Ubuntu Linux is a Debian derivative that aims to bring Linux mainstream. Questions on this site should generally refer to Ubuntu Server. Note that http://askubuntu.com is specifically dedicated to Ubuntu questions.

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329 views

GPU access on docker.io container

I have an app that can only be run in in X11 environment with full GPU access/hardware OpenGL. I can run it on Hetzner servers as their machines have decent GPUs. Ubuntu desktop is installed and it ...
3
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0answers
157 views

Apparmor externally included hats not working

Running apache2 on Ubuntu 12.04, using mod-apparmor for change-hat support. I have installed and verified that change-hat is working but that it is not working for externally included hats like the ...
2
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179 views

iproute multiple ADSL load balancer through VM

For a long time (2 years?) I have been running a virtual machine (Ubuntu 12.04 server) with a very basic outbound load balancing capability, sending different outbound connections out different ADSL ...
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65 views

System clock jumps over 50 seconds randomly

Having a really strange and frustrating issue with system clocks across a few (non virtualized) Ubuntu 12.04 servers. The system clock jumps unpredictably by over 50 seconds. Here's a part of the ...
2
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0answers
332 views

Is there a way to log a per request unique id for nginx?

There appear to be a couple of third party modules for this https://github.com/newobj/nginx-x-rid-header https://github.com/hhru/nginx_requestid However if possible I don't want to rebuild nginx, ...
2
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0answers
42 views

Change the logical volume

I am quite new this snapshot process. Let, I have three logical volumes as A, B, C. I worked on logical volume C. But accidentally when I restart the system, it goes to the snapshot A. How can I ...
2
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0answers
62 views

EC2 Ubuntu SSH Stops Working

I use about 15 EC2 instances to run some services. They are hosted on EC2 and run Ubuntu. Every once in a while the SSH stops working and the "Reachability Status" in the EC2 console shows that it is ...
2
votes
0answers
254 views

How to preseed options before network in Debian/Ubuntu PXE installation?

I'm trying to fully automate an Ubuntu installation over the network, but the preseed file is loaded only after the network adapter detection. Even with those options in the preseed file the ...
2
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0answers
48 views

Apache2 serves gibberish after 2.4 upgrade

Problem: Apache 2.4 on Ubuntu Linux 13.10 serves gibberish instead of content over https: using AuthBasic and .htpasswd-based authentication. Here's an example: ...
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0answers
120 views

Having trouble installing Racoon and Strongswan on the same system

I have two applications that I need to run, one uses Racoon for establishing IPSec tunnels and the other uses Strongswan. Therefore, I need both Racoon and Strongswan installed simultaneously on my ...
2
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0answers
78 views

Server clock runs fast - sometimes

I have 12.04 Ubuntu servers that make a radio link once per hour to send updates and sync clocks. The clocks all stray by about +/- 0.6 seconds per hour, which is expected based their crystal ppm. ...
2
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0answers
334 views

Networking with lxc containers with local dhcp and external ipv6 double bridge problems

I want to use both ipv6 externally on all my containers, and ipv4 external only on the hosts. I am using Ubuntu 12.04 64bit. For ipv4 on the container I use the DHCP that came with the lxc ...
2
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138 views

Nginx gives 404 error for rails app except the root

I have an Ubuntu 12.04 LTS VPS server that serves a static website with Nginx. I would like to set up a rails application that is accesible from the subfolder 'foo'. I use Passenger for serving the ...
2
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0answers
65 views

How do I get Ubuntu to forget about a destroyed zfs pool?

I have also asked this question over on Ask Ubuntu but I thought I'd try here as well. The details can be found at: ...
2
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0answers
212 views

Samba deadtime not working

I have a server where I want to limit the amount of concurrent connections to Samba due to performance reasons. So I have max connections = 5 Which works fine. However, people who have connected ...
2
votes
0answers
177 views

Manual Multicast forwarding with Linux router

I have a Linux router (Ubuntu). It is working well with unicast but with multicast routing/forwarding I have some trouble. The problem is that my hosts do not send igmp/mld messages thus the router ...
2
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0answers
400 views

Group membership erratically lost after user logs in - Ubuntu, winbind, AD

I have a really strange issue where the wbinfo -g command properly indicates the AD domain group I am interested in and shows a particular user in that group - this is always true, so on the linux ...
2
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0answers
147 views

Ubuntu traffic shaping by source mac address or destination host

Is there an easy way to manage traffic shaping/bandwidth monitoring to limit traffic based on source mac address and/or destination server address?
2
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0answers
592 views

netatalk 3.0 wont start on ubuntu server

Netatalk 3.0 built from sources using ./configure --with-init-style=debian --enable-debian On startup i'm having troubles: Aug 09 01:30:11.415825 netatalk[15692] {netatalk.c:162} (N:AFPDaemon): ...
2
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0answers
163 views

Ubuntu: How to force default ACLs to take effect for newly created files/dirs?

