CentOS is a free (as in beer and speech) GNU/Linux distribution that is community driven and based on source code released from RedHat.

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CentOS 7.1 - Install 32 bit library on 64 bit OS

I have a program that keeps giving me the following error: [root@001 install]# bash niagarad_generic start Starting Niagara Daemon: /opt/Niagara/Niagara-3.8.41/bin/niagarad: error while loading ...
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1answer
30 views

How can I install Development Tools via vagrant and ansible on Centos 6.7

I get this error when running my first ansible playbook (i.e. I am not familiar with ansible yet) TASK: [Install packages] ****************************************************** failed: [default] ...
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15 views

Anaconda kickstart install from local repo?

Right now we use Anaconda to create kickstart files. Everything works great but during the Centos install it throws an error that a package is missing. Our solution so far has been to mount disk 2 ...
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0answers
3 views

Installed OS on EFI system crashes on grub shell [migrated]

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 ...
0
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1answer
32 views

create user without password in ubuntu with su access?

I am trying to create a user with su access on centos. I followed the instructions from this post. but NOTHING worked. I want to login using su test_user steps: sudo adduser test_user (No prompt to ...
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1answer
30 views

graylog not getting cents 7.1 syslog messages using the rsyslogd service

Good morning! I'm playing with Graylog today and everything is working well on Ubuntu, but the two CentOS 7.1 servers I've attempted to attach to it are acting strange. I've been keeping notes as ...
7
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1answer
198 views

Iptables with -m and -p parameter

I have this rule in my iptables: iptables -A INPUT -p tcp -m tcp --dport 9191 -j DROP Do I really need "-m tcp"? I already am using "-p tcp", so should I use "-m tcp" to be more secure?
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33 views

Tomcat7 starting before networking comes up

So I am having an issue with Tomcat7 on centos/rhel On this server we have 2 tomcat instances and to separate them we bind the HTTP and HTTPS connectors to an IP address. What seems to be happening ...
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36 views

illegal instruction (core dumped) centos

I have a vps with centOS 6 46 installed and I installed mplayer. when I type mplayer it suppose give me the version but instead it give me this : illegal instruction (core dumped) I don't know what ...
3
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1answer
65 views

Possible to set the specific order of a resource in a Pacemaker group?

Given the Pacemaker/Corosync resource configuration described below, is it possible to add a resource in a specific position within the resource group? The configuration is CentOS 7.2 using the ...
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23 views

RADIUS + LDAP + Cisco router 1941

I have a unique setup in my data center where I have configured a Radius with LDAP for authentication and authorization in my cisco 1941 router for remote IPSEC vpn users. This works fine and dandy. ...
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10 views

Centos 7 i686 Log entries [migrated]

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 ...
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2answers
43 views

System clock always resyncs after setting it

I'm setting the system clock using the following command: date -s "31 DEC 2015 12:00:00" Immediately after executing I run just date and see that the date and time is December 31 2015. Then, after ...
0
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1answer
30 views

centos 7 : nginx givers error when enabling log

In CentOS 7, if I put the following line in my nginx.conf: error_log /usr/share/nginx/wordpress.itzgeek.com/logs/error.log; I get the following error when restarting nginx: nginx: [emerg] open() ...
-1
votes
1answer
30 views

tomcat not shutting down in CentOS [closed]

I was trying to shutdown tomcat but giving me following error. /opt/apache-tomcat-7.0.67/bin/catalina.sh: line 439: /usr/local/jdk/bin/java: No such file or directory This is the full output, ...
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1answer
32 views

How do I setup bonding on Centos 6.x for High Availability? [closed]

My server has two Ethernet ports. With Bonding I setup two different IP addresses for both. The hardware is not very new, so I wouldn't expect that the newest versions of these features to work. ...
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0answers
16 views

Postfix Relayhost issue

I've just configured postfix on my centos 7 machine and it's only able to do telnet localhost 25 but it gave error after typing rcpt to error message is "Relay access denied" but when i try to ...
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0answers
11 views

