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.
10,680
questions
0
votes
0
answers
55
views
How to initialize cockpit on CentOS8?
I am trying to access my public IP of the EC2- box on port 9090 to access centOS8 cockpit but I am unable to get to my centOS8 cockpit.
My security group from the server is Security group
This is what ...
0
votes
0
answers
44
views
Centos :: Can't delete file with "rm" under "/", operation is not permitted [duplicate]
I have a CentOS server.It has been hasked.There are some malicious file under "/", like "/11db32e5", the AV scanner say it is a "HackTool/Linux.CoinMiner.n". But i cannot ...
0
votes
0
answers
40
views
All .PHP pages give 5x error in nginx
I followed this guide to install Nginx and PHP on a CentOS server. I am able to do things like php --version and even use the interactive shell. But inside of /usr/share/nginx/html/, I make a PHP file ...
- 1
1
vote
1
answer
86
views
Backup server for several servers with yesterday's files
There are several servers under CentOS with PHP projects, and the task is to make a server (or servers) for them to store yesterday's versions of uncompressed files of all projects from all servers, ...
- 33
0
votes
0
answers
90
views
How to prevent ethernet issues after command line shutdown in CentOS7?
I'm running into a frustrating issue with a system running CentOS7. There's an Intel NIC (Intel Corporation Ethernet Connection (2) I219-LM (rev31)) which, when working, provides a 1000Mb/s connection....
0
votes
0
answers
73
views
Nat Local subnet to another gateway centos7
hi i have a centos 7 with ocserv and iptables installed
i wanted to route all OCserv teraffic to ip tunnel (which established and reachable)
my Server ip is 172.10.1.1
My OCSERV Users Subnet is : 192....
2
votes
1
answer
1k
views
Samba share not accessible to client in the same network
Two servers in the same network, a
Windows server (client), and a
Linux server (samba share host)
The shared folder can be seen by the client but not accessed. See below for the configuration:
smb....
- 23
0
votes
1
answer
80
views
CentOS 7: Postfix logs got cleared when running history -c. How can I investigate what happened the day the log was cleared?
By default, running history -c has no way of also deleting /var/mail/maillog, right?
How can I investigate what happened the day the log was cleared, or (by definition) when the new maillog was ...
- 113
0
votes
0
answers
457
views
Pgadmin4 - 500 Internal Server Error
I am a new user of PostgreSQL. I have installed PostgreSQL 13 on the CentOS 8 server and configured PGAdmin4 in both the web UI and desktop UI modes. The installation was successful and Desktop UI is ...
1
vote
1
answer
305
views
CentOS 7 kickstart file, add entry to /etc/hosts
I have a CentOS 7 kickstart file working quite nicely, mostly. The %packages section fails because I need to add an entry to /etc/hosts to point mirrorlist.centos.org to our internal company repo. I ...
- 509
0
votes
1
answer
93
views
Map dev notation to logical volume name
I need to figure out what dm-2 or dm-0, etc. is (this notation is found in dmesg notices, sysstat reports, etc.) and lsblk is not installed
I find lvdisplay output a little bit confusing.
Can someone ...
- 28
0
votes
0
answers
691
views
how to setup socks5 proxy server on centos9 for network access behind firewall?
I need a socks proxy on centos 9, to access services from an (internal) network behind a firewall.
It should be a socks 5 proxy (dynamic port forwarding) that can only be used by the configured ssh ...
- 99
0
votes
1
answer
56
views
Using custom nameservers
In Godaddy I have a domain example1.com and www.example1.com with valid A record to my Centos 7 server's IP.
I 've created hostnames for that domain, ns1.example1.com, ns2.example1.com with the same ...
-3
votes
2
answers
116
views
Creating/Configuring a DNS server with runtime configuration [closed]
I have a big Windows video/audio application that may be controlled remotely over a web server. For that, I can listen to a local port in a, say, 192.168.1.10 system to port 8000, forward the port via ...
0
votes
0
answers
59
views
system load spikes causing php-fpm pools to fill and cause micro outages
kind of at my wits end at this point and looking for some help.
2 physical Web servers
CentOS
NGINX
PHP5
php-fpm
2 physical DB Servers
CentOS
NGINX
elastic search
zookeeper
couchbase
as user load ...
0
votes
0
answers
139
views
SSSD LDAP CONFIGURATION
I am trying to configure ldap on port 636 on a redhat server. Right now, when I try the following command :
netstat -antup | grep -i 636
I get
tcp 0 132 IP_ADDRESS_1:40670 XX.XX.XX.XX:...
1
vote
1
answer
364
views
Failover load balancing by iptables is possible?
I'm playing around with iptables in my home lab. My first goal is to take my active directory communication into one load balancing virtual IP. I used prerouting chain to do that. For testing purposes,...
