Questions tagged [server]

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

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Ubuntu Logs meaning Disconnected, Invalid user and etc. Server attack

Recently installed new server, my first one and almost immediately started to receiving following log, it seems that someone is trying to access my server. Could not find a detailed description about ...
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Cron Permission denied

I'm running a python script called TGubuntu.py. I used ls -l , and the permissions of the script are -rwxrwxrwx 1 ubuntu ubuntu 503 Jan 13 19:07 TGubuntu.py, which should mean that anyone can ...
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18.04 server Network is unreachable

My Server was working great until TimeTrex (A PHP based Payroll Application needed updating for the new Tax Tables. The install went in clean but now the system says the network is unreachable. I ran ...
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1answer
65 views

How to expose VM image outside host machine?

I have created a VM image (Ubuntu 16.04.6) in VBox on Windows and wanted to access it outside the host in my network. I am facing challenge in achieving this. These are the steps i followed: created ...
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19 views

Executable running without sudo, but not with sudo

I have a program in a folder. I have changed its permission using chmod u+x. After that, its running without sudo on terminal, but when running with sudo, it shows error while loading shared libraries:...
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81 views

18.04 in local network as NAS/Headless

At the moment, I just want to use my spare desktop as a storage space. I have a few doubts How to access the server machine over the WiFi network ? It has no monitor, mouse or keyboard connected to ...
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21 views

Shuting down makes power LED blink

I have an Ubuntu 18 server (no GUI). When I shutdown the computer, everything shuts down (power supply, fans, etc), but the power LED is blinking like it's on stand-by. The shutdown line I'm ...
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49 views

Plex keeps needing permission to update library on ubuntu server 18.04

So im still a ubuntu noob so im not very expirienced. I'm currently using plex and everytime i download something and transfer it to the right folder plex can't see the file but when i use chown or ...
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76 views

Setup Ubuntu Server 19.10 with MBR

I am installing Ubuntu Server on an old Mainboard. The Mainboard is not supported anymore and has problems booting from GPT media. I'd like to use the whole disk for the Ubuntu installation. Is there ...
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1answer
50 views

Protected access on VPS to important files

PROBLEM: My website has denied access to files outside of /var/www/html/ directory. DESCRIPTION: My website is running from /var/www/html/ directory on a VPS. I'd like my website to access some ...
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49 views

Allow traffic on Ubuntu Server 19.10

I've installed Ubuntu Server 19.10 on my Raspberry Pi 3B, but I've an issue with a Python script. This script starts an http server on a specific port and I can launch a comand from outside network. ...
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26 views

Netplan and NIC not working after changing DNS

I'm running FreeNas 11.2U7 and had several VMs running Ubuntu server 18.4.3 LTS. I created another server also with Ubuntu 18.4.3 LTS specifically for Pi-hole which is working perfectly. I changed my ...
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Ubuntu for Education [duplicate]

We are new to Linux. We have a small charter school customer that is struggling with a lab solution and Ubuntu seems to be a good choice with a server and thin clients. I bought a used server and 5 ...
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51 views

Cannot get people to connect to me

I am trying to set up a minecraft server on a pc that I have just upgraded from, which I have decided to run linux on. My usage of linux is rough but I feel like people should be able to connect to me....
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68 views

free -m question

When using the free-m (see output in picture) the numbers don't add up. Shouldn't the sum of used, free and available be the total amount of memory?
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31 views

Limit SSH access

I have 3 computers A, B and C. A is at my home. B is server with Public IP. C is remote computer behind firewall with dynamic IP. I want to SSH from A to C but cannot do it because of dynamic IP. ...
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39 views

How to find and unblock specific ip address in ubuntu server 18.04?

