Skip to main content

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.

2,231 questions with no upvoted or accepted answers
Filter by
Sorted by
Tagged with
10 votes
0 answers
2k views

CentOS 6 local update repository and security updates

I know that official CentOS 6 (even 7) update repositories does not provide security information. The consequence is thatyum-plugin-security plugin and yum check-update --security command does not ...
dsmsk80's user avatar
  • 5,937
8 votes
1 answer
19k views

God Process Monitoring - CentOS - Event System Not Found

I have god installed on at least a dozen (or more) servers running CentOS 5.5 in both i386 and x86_64 flavors that work perfectly. I just setup two new CentOS 5.5 x86_64 servers and installed God, but ...
organicveggie's user avatar
7 votes
1 answer
868 views

Intermittent munin-cron error “There is nothing to do here, since there are no nodes with any plugins”

We've installed munin monitoring on one of our servers. Generally it seems to be working well but occasionally, 4 times in 2 months to be exact, munin-cron has generated the following error: [...
scarba05's user avatar
  • 333
6 votes
0 answers
4k views

journald memory usage on CentOS 7

I have an AWS EC2 instance running a CentOS 7.7.1908 (systemd 219) with a server application. The server logs quite a lot of information to the system logs (using syslog). I have recently enabled ...
MikaDo-'s user avatar
  • 61
6 votes
1 answer
1k views

nano very slow over ssh

Recently nano has started to be very slow when editing files over ssh. It's particularly slow when editing large files with syntax highlighting. It's most noticeable when yanking lines. There can ...
Jordan Reiter's user avatar
6 votes
0 answers
605 views

Low Entropy on Container

I am thinking my entropy level may be low? $ cat /proc/sys/kernel/random/entropy_avail I am around 132-178 on average. Pool size is default 4096 (this is a container on a virtualizer by the way). ...
Gordon Snappleweed's user avatar
6 votes
0 answers
6k views

Wrong filename encoding/decoding when downloading recursively with wget

I'm downloading files from a remote directory recursively using wget and whoever created the folders and files, used special characters such as è or Ó, when I download a single specificating the full ...
Nagarz's user avatar
  • 61
5 votes
0 answers
5k views

GitHub SSH action failing: ssh: handshake failed: ssh: unable to authenticate, attempted methods [none publickey], no supported methods remain

I have recently rented a VPS running CentOS 8. I want to make countinuous deployment from one of my repos, so that when I push to main the repo is updated. I followed this tutorial on a fresh CentOS ...
mianfg's user avatar
  • 51
5 votes
0 answers
1k views

Users created in Kickstart unable to authenticate

Thanks to the answers to this question, I've been happily generating Kickstart files for Scientific Linux 6 and 7 for the past 5 years. However, we're now starting to build out some test systems with ...
miken32's user avatar
  • 974
5 votes
1 answer
5k views

RSYSLOG not creating tcp port

At a certain point this was working and I do not know what could have changed. No logs are going to the TFTP folder and instead I just see the error message posted below. I tried rebooting the server. ...
James's user avatar
  • 51
5 votes
1 answer
481 views

Server computational slowdown when RAM is used extensively

I have problem with server slowdowns in very specific scenario. The facts are: 1) I use computational application WRF (Weather Research and Forecast) 2) I use Dual Xeon E5-2620 v3 with 128GB RAM (...
Ivan Toman's user avatar
5 votes
1 answer
2k views

HSTS header not being sent though rule is present and mod_headers is enabled

We enabled HSTS in httpd.conf in the Virtual Host handling port 443. We tried with and without the <IfModule mod_headers.c>: <IfModule mod_headers.c> Header set Strict-Transport-...
user avatar
5 votes
1 answer
3k views

Proper way to override Mysql my.cnf on CentOS/RHEL?

Context: I'm porting an opensource server software (and writing associated documentation) from Debian/Ubuntu to CentOS/RHEL. For the software to run correctly, I need to add a dozen of specific ...
Matthieu FAURE's user avatar
5 votes
0 answers
1k views

What SELinux type should I apply on my Unix socket?

