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

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error while using enable-secure-admin

I'm trying to install glassfish on a server (I also installed Java) but I got this error: Remote server does not listen for requests on [localhost:4848]. Is the server up? No such local command: ...
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mail-in-a-box versus sendmail?

What are some of the considerations for selecting between Sendmail and Mail-in-a-Box? Mail-in-a-Box wins on the marketing: What is it? Mail-in-a-Box lets you become your own mail service ...
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Preparing a DevBox with Ubuntu Server to interface with a windows 8 Machine

I am well aware of the fact that this question may have been asked too many times than a few, however, with some of the tutorials I gotten hold of to read through coupled with answers from similar ...
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How can I set a second network interface in ubuntu 16.04?

I'm new into networks administration and I'm having some problems... I'm trying to configure my networks in ubuntu 16.04. The idea is to configure two networks through the same ethernet cable. One of ...
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Cannot restart iptables-persistent

After installing Ubuntu Server 16.04, I can see that there is some significant changes. How should I restart iptables-persistent. I was used to issue: sudo service iptables-persistent restart. But it ...
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Ubuntu and squid first world problems

Due to circumstances I won't get into, I have had to reinstall my squid box. I'm sure I've followed the same Ubuntu guide to set it up again (https://help.ubuntu.com/lts/serverguide/squid.html). ...
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1answer
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How to automatically connect OpenConnect VPN when the connection closes?

I need to use a third party web service which is accessible only through Cisco AnyConnect VPN. I'm using OpenConnect on Ubuntu to connect to this VPN using host, username, and password. However, ...
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1answer
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gcloud usage 101 for ssh

How do I install and use gcloud? In the context of: Connecting to Linux Instances This guide shows you how to connect to Linux instances using common SSH tools on Linux, OSX, and Windows ...
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1answer
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Windows cannot access Samba server

I have an Ubuntu server, wheatley, and I'm trying to set up Samba on it for personal use on my home network. The goal is to have a Windows 8.1 computer, GLaDOS, with a drive mapped to it. I am new to ...
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Ubuntu 14.04 LTS server port forwarding

I have isc-dhcp-server installed on my Ubuntu 14.04 LTS Server. I also have a vonage phone and HP printer. When connected to my server they receive IP addresses but they cannot communicate with their ...
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1answer
14 views

VSFTPD file permission help for a newbie

I'm putting together a VPS to host a game server for me and a few friends that is running Ubuntu 16.04 server edition. Right now I'm trying to configure VSFTPD to allow us to upload any files we need ...
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Is there an easy to use, simple FTP server for Ubuntu server

For the past couple of hours I've been meddling around with vsftpd and pro-ftpd and Apache (for WebDav) and I find that there is not one program which can simply be run from the cmd and automatically ...
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VirtualBox Lab & IPtables rules

I want to create this lab to apply the rules of iptables on the network,how I selected IP addresses for each interface and each sub-networks to create this lab please help me enter image description ...
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Error nbd-server.allow no such file or directory

When I try to login in a client the server logs record this: tail -f /var/log/syslog nbd-server[2263]: Can't open authorization file /etc/ltsp/nbd-server.allow (No such file or directory).
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Ubuntu 16 server edition 32bit: Can't ping internet, but can ping LAN

Ubuntu 16.04.1 LTS 32bit Server Edition Computer: Intel Pentium 4 /2.4Ghz 32bit WirelessNetwork Card: Realtek Chipset/ TPLINK wireless N PCI adapter I'm new to Linux and Ubuntu. I have been ...
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Ubuntu Server Randomly Dropping to BusyBox on Boot

It seems everytime I attempt to update/upgrade packages, the next boot drops to BusyBox. Sometimes it just randomly drops to BusyBox on restart. I can easily get out of BusyBox by running fsck and ...
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1answer
14 views