Installed Ubuntu Server 18.04 with Apache2 (domain.com), Samba etc. Also have ownCloud. My network internal IP is 10.0.0.100 and external IP 98.x.x.30. When I try to open my website (domain.com) from ...
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27 views

Incorrect IP resolution for host in local network

Summary: I have two computers in my local network: wanat-laptop and gwnt. Both of them running ubuntu 18.04 LTS. When I connect them to network and trying to ping each other: I can do it once from ...
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1answer
65 views

Setting up multiple network interfaces with netplan for a LAN and a direct connection

I am new to netplan and advanced linux networking in general so I am hoping someone might be able to help me figure out my problem. I have two machines, an unraid nas and an ubuntu 18.04 server. Each ...
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50 views

Ubuntu “randomly” gets unreachable (network)

I have a home server running Ubuntu 18.04 (kernel:4.15.0-74), hosting a few Samba file shares and some services. I only access it from the local network. Sometimes the server gets completely ...
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14 views

MaaS Network Configuration

I have 3 Intel S2600WFT servers and each of them have the following hardware configuration. BMC with 3 MAC address 2x 10G ethernet ports 2x 40G ethernet ports I would like to reserve 40G for ...
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45 views

Can't start apache2 after downgrade php version 7.0 to 5.6 in ubuntu server 18.04

Today I just downgrade PHP version 7.0 to 5.6 by reference of this blog: now every time I put apache2 restart command sudo service apache2 start it shows Job for apache2.service failed because ...
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1answer
42 views

Subscribe to mail folders with evolution-ews on an EWS server

I am using the evolution email client with the evolution-ews (github) Exchange Web Services (EWS) integration package to connect to our companys Microsoft EWS server. I have some server side rules ...
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36 views

Durring the installation of cloudmin I get problem with kvm

How can i fix this? Ubuntu 18.04.3 | Webmin 1.940 | Virtualmin 6.08 Package kvm is not available, but is referred to by another package. This may mean that the package is missing, has been obsoleted,...
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39 views

Subdomain reverse proxy with nginx

I'm trying to set up a reverse proxy so I can access my different servers from outside my nat. My /etc/nginx/sites-available/reverse-proxy.conf looks like server { listen 80; ...
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1answer
78 views

Access to ubuntu based server by web browser with GUI

I am thinking about building home server based on Ubuntu (I don't have much experience in Unix systems). I would like to use it because I want to have trustworthy system for my use and keep my private ...
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23 views

Ubuntu Core 16 or Ubuntu Server 16 not booting from SD card on Eagleye 530s (Artik530s)

I understand how to set the boot switches correctly, but cannot get it to boot from SD or USB flash. I have the same problem on both the Seeed Eagleye530s and on Samsung's official Artik 5 ('S' 1GB) ...
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27 views

Must issue a STARTTLS command first when setting up mail server

I am trying to turn my personal pre-existing webserver into an email server so I can send and receive emails using myuser@mydomain.com. I am using Postfix and Dovecot to try and achieve this. I have ...
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16 views

Problems with MAAS execution

previously install MAAS in Ubuntu 18.4, It Works but now is show me this message: could not connect to server: Connection refused Is the server running on host "localhost" (127.0.0.1) and ...
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51 views

Static netplan yaml error messages

strong textI miss the old /etc/network/interfaces means to configure IP addresses. My file is located in /etc/netplan/ The configuration is: network version: 2 renderer:networkd ethernets: ...
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50 views

“No space left on device” but plenty of disk and inodes

I have an 8TB WD red disk, with 273gb available disk space, and plenty of inodes. But I cannot even create a directory. user@server:/media/WD 8TB 2$ mkdir tmp mkdir: cannot create directory ‘tmp’: No ...
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156 views

NetHogs showing suspicious (outgoing) traffic to random ports from root on Ubuntu 16.04

Using NetHogs on an Ubuntu 16.04 (web) server, i.e. on a machine where no consumer applications or web browsers are installed, besides traffic that is to be expected (HTTP and SSH) PID USER ...
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46 views

Proxy settings on Ubuntu Server

I'm looking for the proxy settings on Ubuntu Server 18.04. I found them in regular Ubuntu under /etc/apt/apt.conf/proxy, but the apt.conf folder is missing.
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46 views

How copy ssh key to authorized_keys using php shell_exec?

