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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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Cannot ssh with shared keys on CentOS 7 server refused our key

I cannot ssh to a CentOS 7 server using pre-shared keys, I get a "server refused our key" message. Below is an ssh attempt using -vv OpenSSH_7.2p2, OpenSSL 1.0.2h-fips 3 May 2016 debug1: Reading configuration data /etc/ssh/ssh_config debug1:…
feub
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Unable to install on a Centos 6 the library "libsrtp"

I try to install on a Centos 6 the library "libsrtp" but it expects the below libraries already present under these paths /lib64 and /usr/lib64. could you please tell me how can I resolve this problem ? error: Failed dependencies: libc.so.6 is…
Fabio_M
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ZFS on linux with centos 7.2 sync reads slow to crawl when executing sync writes

We are running ZFS on linux with centos 7.2. The array has 26 6tb Seagate sas drives in a mirrored configuration and then stripped across the mirrors to form our pool. 128gb arc, 480GB l2arc PCI flash card. Slog is supplied by a sata ssd. We are…
user2997301
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how to run a shell scripts at every login in Centos

Actually i want to run my shell script at every time when a user login as well as at boot. i have tried using using crontab but it runs only at boot not at every login.so please tell me how to do this. #crontab -e @reboot /home/user/test.sh
pawan
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Centos setting password for user, but still can't log in on it

I've got a problem, where even though i set a password and try to log in with it, it doesn't work. I created a new user called test with password test. When i try to log in i get "access denied". I tried to re-set the password many times, but that…
Jojo Coana
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xinetd won't start

Silly question... I can't get xinetd to start on my linux box (CENTOS 4.8). I've got so far as to remove it and reinstall it via yum. When I try to start it, stop it, etc. I get no error at all. [root@server ~]# service xinetd stop …
Mike B
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polkit.service - Authorization Manager fail to activate

Major issue with polkit service how to fix this its trying and failing to activate polkit every time. Sorry if noob question. systemctl status polkit.service ● polkit.service - Authorization Manager # systemctl status polkit.service ●…
Pascal
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puppet master is not executing autosign script

I have created a shell script to autosign Puppet certificate requests at /etc/puppet/autosign.sh and have configured this path in the puppet master's configuration. autosign = /etc/puppet/autosign.sh For now, I have given all users read and…
Nick G
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Why does Debian have RPM and Yum packages?

I know that Debian comes with an awesome package manager called APT which is capable of installing .deb packages. I know that RHEL comes with a package manager called Yum and is capable of installing .rpm packages. But, I have discovered that I can…
gtbono
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How to verify network quality before running important benchmarks?

I have multiple CentOS servers around the world. They all are running a PHP script that tests the latency of some services once per minute. The problem is that sometimes these servers have local issues and incorrectly mark the remote services as…
User45454
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How to get all SNMP items using zabbix?

Scenario: OS: CentOS 7.2 Zabbix version: 3.0 Trying to monitor some switches using SNMP protocol I'm able to monitor them without any problem, all items are working and everything is fine but adding every item is a pain in the ass and I'm not into…
sysfiend
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Is it possible to monitor processes with Zabbix?

I've installed zabbix-server, zabbix-proxy and some zabbix-agents on some of my dedicated servers. Everything is working and I'm quite happy with everything but I was curious about this topic: monitoring processes. What I want: I would like Zabbix…
sysfiend
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How to name systemd mount unit properly?

I'm trying to automount CephFS after boot via systemd I've got the next…
chs_voks
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Vim hangs on one specific file?

My putty session keeps on hanging when I'm in the middle of editing a file in vim. This has happened three times this morning. Hopefully it's nothing, just a glitch in the matrix somewhere, but I fear it means disk/memory problems on my server. …
Codemonkey
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error in installation of ejabberd

i am trying to install ejabberd in centos . ejabberd is running but when iam try to register it showing error like this. /opt/ejabberd-14.12/bin/ejabberdctl register root testrecoveryim.test-mobile.com test The node 'ejabberd@test' is started with…
navi
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