Questions tagged [server]

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

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120 views

“allow hosts =” wont work on and Windows 10

I have Ubuntu server 16.04.1. I have shared saome folders so that everyone can access it, but I want one folder to be accessible to only some computers. For me was best way to do this using "allow ...
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23 views

Ubuntu 18.04 Server Silently Becomes Unresponsive

I have a small headless server, running Ubuntu 18.04. After some time (e.g. a day or two) the server becomes unresponsive; no SSH access, no ping response, no disk activity when the power button is ...
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47 views

18.04 and 19.10 Server randomly freeze

I'm new to linux and I hope you can help me. I got the issue that my Ubuntu server 18.04 and new installation 19.10 on the same machine is freezing randomly. I can only recover my system by pressing ...
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18.04 server: AWS slow network upload

I have an AWS EC2 instance of Ubuntu 18.04.3 LTS. When I created the instance, the network was 1 gbps up and down. After using it for awhile, the upload is stuck at 4.2 mbps, but with 1 gbps download....
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45 views

Cant install java jdk 8

So i just got my ubuntu server up and running. Now i am trying to install packages using "sudo apt-get" i used the command "sudo apt-get install openjdk-8-jdk" And it wont work. it give me this error ...
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32 views

How do I enable screensharing from an Ubuntu terminal without UI?

I'm trying to connect a remote server with ubuntu-desktop installed to my local computer. I keep getting the below in Remmina's debug window: [VNC]ConnectClientToTcpAddr6: connect [VNC]...
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154 views

Webapp fails with net::ERR_CONNECTION_REFUSED with Ubuntu 18.04.4 Server Edition but works fine with Ubuntu 18.04.4 Desktop

I put in this repository a tiny testing webapp: https://github.com/marcoippolito/testproject If I git clone it in a laptop using Linux 5.3 Ubuntu 18.04.3 LTS (Bionic Beaver) with this environment: (...
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22 views

Setting up jailed SFTP access on 18.04

I'm trying to set up a ubuntu server with SFTP access for numerous users that are jailed to their own directories, and I am having a really difficult time getting it to work. It seems that things work ...
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1answer
65 views

When installing ubuntu server alongside windows 10, I cannot select the partition that I want. Why is that?

When I try to install Ubuntu Server on a 150GB NTFS partition that I have on my hard drive, the installation will not allow me to continue. It will only continue if I mount it the filesystem at /. ...
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1answer
33 views

How to install snapd on ubuntu 18.04 server

I would like to install https://microk8s.io/ on my VPS server based on Ubuntu 18.04 but I've got the following error message: apt-get install snapd Reading package lists... Done Building dependency ...
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21 views

Could not resolve host github.com when trying to get rtlwifi_new.git

My ubuntu system doesn't have a wifi adapter, so I was trying to clone the repo "https://github.com/lwfinger/rtlwifi_new.git". But it showed the error : "Could not resolve hostname github.com " I don'...
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64 views

Unit systemd-resolved.service is masked

I was trying to restart the systemd-resolved.service with the command: sudo systemctl restart systemd-resolved and got the error message: Failed to restart systemd-resolved.service: Unit systemd-...
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22 views

Setting network address for 2 different interfaces with dhcp and static

so, I have set an IP for both interfaces (enp0s3 and enp0s8), the enp0s3 is using DHCP configuration and the enp0s8 is using static configuration. auto lo iface lo inet loopback auto enp0s3 iface ...
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1answer
40 views

unable to connect to internet with osboxes.org ubuntu server 19.10 image on virtualbox

I booted (in virtualbox) an ubuntu 19.10 server image obtained from here To enable networking I tried to add a netplan configuration. (Adapted from here) In short I created the following file: /etc/...
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18 views

Internal network does not work as it should (Virtual Box)

(VIRTUAL BOX)I have a ubuntu server that has two network interfaces, one of bridge adapter and another in internal network, the problem is that you want to use a service within the internal network, ...
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33 views

Messed up install of Unbuntu desktop. Now, USB boot attempts result in error message [duplicate]

EDIT: Forgot to add that, while I initially installed desktop, I am now attempting to install server instead, as that's actually what I needed the whole time. The same error message comes up ...
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39 views