- 21
0
votes
1
answer
35
views
Notifying an administrator when mail-server wasn't able to upload logs to ftp-server - if condition is failing
I am currently working on a solution, that would notify me whenever my mail-server isn't able to transfer files to my ftp-server. (Right now my logs get rotated once per night and immediately uploaded ...
- 65
0
votes
0
answers
561
views
CentOS 7 SCL (Software Collections) abandoned?
There is a difference in version between httpd24-httpd installed with Software Collections on CentOS 7.9 and httpd24-httpd installed with RHEL (Universal Base Images).
CentOS 7.9
yum install centos-...
- 101
3
votes
2
answers
940
views
How to automatically change the name of a file on a daily basis
I am new to Linux/CentOS and right now I am running into a little problem.
My CentOS7 Server logs all Maillogs, via Logrotate, on a daily basis and moves them to the folder /var/log/old_maillogs. ...
- 65
3
votes
1
answer
930
views
Cross domain authentication with transitive forest trust for linux
I have two domains -- one for dev and one for corp.
I can join a Windows machine to the dev domain and login as a corp user because of the transitive forest trust. I can join a Linux machine to the ...
0
votes
1
answer
412
views
Clients of a site are getting SSL_ERROR_HANDSHAKE_FAILURE_ALERT (Firefox) and ERR_BAD_SSL_CLIENT_AUTH_CERT (Chrome)
I'm running a site in AlmaLinux 8.8 (Centos) and Apache 2.4.56.
The site has a self-signed certificate.
When I access the site, I get the usual warning due to the self-signed certificate. After ...
- 101
0
votes
0
answers
145
views
Connecting to another server by bash script
On server A I have a script in bash with a conditional. If the conditional is true, a connection is made to server B and httpd is reloaded. The script runs in cron and everything works correct.
I don'...
- 1
0
votes
1
answer
829
views
Looking for CIS Benchmark script for CentOS 7
I am not sure this is the right place to ask this. I apologize if it is not.
I have few CentOS machines that is running 7.7 version. And I need to do a CIS benchmark for finding any vulnerabilities. I ...
- 191
1
vote
0
answers
4k
views
Leapp upgrade : no matches found for the following disable plugin patterns : subscription-manager
I’m trying to elevate from CentOS 7.9 to Alma8. I’m following the official guide, but I’m stuck at leapp upgrade. I have the following error :
STDERR:
No matches found for the following disable plugin ...
- 39
0
votes
0
answers
92
views
PHP Error waiting on socket
I'm getting problems with ssh2 and fread php function that started on a few days.
On the apache error log show:
ssh2_connect(): Error starting up SSH connection(-9): Error waiting on socket
fread(): ...
- 11
0
votes
0
answers
318
views
Centos show me "Cannot find a valid baseurl for repo: base/7/x86_64"
Hi, i have a issue, when i type in Centos 7 "yum update" show me next error
Loading mirror speeds from cached hostfile
One of the configured repositories failed (Unknown),
and yum doesn't ...
- 103
1
vote
1
answer
1k
views
How to manually validate the signature of an rpm file
What I need
A way to get an asc file containing the signature from an rpm file.
Why I need it
I'm running into the issue described in this Reddit thread, where Chrome installed from https://www.google....
- 111
0
votes
0
answers
161
views
Optimizing CPU and Memory use on Multi-socket NUMA server
I am building a server that will be used by interns in my company to connect to and perform some tasks. The server is running AlmaLinux 9 and using KVM to run Windows 11 guests.
The server has 2 CPU ...
- 1
0
votes
1
answer
689
views
Non-valid paths in "multipath -ll" output
I see paths that are no longer valid along with valid ones. How do I prevent them showing up in the output. I expect four valid paths.
The volume was earlier exported with LUN 13 and later 14 which ...
- 121
1
vote
0
answers
348
views
cannot join to master node using kubeadm join
I am trying to set up a kubernetes cluster and running this command on my worker node
kubeadm join server:port --token xxx --discovery-token-ca-cert-hash sha256:xxxx
and the error i have is
Found ...
- 121
0
votes
2
answers
1k
views
cannot download calico on kubernetes cluster
I am trying to set up a kubernetes cluster on centos, and installing calico is one of the steps.
My control plane is ready, but coredns are still pending.
From the internet, i got the below command to ...
- 121
1
vote
1
answer
930
views
cannot run kubeadm init on centos
I am trying to run kubeadm init on my centos 8 server and I am getting this error
I0609 09:51:54.527931 2575529 version.go:255] remote version is much newer: v1.27.2; falling back to: stable-1.23
[...
- 121
-1
votes
1
answer
660
views
What could be causing PowerMTA not to forward emails over port 465 SSL...?