I've created the following ACLs for a directory: # file: . # owner: www-data # group: root user::rwx user:www-data:rwx user:deploy:rwx group::--- mask::rwx other::--- default:user::rwx ...
2
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0answers
176 views

Is there an alternative for the Intel WebConsole for managing the RS2WG160 RAID controler on Ubuntu?

I have a server with 16 HDs connected on an Intel RS2WG160 Raid controller and I would very much like to know the state of the disks using the Web Console that Intel provides. The problem is that ...
2
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0answers
233 views

How do I print, identified as an AD user, from an Ubuntu client to a Windows print server?

I know my question may be confusing, so I'll clarify. I'm an admin at a school and am setting up the labs to use Ubuntu (12.04). Users already can authenticate against Active Directory (currently ...
2
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0answers
218 views

checksecurity / setuid changes, is this a bug or did somebody break in?

I received a mail by checksecurity from my ubuntu 12.04 server with the following content: --- setuid.today 2012-06-03 06:48:09.892436281 +0200 +++ /var/log/setuid/setuid.new.tmp 2012-06-17 ...
2
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0answers
303 views

linode cloud server, symfony and phar

Okay, So I've recently got a linode cloud server running Ubuntu 12.04. I got it configured with the default symfony2.0 installation, but I've got a project that runs on the Symfony2.1 installation.. ...
2
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0answers
377 views

NFS inherit permissions from shared directory - Mac OS client

Short question: Is there a way to have files on a NFS share on a Mac OS client inherit the permissions of the shared directory? Scenario: Ubuntu 12.04 server Mac 10.7.4 client shared directory has ...
2
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0answers
384 views

Ubuntu SOCKS proxy setup with two interfaces - how to pass DNS

I setup a SOCKSv5 server (Dante) on Ubuntu with two ethernet interfaces: eth0 is connected to my WAN with a static routable IP eth1 is connected to my LAN with a private IP I have a client ...
2
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0answers
649 views

Nginx doesn't seem to stop correctly

I'm using the following script to start/stop nginx: #! /bin/sh ### BEGIN INIT INFO # Provides: nginx # Required-Start: $all # Required-Stop: $all # Default-Start: 2 3 4 5 # ...
2
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0answers
667 views

“Error: Unknown error” when trying to start virtual machine from VMware server

Problem We are running VMware Server 2.0.0 build-116503 on a Ubuntu 10.04 LTS server. There is a virtual machine installed, running Lotus Domino on Windows Server 2003. Ever since a sudden power ...
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0answers
875 views

HT Link Sync Error after Ubuntu 10.04 LTS Installation

Update 1 I just assembled an exact replica of this server, and successfully installed Ubuntu 10.04 LTS in a RAID10 configuration. The success was confirmed by a login to the initial account. There ...
2
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0answers
125 views

apparmor: same profile for multiple apps

so I have: #include <tunables/global> /usr/bin/python2.7 { /** mixrw, deny /** lwk, } /usr/lib/jvm/java-6-openjdk/jre/bin/java { /** mixrw, deny /** lwk, } ...
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0answers
525 views

Getting ipsec-tools to work between Ubuntu Lucid hosts

I have two hosts, one is Charity with IP 67.207.128.184, the other is Hope with IP 67.207.130.204. I've installed the ipsec-tools package on each host. I have not installed racoon on either host. ...
2
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0answers
1k views

How does one configure networking on OpenStack?