Redirecting url to custom directory

I have a URL https://facebook.****.in, set up to point at a directory /var/www/html/facebook_app. the virtual hosts file for this is /etc/apache2/sites-available/facebook.****.in.conf. I would like ...
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Auto Shutdown For Media server

First off I'm very new to Linux. I'm using Ubuntu as my base OS for Emby. What I'm trying to do is find a way to auto shutdown the server when not in use. I've been looking around good for the past ...
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Can't Get Ubuntu Desktop Working on Ubuntu Server [Stuck With Guest Account]

I've tried multiple re-installs and I've tried Ubuntu 15.10 64 bit and 14.04 64 bit. I always end up with a login screen with only a guest account. The steps I take: login as root sudo apt-get ...
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1answer
12 views

403 Forbidden on virtual host with mod_rewrite

I managed to install virtual host on LAMP server and created the config file /etc/apache2/sites-available/site.com.conf <Directory /home/ihab/Workspace/Webdev/site.com/public_html> ...
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25 views

Problem with Coovachilli and Routing

I have network like this: My Net Diagram I wanna deploy captive portal on my private VLANs. The local ip address of Ubuntu server is 192.168.100.1 on eth1 and ip address of L3 switch gateway is ...
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Node in MAAS FAILED_COMMISSIONING

I am trying to add a node to the maas cluster. Maas controller is able to wake the node and start commissioning. But it fails at the end and shows the error FAILED_COMMISSIONING. Here is the log from /...
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Ubuntu Server DC with Samba server 4.4.5 forwarder question

So I've decided to set up a DC via Samba 4 @ my 16.04 Ubuntu server . Question is - since my domain name is SAME as a hosted website domain name somwhere in the WWW (let's call it askubuntu.com) and ...
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39 views

Openswan shows no installation candidate after running apt-get update

I have ubuntu server 16.04 installed, with a working internet connection but running apt-get install openswan still fails, giving E: Package 'openswan' has no installation candidate. Does anyone know ...
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Lock file when editing in server

Our network has 1 server and 2 clients. Our web project is stored in the server, and we edit it from both clients. When one user is editing one file, the other user shouldn't be able to edit it at the ...
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1answer
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Creating ISO images from already installed Ubuntu Server on commandline

I am using Ubuntu Server 14.04 LTS. I need to make an .ISO image from it. The trouble is that all tools i have come across use GUI. Ubuntu Server on the other hand does not come with GUI. Are there ...
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76 views

14.04LTS not booting, ..timer error

I recently got given an old server from a friend, and have been attempting to set it up as a plex media server. So I installed Ubuntu Server 14.04LTS (Long story short, 16.04LTS and the server GPU ...
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24 views

Debian Server not receiving IP from DHCP [on hold]

I have configured a DHCP server on Windows Server 2012 which is connecting to my Debian server on virtualbox. They are connected on same line. I changed eth0 to receive IP address from a DHCP server ...
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System performance impact of huge iptables block lists

Due to non-responsiveness to abuse reports by Chinese network operators I decided to block all of their IPs. Several other countries as well. This website's data is incomplete, but gives an example ...
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rsyslogd somehow crashes my server

About 8 hours ago my java web server (on an ubuntu machine) crashed and I'm trying to figure out why so that it doesn't happen again. There is some weird stuff going on in /var/log/syslog around that ...
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Lost Password Ver 14.01 LTS

Tried the suggestions in the thread "How do I reset a lost administrative password?" and when I get to recovery menu and select "root" I do not get a command line that says "Give Root Password for ...
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Install font packages for all the language charsets

On a machine running Ubuntu server there is a script that generates pdf files with the website content. There was a problem that it was not showing the Chinese characters. After installing the ...
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Why ping and ssh resolves different Ip?