I have a Gunicorn socket file: /opt/rtd/gunicorn/run.sock. I need nginx to be able to open this socket and write to it. When I run sesearch --allow -s httpd_t | grep unix_stream_socket I noticed that ...
Christoffer Reijer's user avatar
5 votes
0 answers
1k views

Can't stop and reformat /dev/md0

I want to reformat /dev/md0, which is a RAID0 array consisting of 4 disks (sd[bcde]). However, when I tried to run the command mke2fs, I received the following error message: /dev/md0 is apparently ...
roymaztang's user avatar
5 votes
1 answer
2k views

difference between ifdown, ifconfig stop and ONBOOT=no

my ifcfg-eth1 config as below DEVICE=eth1 TYPE=Ethernet UUID=5e4f36f8-14eb-4f0c-8fa9-3af9be3899a7 ONBOOT=no NM_CONTROLLED=yes BOOTPROTO=dhcp DEFROUTE=yes IPV4_FAILURE_FATAL=yes IPV6INIT=no NAME="...
Noob's user avatar
  • 363
5 votes
2 answers
2k views

How to reset and persist the hostname and FQDN of an Windows Azure Centos instance?

How does one reset a hostname and domain name (FQDN) to localhost.localdomain on a Centos 6.2 Azure Instance? I've tried editing /etc/sysconfig/network, /etc/sysctl.conf, setting the hostname manually,...
ddario's user avatar
  • 491
5 votes
0 answers
5k views

Corosync unicast issue with different nets

I'm using a setup (on our staging-system) with 2 root-servers and 1 fail-over-ip. As software we use corosync and pacemaker. Corosync is configured for multicast communication via port 5405. --> ...
Rene Hellmann's user avatar
5 votes
1 answer
870 views

Are there RPMs for GlassFish v3?

It seems that the GlassFish project itself does not provide RPM packages, and neither does JPackage (http://jpackage.org/). Is someone else providing ready-built RPM packages for RHEL/CentOS? On a ...
Make Mark's user avatar
  • 2,004
4 votes
0 answers
514 views

Showing [Installed Version] when upgrading with dnf in CentOS/Redhat/Fedora/Rocky Linux

When running dnf upgrade it only shows the new version of a package about to be upgraded. But I would like to see what the currently installed version of the package is too. Without having to go look ...
BitGen01100000's user avatar
4 votes
0 answers
2k views

How to make systemd monitor processes started using a shell script in the service file?

I have written a service file in Linux that calls a script which starts multiple processes with one as primary and others as secondary. SERVICE FILE: [Unit] Description=TEST service Requires=abc....
Vedang's user avatar
  • 41
4 votes
0 answers
2k views

Are there any known common causes of "Cannot kill process: Success!" in error.log?

Operating system: CentOS Linux release 7.6.1810 (Core) Error log: /var/log/httpd/error.log Apache version: Apache/2.4.6 In attempting to debug a PHP cron task, I am seeing some segfaults in error....
s11111's user avatar
  • 151
4 votes
0 answers
142 views

A little confusion about DBM files and how they work

I have apache 2.4 and am using RewriteMap DBM files. ie: <IfModule mod_rewrite.c> RewriteEngine On RewriteMap examplemap "dbm:/etc/httpd/conf/rewrite.dbm" RewriteCond ${examplemap:$...
Anthony Fornito's user avatar
4 votes
1 answer
2k views

CentOS virtual host Server DNS could not be found

I want to deploy my project in virtual host in CentOS running server. I have this <Directory /> #change value of next line from none to all AllowOverride none Require all denied </...
guradio's user avatar
  • 141
4 votes
1 answer
2k views

AWS EC2 - CentOS 7 Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)

I have an EC2 Instance with CentOS 7, after rebooting and stop - start, the instance cannot run anymore. I got this error, what cause this and how to fix it, thank you: [ 1.601892] List of all ...
ostrichegret's user avatar
4 votes
0 answers
410 views

