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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Print directly to CUPS server from non-local clients (Ubuntu 14.04)

I set up a CUPS server with a few queues and printing from local clients (the CUPS test page and Samba) seems to work just fine. It seems like the CUPS server is denying non-local clients though: ...
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274 views

Ubuntu 12.04/14.04 - apt-get 404 Not Found [IP: local-dns-server-ip 80] through proxy

I am trying to setup an ubuntu server (12.04 or 14.04) and have installed the server image onto the system I am using. Everything works fine until I try to run sudo apt-get update. When this runs, I ...
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1answer
44 views

SSH: how to display a given windows registry settings?

I have 2 virtual machines: VM 1: Windows XP VM 2: Ubuntu I access to Windows XP from Ubuntu using SSH. Is there a command I can run via SSH on Ubuntu to display the settings of a given Windonws ...
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21 views

Lazarus + Postgres Log: Could not receive data from client: unexcpected EOF on client connection

I'm writing an application that runs on a LAN. Workstations: Windows Server: Ubuntu server 12.04 Programming language: Lazarus I can run the program from my XP machine. It connects to the server ...
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1answer
83 views

Stop sending packets to private IPs

I have a problem that my server got locked down because it was sending packets to private IPs. My question is, what is the best solution to stop that? Here is the log that I got from my hosting ...
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1answer
31 views

What account should own the files on a shared ubuntu webserver? [duplicate]

I have multiple users with FTP access to my ubuntu server, each running their own website. Apache is running as default after installed through apt-get. I believe www-data is the apache user. If the ...
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2answers
149 views

Assign fixed IP address via DHCP by DNS lookup

Preface I'm building a virtualization environment with Ubuntu 14.04 and LXC. I don't want to write my own template since the upgrade from 12.04 to 14.04 has shown that backwards compatibility is not ...
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0answers
135 views

VPN pptp connection Unable to pass through linux iptables

I have set up a windows VPN server behind Linux - Ubuntu box that is working as firewall and proxy server. Now I want people from outside to be able to connect to the VPN server, but the connection is ...
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1answer
67 views

Why don't mails show up in the recipient's mailspool?

I have postfix dovecot running with local email system on thunderbird. I have two users on by ubuntu, mailuser 1 and mailuser 2 whom i added to thunderbird. Everything went fine, except the users dont ...
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1answer
18 views

I cannot find the SQLite Instance on Haskell / Snap based server

I have inherited a Haskell based server (on Ubuntu) on which SQLite is being used for authentication through the Snap SQLite-Auth module. After searching the server I am unable to locate the SQLite ...
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0answers
68 views

Does postfix create maildir folder?

How do you make postfix create Maildir/ folders automatically for all users ? I have these two lines in postfix main.cf, which supposed do create maildir folder after the first mail but it is not ...
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1answer
156 views

problems with putty while establishing ssh connection (Ubuntu Server)

since two days I am facing a really weird problem. I have receantly installed ubuntu server 14.04 LTS on a workstation. It has a fix IP address, which I can successfully ping from other computers in ...
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0answers
33 views

Reverse a command and disable su on Ubuntu

Whilst following an online guide on how to secure Ubuntu server, I ran this command on one of my test VM's. sudo dpkg-statoverride --update --add root admin 4750 /bin/su I know the intention of ...
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1answer
46 views

Disable ClamAV for Amavis

I have a Postfix mail server, using Amavis and Spamassassin to check for unwanted e-mails. I have removed ClamAV because it'd basically freeze the whole server every time someone received an e-mail, ...
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0answers
41 views

How to avoid Installation Complete messege after Ubuntu installation finished

I am using preseed file to fully automate Ubuntu Desktop 14.04 LTS edition, I successfully preseed all questions but at the end of installation it prompt and ask following question: Installation ...
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2answers
64 views

tftpd allows connections, but times out transferring a file

I'm runnung Ubuntu 12.04 in a VirtualBox VM. I've installed the tftpd-hpa package. I'm using this to boot an embedded Linux system, and I've noticed that on first boot of my VM, it wouldn't work, but ...
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1answer
54 views

Email administrator when a duplicate IP is found on the network

It was suggested that I ask this question on serverfault. I know this is a bit of a custom requirement but I was hoping someone currently has (or can put together) a script that checks for duplicate ...
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0answers
50 views

How to change IP address according to sender in Postfix?

