Questions tagged [server]

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

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Ubuntu 18.04.2 cannot log in local or SSH after power failure

I cannot remote into local with root, SSH is set for AD Authentication and it will not let me log in either. Ubuntu runs in ESXi 6.5 and had a Dell Technician unplug storage array! Anyway I tried ...
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15 views

Ubuntu server fingerprint changed and now I can't login to any account via ssh

Kind of new to this whole Ubuntu Server thing. My server got unplugged at some point. Upon bringing it back online, when I tried to login with my account on my laptop, it said the fingerprint changed....
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27 views

/usr/sbin/and using up the entire CPU coure

I am running Ubuntu Server 18.04 LTS Kernel 5.5.2-050502-generic and since a while now I've seen this /usr/sbin/and popping up in htop, always using entire full core of the server, not really sure ...
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20 views

Start hadoop deamons via php [closed]

i have a Hadoop cluster and i want to start the cluster via PHP. when i run "start-dfs.sh" via terminal, it works fine. how to resolve this? i have tried this: ".$output."" ; ?>
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1answer
30 views

Unable to authenticate to SAMBA printer

I am on Ubuntu 19.10 (but, the same problem also on Pop! OS 19.10 and Ubuntu 18.04). I am trying to add a SAMBA printer that exists somewhere on the organisations' network. The printer itself is ...
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28 views

Malware lab without virtual machines (Lubuntu as server/gateway)

I would like to set up a malware lab without virtual machines. On one laptop I have Windows 10, on the other Lubuntu, which will be used as a gateway/server. On the latter, I want an ethernet ...
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11 views

MaaS web UI wasn't available on Ubuntu Server 18.04

I tried installing MaaS with apt install maas on Ubuntu Server 18.04, but the Web UI could not be accessed, and there was no process listening on port 5240. However if I install it on Ubuntu 18.04 (...
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34 views

Remove certificate from Ubuntu

I have followed below steps to install a trusted authority certificate: sudo cp mycert.cer /usr/share/ca-certificates/mycert.pem sudo dpkg-reconfigure ca-certificates sudo update-ca-certificates Now,...
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24 views

Apache2 Not Working And My browser php code

When I restart apache server this message appears: Job for apache2.service failed because the control process exited with error code. See "systemctl status apache2.service" and "journalctl -xe" for ...
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25 views

Any IPv6 SLAAC server software for Debian Stretch / Buster? [closed]

I'm configuring a private network where I run a small Debian VM as the gateway for the network. Hosts in the network are provisioned by automated programs so IPv4 static IP is easy to assign, but I ...
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1answer
19 views

Nginx doesn't serve CSS

this is my current Nginx config and my problem is the 404 page doesn't serve the CSS, it serves the CSS if i put the CSS files into /var/www/testdoamincom, but it doesn't server in any other case, is ...
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51 views

Apache slows down and suspicious entries in error.log

I run Apache2 on headless Ubuntu 18.04 server, an Intel based Chinese Beelink NUC clone type of device. I run a few web apps such as Emby, PiHole, Medusa and Syncthing and two Wordpress sites, very ...
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25 views

School Ubuntu Server: pfsense or iptablet? Fileserver?

I'm a teacher on a Secondary School from Argentina. We have an old PC (Pentium Dual Core, 2 GB DDR2, 1 TB HDD) with Ubuntu Server 18.04 running with Samba Server, since all the computers in the ...
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23 views

The command could not be located because '/bin:/usr/bin' is not included in the PATH environment variable [closed]

I got this error message when running my Ubuntu Server. * Documentation: https://help.ubuntu.com/ New release '16.04.6 LTS' available. Run 'do-release-upgrade' to upgrade to it. *** System ...
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30 views

System policy prevents changes, contact system administrator- Ubuntu 19.10 .?

