Questions tagged [centos-7]
Version 7 of CentOS Linux distribution. The CentOS Linux distribution is a stable, predictable, manageable and reproducible platform derived from the sources of Red Hat Enterprise Linux (RHEL).
708
questions
1
vote
0
answers
21
views
how to route if users from (10.70.100.0/24) want to use IPPBX then it would use the eth1?
I run CentOS 7, my ifconfig as follow:
eth0 serves LAN users, and eth1 is the IPPBX, how to route if users from (10.70.100.0/24) want to use IPPBX then it would use the eth1?
eth0: flags=4163<UP,...
0
votes
0
answers
120
views
Change IPSec IKEV2 VPN Default Ports 500 & 4500 To Anothers
For some reason OpenVPN is working on my local machine very well, But IPSec IKEV2 VPN not & it only works when OpenVPN is connect.
I have a domain for IPSec IKEV2 VPN & in local machine vpn is ...
0
votes
0
answers
71
views
StrongSwan IPSec VPN - IKEv2 - LetsEncrypt Certificate Issue (building CRED_PRIVATE_KEY - RSA failed, tried 10 builders)
StrongSwan IPSec VPN - IKEv2 - LetsEncrypt Certificate Issue (building CRED_PRIVATE_KEY - RSA failed, tried 10 builders)
I followed the link below for setup IKEv2 VPN Using Strongswan and Let's ...
0
votes
0
answers
20
views
CentOS 7 : TCSH Shell : How to use tab key for autocompletion but without increasing terminal log history
Please forgive if this has addressed before. I couldn't find the solution or I may not be able to phrase the question correctly.
This is my first question to the community.
I am using CentOS7 and tcsh ...
0
votes
0
answers
66
views
Centos 7 yum update issue
I am getting the below error while doing the "yum update" in centos7. I tried all other ways to fix but nothing is working. Please find the below full error for your information.
Please find ...
0
votes
0
answers
135
views
yum updates failing with primary_db.sqlite: [Errno 27] File too large error
I am running CentOS 7.9 and I added a nvidia repo for yum to update the hpc_sdk. yum was working fine before this, but now I get the error
Error: Error writing to file /var/cache/yum/x86_64/7/base/...
0
votes
2
answers
1k
views
Giving access to (read / write) to other users on nfs without root previliges
I am working on a CentOS server without root privileges. I am trying to share a specific folder on the network with another user.
I have already tried 'setfacl' with no success (resulting in '...
1
vote
1
answer
2k
views
Installing keytool without JDK
I am trying to install keytool in a docker image based on centos but I get an error.
Example to reproduce Dockerfile:
FROM centos:7.9.2009 ...
0
votes
0
answers
101
views
Duplicate entries in lsblk output
This is my lsblk output:
lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 500G 0 disk
├─sda1 8:1 0 1G 0 part /boot
├─sda2 8:2 0 ...
5
votes
1
answer
781
views
Iptables Fail to block inbound from specific ip
Hi I Have a online server which i use like gateway and iptables is acting weird
-A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
-A INPUT -p icmp -j ACCEPT
-A INPUT -i lo -j ACCEPT
-A INPUT -i ...
0
votes
1
answer
2k
views
How to convert a private, public PEM files and it's cer file to a fullchain and private key?
I have 3 files, a private pem cert, a public pem cert and a file containing CA's that signed those. (it's in plain text). I am attempting to set up grafana which requires an rsa private key, and a ...
0
votes
1
answer
492
views
Centos 7 - ping (connect: Network is unreachable)
I set up a CentOS virtual machine, it is connected to my network, and I tried to ping other machines but nothing worked. Tried to check other machines, they among themselves without problems respond. ...
0
votes
1
answer
336
views
How do I prevent systemd from running my timer after reboot
I have the following oneshot service+timer :
$ systemctl cat stop_syncro.service stop_syncro.timer
# /usr/local/lib/systemd/system/stop_syncro.service
[Unit]
Description=Service d_arret de la Synchro
...
0
votes
1
answer
183
views
SystemD timer error on CentOS7 : Failed to parse calendar specification, ignoring: Mon..Sat *-*-* 18:00:00
My timer is rejected by the system on CentOS7 :
$ journalctl -u synchro_ADN_To_Scality.timer --no-pager | sed 's/^.*systemd.1.: //' | sort -u
-- Logs begin at Thu 2023-04-06 10:25:28 CEST, end at Thu ...
0
votes
1
answer
433
views
Unable to customize command prompt after installing oh-my-posh Theme on Linux CentOS
I'm using oh-my-posh theme to customize my terminal. I want to configure my command prompt adding more details but it doesn't work after installing the theme. Screenshot:
Changing the command prompt ...
9
votes
4
answers
2k
views
How to resize an animated webp?
I want to be able to change the size of a dynamic webp.