I need help.I am stuck for too long now.I have setup a postfix server on my system.Now i want to change the IP corresponding to the sender.For that i used sender_dependent_transports and configured ...
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1answer
48 views

Start kippo on Ubuntu startup

I'm setting up a new Ubuntu 14.04 server and followed these instructions to install kippo (the SSH Honeypot). To run kippo, I do: su kippo ~/kippo/start.sh The contents of start.sh is simply: ...
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0answers
31 views

Ubuntu : apt-get command error

I work with Ubuntu 10.04 everyday. Several days ago, when I release command sudo apt-get install .... it run very good, no error. I also able to open websites with my browser with no proxy. But, ...
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3answers
162 views

Upgraded Ubuntu, all drives in one zpool marked unavailable

I just upgraded Ubuntu 14.04, and I had two ZFS pools on the server. There was some minor issue with me fighting with the ZFS driver and the kernel version, but that's worked out now. One pool came ...
1
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1answer
41 views

Locked out of my own MySQL Database [duplicate]

I logged into my SQL server today using PhpMyAdmin, and it seems to be acting weird throwing random [Token Mismatch] errors, only while trying to create a new user account. I tried multiple times, ...
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1answer
22 views

Dpkg: After comparing config files, how do I revert back to make my choice?

I'm part way through a fairly large apt-get upgrade which had 65 packages to be updated. I've gotten to a config file "merge conflict" where both my local config (containing a licence key) and the ...
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1answer
40 views

Server Memory with Magento

I have a cloud server with the following specifications: 2vCPUs 4G RAM 160GB Disk Space Network 400Mb/s System Image: Ubuntu 12.04 LTS I am only running Magento CE 1.7.0.2 on this server. Nothing ...
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1answer
32 views

Sendmail configs and logs look correct, but I get no mail

I used this tutorial to config sendmail on Ubuntu. Followed every step and when I test it, it seems to have worked, but I get no mail (not even on the spam folder) Below is the log for a test ...
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1answer
111 views

How remove HAProxy complain while restarting?

When sudo service haproxy restart the following message show up: [WARNING] 145/113237 (6021) : config : 'option httplog' not usable with proxy 'mysql' (needs 'mode http'). Falling back to 'option ...
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1answer
33 views

Should Rails apps be run by a system user or a regular user?

In a production environment on Ubuntu (12.04), should a Rails app be run by a system or a regular user? I'm creating a dedicated user to running the a rails app and I'm not sure whether to create a ...
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1answer
176 views

Ubuntu 12.04.4 LTS PXE server setup

I am setting up an Ubuntu 12.04.4 LTS PXE server. So here are the steps I proceeded with: Setup my DHCP server Setup my TFTP server Setup my NFS server I place the initrd.gz and kernel in the ...
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0answers
70 views

php-fpm process in D state ,cause nfs wait rpc_wait_bit_killable

my wordpress site which is in clustered environment using NFS,nginx,php-fpm,mysql the infrastructure is hosted on amazon ec2.Under high load/traffic the php5-fpm process goes in D ...
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1answer
45 views

S/W RAID6 and 4k sector format — slow resync

I'm looking for reason why Linux software RAID-6 re-sync is much slower than I expected. I have used 6 WDC WD40EFRX HDDs (with 4k physical sectors) to create RAID-6 array. $ sudo mdadm -v -C ...
3
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2answers
95 views

reliable virtual desktop environment for Amazon EC2 Ubuntu

I have an ubuntu 13.04 instance in the Amazon EC2 Cloud. I am trying to run some java programs on the server that require a GUI desktop environment. I need just 1 desktop instance to connect to via ...
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1answer
389 views

Ubuntu 14.04 KVM host - not allocating KVM guest correctly, high load

Encountering an odd issue with Ubuntu 14.04 KVM hosts/VMs. We have a number of physical machines, all the same spec, but when we try and start the same type of KVM image (OpenNebula is managing the ...
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0answers
42 views

ChrootDirectory for SFTP user in virtual host directory with write permissions and SuPHP

I am trying to give a SFTP user (user2) writeable access to a virtual host directory (website) in /var/www/mywebsite under Ubuntu 12.04. I have setup sshd_config to use Chrooting so that this user ...
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1answer
179 views

Subdomain Configuration on Ubuntu nginx Server

First of all, I'm sorry for my bad English. I'll try to explain my aim as much as possible. I'm using a 2 Core and 2 GB memory VPS with 1 dedicated ip address from Digital Ocean for my project. I'm ...
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0answers
39 views

heartbeat doesn't work on virtual interface

I try to use vertual interface as broadcast for heartbeat(bcast in ha.cf). When I try it I see this message in syslog: May 23 12:17:26 Ubuntu2 heartbeat: [1107]: ERROR: glib: Error setting socket ...
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8answers
156 views

Can I (practically) block access to the SSH port to my country only?