Honestly I have no idea what happened but ping not connecting to the right ip address so can't login with ssh. Say my server ip address is 136.17.90.160, but when local when ping... (venv) simon@...
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Cannot open virt-manager from terminal | ubuntu server

I am trying to open virt-manager from the terminal "sudo virt-manager" but I got this error "gdk_mir_display_open Failed to connect to Mir: Failed to connect to server socket: No such file or ...
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IP masquerading to share server connection isn't working

I have 2 Ubuntu servers, one has internet another doesn't I've followed manual here - https://help.ubuntu.com/community/Internet/ConnectionSharing Done setup accordingly to Ubuntu Internet Gateway ...
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Restrict output of Xorg on Ubuntu server

I have Ubuntu server 16.04 installed with Xorg , xinit , xauth , openbox - when I logout from UI Xorg prints a lot of data to screen. This data shouldn't be seen by my users - how can I stop Xorg from ...
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Hide an interface from wireshark

I have been looking at the possibility to hide a network interface from wiresharks dumpcap, the reason is that I want to hide the servers management port so that users can't listen on that traffic ...
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2answers
26 views

What are the actual risks of giving www-data sudo nopasswd access?

I have a server that I just installed apache on. I have a php script on the server that I would like to run a sudo command from. I've been scouring the web on why giving www-data sudo nopasswd access ...
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How to provision Using t2 micro vm @ AWS using Juju [duplicate]

Currently I provision vms at AWS using Juju deploy mysql and setup environment are medium size vms. How can I setup/run using t2 micro vms at AWS? What are commands? Here are what I used currently.. ...
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Do I need to install drivers for headless server?

I'm creating a file server with Ubuntu Server 16.04 LTS. The motherboard doesn't have a on-board graphics card so I'm using a Nvidia graphics card for the install. I've tested that I can install with ...
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54 views

INFO: rcu_sched detected stalls on CPUs/tasks

I have a AMD FX 8320 8 Core CPU that I have turned into my main file server. I installed Ubuntu Server 16.04 on it with no problems. I also installed KVM/Quem and tested installing a VM from another ...
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Juju provision at AWS [duplicate]

I am using Juju charms to provision & deployment at AWS account. My AWS account is free tier. My situation is whenever I used juju deploy mysql or haproxy its provision as medium size vm at AWS ...
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Ubuntu PXE install, server 16.04 from ISO, cd rom couldn't be mounted

I'm trying to install ubuntu 16.04 server from a PXE server (running freenas). After the install starts i'm getting an error message for cd rom couldn't be mounted. I've tried every thing i can think ...
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2answers
30 views

Disable remote logon but still allow su to same user

My company is looking to secure our a Ubuntu 14.04 LTS servers and we wanted to disallow specific users the ability to logon remotely, but still allow people to change over to that user account using ...
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1answer
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How to check SSD/HDD model used on a VPS?

Is there anyway we can check what is the model of storage device used on VPS without having access to the hypervisor. I`ve tried to check it on DigitalOcean droplet using several command but I didnt ...
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Error running $ juju quickstart

Error running $ juju quickstart. I doubt there is some problem with maas installation but can't find any. juju quickstart v2.2.4 ssh-agent has been started. To interact with Juju or ...
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1answer
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Comment, Uncomment, change setting based on string, add line from terminal

I have to edit some files to uncomment a line, change a value on that line or uncomment a line. I am trying to do this through a bash script. I am trying to edit /etc/ssh/sshd_config and change ...
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2answers
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Where is system Disk info stored

I have written a C program to display basic system info. It does this by parsing /etc/network/interfaces and /proc/meminfo with fgets and associated logic. These give me the network info and memory/...
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Ubuntu Server - After reboot key always refused, until login

I installed Ubuntu Server and also configured the ssh server. I tried the "key system", so I have a public key in ~/.ssh/authorized_keys, and also configured this file in /etc/ssh/sshd_config. When I ...
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Run Executable After login [duplicate]

So I have an executable (output of gcc compiling a C program), that I would like to run after login so it is the first thing a user sees upon login. It is a graphical menu that displays system ...