Sample picture. I found this website to do just that.
So how can I implement something similar in my own program?
I tried using ImageMagick7 or ...
0
votes
1
answer
63
views
Need to restart mysql server, but I don't have root access: what are my options?
The server admin is ill and unreacheable, I have virtual server accounts. The mysql server crashed, and have no backup. The system is a centos 7 with virtualmin.
0
votes
1
answer
160
views
Certbot frequently/always fails in cron with a hostname mismatch
Update 2023-05-06: Yep. Looks like CentOS7's NetworkManager overwriting /etc/resolv.conf. Haven't had an issue since disabling it.
Update 2023-04-20: It looks like CentOS7's NetworkManager is the ...
0
votes
1
answer
49
views
Server re-hosted, needs to update new IP address in DNS
Our Centos7 server was relocated to a new building and the IP address changed. Now how do I configure the server so all traffic gets routed to the new IP address?The domain name is still the same. The ...
0
votes
0
answers
51
views
Centos7 reboots with rescue image
On boot Centos7 system comes up using rescue image. I would like to repair this issue and continue use of this disk if possible. I'm aware of Centos7's June 2024 EOL and Rocky is probably in my ...
0
votes
0
answers
243
views
Linux machines on VM routing between two subnet
To make a lot of tests i have several VM, one has two interfaces but it's possible it receives more. One interface uses NAT protocole to connect to internet, as i use VMWare, the other is on lan ...
2
votes
0
answers
247
views
How to install snmp in ASIANUX Server 7 offline?
I am working with ASIANUX Server7 machine offline and I need to install snmp.
In fact, I downloaded net-snmp-5.7.2-49.el7.x86_64.rpm from other machine and I copied it to the ASIANUX machine and I ...
1
vote
0
answers
359
views
How to disable IPv6 on a logical/vlan/sub interface?
On Linux CentOS7, sysctl fails disabling IPv6 on a logical/vlan/sub interface :
$ ip -6 -o a show dev bond0.53
20: bond0.53 inet6 fe80::b283:feff:fee6:ba1/64 scope link \ valid_lft forever ...
1
vote
0
answers
637
views
cat through ssh does not work, it hangs on "debug2: exec request accepted on channel 0" and scp never finishes
I trying to print a file through ssh on CentOS7 but it does not work somehow :
$ time timeout 60s ssh -vvv SERVER-01 cat /etc/yum.repos.d/CentOS-Base.repo
OpenSSH_7.4p1, OpenSSL 1.0.2k-fips 26 Jan ...
0
votes
1
answer
1k
views
Cannot login through ssh from same lan
I have two CentOS7 servers on the same VLAN. I can ping the destination from the source server but cannot ssh to the destination :
source # ping -c5 destination
PING 172.16.15.101 (172.16.15.101) 56(...
1
vote
1
answer
816
views
IP Address delete - RTNETLINK answers: Cannot assign requested address
I am trying to install a distribution of Kubernetes with OVS. During the installation, the script tries to execute ip addr del 65.109.33.184/32 dev enp41s0, The command fails with Error RTNETLINK ...
0
votes
1
answer
248
views
Configuring IPv4 interaction on an IPv6-only server
I have an IPv6-only virtual server. I can connect to it via SSH or use ping6, but I can't work with IPv4. For example, get a file via wget (Network is unreachable). I have software that cannot be ...
0
votes
1
answer
283
views
set the permissions on all the files and folders within a directory (CentOS 7.0 )
I kind of new to Linux/Centos world, is there any way to set the permissions on all the files and folders within a directory. I know chmod 777 will set permissions on the directory, but if it already ...
0
votes
0
answers
173
views
How can I install Kernel 5.17 on CentOS 7?
On a CentOS 7.9 installation I have some troubles running newer CPUs, e.g Ryzen 5 5600G (with included graphics).
I concluded that it is the Kernel because it boots with certain versions, with kernel ...
0
votes
1
answer
217
views
What is the purpose of files whose name starts with .xauth in Linux home directory? Is it safe to delete them? [closed]
I have lots of files (about 40) starting .xauth. Many of them are a few months old. What is their purpose? Is it safe to remove them?
The operating system is CentOS 7. Some file name examples: ....
0
votes
0
answers
63
views
I see screen on centos 7 after i change resolution
I need to your help emergency .after change resolution my system , restart it , after login its stuck in black screen . . i dont know which part of system change it . plz help me. pc with 4k monitor ...
1
vote
1
answer
4k
views
Centos Apache version is not latest?
From apache website, it seems that latest version is 2.4.54.
I installed apache on my CentOS 7, and when I check the version, it shows that it installed the latest version, but the version number is ...
2
votes
0
answers
131
views
Centos7 password based Authentication failing
Successfully joined AD server:
id [email protected]
Got the results so the user exists:
ssh [email protected]@XXX.XX.XXX.XXX
Error:
debug3: send packet: type 50
debug2: we sent a password ...
