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

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Set up of 'sendmail' headers for cron jobs (crontab-user@mydomain.xyz)

I use Ubuntu 14 on AWS EC2. I have a non-root user crontab. Upon cron job completion, an email is to MAILTO address, as set in crontab. The email sender looks like this: root@ip-111-11-0-11.us-east-...
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1answer
47 views

TP-Link Archer T9E in Ubuntu Server 14.04

I have my NAS running Ubuntu Server 14.04, now I need to add a PCIe AC wireless card and I want to use this one, Archer T9E: http://www.tp-link.com/en/products/details/cat-11_Archer-T9E.html but in ...
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Should Cifs be disrupting my network access on 16.04 Server?

I just installed a fresh copy of Ubuntu 16.04 server. Configured the network interface, updated, upgraded, and dist-upgraded. I can ping local area computers, Gateway, DH www.google.com It seemed to ...
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1answer
49 views

When I create VirtualHost in .conf file and /etc/init.d/apache2 reload error [duplicate]

My Task : The domain www.mynewsite.lk is configured and hosted in a hosting server with the IP address 192.168.1.100. Another domain called www.mysite.lk should also be configured with the same ...
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13 views

cisco managed switch vlans in ubuntu

i have a cisco switch (cisco small business 300 series) and an ubuntu server 16 that has only one ethernet card. I would like to add the switch to the ubuntu so when i do ifconfig can see all the ...
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19 views

pxe booted node dose not shutdown automatically!

I setup maas 1.8 on Ubuntu 14.04 and configured pretty everything from internet facing network interface (eth0) to private network interface (eth1) to generating ssh key and putting it in maas GUI. I ...
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51 views

Resolution became smaller after installing ubuntu server 16.04

I installed native ubuntu server 16.04 on a computer with intel graphic embedded. During installation, the screen is showing perfect full screen. After installation, it is still showing full screen ...
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35 views

Shutting down causes SSH keys to not work

Information When I shutdown or reboot my Ubuntu Server(16.04), logging in via ssh returns: Permission denied (publickey). So far, the only way to fix this has been to reset the permissions of ssh ...
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1answer
26 views

No-Ip updates the IP address but doesn't point to the host

I'm trying to set up a little server at my home and I need a static hostname in order to make it reachable. To do that, I'm using No-Ip. I've created an account, selected a hostname, and installed and ...
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CUPS print jobs on Ubuntu Server 16.04 received and “successful”, but no actual printing

I'm working on setting up a local server, part of which is going to be a CUPS print server using a HP LaserJet 1018. I was able to get CUPS set up and running, and I'm able to install the printer ...
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1answer
32 views

Invalid or corrupt jar file on Ubuntu Server

I just got an Ubuntu VPS from ovh.ca the other day for hosting Java programs/web services on. I use Putty to interact with the VPS. I used PSCP via Windows Command Prompt to transfer my jar file onto ...
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84 views

Network disabled in Ubuntu 16.04 server

When I ran lshw -c network, it said that the network was disabled. ifconfig output: lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host ...
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1answer
40 views

Geonode installation issue [duplicate]

I use Ubuntu Server 16.04 on VirtualBox. I was installing Geonode according to its documentation: sudo add-apt-repository ppa:geonode/stable sudo apt-get update but I have this error: E: some ...
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20 views

Ubuntu Server 16:04 shows EADDRNOTAVAIL error when attempting to serve content

I just loaded up a fresh VMWare VM with Ubuntu Server 16:04 and am having a problem getting it to serve content. I'm using a Koa/Node server with the following code: const koa = require('koa'), ...
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1answer
41 views

What port should external users use to access my FTP server? Am I doing this right, even? Reality check..etc

I am very new to Linux and computer science in general - please be patient with me. I am attempting to create a read-only FTP server such that I can share some files in a manner as easy as possible ...
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15 views

HowTo : Set up PhPVirtualBox to manage remote VirtualBox instance

I am struggling to get PhPVirtualBox to manage a remote VirtualBox instance. This is all in a testing environment security is minimal and likely not the problem. IE: my username/password for vbox are ...
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40 views

How to enable “sleep after x minutes of inactivity” on Ubuntu Server 16.04 without third party software?

