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

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Do I need NetworkManager on Ubuntu Server?

I've seen several posts suggesting using nmcli, nm-tool and similarly named utilities for network related tasks. In my case, I was trying to see what DNS my Ubuntu server installation is trying to ...
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702 views

Another LXC Puzzle

So my server is running... Distributor ID: Ubuntu Description: Ubuntu 13.04 Release: 13.04 Codename: raring I stumbled onto lxc when I trying to find something to replace vmware on a small ...
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449 views

Ubuntu Server changing Monitor from DVI to VGA

i have a little problem with my Ubuntu Server 12.04. I installed it yesterday with a DVI monitor connected. With the DVI Monitor, everything works fine. But when I try to connect it with an other ...
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2k views

Is there a default limit to the amount of memory a process may use?

Running 64-bit Matlab 7.12 on a 64-bit 10.04 Ubuntu Server. When I try run a big problem that should need 46GB of memory (the server has 72GB of Memory and plenty of swap space), the experimental ...
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118 views

Ubuntu server boots, then shows blinking cursor

My Ubuntu server boots but then shows a blinking cursor. It passes GRUB and I get the boot log output and all seems fine, however I get no shell after booting. I can boot into recovery just fine ...
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How do I setup a fine grained preseed with tasksel set to manual?

I am trying to preseed a netboot install of Ubuntu 13.04 (Raring Ringtail) x64. Work Setup My preseed configuration works fine as long as tasksel is not set to manual. For example: [...] d-i ...
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382 views

Trouble with local server, URL not found errors with some, but not all local sites

I am setting up my Ubuntu laptop for my new job and I am having a strange issue. They have a crazy environment setup that I got working on my local Ubuntu 12.10 machine with Apache and PHP 5.3 (had to ...
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155 views

Timestamp appears to be wrong on some log files

When I use scp to remotely check my server logs, the "last changed" timestamp on some files appears to be set in the future. I've double checked the local time and timezone settings on both my server ...
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362 views

How to get HAVP(HTTP Anti Virus Proxy) working?

I have a Ubuntu 12.04 server with HAVP(HTTP Anti Virus Proxy) with ClamAV and AVG. My dhcp server is a OpenBSD 5.2 router. If I connect manually to my Ubuntu server its works great, but when I'm ...
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1k views

Installing 12.04LTS Server on a Fake RAID10

Scenario Install Ubuntu 12.04LTS Server on a RAID10 with boot on a RAID1. 4 - 2Tb SATA Hard Drives 3 Partitions (/boot, /, and swap) boot (256Mb from each disk) setup in RAID1 /dev/md0 partition ...
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MGA G200e on Ubuntu Server 12.10

I'm trying to set up correct display resolution but the driver doesn't seem to work. r00ster@nix:~$ sudo lshw -C display [sudo] password for r00ster: *-display UNCLAIMED description: VGA ...
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131 views

Server setup for multi-site development web server with multiple contractors logging in?

While I've been using Linux for many years as a desktop OS I'm still a novice at the more serious server admin stuff. Basically I'm looking for a best practices that covers: Hosting many domains (I'm ...
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2k views

Server 12.04 machine does not respond to arp broadcasts

I just ssh'd into my old netbook (running as a CUPS server) running ubuntu server 12.04 and did a dist-upgrade (haven't done one in a while). Upon rebooting the machine, I can now no longer access it ...
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222 views

How to choose LVM mapping mode when installing Ubuntu server 12.04?

I would like to create a volume group with striped mode on top of 2 RAID-1 devices. The issue here is I cannot choose striped when configuring LVM at installation stage. It's always be linear.
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325 views

when installing /boot inside a lvm group, where do I install the boot loader?

I am setting a personal file/cloud server based on ubuntu server 12.04 and owncloud but there are certain things about the partitioning that I can't get my head around... Let's say for example I want ...
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527 views

Squid or DansGuardian: Which should pass content to an antivirus product for scanning?