Recently we have implemented ubuntu 19.10. after putting it live when I tried to change the System setting to enable Automatic Time and Date to enable. Its showing a unlock button above and gives a ...
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29 views

issue curl command from remote WAN

The goal is to send commands to a thermostat from a WAN offsite network. A thermostat sits behind a firewall at 192.168.1.5. Because it was designed to blindly accept commands: I am reluctant to ...
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40 views

Crontab doesn't seem to work

I run my minecraft server in a screen and I have a script set up to restart the server via crontab every night at 3 am. restart.sh: #!/bin/sh echo "Letting people know that the server is going to ...
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0answers
39 views

Connecting to a VPN on a remote linux server (VPS) fails

I've been trying to connect to a VPN through my Ubuntu VPS, but every time I try, the server shuts down. Perhaps the connection blocks the ssh, and all the traffic when I try to connect? I tried ...
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23 views

Installed ubuntu server, then attempted Ubuntu LTS but its failed and now stuck on HP boot menu

So I had an old PC with Windows 10 on it. I decided I wanted to install Linux on it, as I had a few weeks ago with an old laptop which runs fine. I installed Ubuntu Server fine but then decided I ...
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26 views

Ubuntu server 18.04: clamAV does not work due to missing /var/run/clamav/clamd.ctl

I have a problem with ubuntu server 18.04. I have clamAV installed that connects via unix socket domain /var/run/clamav/clamd.ctl. ClamAV works well for a while, then the file clamd.ctl disappears ...
0
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1answer
37 views

can't log in with my password during ssh connection

my /etc/ssh/ssh_config is as follows # This is the ssh client system-wide configuration file. See # ssh_config(5) for more information. This file provides defaults for # users, and the values can ...
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56 views

raid 5 to raid 0

So I have no clue about linux. I bought a server with 2x250gb SSD and 1x 2Tb HDD. Are all my disk in a raid 5? does this even make sense to raid 5 two ssd and a hdd? is it possible to raid 0 both ...
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18 views

ZFS on iSCSI target

I have a linux installation with just one disk for the OS and all other storage from my NAS exposed as iSCSI target. This works very well but I would like to use a filesystem that supports snapshots, ...
1
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1answer
29 views

How can I remove an iptables rule?

I would like to temporarily add the following iptables rule to see if allowing inbound traffic on port 5000 I will be able to connect to my docker container and the web server running within it: $ ...
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24 views

I want to make preseeded image on windows

first, I have a pc with windows 10. second, I have no hdd space for virtual (only near 1gb) on windows pc. third, I have a empty machine that has no keyboard, no monitor. forth, I want to install ...
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0answers
39 views

How to find out what's executing apt.systemd.daily?

In Ubuntu cloud server images, apt update/upgrade is performed very aggressively, from different services, which causes the typical locking issue. How do I find out what is exactly invoking apt-daily?...
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23 views

After Apache Re-installation, Browsers Giving ?reload in URL

Ever since I reinstalled Apache recently, my browsers (both Firefox and Opera) show ?reload after the URL in any of my local development sites when the page has been reloaded, as I must do when ...
2
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1answer
64 views

Puppeteer on Ubuntu 16.04 doesn't work

Is it possible to run Puppeteer on Ubuntu Server 16.04? I get this error. (node:23213) UnhandledPromiseRejectionWarning: Error: Failed to launch the browser process! /root/bin/node_modules/puppeteer/...
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2answers
30 views

Where is mysql's configuration file in ubuntu server 18.04

I recently installed MySql Server 8.0.19 on and EC2 (t2.micro) instance running Ubuntu 18.04. I'm trying to find the MySql configuration file that's like the my.ini on Windows. I've looked through ...
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2answers
26 views

DynDns is not reachable from own network, but works with proxy

I have setup an ubuntu server with a web server i want to port-forward. I tried accessing the IP over proxy and it worked. I have set a dyndns and over a web proxy this worked too. But when i type it ...
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3answers
4k views

Why I get “tar: Cowardly refusing to create an empty archive”? when trying to backup the whole server

I am new at ubuntu and dealing with servers. I use Ubuntu 16.04 x64. I want to have a backup for my entire system, So I followed this video https://www.youtube.com/watch?v=KTayZIou-1M I type this ...
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1answer
28 views

Need Help on Ubuntu Server 18.04.1 Static Routing

I'm a newbie when it comes to Ubuntu Server. And I am currently having a difficult time configuring a Static Route. I have an Asterisk Server Hosted on my Ubuntu Server Machine, It has 2 NICs enter ...
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26 views

RAID 1 - mdadm or btrfs?