403 Forbidden unless apache set to apache:apache (CentOS 7) [duplicate]

I am using Centos 7 and am getting 403 Forbidden errors when after I have uploaded file. The virtual hosts files are working: <VirtualHost *:80> ServerName myhost.com ...
7
votes
1answer
112 views

Reset GID/UID auto-increment numbers

I created a virtual mail user for postfix virtual mailboxes with a gid/uid of 5555, but now every new user I create starts at > 5555, is it possible to reset the autonumbering so normal users will be ...
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0answers
26 views

Bacula: Writing backup fails

I installed bacula 7 on Cent OS 7 according to this howto: ...
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2answers
150 views

Add extra module to ansible

I have installed ansible to make automation deploy my system and i need some extra module to work with it. I downloaded module yumrepo.py on ansible github and add it to my library directory. But when ...
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2answers
61 views

KVM: Need multiple Virtual Machines to share a VLAN'ed interface

I'm not sure how to configure my Linux server which has a single VLAN'ed interface to support a number of Virtual machines which I want to bridge to my network (so that all their services appear to ...
4
votes
1answer
67 views

rsync (and scp) failing with no space left on XFS device

I have a fresh install of CentOS 7 with a primary partition of 400GB formatted for XFS. Less than one GB is currently in use. I am trying to rsync 65GB of files over and the copy starts failing ...
2
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0answers
55 views

Issue with Headless selenium on CentOS 7 Minimal

Required: I'm trying to run headless selenium (using PHPUnit) on fresh CentOS 7 minimal. Problem: It seems I installed everything correctly but firefox is not launching and my selenium web driver ...
4
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1answer
50 views

Bash to start missing debugger after update to 4.2

I'm on Centos 7.2. Yesterday I've made an update of bash to version bash-4.2.46-19.el7.x86_64 and now on login I get this: -bash: /usr/share/bashdb/bashdb-main.inc: No such file or directory ...
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1answer
24 views

How to login as root in vps from main server (Dedicated)

how to login as root in VPS from root main server without changing the existing root password? I have Dedicated server and use virtualizor OpenVZ for make it available for to build vps, but one of my ...
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2answers
77 views

IPv6 routing under KVM virtualization

I'm having trouble configuring IPv6 routing under KVM virtualization, and I need your help! On the host machine. It uses bridge (named br0) to give its guest machines Internet access. On the guest ...
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0answers
21 views

Modern Node.js support/security on CentOS 6

I'm inheriting a legacy Node application that's running on 0.10/CentOS 6. I'd like to upgrade it to 4.2, but am running into a few issues. Previously, my sysadmin had been installing/updating Node ...
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0answers
31 views

Apache using all cpu and cause OOM killer

I have an Xen-VPS CentOS 6.5 64 Bit with 2GB memory and 4 GB Ram, I have application with php, in my application lot of pages need to image which generated by php_imagick extension, here is apache ...
0
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1answer
71 views

CentOS: How to set hostname based on external file in kickstart script?

I install CentOS 7 using the ks=http://10.0.0.100:8080/anaconda-ks.cfg option and I serve the static configuration file by running a simple web server: python -m SimpleHTTPServer 8080. In my ...
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1answer
141 views

How to remotely initiate netinstall of CentOS 7?

I've got 50+ machines running either CentOS 6.4 or 6.8. I wish to re-install these machines with CentOS 7 using a configuration script (for example using the "basic server" template and setting ...
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11 views

CentOS Drupal Site/Domain Sending UDP Attacks on Different IPs [duplicate]

My Drupal 7 site is hosted on a Cent-OS 6.5 VM. The hosting service provider notified me about an malicious activity on site and site is sending UDP packets on different IPs. Following is data ...
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78 views

Postfix capture messages exceeding limit

Is it possible to capture/filter messages that are exceeding the limit that has been set in the postfix configuration, and forward the captured mails to an external id? thanks in advance. EDIT : We ...
5
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1answer
95 views

NFS4 - Mounting multiple subdirs

I'm trying to setup 2 different mount points on an NFS4 server but can't get it working as desired. /etc/exports (on server) /mnt/raid/nas 10.1.0.0/18(rw,fsid=0,sync) ...
2
votes
1answer
34 views

How to run a stack trace on Apache?