Getting ERR_CONNECTION_REFUSED while apache2 runs

I'm having troubles with a virtual host. I'm getting ERR_CONNECTION_REFUSED in the browser. Most answers say it is due to apache2 not running - But in my case it's running, other virtual hosts do work ...
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64 views

update or upgrade ubuntu pc from another computer on the local workgroup network

How to share updates between ubuntu computers on the local workgroup network Any option like windows 10 os?
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24 views

ImportError: /usr/lib/x86_64-linux-gnu/libstdc++.so.6: version `GLIBCXX_3.4.22'

I install python flow --model cfg/yolo_1_class.cfg --load yolov2.weights --train --annotation train/annotations --dataset train/images --epoch 500.
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305 views

OpenJDK revert from 1.8.0_242 to 1.8.0_221

How can I revert from OpenJDK version 1.8.0_242 to version 1.8.0_221? I tried to download 1.8.0_221 tar archive but no links seems to work.
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81 views

Drivers Raspberry pi 4

I recently installed the latest version of Ubuntu IOT for Raspberry Pi 4 (Ubuntu Server 19.10.1) and am experiencing difficulties accessing some of the on board features. I am not able to use Wifi/...
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1answer
76 views

MySQL root password settings and sudo mysql VS mysql

My question may found duplicate as even I search a bunch of things, but as very much new to MySQL and little old to Ubuntu I am working on raspberry pi and trying to install the MySQL server to ...
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19 views

Mail Delivery Agent suggestion for Ubuntu Server 18.04 and postfix

first of all i don't know if it's an off-topic question; if so, i will remove it. Then, i have a running ubuntu server 18.04 setted up with postfix and mailutils to send and receive email; i would ...
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70 views

Ubuntu Server WIth Gui And Nas

I am kind of new on Linux and I would like to share with you my thoughts. I want to install NAS on Ubuntu. I am with Debian and OMV but I don't quite get it. So I would like to give a chance to ...
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25 views

Group members can't remove folders but have write permission

I added user mahsa to group www-data, this user can upload or modify files inside /var/www but can not rm. The www folder's permission is 775 and it's ownership status is www-data:www-data, so ...
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1answer
36 views

Display a Server Desktop To Remote User

I installed Ubuntu desktop to my AWS server, and it boots successfully. I know this because AWS lets me take an instance screenshot, and it shows the log-in screen of the desktop. The only problem is, ...
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29 views

Run fim as a systemd service

I want to display an image after the splashcreen from plymouth So I created a new systemd service under /etc/systemd/system/splashscreen.service [Unit] Description=Splash screen After=network....
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12 views

Passing custom vars to preseed-file i.e. individual names for hosts and volume groups

) my first question here is about passing custom vars to preseed configuration for the individualization of installed machines on 18.04.3 LTS I want to give a "temporary hostname" to the machines, ...
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31 views

proftpd with tls wont respond to my domain [closed]

im configuring proftpd with tls. in filezilla if i type localhost in server it will connect, but as soon as i type my domain, wich is pointing to my router, wich have ports 21,22 and 990 opened and ...
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0answers
35 views

Installing Server

New to Ubuntu and trying to install a server. I am getting an error when I get to this step of the process add-apt-repository \ "deb [arch=amd64] https://download.docker.com/linux/ubuntu \ $(...
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15 views

stopeed receiving emails on ubuntu server

we are having ubuntu server for email service on digital ocean. it was working perfectly but recently one of team mates change setting in dns and we are not receiving emails. I am new in ubuntu ...
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74 views

How to make VPS more secure with UFW?

I have 3 VPS based on Ubuntu 18.04 server OS and would like to open particular ports on each servers. The ports, that I would like to open are: Then let's take a look on the environment: As you ...
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60 views

Only last NIC in netplan config is accessible

Server has 4 NICs and one bridge (irelevant for discussion) configured by netplan. After running netplan apply --debug I get following merged config: DEBUG:Merged config: network: bonds: {} ...
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96 views

How to change Kernel Train?