I want to create a RAID 1 array of two (inexpensive) HDDs, in order to keep some rarely accessed data. I have thought about two main ways to create it: using mdadm using btrfs I've read about ...
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16 views

How to forward all local SMTP requests on port 25 to a remote SMTP server on port 587

I'm trying to solve a problem with a bulky program that is, for some reason, only sending email over port 25, even when port 587 is specified. In this answer, someone suggests using the windows ...
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16 views

PM: hibernation entry

I have a small domestic server (with Ubuntu 18.04.4 LTS), it works well but once a month more or less, it goes off, it's not serious but I wanted to try to understand what the cause was. I have opened ...
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0answers
28 views

Why is port 22 showing connection refused when logging in using Ethernet?

I have been facing a problem login into our server every time I switch from Wi-Fi connection to an Ethernet connection on my laptop. Using my laptop, I can easily connect via Wi-Fi but the problem ...
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0answers
31 views

Where can packages such as the CVE'd apache2-bin=2.4.18-2ubuntu3.10 for Ubuntu 16.04 be installed from

I'm writing a script which uses the output of apt list --installed to install the same package version on a fresh VM install of (un-upgraded) 16.04. The purpose is to test upgrade procedures, by ...
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28 views

How to Host ASP.NET Core on Linux with Nginx?

I want to host my ASP.NET Core app on my Linux Machine so that others IPs from my land can access my websites using Nginx.
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27 views

Tomcat 6 on Ubuntu 18.04

I upgraded Ubuntu Server 16.04 LTS to Ubuntu Server 18.04 LTS. However, Tomcat 6 isn't working. There are specific things that I have to implement using Tomcat 6. Are there workarounds to get Tomcat 6 ...
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0answers
16 views

SSH script to make a file in a folder inaccessible if it is opened previously and make it readable when closed

I have files in a folder and I am accessing those files via sshfs through remote locations. I just want to know if there is a way to make the files accessible by only a single user i.e if some one ...
0
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1answer
24 views

How to scroll in Ubuntu Server 18.04.3?

I have recently installed 6 Ubuntu Server 18.04.3 VMs to test a private blockchain network. I use Hyperledger Besu as my ethereum client to do the same. However, there have been some issues lately ...
3
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1answer
126 views
+50

Ubuntu 18.04 DNS resolution fails after a while

When I ping google.com on my Ubuntu 18.04, it gives me ping: google.com: Temporary failure in name resolution I would then proceed to run sudo service systemd-resolved start My /etc/resolv.conf ...
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17 views

Ubuntu 16.04 Server causes entire LAN to flap intermittently when connected

Machine: Dell Precision T5600 Server OS: Ubuntu 16.04 Server Programs running: Eve-ng, Apache web server on port 591 instead of 80 I've ruled out the following: -- No conflicting IP's on the (3 ...
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0answers
29 views

Ubuntu S-nail with Gmail- SMTP Unathorized SignIn

I am trying to use s-nail with gmail smtp server to send mail from my aws vps. With outgoing firewall being opened to 587, I believe the error I am getting is due to my gmail account not recognizing ...
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0answers
15 views

Error while connecting through IP Address and apache server port from an application on mobile [closed]

Installed XAMPP ,put application files into it.This application fetches details from database(using postgresql database) and displaying successfully through browser(with both static ip and localhost),...
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0answers
33 views

Ubuntu 18.04 DESKTOP Unattended PXE installation, is it possible?

I've been doing PXE boot installations for years on most Linux flavors, Mostly server versions. But I can't seems to be able to PXE boot with fully unattended installation of Ubuntu 18.04 Desktop ...
0
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1answer
56 views

apache2 not starting in ubuntu

I tried to do systemctl start apache2, then it shows no error. But when I check its status, it’s still inactive. How to resolve this? The output of the status follows: apache2.service - LSB: ...
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0answers
17 views

E: The package system needs to be reinstalled, but I can't find an archive for it [closed]

i am getting error while install some python module. using ubuntu 18.04. any help, would be much appreciated. E: The package system needs to be reinstalled, but I can't find an archive for it.
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0answers
31 views

Samba issues - seems to be working, nothing can connect

Ubuntu 18.04LTS Samba version 4.7.6-ubuntu Issue: Win 10 and Android devices can see the share, but when I connect I get an error, the most helpful of which is that in ESFile explorer on Android: ...
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2answers
26 views

How to use Ubuntu 19.10's integrated DLNA server without GUI?

I have a NAS running Ubuntu Server 18.04 with minidlna. Minidlna has been unmaintained for a long time and now it kind of sucks. I read that 19.10 has an integrated dlna server, but I couldn't find ...

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