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Questions tagged [centos]

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

CentOS is a free (as in beer and speech) GNU/Linux distribution that is community driven and based on source code released from RedHat. CentOS aims to be 100% binary compatible with RedHat Enterprise Linux. CentOS mainly changes packages to remove upstream vendor branding and artwork.

Support & Lifecycle

Each CentOS version is maintained for up to 10 years and a new version is released approximately every 2 years.

+----------+-------------- +---------------+---------------------+
|  Version | Release date  |  Full updates | Maintenance updates |
+----------+---------------+---------------+---------------------+
| 3        | 19 March 2004 | 20 July 2006  |31 October 2010      |
| 4        | 9 March 2005  | 31 March 2009 |29 February 2012     |
| 5        | 12 April 2007 | Q1 2014       |31 March 2017        |
| 6        | 10 July 2011  | Q2 2017       |30 November 2020     |
| 7        | 7 July 2014   | Q4 2020       |30 June 2024         |
+----------+---------------+---------------+---------------------+

External Resources:

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Amazon EC2: How to convert an existing PV AMI to HVM - CentOS - Wont boot

I've now tried every guide I've found on Google, some are posts on this forum. The instances always end up not booting with every guide/method I've tried. Probably spent about 4 days trying out different guides. I follow them to the greatest detail,…
Andre Mamelund
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Apache spawning enormous number of httpd processes

I am running a CentOS 6.7 machine (16 GB vRAM, 8 vCPUs) with a simple web server setup (Apache/2.2.15, PHP/5.3.3, MySQL/5.1.66), hosting an online shop with a moderate number of page impressions (about 2,000 ~ 4,000 per day). The server ran smooth…
proximus
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ifconfig output different for non-root user

we use a montoring system to capture network traffic. the output as root user is fine: eth0 Link encap:Ethernet HWaddr 00:1E:67:E6:D6:FE inet addr:149.56.19.13 Bcast:149.56.19.255 Mask:255.255.255.0 inet6 addr:…
JLW
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security audit flags redhat/centos package version numbers despite patches

Redhat has this policy of backporting security fixes. But then when RHEL and CentOS sites get audited, the auditors invariably just list the package versions or ask ssh what it's version number is, and then they fail you because you appear to be…
DigitalRoss
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Backup CentOS VM on Remote Server without snapshots

I have a VM with CentOS Server installed, which is for Email and Web Services, on a free esxi. The entire esxi has 2 TB usable and the CentOS server has 1.5 TB provisioned. Another CentOS VM that runs a CRM program is using the majority of the left…
Shane Becker
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Install CentOS 6 on HP ML 150 gen9 server with b140i raid controller

I have HP ML 150 with Smart Array b140i controller. I want to install CentOS 6.6, but the driver isn't built-in the ISO. I have download the Driver and install in the USB(dd). I need the command for check the USB, and where to put.
Ashraf Farouk Hilal
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Remove all contents of an openldap server in Centos

I'm facing a problem and I don't know how to solve it. In fact, I have done some ldapadd and I've realised that I need to delete all things from the server. So what I've tested is to reinstall yum but it doesn't solve my problem because the contents…
rsabir
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Daily logrotate error creating unique temp file: Permission denied

I have a CentOS 6.7 box that for some reason fails to rotate logs daily. I'm getting an e-mail similar to this one every day in /var/mail/root: To: root@server.nl Content-Type: text/plain; charset="ANSI_X3.4-1968" Subject: Anacron job 'cron.daily'…
Rafe
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Getting Centos Security Updates as in 2016

I have been searching around in the net and in StackExchange as well, and found out yum-plugin-security although can be installed but it is actually not functioning for Centos-base repositories, back to 2013 and 2014. Referring to this and this. I…
sylye
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Adding mfa verification code to ssh command?

Im trying automate the login process using shell script. I got MFA + pub key authentication working. However Im stuck at how to pass verfication code as a parameter to ssh command. I tried go through ssh pages and stuff but could not able to…
Uday Kiran
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use Sudo in apache

I am using CentOS 6 and trying to call sudo in Apache using this command: exec("sudo -u kouser whoami 2>&1",$output,$code); However SElinux add a line to output array(2) { [0]=> string(53) "sudo: unable to send audit message: Permission…
Steve
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How to maintain ssh connection for multiple scp transfers?

I'm using the scp command to copy files from my local machine (ArchLinux) to my server (CentOS 6.5). But for each scp command a new connection is established and although I'm using SSH keys for authentication the proccess is taking to much time. So,…
Ameer Elsherif
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logrotate frequency - when and from when

if have lograte in my daily cron /etc/cron.daily/logrotate -- assume cron.daily is run at 1.05am daily and if my logrotate config has a weekly settings Does it means that my logrotate will run daily, but the logs will only be rotated weekly…
tiongmaru
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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, it only gives me 4 options to install Microsoft…
1QWK96GT
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Centos 7.1 Create Loopback Interface

I'm trying to alias an ip address onto Lo or create a new loopback interface such as lo:1 I've created…
MarkMcN
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