Questions tagged [server]

Questions related to Ubuntu Server, and server-related packages.

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using Ubuntu Desktop OS as always on SSH server

I am trying to use a Ubuntu Desktop (on a laptop) as an SSH server that should always be on and accessible over the local WiFi network. However, I am facing a series of seemingly unending issues. I ...
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scp Permission denied (publickey) when trying to copy local file to remote server

I am trying to copy a backup of my local postgresql database into our staging server, but it is being rejected. Locally I'm in a virtual machine and I passed the backup file through the shared folder,...
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Apt got stuck in the unpacking stage

I use ubuntu server 18.04 and I issued the following command : sudo apt install libboost-dev and it suddenly got stuck in the unpacking libboost1.65-dev:amd64 without any warning or any special ...
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Ubuntu /run/ directory disappears during boot - 12.04 [closed]

In ubuntu 16.04 and higher there is a file in /usr/lib/tmpfiles.d that handles directory creation during boot. But how does 12.04 handle it? I can't find /usr/lib/tmpfiles.d in 12.04. I want be able ...
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Can a fresh installed Ubuntu 20.04 LTS Server run without snapd?

I know, that there ist this Question: Can a vanilla Ubuntu 16.04 LTS Server run without snapd? But the situation is different on Ubuntu 20.04 LTS Server. If I run snap list on fresh installed VM I ...
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„-bash: fork: retry: resource temporarily not available“ on any command

first of all, this is my first post, so pls excuse me for any mistakes. My Ubuntu server is making some trouble. I cant run any commands from time to time. I get the error messages „-bash: fork: retry:...
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20 views

ubuntu server 18.04 LTS connection refused when accessing internet

I am getting the error connection refused on ubuntu server 18.04 LTS when I try to access the internet, by this I mean : when I try to send e-mails, (using mailcow) when I try apt-get update etc. This ...
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Ubuntu Memory is consumed

I have an Ubuntu 18.04 virtual server hosted on DigitalOcean, it is updated with all the latest updates and fixes, I started recently to notice that the memory on the server is being consumed rapidly, ...
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14 views

how to start recovery mode for Ubuntu Server 18.04.3 LTS when connecting through SSH?

I have a virtual machine running Ubuntu Server 18.04.3 LTS and I need to modify some settings using the recovery Mode. I have to connect through a VPN using SSH (Putty), so I'm not sure what the ...
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Ubuntu 18.04 server doesn't detect eth0 in VBox

I have an ubuntu server 18.04 installed in VirtualBox and I attached a NAT network adapter to it . After the installation process finished , I couldn't access the network at all and ifconfig only ...
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Slow pip installation issue possibly related to DNS configuration

I am a total newbie here, so pardon my limited knowledge on network configuration. Context I'm using Ubuntu 18.04 LTS and it is a bash shell I am using not a disk image. So, certain commands may ...
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Ubuntu server 20.04 install LAMP on server without internet

We have an air gapped server that we are installing 20.04 server but see no way of installing a LAMP stack without internet and have found nothing in the docs. This installer is not the same as the ...
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Ubuntu Server 20.04 running TightVNCServer > Main Menu in MATE desktop keeps closing by itself when clicked on from VNCViewer client

I am running Ubuntu Server 20.04 on a Raspberry Pi 4. I installed TightVNCServer so I could access the MATE desktop from VNCViewer on a Windows 7 laptop. The Pi 4 is overclocked to 2Ghz and has 4GB ...
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IPtables not blocking certain ports

I've my iptables configuration to allow some communications, but I've noticed that I do not have a specific rule to allow traffic using port TCP 993 (used by my email client). When I open my e-mail ...
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23 views

Ubuntu Server don't boot anymore

I have an ubuntu server, that runs since a few month, and today, it tells me that i could run a command to update ubuntu. I did And since, my server refuse to boot anymore. Here is the screen i have ...
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How one can prevent NIS from exporting users to client machines?

