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Questions tagged [ubuntu-20.04]

Ubuntu 20.04, named "Focal Fossa" is a Long Term Support release of Ubuntu Linux (released on April 23rd, 2020). Note that http://askubuntu.com is specifically dedicated to Ubuntu questions.

0 votes
1 answer
46 views

On Jenkins, how can we hide the Jetty version in response headers?

When we hit "http://JENKINSIP:8080/loginError" in the response header Server: jetty(10.0.20). how can hide version from header. JEKINS-: Version 2.452.2 and 2.375. JAVA-: openjdk 11.0.23 ...
Vicky Dhindsa's user avatar
0 votes
0 answers
64 views

Resolving Driver Issues in Ubuntu 20.04 with Real-Time Kernel

I have Ubuntu 20.04 with Kernel 5.15.0-113, and I installed the real-time kernel version 5.9.1 because I couldn't find the real-time version for my current kernel. The installation went well, and I ...
keayvan keramati's user avatar
0 votes
0 answers
42 views

internal error: failed to start qemu binary /usr/bin/qemu-system-x86_64 for probing : qemu-system-x86_64 : cannot create PID file

Cannot Start VM. observing following error internal error: failed to start qemu binary /usr/bin/qemu-system-x86_64 for probing : qemu-system-x86_64 : cannot create PID file
Venkateshwaran Thirugnanam's user avatar
0 votes
1 answer
29 views

Ubuntu 20.04 LTS Signing

Is it possible to sign Ubuntu VM Images? I am using EC2 for my environment. My team needs signed VMs for maintaining and ensuring integrity. I am aware of Container signing and I have also worked on ...
Shivkumar Mallesappa's user avatar
0 votes
0 answers
41 views

Ubuntu 20.04 - How to find out how memory is used

I have an Ubuntu server I use to run a web application through Docker. The image below shows the memory consumption (top—o %MEM) of the server with NO DOCKER CONTAINERS RUNNING. So, besides the memory ...
Sig's user avatar
  • 171
1 vote
1 answer
120 views

Upgraded from 18.04 to Ubuntu 20.04 - microk8s local DNS resolution stopped working

I have a server that started out on Ubuntu 16.04. I'm trying to get it current so I did an upgrade from 16.04 to 18.04 (Which was mostly trouble free) I let that run for a day to make sure everything ...
irwinr's user avatar
  • 21
0 votes
1 answer
531 views

Supervisor ubuntu 20 error: Cannot open an HTTP server: socket.error reported errno.EADDRNOTAVAIL (99)

I am trying to run supervisor as following: azure@G01:~$ sudo supervisord -c /etc/supervisor/supervisord.conf I tried to trouble shoot as mucg as I could with no results. I do not know what the issue ...
Dev Dev's user avatar
  • 31
0 votes
1 answer
76 views

Apache2 restart does't implement PHP changes, server reboot does though

on my Ubuntu 20.04.6 LTS server with Apache/2.4.41 I needed to change post_max_size and upload_max_filesize for my new PHP 8.3.4 installation I added phpinfo(); in a file called phpinfo.php I got the ...
Curious User's user avatar
-1 votes
1 answer
359 views

How can I get SSH to work?

My pc is running Lubuntu 20.04. I am trying to ssh to a raspberry pi 4 running Ubuntu Server 22.04. I have followed the setup instructions but see the following: ssh -v [email protected] OpenSSH_8....
user1759557's user avatar
0 votes
1 answer
13k views

curl: (28) Failed to connect to X.X.X.X port 80: Connection timed out

I'm getting this error: curl: (28) Failed to connect to X.X.X.X port 80: Connection timed out When I run this: curl X.X.X.X I'm curling a specific IP address and it fails on both port 80 and 443. I ...
ShadowAccount's user avatar
0 votes
0 answers
28 views

Set Default Policy for all of user on kerberos ubuntu

I am confused when creating a password policy in kerberos ubuntu, what I don't know is how to make the policy that we have created become the default and how to make the policy apply to users that we ...
kyors's user avatar
  • 1
0 votes
0 answers
90 views

MariaDB 10.3 vs 10.4 performance degradation

We're migrating to a new server and noticed some weird performance degradations. Old server is Ubuntu 18.04 running MariaDB 10.3 (10.3.27-MariaDB-1:10.3.27+maria~bionic-log); new is Ubuntu 20.04 ...
V1pr's user avatar
  • 5
0 votes
1 answer
303 views

opendkim not singing my outgoing emails ubuntu 20.04

i'm following this tutorial to integrate opendkim and sign my emails,i'm not much in ubuntu but i configured everything as the tutorial but the emails is sent without dkim signing I'm hitting the wall ...
Amir Eix's user avatar
0 votes
2 answers
346 views

Ubuntu 20.04 server ignores incoming postfix connections on IPv4, accepts IPv6

I've hacked my server to bits and now I need help. Everything was working, but I think these issues started when I tried to add a VPN server to this server to test some items at work. That process ...
Pants's user avatar
  • 3
0 votes
2 answers
144 views

Is it safe to expose monitd http server to the world

I'd like to use monitd for monitoring my webserver. I read it has built in http server. By default it is set to run on 2812 port. Is safe to open the port on firewall and view it via a browser?
Łukasz Korona's user avatar

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