I've been playing with Openstack, but I can't get the networking to function correctly. I'm just trying to get a single server going. I can bring up instances, but they get stuck at the BIOS loading ...
2
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0answers
1k views

SSH to an ubuntu machine using avahi

I have an ubuntu box that I connect to using avahi. Connecting to that box works fine for all services (I regularly use AFP, SSH and SMB on it) but I've noticed that whenever I connect to it from a ...
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0answers
26 views

Basic auth not working in Apache 2.4

I know it seems a simple task and I did it many times for Apache 2.0-2.2 but in 2.4 config doesn't work. I am trying to configure basic auth for directiry: <Directory /var/www/html/docs> ...
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0answers
20 views

PureFTPD can't list web root when files are uploaded

I've finally made the step forward and signed up for a VPS server in exchange for my obsolete shared hosting account. I'm running Ubuntu 14.04 x32 on a VPS from DigitalOcean. On top of the VPS I have ...
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0answers
68 views

Sendmail in Ubuntu always fail [outgoing SMTPS(465)]

I'm using sendmail in ubuntu hosted at amazon ec2 hosting. Also I have a paid account (domain) in godaddy, so I want to use godaddy as relay host. I did EVERYTHING based on this tutorial: ...
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0answers
103 views

Ubuntu 14.04 KVM Host - Only network device pcnet working

I've installed a KVM host on Ubuntu 14.04. I've added a networking bridge as br0 and also added the p4p1 network adapter to it. My problem is now that only the "pcnet" networking guest driver is ...
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0answers
34 views

force dhcp server to always run

I have an Ubuntu machine with two Ethernet network interfaces and on one of them I am running a DHCP server (isc-dhcp-server). I noticed that the server daemon stops running whenever I suspend the ...
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0answers
57 views

sendmail only connects to localhost

I tried to solve this issue exactly for 7 hours, no luck. I tried postfix at first for several hours, finally I understood that SSL/TLS is deprecated in postfix and I kept receiving "unimplemented ...
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0answers
66 views

passwd: Authentication token manipulation error

I am running a Ubuntu 12 machine, and have recently been working to secure it. I made all the changes from this guide. I am not running a Linode, but I used these as a starting point for setting up ...
1
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0answers
29 views

EC2 instance won't allow pinging

Ive got an EC2 instance with an iptables config as follows: *filter :INPUT ACCEPT [121:8012] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [64:6240] -A INPUT -p icmp --icmp-type echo-request -j ACCEPT -A ...
1
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0answers
113 views

Haproxy using 10GB Memory and 100% CPU with 50k connections

On a Ubuntu 14.04 x64 server, Haproxy uses 3.3 GB of memory and 6.8 GB of swap, while handling 52k connections. The CPU usage also keeps spiking to 100% before most of the traffic was redirected to ...
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0answers
39 views

ping: sendmsg: Operation not permitted (sometimes)

On a Ubuntu 14.04 running Haproxy, after a service haproxy reload, Haproxy is suddenly reporting all servers behind it as down. After some digging around, I noticed that ping is not working properly, ...
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0answers
17 views

LXDE Desktop shortcuts layout configuration files

I am working on Lubuntu 14.04 LTS with LXDE Desktop Manager and I would like to change default Desktop icons layout. (These are shortcuts for some application). By default, these icons are layered at ...
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0answers
195 views

Ubuntu 14.04 mdadm issues on boot

I have a 14.04 Ubuntu machine which has: 2 x SSD in RAID 1 (md0) 3 x Sata HDD in RAID 5 (md1) The machine is set to boot from the md0 device. This machine has been running fine for a month or so, ...
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0answers
57 views

cron.weekly runs on wrong day of week on Ubuntu

I have this line in my /etc/crontab: 47 6 * * Sat root test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.weekly ) So the cron.weekly should be started every Saturday ...
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0answers
52 views

HBase issue with *some* regionservers connecting

I have an HBase cluster that is working, and I'm attempting to add some new servers to the cluster, but "SocketException: Invalid argument" and "FailedServerException: This server is in the failed ...
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0answers
40 views

Two port PCI serial card. One port can only set baud rate once

I have a new PCI serial card, being used on a Ubuntu 14.04 box. It's serial ports show up as /dev/ttyS4 and /dev/ttyS5. $ dmesg | grep ttyS [ 0.732690] 00:03: ttyS0 at I/O 0x3f8 (irq = 4, ...
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0answers
58 views

Nginx proxy pass not working sometimes

I have a proxy server (ubuntu) that can accessible via my global IP (not have domain). For Example 85.45.0.12:6021 and this reverse to local server. Local server (10.0.0.25) installed tomcat and ...
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0answers
174 views

Client SSL fails with GlusterFS 3.5

I'm running GlusterFS 3.5 from the official Ubuntu packages on Ubuntu 12.04 and when I enable client.ssl, mounting starts to fail. The error I'm getting is: [2014-06-13 10:33:52.690770] E ...