We have a PowerMTA server that receives incoming e-mail. and forward it to external SMTP server that's not running PowerMTA i tried to do it using port 587 and port 25 both working fine and emails ...
0
votes
1
answer
45
views
Cloudmin backup size
we are using Cloudmin under CentOS 7.9. to manage Xen virtual machines that use LVM. It's all backed up once a week (via Cloudmin's built-in backup system, which I think just uses dd). Last week I ...
- 33
0
votes
1
answer
53
views
Can openssh daemon count key failures separately from password failures?
Recently the max number of auth for ssh was reduced on some servers at my work from 6 to 3 to comply with new security restrictions. Most of us in IT are seeing "too many failures" and no ...
- 249
0
votes
0
answers
72
views
Wrong External IP for Real Server Behind Load Balancer
I have a hardware load balancer with multiple Virtual IPs. ie (3.3.3.3, 3.3.3.4).
Behind Virtual IP 3.3.3.3 I am load balancing several web servers.
Behind VIP 3.3.3.4 I have a mail server running ...
- 101
-1
votes
1
answer
58
views
Linux Hostname - SystemD Service File Causing NetworkManager to Fail on Boot [closed]
systemd[1]: NetworkManager-wait-online.service: Job nis-domainname.service/start deleted to break ordering cycle starting with NetworkManager-wait-online.service/start
- 435
0
votes
1
answer
94
views
SVN running on RHEL 8 Authentication issue
Good morning,
I support a subversion server running on rhel 8. The engineers check in/out software builds from a CentOS6 desktop. I need to add authentication to the SVN URL because it's wide open. ...
-2
votes
1
answer
340
views
Updating Centos 8.0 to Centos 8.3
I need your expert help on how can I update Centos 8.0 to Centos 8.3. I have installed Centos 8.0 using the standard option without GUI. It's a requirement at work. Please help
Thanks & regards,
0
votes
1
answer
1k
views
Cloud-init in kvm guests (Debian and Centos) not setting interface settings
Im trying to use cloud-init to setup kvm guests (currently Debian 11 and CentOS Stream 8), and I am looking for help in correcting the meta-data and user-data files.
Everything else seems to work, but ...
- 257
1
vote
0
answers
210
views
How to change Public Key in Oracle Cloud
I have CentOS running on AMD and Ubuntu running on ARM services on Oracle cloud. Previously, I shared my private key (used for connecting SSH/Putty) with my freelance developer. However, over a month ...
- 189
0
votes
0
answers
553
views
I have a new server but IO Speed is terrible based on FIO results
I ordered a new server because I have to move to higher performance server. However, this new server is totally awful. I tried to get the benchmark by using fio here is the result.
[root@s206716 ~]# ...
1
vote
0
answers
160
views
CentOS getting unusable slow over time running at Hyper-V
I run TWiki 6.1 on a CentOS Stream 9-virtual machine hosted in Hyper-V at Windows10. VMs hostanme is "twiki"
System ran for over a year now without any problems but since some weeks its not ...
- 11
1
vote
0
answers
78
views
Replicate mysql database when target server is MariaDB 10.5 (where mysql.user is a view)
I have a sync script that does a mysqldump on the mysql database on a source server, then imports that dump on the target server, followed by privelege flush. Systems are CentOS 7.
In MariaDB 10.5, ...
- 249
0
votes
1
answer
495
views
"Timed out waiting for device" & dev-disk-by\x2duuid.swap/service failed with result dependency/timeout?
My server (running Centos Stream release 8) stopped responding to http yesterday evening. I tried to SSH in to it this morning, with no luck, just an empty hung PuTTy screen. I did a automatic reset ...
- 1,148
1
vote
1
answer
1k
views
High process memory usage (VmRSS) on rocky 8 vs. centos 7.7 for essentially everything
We're migrating some servers from centos 7.7ish to Rocky linux 8, and we're finding just about every process is using 20-50% more memory, causing machines to lock up.
For example, sh on centos:
# sh -...
- 61
0
votes
0
answers
382
views
OpenVPN TLS handshake fails, no log messages
I have set up an OpenVPN server (version 2.5.9) on CentOS (Stream 9) and several clients. Unfortunately, clients always log this error message:
2023-04-14 09:24:21 TLS Error: TLS key negotiation ...
- 140
0
votes
1
answer
7k
views
HTTP request sent, awaiting response... 404 Not Found
Little Background:
My main OS is windows 10. I am using vmware workstation pro. I've installed centos 7 on it.
When I try to install either google chrome or mysql,I am getting the above mentioned ...
- 101
4
votes
2
answers
5k
views
Leapp always fails upgrade: more space needed
I'm trying to upgrade a SL/Centos 7.9 to AlmaLinux with Leap. I followed the instructions here but it always fails with
At least 3178MB more space needed on the / filesystem.
I'm increased the disk ...
- 233