I'm thinking that blocking access to the SSH port to allow for my country only is an obvious step, but I can't see a practical way to do this. I'm in the UK if it matters. I have full access to the ...
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1answer
71 views

Can I use NAT64 to route public IPV6 traffic to internal IPV4?

I have a bunch of public IPv6 addresses and some services that run IPv4 only. Can I use NAT64 to connect these services? Is there another solution like a proxy or something?
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2answers
236 views

fail2ban not working on fresh install of ubuntu 14.04, why?

After installing and configuring fail2ban, I tried to login to my server through ssh with a wrong password. After a few attempts, I tried with the correct password with success. So, fail2ban didn't ...
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2answers
54 views

Diagnose a server crash, possibly CPU temp

I have a desktop running as a ubuntu server at another office. Lately its been shutting itself down once in a while, and I'm a bit unsure how to diagnose this. The syslog looks like this: May 20 ...
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1answer
32 views

A mount of box.com as davfs2 hangs and does not become unstuck

I have mounted box.com on a Ubuntu 11.04 system, and it worked fine. For a day. It is mounted with the davfs2 file system. But after a day it froze, and all shells that try to list or do anything ...
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0answers
30 views

nginx upstream host setting with memcache

I want to setup a nginx setup with memcache enabled for pages as pointed out in page https://www.igvita.com/2008/02/11/nginx-and-memcached-a-400-boost/. First I tried nginx web server (with php-fpm ...
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1answer
43 views

Permission samba shared www folder

I'm having trouble with permissions on a samba shared folder on ubuntu server 14.04. This is the www one. But actually, it's in /home/administrateur. As I want to preserve my www folder whatever ...
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1answer
38 views

postgres stopped - how to restart?

my postgresql (9.3.4) was running on Ubuntu, and suddenly stopped tonight. When I try to stop it, logged in as postgres, I get ~$ /usr/local/pgsql/bin/pg_ctl -D /usr/local/pgsql/data stop; pg_ctl: ...
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1answer
35 views

LXC not respecting netmask on Ubuntu 14

I have a LXC machine configured with bridging so that it has its own public IP address and is accessible over the internet. Even though it's working, the netmask address set in the VMs ...
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1answer
79 views

Ubuntu 12.04 randomly dropping network connections

Good day, Few days ago I've installed new server on Ubuntu 12.04 and migrated all my data and services to it from an old one (pretty outdated 2011 year server). There are many different services ...
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26 views

Regarding with the apache configuration

I registered a domain in GoDaddy.I setup a few items in my A records: subdomain.mydomain.com 1.2.3.4 mydomain.com 1.2.3.4 www.mydomain.com 1.2.3.4 In my ubuntu server apache virtual ...
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2answers
21 views

How, under Ubuntu, can I get Wordpress past this error (GD Library not installed)?

A Wordpress installation I am working on, for some images, is giving an error, "GD Library Error: imagecreatetruecolor does not exist - please contact your webhost and ask them to install the GD ...
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1answer
227 views

How to install GD library in php?

when I tried to use imagefromjpeg() function in PHP,it throwed error.So, I tried to install GD library using the following command: sudo apt-get install php5-gd But I got the following error. ...
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0answers
39 views

npm install -g nodemon get stucked while installing

I am trying to install nodemon but everytime the installation get stuck at the same part. It get a response, but didn't end the job. I have to stop it after some minutes with the state bellow. I ...
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0answers
54 views

Compile nginx from source with PCRE-JIT support on Ubuntu 12.04

The latest version of PCRE library available to Ubuntu 12.04 does not support JIT features (support available in >= 8.20), so any self-compiled nginx on Ubuntu 12.04 will not have pcre-jit. So what ...