How one can prevent NIS from exporting root users and other system users on server to the client machine while setting up the NIS?
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redis-server.service failed with result 'resources' - more listed inside [closed]

When I try to atp-get upgrade and then apt-get autoremove I get a redis-server error. How can I fix this? I tried to find a solution for this, but all of them are Ubuntu fixis. My OS: Debian Linux ...
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Ubuntu 20.04 multipath configuration

I just installed a new Ubuntu 20.04 server as a virual machine on an esx-Server. When I look into systemlog I see lots of multipath entries. multipathd[651]: sda: add missing path multipathd[651]: ...
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Cannot use command “maas-region” on ubuntu 20.04. ; getting “distribution” not found error when trying workaround

I have installed maas following the Ubuntu Openstack Cluster Installation Site, but when I get to sudo maas-region apikey --username=admin I get error sudo: maas-region: command not found ...
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45 views

20.04: Can't run forge server

A problem occurred running the Server launcher.java.lang.reflect.InvocationTarge ...
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9 views

Cirrus Scale old half height server RJ45 network device not available on Ubuntu 20.04 install

I just installed Ubuntu 20.04 ARM on an old Cirrusscale server, and the network device handle for the primary RJ45 connector does not come up, so I cannot simply plug into the LAN I am on. This is a ...
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Port Forwarding Ubuntu to Debian server

I have xxx Ubuntu 18.4 Desktop which is connected to the Internet and have a Debian Server which is not connected to the Internet directly but hosting a cacti server on the same network with different ...
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20 views

Missing ipmi Device (Remote Access Card) / ipmitool Failue: Could not open device at /dev/ipmi0 … No such file or directory

I recently bought second-hand a HP Proliant N36L Microserver, and I'm having trouble configuring it for remote access on Ubuntu Server 20.04 LTS. It came with a HP Remote Access card, but when I try ...
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22 views

R-Pi3b+ diskless PXE boot results in initramfs prompt on diskless device after downloading TLXOS [closed]

I am trying to set up two Raspi 3B+ with a diskless boot option. Our setup is as follows: A 3B+ setup with TLXOS as a PXE server, SD card installed - followed the instructions In the forum. An ...
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37 views

Systemd service stopped suddenly

We have a flask python application that runs normally on terminal without error. We converted it to systemd service(ubuntu), but the problem is that the service runs normally then stopped suddenly ...
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OpenVpn Server on Lubuntu 20.04 - No answer

It's my first time installing OpenVpn Server on Ubuntu. I did it previously on Raspberry, but I found a script that did the job by itself. I only had to open the 1194 port on my router. Now I'd like ...
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12 views

Tkinter doesn't popup a window on Ubuntu server 18.04

I am new to here, I installed tkinter by running "sudo apt-get install python3-tk" on both Ubuntu desktop and server 18.04, and ran below code, desktop version works but server version doesn't popup a ...
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1answer
52 views

How to configure wpa_supplicant in Ubuntu server 20.04

For esoteric reasons I have a server which only has WiFi access to the network. By copying the necessary dpkg files on a removable drive I've managed to install wpa_supplicant. The thing that's ...
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20 views

Where is the root folder of a NextCloud server that is installed on a Ubuntu 20.04 server?

I'm setting up private chat & text on a NextCloud server on a Ubuntu 20.04 server I used this video for setup: https://www.youtube.com/watch?v=1zXnypuu27I It's using the syntax for openSUSE so ...
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How to uninstall OpenVPN Access Server?

I need to remove OpenVPN Access Server completely from my system. I installed it with root access(sudo -i) using the following commands from the OpenVPN website: apt update && apt -y install ...
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VSFTPD fails to start

I have setup VSFTPD on a server with UBUNTU 18.04 on a server with both ipv4 and ipv6 support and the service is running as expected. I have then ported the same configuration to a server with only ...
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10 views

Proxy 407 Authentication required

I have Ubuntu 16.04 server on vmware esxi. I need Ubuntu to connect to internet trough proxy with domain account. I set http_proxy="http://domain\username:password@proxy-hostname:port" in /etc/...
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shared folder for scanner

I have worked with ubuntu 18.0 and sharing the folder for the scanner is done easily, without any problem and works perfectly in sync with the network scanner. When updating to ubuntu 20.04, even ...
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68 views

Internal Server Error when running a shellscript to database

For an assignment I'm supposed to take data in from a shellscript and push that data into a database. I have MySQL setup and listening on Port 3000, but when I run the script it keeps repeating ...
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1answer
72 views

How should I make a bug report for the 20.04 server installer?