So how do I know it's not working? Well on my MacPro, I set it to go to sleep after 15 minutes of inactivity. The monitor turns off and then the fans and all lights turns off. This doesn't happen on ...
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New to Ubuntuserver, need help with server ip (nginx)

I am completely new to nginx. I started with it to use my livestream on my gaming pc going through the nginx-server and push it to twitch. After many hours of trying to setting everything up, I think ...
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10 views

HP DL380 G7 Ubuntu 14.04 setup for File server / Cloud server / Web server

First off, i am a newbie. I do know my way around somewhat but am lacking the required skill to get this up and running. i have about 10 hours research into getting Ubuntu up and running with ...
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0answers
74 views

Freezing issues every time I run Xorg/startx (fglrx: No matching Device/Segmentation fault)

I've just spent the last 3 days straight with no sleep attempting to get my first mining rig up and running, and I've well and truly hit a brick wall. I'm using Ubuntu Server 14.04. This is basically ...
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18 views

Connecting openssh

Is it possible to determine who can connect to your server based on its mac address? I would like to make my server safe as possible and determine that it can be connected only via my Android phone ...
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1answer
21 views

mysql-server installation gives this error: useradd: existing lock file /etc/passwd.lock without a PID

After 3 to 4 hours of hard struggle I resolved this issue, but I am still curious about this /etc/passwd.lock What is /etc/password.lock? What /etc/passwd.lock does? And what I understood ...
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28 views

Mail is not received

I have a configured a mail server in my system, After configuring I am facing a problem that I can send a mail but I can't view the mail sent from external or local. Test case : Sending mail to ...
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2answers
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Unknown Xeon processor model

Any help would be appreciated. I'm trying to get the model number of a IBM server I found. I'm trying to see what model Xeons it has. The conventional methods aren't working for me. Here's what if ...
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23 views

VLAN trunk to LXD containers

I'm playing around w/ LXD containers on Xenial. What I'd like to do is to have an 802.1q trunk coming into my physical host, and have the tagged traffic reach the containers, where I can choose which ...
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1answer
28 views

Can't send ongoing messages in any e-mail client on Ubuntu 16.04

I'm new in Ubuntu. Recently I've started to have the problem with sending messages from all my e-mail clients (Evolution, Thunderbird). I'm still able to receive them, but when trying to send any ...
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1answer
16 views

Add specific printer output tray as new printer

I need to add printer output tray which has virtual name how can I add that tray as printer in Ubuntu. I need to add that printer with shell command not in GUI.
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Ubuntu Server 16.04 - installed ubuntu-desktop but getting no screens error (ee)

As per the title, I've installed Ubuntu Server 16.04 and installed ubuntu-desktop, but when I try to startx in to the server I get the following error (==) Using system config directory "/usr/share/...
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1answer
34 views

Apache is not working

I have Ubuntu Server 14.04.4 LTS. I have a virtual hosts on my server. My .conf file :- <VirtualHost *:80> # The ServerName directive sets the request scheme, hostname and port that # ...
1
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1answer
41 views

Unable to login with an SSH key

I am trying to login with an SSH key on Ubuntu but the problem is that, at login time, I am asked to enter the password instead of a passphrase key. I setup permission, generated a key multiple times, ...
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44 views

Ubuntu Server 16.04 - Emergency Mode (Urgent)

I have a Intel Nuc with Ubuntu Server installed on it. Yesterday I rebooted it because there were some connection problems for the web-server (or at least that's what I thought). After that the system ...
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29 views

DHCP server setup and controlling a DHCP client in the form of a laser scanner

I have set up a DHCP server on my computer(Ubuntu 14.04) .I have viewed my 'connection information' and gave the following parameter values in my /etc/dhcp/dhcpd.conf file subnet 192.168.3.0 ...
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31 views

How to install openssh-server on BQ Aquaris M10 Ubuntu tablet? [duplicate]

I want to connect via SSH to my M10 Ubuntu tablet. Thus, I tried to install OpenSSH server on the tablet as explained here. However, that's what the tablet says: sudo apt install openssh-server W: ...
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15 views