I have a PHP web application running on Apache/mod_php that works fine for several days and then fails, returns 500 Internal Server Error. I've turned on debug logging and do not see anything in the ...
1
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1answer
26 views

Nginx serving C++ cgi script: response is binary format

I am trying to run C++ CGI script on nginx. I am using FCGIWrap with script from nginx website. The program code is like this: #include <iostream> using namespace std; int main () { cout ...
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0answers
34 views

XEN VPS wrong memory?

I ordered a VPS on XEN platform with 1 GB of memory. CentOS 6.6 uname -a Linux vps 2.6.32-504.23.4.el6.x86_64 #1 SMP Tue Jun 9 20:57:37 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux I checked the ...
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2answers
224 views

Can't start CentOS 7 “network” service

I have a minimal CentOS 7.2 installation on a small mini PC with 6 ethernet ports. I chose to exclude NetworkManager from the install as I would prefer to use the basic network service or switch to ...
3
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1answer
127 views

HP Proliant DL380p Gen 8 with p420i raid controller attempting to install Centos 6 or 7

I am attempting to install Centos 6 or 7 on a backup server Proliant DL380p Gen 8 with a p420i controller. The problem is when I use the intelligent provisioning built in to setup the raid and such, ...
0
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1answer
27 views

Change Return-Path address with postfix/opendkim

I've just set up opendkim on my server. Prior to this I had postfix set up to have the return path headers set to info@domain.com now after installing opendkim that's now changed back to what it was ...
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1answer
30 views

Postfix - Host or domain not found

I installed postfix on my centos. this is postconf -n output: alias_database = hash:/etc/aliases alias_maps = hash:/etc/aliases command_directory = /usr/sbin config_directory = /etc/postfix ...
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1answer
291 views

Configuring SSL With Virtual Hosts under Apache and CentOS

I've got two websites being served from a CentOS instance. One of those has SSL enabled, the other is just served on port 80. So, http://siteone.com and https://siteone.com both work fine, as does ...
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1answer
280 views

How to upgrade PHP to 5.6.x or 7.0.x on CentOS 7.2?

I'm on CentOs 7.2 with PHP 5.4.16. I'd like to update to PHP 5.6.x or maybe even to PHP 7.0.x if it's safe to do. What are the steps to safely switch to a newer PHP version? These are PHP related ...
0
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0answers
30 views

SNI server support with Plesk 12/CentOS7 & Letsencrypt [closed]

I've got myself Letsencrypt certificates, and finally - with some information fetched from the web - could install them correctly enough in order to get an A+ rating from ssllabs. However, Google (!) ...
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1answer
90 views

Centos Server with Apache hacked - Removed files but still showing compromised by Google [duplicate]

It's desperate times for me/us in trying to figure out what's going on. We have been hacked recently and lost our rankings/traffic due to google posting a message saying "This Website May Be Hacked". ...
2
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1answer
111 views

KVM Virtual Machine: Wrong Disk Size

Ever since I did yum update and tried to create a new (for example) 10GB Disk KVM VPS, the reported disk space inside VM is locked to the initial template size (usually 1GB for linux template). ...
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2answers
40 views

Passing argument in a .py script for nrpe plugin

Machine A = nagios master, Machine B = edge machine. In machine A's host.cfg I have: define command { command_name check_tok command_line $USER1$/check_nrpe -H $HOSTADDRESS$ ...
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20 views

Is there a way to get the KVM Guest using alias interfaces to communicate with one another?

I've done lots of reading and it seems I have misconfigured my KVM Server. I would mess with the networking to get it to work but everytime I have, my company had to send somebody over while I try to ...
2
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0answers
53 views

Sudden failure of networking interface on CentOS 7

We're running a LAMP stack VPS on CentOS 7 hosting a few websites, MariaDB databases, and associated services. In the middle of the night our server mysteriously went completely offline. When we ...
1
vote
1answer
26 views

logrotate - run the postrotate after all processing

I have a logrotate script that is structured to rotate logs collected by syslog. Part of that script is to reload the syslog process. The problem is that the syslog reload runs for each matching log ...