I am trying to copy/paste an ssh key into authorized_keys file on an Ubuntu ec2 instance from a php script that runs shell_exec command. I get permissions denied error. It's bout www-data user not ...
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48 views

Failure in DNS name resolution

Hello dear ubuntu users, I have a problem, that i can't resolve. At the some time my ubuntu server (18.04.3 LTS) stopped to resolve the domain names. For the main job it is doing - i don't actually ...
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44 views

Ubuntu server hardware RAID 1 extension

i am pretty new to servers configuration and i would like to ask you guys the following questions knowing that i am planning to run ubuntu serer 18.04 on a dell poweredge, 2x1T SAS hdds physical RAID ...
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24 views

site address files in sites-enables and sites avaiable get written over

I am trying to set uo multiple sites on apache2 on UB 18.04 (Zorin15). I add a files for each site to the sites enabled and site available folders however one file is written over so they both end up ...
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31 views

Can't mount CDs / DVDs

So I have this old computer that I use as a server. On it I have installed UBUNTU SERVER. And I have these DVDs I want to mount in the server (it's got a dvd drive) but when I try to mount them I get ...
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36 views

How do I kill a screen session if it has no running processes?

I use screen to run a Minecraft server, and I restart it every day. This is my start code: screen -mdS mcserver screen -S mcserver -p 0 -X stuff "java -Xmx4G -jar server.jar^M" This is my stop code: ...
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42 views

mysql does not start after a reboot

I am using Ubuntu 19.10 and installed mysql-server on it. First it gave me an error error was mysql access denied for user 'root'@'localhost' solved by code below ALTER USER 'root'@'localhost' ...
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29 views

First ethernet port on Ubuntu Server 18.04.3 LTS suddenly refuses to connect to vpn router on startup. Second port connects correctly

I have a Netgear Prosafe FVS336GV2 and a Dell Poweredge R540. The prosafe is obviously ancient, but the Poweredge I set up about a month ago. Until this weekend, it was working fine. I have the ...
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52 views

How can I verify email IDs through terminal commands?

I'm trying to verify email ids through terminal, but it said it can't find the server nxdomain. I used the following commands nslookup -type=mx <mailid> nslookup -q=mx <mailid> But it ...
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23 views

After apt-upgrade Ubuntu Server 18.04 cant boot

My install of Ubuntu Server 18.04 is unable to boot after running apt-get update && apt-get upgrade. My boot drive is mounted on /dev/sda . I noticed some warnings during the upgrade, to set ...
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3answers
136 views

Apache virtual host issue or dns issue?

I posted this question before but I guess it wasn't clear the way I wrote it or something. So I deleted it and here it is again with as much info as I can think of. I created a server using old ...
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11 views

Adding more users to a bought proxy

I have a proxy from a provider but they dont allow subusers. the proxy looks something like this: my.proxy.com:1234:username:password. I need to add more users and track/limit the data usage by each ...
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1answer
34 views

Could not connect when port forwarding?

I have a server that I'd like accessible from outside my home network. On my router, I am forwarding port 8978 from the server, and my server is running a php script and listening to port 8978. ...
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1answer
41 views

how to run and install ubuntu 18.4 on oracle vm

I'm new to Ubuntu and I have this Virtual Machine issue when installing Ubuntu.I have done a huge search to overcome this but I failed.So please help me out. I'm using Oracle VM (Virtual Box) 4.2.14 ...
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25 views

Ubuntu Server + WordPress wrong configuration

I have a new Ubuntu Server. I set everything needed for a web server: Apache2, MySQL, PHP, and more. I want to use WordPress. I installed WordPress and set it. I have a free domain clickcafe.ddns.net. ...
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65 views

How settings in systemd-resolved affect netplan settings?

I wanted to make sure my server used DNSSEC and DNS-over-TLS, so I went to /etc/systemd/resolved.conf and added the following: [Resolve] DNS=9.9.9.9 FallbackDNS=149.112.112.112 DNSSEC=true DNSOverTLS=...
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123 views

Ubuntu 64 bit server not working on Raspberry pi 4 -2GB

Does anyone have a working solution for ubuntu 64 bit for raspberry pi 4 (2gb w 64gb sd card)?. I know it's been an official release of ubuntu and it seems very strait forward according to ...

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