I've discovered a problem with the 20.04 server installer, where it crashes if the BIOS time is incorrect (in my case, because the machine doesn't have a real time clock battery installed, so it ...
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11 views

xclock not displaying on local computer

I have heard that I can use "X11 forwarding" (whatever that means) to display graphics generated on a remote server on my local machine. Therefore, I followed these instructions (installed Xming, ...
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15 views

How do I block ips from accessing my sever with UFW

I want to try to block my computer's IP (192.168.0.3) as a test from accessing anything on my server, and more importantly, my website, when I use ufw deny 192.168.0.3 it says Rule added, After ...
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33 views

OpenVPN: autonegotiation is unset or enabled, the speed and duplex are not writable

I'm trying to install OpenVpnServer on Lubuntu 20.04. I'm not so expert with Linux, so I make many errors. At last I had an "almost working" OpenVpnServer installation, this is (hope so) the last ...
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1answer
24 views

Samba server permission

I would like to know how can I enable this option to ask every time user name and password when user is tried to access share folder from Linux machine. For instance I have setup a shared folder on ...
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15 views

apt install lamp-server - MySQL password

I have installed lamp-server via command apt install lamp-server and it works, as I see in the web browser. But I am not able to log in to mysql as root user. If I try to run mysql -u root -p ...
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56 views

can't install wordpress on ubuntu 20.04

so i am trying to install wordpress on ubuntu 20.04 after downloading the tar file and extracting it to the /var/www/html folder, whenever i am trying to access the localhost its not working. i am ...
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17 views

What happens when the server started by xinetd exits?

I'm just learning about xinetd and am wondering what happens when the server that xinetd has previously started exits or crashes. Is the connection torn down? Is there any chance it could be left up ...
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1answer
40 views

Ubuntu Server on-line manual incomplete

I've realized that man in Ubuntu Server (Bionic) is incomplete if compared with Ubuntu Desktop (Bionic) version. I searched for some system calls like fork using the command man 2 fork and it return ...
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25 views

ssh connection problem: unusual behaviour

I'm perplex about this problem with my ssh connection to my ubuntu server (perplex = not an expert, of course): try to connect my iMac this morning as usual (through LAN): not working. times out ...
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Debian cant get back to starting line after saving [closed]

After saving & pressing y the terminal goes off & can't get to the starting point so that i can execute a command. I feel like resetting to factory since I can't even do a backup. Someone help ...
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Framebuffer problem with Raspberry Pi Ubuntu 20.04 Server and Adafruit 5" display

I've been looking non stop for a day and half now but I'm new to Linux and feel completely stuck. I'm using: Raspberry Pi 4 Ubuntu 20.04 Server (for arm-64) Adafruit 800x480p 60hz 24-bit HDMI ...
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2answers
17 views

Slave nics in a bond are getting an IP from DHCP, despite netplan config?

I'm on Ubuntu Server 19.10, using netplan, and I have 4 bonded nics in a balance-rr bond. It is configured in Netplan as a static IP. After applying netplan or rebooting I cannot ping the gateway. ...
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28 views

Ubuntu Studio Shared Folder Question

I've been using Ubuntu and Ubuntu derivatives for quite some time now. Probably once a year or so, I prefer to do a clean install and "start everything over". I have a set of scripts/lists/...
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48 views

How do I debug DHCP?

UPDATE: The DHCP in the camera does not work as expected and requires a static IP. However tcpdump is your first line of defense, see checked answer below. I have the following setup: NVidia Xavier ...
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38 views

Bare metal backup

I'm renting out some bare metal machines and am finally starting to automate the process of provisioning. The idea is to setup a few bare metal machines and manage them via MAAS. I would like to ...

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