip alias belonging to different subnets in Centos

I followed this link and created few alias ips on my centos 6.5 machine but all these ips belong to same subnet. What I have: My machine: eth0, 10.91.56.3 IP Alias1:eth0:1, 10.91.56.4 IP Alias1:...
3
votes
1answer
575 views

Resize MDADM/Software RAID underlying partition and filesystem

I am running out of space on my root partition and would like to steal some from a different partition. The drives are 2x120GB with mdadm software RAID. I am using CentOS 6.5 64-bit. I used the centos ...
0
votes
1answer
238 views

What does the “-y” do in “yum -y groupinstall gnome”?

I've been googling and reading tutorials, but while the authors go into detail with all the things you can do with yum, no one ever mentions what the -y flag is for. I'm trying to automate this with ...
3
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1answer
3k views

Policy in /etc/pam.d/password-auth is not being enforced

I've updated login.defs and password-auth to include a minimum length on passwords (12), but the minlen is not being enforced when I attempt to change a user's password with passwd. None of the ...
0
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0answers
214 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 /etc/security/limits....
1
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1answer
299 views

Configure systemd-journal-gateway on CentOS7

I installed systemd-journal-gatewayd on CentOS7 and started it. If I connect to the given port the HTTP server is answering but the response is always emtpy. Neither /entries?follow nor /entries?boot ...
0
votes
2answers
642 views

Yum Broke For some reason

i am trying to install Mysql Client i am getting this annoying message. I am still unable to find the proper answer. [root@localhost Downloads]# yum install mysql-bench There was a problem importing ...
2
votes
0answers
204 views

Why does my USB modem produce multiple /dev/ttyUSB* files?

I have a single Sierra Wireless USB 308 modem we are using for sending SMS message to, and receiving SMS messages from, customers. When this single device is plugged in, the system creates multiple ...
1
vote
1answer
681 views

How do I troubleshoot these SELinux AVC errors?

Background: I have a CentOS 6 LAMP server. Recently the server has started to become unresponsive every few days. Originally, mysqld would throw a nagios alert and I would be unable to even ssh into ...
1
vote
2answers
5k views

Append DNS suffixes to /etc/resolv.conf

Is it possible, and how do I configure CentOS 6.6 so that /etc/resolv.conf will obtain its configuration via DHCP, but will also have additional domain names added to the search line? Bonus points if ...
0
votes
0answers
69 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 ...
1
vote
1answer
387 views

Centos inside Virtualbox — how to set custom resolution?

I have Centos inside Virtualbox. I need custom resolution for my screen. I run xrandr as proposed on the net. New resolution appears in the dropdown. But it doesn't work. Virtualbox addons are ...
2
votes
2answers
160 views

Clone Python from one linux machine to another

I want to run some of my python scripts on my new Linux (Centos 6.5) machine that I developed on another Linux machine (also Centos 6.5). But my problem is that my new machine is not having internet ...
1
vote
1answer
794 views

Cannot use EPEL repo, get NSS error -5990 (PR_IO_TIMEOUT_ERROR)

I'm using vagrant to start up a centOS 7.0 VM. My provisioner is trying to set up EPEL 7 via yum install epel-release -y and then trying to install ansible via yum install ansible -y It installs ...
3
votes
2answers
2k views

Interacting with Tape Library on CentOS 7 via mtx

I have a Quantum SuperLoader 3 plugged in via SAS to a CentOS 7 system. It shows in dmesg and lsscsi and is handled by the ch driver. $ lsscsi [0:2:0:0] disk LSI MR9271-8i 3.24 /...
1
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0answers
139 views

CSF not blocking port when removed from csf.conf

I have removed VNC port 5901 from the csf.conf configuration file and executed a csf -f a csf -x and a csf -e to flush and restart CSF. There is a vncserver running on port 5901 and when doing an ...
1
vote
0answers
285 views

Protected multilib versions: openssl

I'm running on Centos 6.2 x86_64 Trying to install ruby 2.1.2 ---> Package libselinux-devel.x86_64 0:2.0.94-5.2.el6 will be installed --> Processing Dependency: libsepol-devel >= 2.0.32-1 ...
2
votes
1answer
2k views

Autoinstallation of Centos7 (PXE) ends up in booting to the live-DVD login

EDIT: 2015-03-29 16:14 UTC+1: After downloading the images, the VM throws the error "Failed to mount RPC Pipe Filesystem" I am trying to do automatic installation of CentOS 7 via PXE. My PXE server ...
0
votes
1answer
283 views

Error: you do not appear to have the sources for the 2.6.32-042stab102.9 kernel installed

I've just bought a new VPS with Cent OS 6.6 installed. I'm attempting to install Asterisk 11 on this VPS via command line remotely. I've used the directions here however I get this error: you do not ...
-1
votes
1answer
302 views

Linux for real time production server [closed]

I would like to know a linux OS for a real time 24x7 running production server. I have heard that RHEL is pretty stable & suitable for this type of usage. Now I would like to know how it is ...
3
votes
1answer
832 views

Plymouth Boot Splash - Turn off switching to text

I am working on an appliance system based on CentOS 6. I have created a custom boot splash, but I can't find any information on how I would disable the feature to switch to text mode (switching the ...
3
votes
1answer
375 views

sudo -i returns an error [closed]

When I try to switch to root using sudo -i i get the error /var/tmp/sclDvf3Vx: line 8: -i: command not found... However, su - works which I will continue to use. I'm by no means a linux system ...
1
vote
2answers
4k views

Enable ssh host to guest & guest Internet on CentOS 7 guest with VirtualBox

I have 2 CentOS 7 guests running in VirtualBox on a Ubuntu host. I want to be able to: Connect using ssh from host to guest Download/install packages from the Internet on the guest. I currently ...
1
vote
2answers
1k views

gcc installation on CentOS 6.6: configure issue

I'm trying to build/install gcc on CentOS6.6, following this instructions: http://qt-project.org/wiki/How-to-Install-Qt-5-and-Qwt-on-CentOS-6 After the auto-config err'ed out: [felix@localhost ...