USB Keytoken, Network Drives, and Encryption

(Note to site owners: What is your policy on cross-posting from another forum such as ubuntuforum. The following has already been posted there but without a satisfactory answer in over three weeks.) ...
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0answers
27 views

X over SSH error

So I have a simple question. I am trying to run programs that use graphics rendering using X11 forwarding. Currently I have two computers both running XUbuntu 16.04 LTS, a desktop and a laptop. I am ...
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15 views

postfix problem with 'from' header

I finally managed to setup postfix as a relay to my gmail account. The problem is in FROM section of incoming mail on gmail web panel I have name of someones account and Which makes impossible to ...
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1answer
34 views

How do I use Ubuntu Server and OpenStack to create my own private cloud, which can host a website and store data on it?

I want to use Ubuntu OpenStack to create my own server from scratch which will help me deploy my own cloud application. How do I go about doing it?
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17 views

SSSD Samba, can't get it working

I'm trying to get samba working with SSSD but I just cant figure out what is wrong samba config /etc/samba/smb.conf (I added guest just for testing) [global] security = ads realm = domain.EU ...
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23 views

How do I open ports for Asterisk and SIP?

How do I know whether port 5060, for SIP, is open on localhost? thufir@mordor:~$ thufir@mordor:~$ nmap localhost Starting Nmap 6.47 ( http://nmap.org ) at 2016-06-29 23:09 PDT Nmap scan report for ...
1
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1answer
43 views

Running Scripts at Startup

I'm trying to run a few scripts (MongoDB and Leanote) at startup but am running into a bit of difficulty. I have a file named leanote in: /etc/init.d/leanote.sh I also ran: update-rc.d leanote.sh ...
1
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1answer
18 views

Need starting point to create a server in Ubuntu (ver 14) and writing apps (preferably in C) [closed]

I would like have an Ubuntu server where I could write an application, preferably in C, that would accept files from another computer. This would be over the Internet, not a LAN or the likes. There ...
1
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1answer
49 views

Vhosts not working on Linux Server

A few weeks ago I installed LAMP on Linux Server(Version 4.4.0-24). Apache(Version 2.4.20) works fine and I can access my Apache2 Debian Default Page on 192.168.10.129. Now I want to create virtual ...
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cmake compiling fails on Ubuntu 14.04

I tried to follow this guide on how to Install a WoW Vanilla Private Server on my Ubuntu 14.04 VPS (Installation Guides -> Linux -> Debianinstall https://www.getmangos.eu/wiki.php) but sadly I get ...
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Reinstalling Ubuntu via SSH, keeping home folder/partition

I have a dedicated server that I cannot access anymore, for some reason, after a reboot. It refuses SSH connections. The machine had otherwise been running for a month without issues, and multiple ...
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23 views

OpenVPN and redirect a host to real IP Server

I have my Ubuntu Server, over a VPS, connected to a VPN, but I want that a specific host/ip (www.google.com for example) connect to internet through real IP of server. I have tried with some ...
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connect from ubuntu server to pgsql in windows [closed]

I have a website that is on Ubuntu server but my database is in windows and i have config file too. how can I connect these one together? this my config file : * PostgreSQl : pgsql * MySQL : ...
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19 views

Send a SIP Invite to lrnlookup.telnyx.com with sipsak?

How can I use sipsak to send a SIP Invite to lrnlookup.telnyx.com? The telnyx Data API tab describes a SIP request: Requires IP Authentication to be setup through the portal and associated with ...
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24 views

How to redirect ssh logins to server's Docker containers

I'm planning a server for the students studying Linux and have some rules for this. All students will get the same server domain/port for SSH, and each own username/password(normal privilege). 4 ...
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1answer
18 views

is it possible to proxy secure applications?

Internet ---------- Proxy Server (network Edge) | | | | | | GitLab App 2 App3 So I have gitlab installed on a ...
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19 views

Ubuntu 14 cannot connect eth0

I just reinstalled Ubuntu 14. I can't seem to get it to connect to my router... When it powers on, I see it saying in blue letters "waiting for network configuration" or something. When it eventually ...