I have an Ubuntu Server12.04 installation acting as a proxy server using Squid 3.1.19. Squid has been configured to pass content to SquidClamAV 6.10 to check for viruses (using icap): icap_service ...
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183 views

VLC 2.0.3.. can't enable http interface

I'm new to linux world, and happy with my ubuntu 12.04 64-bit server. I am working in a re-streaming project and got stuck around access the stream in the server. Already fixed quite issues, except ...
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236 views

What is an appropriate way to install Lustre on a ubuntu 12.10 cluster

I have a 24-nodes cluster installed with Ubuntu 12.10. What is the suggested way to install a relatively new Lustre version on such a cluster?
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398 views

dhcp server configured in ubuntu on vmware

How can I test a dhcp server running on Ubuntu in vmware? My dhcp configuration is: ddns: update-style none; default-lease-time 600; max-lease-time 7200; subnet 192.168.56.0 netmask 255.255.255.0 { ...
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480 views

ubuntu server 12.10 get input signal out of range on HP DL380 G4

After installed ubuntu 12.10 server on HP DL380 G4, I can't boot into it. And the LCD got message "Input signal out of range, recommened settings is 1280x1024". I can't see the terminal and tried ...
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199 views

unable to install Ubuntu Cloud setup on VMWare

I guess this is trivial and most commonly asked question, but I'd reiterate it again here as I'm not able to find a correct solution. I'm trying to install Ubuntu Cloud setup on VMWare using the ...
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2k views

Can't capture video from usb-webcam with ffmpeg

i have a hama usb webcam which works fine with the fswebcam command to capture single frames but when i try to capture a video with ffmpeg i get an error: sudo ffmpeg -f video4linux2 -i /dev/video0 ...
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314 views

command line mount helper for Ubuntu server?

Under Ubuntu there are several mount helpers to support easy mounting of encrypted (cryptsetup/luks) removable media such as USB drives. Under Gnome/Unity/XFCE a requester is opened, just enter the ...
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539 views

Create a HotSpot which requires a username and password

I wish to set up a wireless access point which requires a username and password in order for clients to use the internet. The network setup will be internet modem connected to an Ubuntu Server (2 ...
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416 views

Ubuntu Server Edition won't boot with second hard drive plugged in

I have a fresh install of Ubuntu server edition running on my home server. I cannot (for the life of me) get it to boot with a second hard drive plugged in. I have checked boot priority and made sure ...
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474 views

is there a unified management console for Ubuntu 12?

is there something similar to the management console in Windows for example GUI based Device Manager In windows server there is a server management console through which we can manage all system ...
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752 views

OpenVPN not listening on port

I just set up an OpenVPN server on a VPS but sadly I can't connect to it. When I made a portscan I found that my custom 11940 port where openvpn should listen is closed. The default 1194 port is also ...
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224 views

Is it good practice to backport source packages from newer Ubuntu releases?

My plan is like this: Say I'm running 12.04 LTS, life is good, but its packages guadually become old. Then 12.10 is out, I add a deb-src line in my sources.list, and backport (download source, build, ...
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12 views

Installing Ubuntu Server 14.04.2 in a VMware

Hi everyone I'm trying to install Ubuntu Server 14.04.2 in a VMware station on my iMAC which is running on an intel core i5. My question is which kernel should I install? The options are: ...
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10 views

Can't change default port of a service (apache2 & postfix)

When trying to set up a server I stumbled upon a terrible problem: I can't seem to change a service's default port. I have tried to change Apache2's & postfix's default port and all I get (with ...
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25 views

Ubuntu Server 14.04 TLS plus Hardware RAID

I have just completed hadrware installation of my new RAID server which will run with Ubuntu Server OS. I have installed Ubuntu Server OS and everything run seemingly without problems. However, I ...
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19 views

IPv6 as public IP

I added a static IPv6 public IP address to my Ubuntu Virtual Machine. And routed it in my server, but can't get it to work. When I'm on the server, and go to the local IPv4 or IPv6 address, I get the ...
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25 views

PHP version update gone wrong

I've followed instructions on updating the PHP version on my server from 5.3 to 5.5 During the installation it threw php5-common dependency errors. I've managed to fix the dependency errors by ...
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12 views

Master Account to Upload Files to sftp Server

All, I'm building an sftp server that will be used for clients to download sensitive information. Our Medical Records team needs a way to upload the files to the clients home directory. I'm ...
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24 views

How do I get postfix and dovecot to connect to outside domains?