Bind notifies on DNS views

I have configured two Cent OS based DNS servers one for master and one for slave with internal and external views for a domain. The problem is that i get notifies and automatic zone updates when i ...
subfire91's user avatar
4 votes
3 answers
4k views

Need help converting init.d service scripts to systemd (CentOS)

I have spent several days on an issue that's incredibly frustrating and I'm straight out of options. I am currently using a CentOS 6.8 server at work for our website. CentOS 6 (Enterprise Linux 6 or ...
Danny  Forche's user avatar
4 votes
0 answers
1k views

HAproxy and nginx RTMP

I am trying to use HAproxy in front of an RTMP nginx server. It does connect but it does not play the video. I have 2 servers: one with nginx using RTMP and another one with HAproxy. This is the ...
miko's user avatar
  • 41
4 votes
3 answers
4k views

Redis: Error moving temp DB file on the final destination: Operation not permitted

I have a nodeBB install which relies on Redis as the data store. Its just a test install at the moment while I iron out any problems. The Redis instance stayed up for a few days but then fell over ...
codecowboy's user avatar
  • 1,367
4 votes
0 answers
793 views

journalctl prints the entire system log when following

[root@utility ~]# uname -rv 2.6.32-042stab093.5 #1 SMP Wed Sep 10 17:39:49 MSK 2014 [root@utility ~]# cat /etc/redhat-release CentOS Linux release 7.1.1503 (Core) [root@utility ~]# journalctl --...
int_541's user avatar
  • 151
4 votes
1 answer
8k views

Send mail service start error

I installed sendmail on CentOS based on some tutorial. When I start sendmail, it showing sendmail failed error. Here the following command result: systemctl status sendmail sendmail.service - ...
Joseph's user avatar
  • 61
4 votes
1 answer
511 views

NGINX Worker Process, Burst Read Speed to only 1918kb/s

I am running an NGINX/1.8 server on Centos6.6 with multiple worker_processes, however while observing iotop I notice they burst up to 1918kb/s Read speed and rarely if at all pass that limit. I want ...
Kenneth's user avatar
  • 131
4 votes
0 answers
726 views

pppd terminated bya SIGTERM in Centos 7 -- who's sending it?

Folks, I created a script to keep a persistent "emergency" connection with a 3G modem, so I can access my CentOS 7 makeshift server remotely if the usual network fails. Everything works for a few ...
Not your workmate's user avatar
4 votes
0 answers
565 views

slabtop command doesn't work

I've inherited Sys Admin duties on webserver and I'm a bit of out my element, but learning as I go. My newest issue is all the of the ram has been gobbled up and I'm not sure where it has gone. free -...
WesleyJohnson's user avatar
4 votes
0 answers
6k views

CentOS kickstart automated setup with parted / RAID

I'm trying to use parted to partition my entire drives automatically during the CentOS kickstart install, however, I'm getting two issues with my install. I want to kickstart my installs across ...
Devon's user avatar
  • 800
4 votes
0 answers
937 views

Sendmail on CentOS 6, with SRS

I do some mail forwarding, but I'm also a big fan of SPF; I'm aware that I have a problem. While my mail server was running Centos5, I was using pysrs as a milter, and it worked well - but it hasn't ...
MadHatter's user avatar
  • 80.8k
4 votes
1 answer
2k views

Linux cgroups cpuset w/ subs causes cgconfig not to start

I am having a problem trying to separate 2 groups using cpuset subsystem. This works fine, however if i go to add a subgroup to that group (in this case -- user1), cgconfig will fail to start with "...
Josh Trier's user avatar
4 votes
1 answer
292 views

tape changers on Centos 6 enter flurry of activity upon boot, at udev start

I have two tape-changer robots (Quantum Superloader 3), one with parallel SCSI connectivity, the other with SAS. They were connected to a Centos 5 server, and boot would proceed normally. They are ...
ACKumen's user avatar
  • 61
4 votes
1 answer
815 views