0
votes
1
answer
111
views
Symbolic link in rescue mode in centos
I accidentally deleted /bin the symbolic link.
Now, I can not log in to the machine. ln command is not available in grub
How can I fix the symbolic link in grub?
1
vote
2
answers
4k
views
Installing an RPM package on a server without any access to the internet
I have a minimal CentOS server with no access to the internet. Let's call it server A.
My target it to build a shell script file to install a specific version of a local RPM file for an application. ...
1
vote
0
answers
102
views
Trying to create a net new mdadm raid 5 from old raid drives, and failing
Long story short, I have rebuilt a new new centos 7 system. It's a file storage system with 4 identical drives. They used to be part of a raid 5 system, but now that I've rebuild the system I want ...
0
votes
1
answer
529
views
How to avoid a user to list a directory other than his home directory in Linux
I hope this could be possible.
I created a linux user, called newuser, whose root directory is a directory containing a web site application (this is a developer I hired to develop the site). That ...
0
votes
0
answers
29
views
Machine confused as to version of LibreOffice running
I have a CentOS machine that had LibreOffice installed. Natively it is running 5.3, however I manually installed 7.1. When I open a document, The splash screen for 5.3 loads, then the menu bar lists '...
0
votes
1
answer
35
views
Why can't I reach test.example.com from my browser, but ping in CLI can
I just want to test my CA engine from Hashicorp Vault. I've spinned up a local NGINX webserver in docker referring to test.example.com. Unfortunately I'm not able to reach it from my browser with that ...
0
votes
0
answers
436
views
Unable to find the ISO File of Centos 7
I downloaded the CentOS7 from this official source: http://isoredirect.centos.org/centos/7/isos/x86_64/
But I am unable to find the ISO file on setting up the VHD in Oracle Virtual Box.
Could anyone ...
0
votes
2
answers
343
views
Can you transfer SSD with CentOS 7 into a new PC without reinstalling?
I am updating a CentOS 7 desktop from an i5-660 on a Gigabyte H55M board to an i5-12400 on a Gigabyte B660M using the integrated graphics as before. The original installation is at least 10 years old.
...
0
votes
1
answer
1k
views
CentOS 7 to Windows, can list smb shares but cannot mount
I have been asked to check the mount a windows share on a CentOs7 box, before it was working and now not working anymore (no clue from the customer on what could be changed)
Local mount point /backup
...
0
votes
1
answer
410
views
Is it possible to grand SSH access (using username and password) to a Centos 7 machine configured with an user using private key to connect?
first of all I am not a system engineer (I am mainly a software developer).
I am working on a Centos 7 machine and I have the following doubt.
Using MobaxTerm client I can access to this machine via ...
0
votes
1
answer
866
views
CentOS/RHEL: How to disconnect established connection and prevent subsequent connections until reboot?
I'm trying to test a system that uses multiple interconnected hosts, with one of the hosts randomly selected as the leader and the others being members. The members connect to the leader on a specific ...
0
votes
1
answer
315
views
Installing Microsoft Teams for Linux
I am looking for any way to get Teams working on my Linux installation. It is CentOS 7, with Vivaldi and Firefox.
I have tried both the .rpm and the .deb files but discovered that an update to Teams ...
1
vote
0
answers
549
views
CentOS 7 minimal doesn’t get an IP address
I have created a small closed cluster system running on centos 7 minimal and not connected to outside. I have connected all the nodes via a switch.
On startup, node gets IP but a couple of seconds ...
0
votes
0
answers
578
views
SOLVED: cpanel/WHM cannot terminate accounts beacuse of /etc/shadow
i couldn't find the answer after searching. when i try to terminate an account in my WHM, I face the below error
API failure: (XID sngjqn) The system failed to lock the append-only (+a) file “/etc/...
0
votes
1
answer
4k
views
How can I check if firewall is blocking ping from machine belonging to a specific subnet on Linux CentOS7?
I am not a system engineer (I am a software developer) and I have the following problem.
I have this Linux CentOS 7 server. A collegue told me that he can't ping this server from some specific machine ...
0
votes
1
answer
656
views
CentOS stops right after selecting kernel when installing CentOS on VirtualBox using Vagrant and Windows 11 Host OS
I have the following setup:
Host OS: Windows 11 Enterprise Versio10.0.2 2000 Build 22000
Vagrant version 2.2.19
Oracle virtualbox version 6.1.32
If I try to start a CentOS 7 VM config like:
Vagrant....
0
votes
1
answer
515
views
How to map /usr/bin/pdftotext to another path?
I recently installed the poppler-utils:
sudo yum -y install poppler-utils
I did this so I can get pdftotext but when I run pdftotext, I get this:
pdftotext version 0.26.5
Copyright 2005-2014 The ...