I have been trying, for the last few hours now, to get dovecot and postfix to send emails to services like GMail and a web hosting email. I know (and hope) that they are not blocking my server. Its a ...
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28 views

Sudo is not owned by root on a fresh install of 14.04 on a VPS. Huh?

Sudo is not owned by root on a fresh install of 14.04 on a VPS. Not familiar with this stuff. So why, what does it all mean and what can I do about it? Steps are: From the VPS management web pages ...
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50 views

Apache won't start - PHP issues?

I'm somewhat of a Ubuntu newb and have recently set-up a ubuntu VPS (on the azure network). I am using webmin / virtualmin as a means to administer the server and quickly * easily create and ...
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23 views

Ubuntu server moved all of my files to .trash-1000

I'm running Ubuntu Server 14.02 LTS. I've got 4 hard drives, one with the OS and 3 2TB drives for mostly media files. I'm using SnapRaid to pool the 3 drives with a mount point called 'mnt/virtual'. ...
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33 views

Running etherpad as a service on raspberry pi [Fail]

I am setting up etherpad-lite on my raspberry pi ubuntu 14.04 server. I got stuck trying to make etherpad-lite run as a service, following these instructions (I've also checked several others but that ...
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12 views

rack server won't start

I am a beginner to ruby and rack ; trying to start a rack server and the rackup config.ru command does nothing. right now my rackup file is #!/usr/bin/env ruby require "rack" Rack::Server.start ...
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Installing Ubuntu server 12.04 - usb is set as primary device

I'm trying to install ubuntu server 12.04 from usb. In bios, I'm setting usb as first to boot and then follow steps from How do I install Ubuntu Server (step-by-step). But when it comes to installing ...
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82 views

KVM: Multiple bridges over single NIC

In my KVM host (Ubuntu 14.04 LTS) I want to setup one private network for the guests with static IP and internet access. Host is on a remote machine. I've the following configuration in the ...
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57 views

Ubuntu Server stuck at boot (Starting uuid generator uuid)

When I originally installed a brand new server using netinstall and booted a freshly new installed Ubuntu, it wouldn't boot, but I resolved that with the vga=normal nomodeset kernel parameters. Now ...
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211 views

Install LDAP on ubuntu 14.04

I'm trying to configure OpenLDAP on Ubuntu Server 14.04 LTS and Clients (Ubuntu 14.04 and/or Linux Mint 17). It works with su command, ssh or in terminal but it doesn't work on login screen. Just ...
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54 views

tcpd[3674]: connect from unknown (unknown) - Am I being hacked?

Earlier today I had 7 tcpd processes on my server running at 100% cpu for a long period of time. Looking into syslog I found a lot of lines like this: tcpd[11447]: connect from unknown (unknown) ...
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166 views

sudo useradd: cannot lock /etc/passwd; try again later (no lock files)

When doing this on Ubuntu server 14.04: camilstaps@localhost:~$ sudo useradd --home-dir /var/www/xxx.camilstaps.nl/ --no-create-home --root /var/www/xxx.camilstaps.nl/ --shell /bin/sh xxx I'm ...
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20 views

APACHE 2 DNS: DNS for mail server

I am trying to configure my own mail server. My domain name is: exemple.net I've created a sub-domaine (a virtual host an apache2): mail.exemple.net my hostname is: server01 (the name of the server ...
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192 views

HTTPS Not working on Ubuntu Server 14.04 LTS and Apache 2.4

Ok, I've been trying to fix this for about a week but can't find anything that's similar enough to my situation to fix. I'm on a clean install of Ubuntu 14.04 LTS, and I've set up everything on the ...
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32 views

Email server working but can't forward email

So I setup a VPS Ubuntu server and installed an email server mostly using this tutorial as a guide and I can setup virtual users with mailboxes and send and receive email through them. The problem is ...
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41 views

AppArmor on BeagleBoard Black (and probably other ARMv7 devices)

I've installed Ubuntu onto my BeagleBoard, using the instructions at http://www.elinux.org/BeagleBoardUbuntu . This runs the ARM version of Ubuntu 14.04. This all went to plan and it worked, and I ...