I am on Ubuntu 16.04 server edition which uses the 4.4.0-* kernels by default, however I need the desktop version (4.15.0-* ) kernels for reasons of nvidia compatability. I was able to install the 4....
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16 views

How can i fix this permission issue for homedir on remote-server?

For my 18.04 client, i saved the homedirs on a remote samba-server, without problems. the authentication is ldap based. Now i have been set up a new Ubuntu-Client and the file/folder-permissions looks ...
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20 views

Server URL Timeout via Browser

I can't seem to find a reason why I can't access a certain URL/port on a server... Would appreciate any suggestions where to look :) It has a newly installed CrashPlan server, which has a browser URL ...
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0answers
42 views

MYSQL not MYSQLI [need version]

i have ubuntu 18.04 LTS Server, can someone please provide me version of mysql-server (not mysqli) ,phpmyadmin,php and apache2 that works on mysql , well i need this for my old website for home use ...
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28 views

scalable nginx with network filesystem and permissions

So lets say I have a bunch of servers accessing to shared filesystem. These servers does not have public ssh access but run user php code with nginx. I also have machine that users can SSH into and ...
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28 views

Installing Ubuntu Server 18.04 on Intel board S500VSA

I am relatively a newbie level user on Ubuntu. I have a few laptops that run Ubuntu desktop and I was able to get them going (with some forum searching help). However, this time all my searches did ...
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0answers
30 views

server in own network reachabal but not over externel ip

ok i think i have to explain myself. Im running an old build of Ubuntu (18.04.3 lts) but i was to lazy to update. I am now trying to build a homeserver of this mac mini on which ubuntu is running. I ...
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1answer
59 views

No domain on LAN, local DNS fails

At the moment, I am using a router which has a domain name as part of its settings. Two days from now, I change ISPs, which means a router with no visible domain name in settings. In preparation for ...
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1answer
44 views

exportfs must be redone after every boot

Server N (server 18.04.3 LTS) has an /etc/export file with three simple entries. Server B (server 18.04.3 LTS) does a straightforward NFS mount command, mount -t nfs N:/exported /nounthook. If I ...
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16 views

NVIDIA x server settings not found Ubuntu 18.4.3

I don't know much about Ubuntu/use but anyways. Yesterday it runs well and the next day it turns on but the settings in NVIDIA are all gone but in software & Updates it's on the NVIDIA-390, There ...
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1answer
173 views

System refuses to suspend

Lubuntu 18.04 (lxde) here, upon AMD Epyc 7282. Kernel 4.15. The system is stable and works flawlessly, but id does refuse to suspend. If I try to suspend it, the screen blanks, but the system does ...
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41 views

can't connect to filezilla (and other ftp clients) server using ubuntu 19.10

i tried different ftp clients, different connection modes. and even different ftp adresses. but i just cannot connect to any ftp server using my ubuntu 19.10 and external ftp clients. is there ...
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1answer
50 views

Ubuntu 18.04.3 LTS WordPress Failing to Save Certain Settings in Database (Occurring with Various Sites)

I'm unable to deactivate or activate plugins on a selection of my websites but not all of them. I can't spot any similarities between the sites that have the issue and the sites that don't. I'm ...
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2answers
168 views

Copy over a large number of files with new names

I have a large number of files (tens of thousands) I need to copy over from /dir1 to /dir2 but the name of the file must change as such: OLD NAME ---> NEW NAME filename.txt ---> bob_filename_1253....
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1answer
40 views

mv: cannot stat 'wordpress/': No such file or directory

I am stuck. For two days I have been trying to install Wordpress on my VPS (Ubuntu 19.04). Everything is going well to the point where I want to move wordpress to a "wordpress" folder. Both folders ...
0
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1answer
45 views

Interaction within a shell script

I am trying to install docker on my ec2 instance via a shell script. I have this in my shell script sudo apt install docker.io this is failing as I get a prompt After this operation, 258 MB of ...
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0answers
23 views

Nginx certbot breaks IPv4

I wanted to setup https using Nginx and let's encrypt on my ubuntu 18.04.3 server, so I followed this tutorial: https://www.digitalocean.com/community/tutorials/how-to-secure-nginx-with-let-s-encrypt-...