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).
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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. ...
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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
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Why is 720p Firefox/Chrome browser video on CentOS7 Linux poor when viewed in fullscreen mode?
Why is CentOS7 Linux Firefox/Chrome 720p video so blurry in fullscreen?
I'm watching videos on Udemy and have a course that is only 720p videos. Its 720p isn't very legible at normal size or stretched ...
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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 ...
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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 ...
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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 ...
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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.
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How do I monitor my servers using "monit" tool in Linux?
I've configured monit and it's up and running, but now say I want to monitor ip address 192.168.168.150 using monit tool, how'd I do it?
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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 ...
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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 ...
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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 ...
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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 ...
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strip could not create temporary file to hold stripped copy: cause of error unknown
I am trying to run a singularity container on a CentOS7 host, which contains an application with Qt5 dependencies.
I am experiencing a error where libQt5Core.so.5 can not be used because of an ...
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How to change the shortcut of Pop up command window in Centos7?
I am using a device that runs Centos7. I want to change the shortcut of this pop up command window:
It allows you to run commands/open files/applications. Currently the command to open it is Alt+F2. ...
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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 ...
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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 ...
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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 ...
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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(...
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Clone CentOS 7 into an ISO image
How can I create a clone of my CentOS 7 server(with all custom apps and settings included) and create an ISO image out of it?
I am trying to move the physical server onto the cloud and needs a ISO img ...
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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 ...
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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 ...
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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 ...
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Advanced logrotate setup for Apache on Centos 7
I am attempting to configure logrotate to manage my Apache log files. As mentioned in the title server is running centos 7.
To get ahead of the usual questions, Yes - I have read the man pages and ...
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Having just taken the latest updates to CentOS 7, many GUI applications are crashing on startup
For instance UPM is a password manager based on java. When it starts now, the UI is completely inaccessible. Clicking close does nothing, even killing from the process manager kills the underlying ...
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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 ...
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SSL handshake failure on API server with port forwarding
I have an API server(python flask) running on a cent os v7 VM in an internal network(multiple VMs installed on a machine) running on internal IP, let's say 192.168.100.100. Our IT/network guys has set ...
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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: ....
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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 ...
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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 ...
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Centos7 password based Authentication failing
Successfully joined AD server:
id user@example.local
Got the results so the user exists:
ssh user@example.local@XXX.XX.XXX.XXX
Error:
debug3: send packet: type 50
debug2: we sent a password ...
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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?
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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. ...
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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 ...
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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 ...
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Apache shows 404 but on localhost Spring app works
I've installed Tomcat 9, Apache httpd 2.4.6, and Let's Encrypt for SSL, on Centos 7 on the Google Cloud instance. It's the second time I'm doing this configuration so I was using the similar ...
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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 '...
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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 ...
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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 ...
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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.
...
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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
...
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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 ...
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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 ...
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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 ...
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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 ...
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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/...
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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 ...
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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....
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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 ...
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Intel NIC not found on ProLiant CentOS 7 install
I am trying to install a CentOS 7 distribution on an HPE ProLiant DL360 Gen10 server. Installed is an Intel X520 2P 10GB NIC in a PCIe slot.
On the CentOS Installation screen, in the Network & ...
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How can I get my CPU to run at maximum speed by circumventing CPU scaling?
I am running CentOS 7 (7.9.2009) (kernel 3.10.0-1160.49.1.el7.x86_64) on a rather old laptop (Lenove T61) with a dual core CPU (Intel(R) Core(TM)2 Duo CPU T7300 @ 2.00GHz). The driver for CPU scaling ...
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