Intranet corporate SSO for webapps against Active Directory

I am trying to plan and implement a SSO solution in a corporate environment that serves intranet web applications running on CentOS: Corporate portal (Drupal backend) Project management (Project.NET) ...
droidlock's user avatar
4 votes
1 answer
182 views

Apache rewrite works under FreeBSD, not under CentOS

I have 5 production servers which are running FreeBSD 9.2, but we are planning on transitioning to CentOS. Because of this, I am attempting to set up some virtual machines to emulate our production ...
Peter's user avatar
  • 133
4 votes
1 answer
2k views

CentOS7 systemctl calling ExecStop on reboot after my procceses are already killed

I have a systemd script which is as follows: [Unit] Description=My sites Before=shutdown.target reboot.target halt.target [Service] Type=oneshot ExecStart=/bin/bash -c '/etc/xxx/mySites start' ...
Mariano Martinez Peck's user avatar
4 votes
2 answers
16k views

Nginx error: "Primary script unknown" while reading response header from upstream

I have installed Nginx 1.6.2 with PHP-FPM (PHP 5.5.18) under CentOS 6.6 server. I didn't touch nothing else but /etc/nginx/conf.d/default.conf file where I made some changes (see below): server { ...
ReynierPM's user avatar
  • 722
3 votes
0 answers
454 views

Unable to su or ssh as anyone but root on CentOS 7

I seem to be unable to ssh or su as a local user on my CentOS 7 machine as of today. $ adduser ndejay $ passwd ndejay Changing password for user ndejay. New password: Retype new password: $ su ndejay ...
Nicolas De Jay's user avatar
3 votes
0 answers
4k views

how to allow outgoing traffic with firewalld / libvirt on CentOS 8?

I installed a CentOS 8 guest on a CentOS 8 host using libvirt. However firewalld is blocking all outgoing traffic from the guest to the internet unless I use target=ACCEPT for the libvirt zone. The ...
Felix Schwarz's user avatar
3 votes
0 answers
450 views

CentOS Linux 8 freezes when changing SELinux Booleans (setsebool)

Problem Various CentOS Linux 8 servers freeze/hang when changing SELinux Booleans. Details and research We manage hundreds of CentOS Linux servers. Lately we see deviant behavior on some (but not all) ...
acropia's user avatar
  • 51
3 votes
0 answers
1k views

Make Headless Server Use Hardware Accelaration

I have a headless CentOS 8 Server with an AMD GPU. I want to use hardware acceleration but when I run OpenGL programs with xvfb-run (e.g glxinfo), the system reports I am using software rendering. How ...
user avatar
3 votes
0 answers
4k views

CentOS: how to fix GDBus.Error:org.freedesktop.DBus.Error.LimitsExceeded (Maximum active connections)?

On a CentOS 7 server I'm getting this error while trying to reboot: # reboot Error getting authority: Error initializing authority: GDBus.Error:org.freedesktop.DBus.Error.LimitsExceeded: The ...
1Z10's user avatar
  • 131
3 votes
0 answers
10k views

Server can't find domain: SERVFAIL

I have VPS and CentOS7 installed on it. Also I have httpd Apache2, nginx, named and iptables services working there. First, when I just bought this server, I had hostname maindomain1.com and made my ...
holycreeper's user avatar
3 votes
1 answer
497 views

OpenVPN Traffic Control on CentOS 7

I'm trying to give my OpenVPN some bandwidth limitation. I would like for example for each user give 10Mb/s for upload and download. I tried the following answer I found (Automatically Call a Script ...
executable's user avatar
3 votes
0 answers
234 views

Libreswan Testbed in VirtualBox

I'm currently working to create a testbed in VirtualBox for two VMs with an isolated opportunistic IPSec network with LibreSwan. All services are coming up fine, but network traffic between the two ...
schrodingersket's user avatar

1
2 3 4 5
45