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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BIND 9: Testing the Reverse zone gives error, NS '' has no address records (A or AAAA)

I am trying to create a ptr record. I read a tutorial on https://help.ubuntu.com/10.04/serverguide/dns-configuration.html and now I have spend almost the whole day to fix it but could not figure out ...
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36 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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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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1answer
133 views

Why upgrade from 12.04 LTS to 14.04 LTS

We have been using 12.04 LTS already for a couple of years but we are considering to move to the next LTS version which is 14.04. It was released on April 2014 I so was wondering how people consider ...
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1answer
25 views

ubuntu 12.04 combine hard disk partiions

I´ve a Vm with Ubuntu 12.04 installed. Thus the hard disk is running out of disk space my plan was to increase the disk space and after that expand the existing root logical volume with a newly ...
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1answer
86 views

Getting “Received too large SFTP packet” error when connecting with root account to the server via WinSCP

I've tried different ways and read some solutions including these: Why I am not able to ssh as root? Editing with Winscp And an article from Forum of Ubuntu I don't understand why when I connect ...
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1answer
260 views

Weird network problems with Vagrant, VirtualBox, Ansible and Ubuntu Server box

We are using Vagrant and Ansible to provision VirtualBox machine. It was working great, but recently we've started to encounter some weird network problems with tasks that require access to the ...
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39 views

Samba Roaming not working

I had configured Samba as domain controler on Ubuntu 14.04. I can register computers(WIndows 7) to the domain but the roaming profile does not work. smb.conf looks like: # Global parameters [global] ...
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1answer
22 views

Setting up additional breadcrumb re-direct using mod_rewrite

Currently I have mod_rewrite configured as follows: <VirtualHost *:80> ServerName address.website.org ServerAdmin webmaster@website.org DocumentRoot /var/www Redirect permanent / ...
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0answers
31 views

Squid hangs after 15-20 minutes

I have tried to implement the squid proxy server, it worked fine initially but after 15-20 minutes it started hanging, i mean i had to restart the squid services to work it fine. I have changed the ...
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0answers
22 views

What exactly is a “SWAP FILE” when dealing with RAM in a Linux machine? [duplicate]

What is a swap file and what does it do? How do it increase the RAM and are there any downsides? Why use swap file vs. getting more RAM? Does swap file hurt the CPU IOPS? I understand that it some how ...
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1answer
26 views

Mail Server Running but not receiving emails

I am running Ubuntu and I am trying to setup my mail server using ISPConfig 3. Here is the error I am getting: Mail Queue (Server : droplet.domain.co.za) Data from: 2014-07-16 12:40 -Queue ID- ...
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1answer
33 views

limits.conf not being read when logging in

I have 2 entries in my limits.conf, * hard nofile 10240 * soft nofile 4096 but running ulimit -Sn or ulimit -Hn only displays the default values. ...
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2answers
79 views

adding 2nd private IP on AWS EC2 instance

I am having problems adding a 2nd IP on AWS EC2 instance. I am running Ubuntu 14.04. I already tried this: a) Right clicked the instance and added a 'private IP' from the manage Private IP. b) ...
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1answer
31 views

bind9 restart fails - saying permission error

am new here, i will be happy if i get some clue from you for my issue, i have installed the bind9 in Ubuntu, it was successful in install and able to see the bind9 running, then did a config based ...
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0answers
160 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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1answer
57 views

stop an apt-get upgrade

I was trying to upgrade just a single package, so I typed sudo apt-get upgrade packagename. (Now I know I'm supposed to use apt-get install for that.) Now apt-get is upgrading everything in my whole ...
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1answer
67 views

Nginx unmet dependencies over Vagrant / Puppet

I have no such issue on 64bit Ubuntu Precise, but once I tried to start 32bit machine, it failed on this command: # /usr/bin/apt-get -q -y -o DPkg::Options::=--force-confold --force-yes install ...
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1answer
69 views

Corosync dynamically add node

I have been experimenting with Pacemaker & Corosync for a HA setup. I installed it on two Ubuntu 14.04 Linode's and after a lot of back and forth on outdated config examples and tutorials, managed ...
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1answer
51 views

How to make “\n” a new line in terminal?

I'm trying to view the HHVM log in a friendly way - currently it just comes out as a giant block of text. I've noticed there are various instances of "\n" in there. How can I get my terminal (gnome ...
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24 views

Djapian in Ubuntu trusty

I'm trying to migrate my Django server to a new server running Ubuntu trusty (the last one ran lucid). I've got almost everything working except for Djapian: when I run python manage.py index ...
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1answer
54 views

SFTP restrict users to a few directories

I run a game server and I have a few people that I want to give access too the server to help develop. I am trying to let them have access to only these directories /var/www/Update /root/gamed/config ...
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1answer
62 views

Why isn't my server responding on port 443?

I have an EC2 server on AWS (Ubuntu 13.04). It's currently running a website on port 80 and I am trying to set up SSL. Right now it does not seem to be responding at all on port 443. telnet: Unable ...
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1answer
69 views

Managing differences in Ubuntu and CentOS features when deploying app

We have a problem that our programmer uses Ubuntu to develop advanced php application (advanced because he installs many extensions/seperate databases/utilities) and the problem is that whenever he ...
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1answer
94 views

Ubuntu server with high load on virtualbox

I have a an Ubuntu 12.04 x64 image, which i use for different customers on different virtualisation systems. Current customer uses VirtualBox and the system has a high load on it and response very ...
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51 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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46 views

Load average of a server

Can some one suggest me how we can predict the healthy or dangerous(Reached max value) Load average . Is the rule to distinguish is same for all the server or we have to consider the RAM and processor ...
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2answers
68 views

Can't configure httpd.conf

I have some problems with httpd and can't configure it(can't open in browser). I have done it a lot of times, but now I missing something. I have installed CentOS 6.5 on virtualbox with ubuntu 14. ...
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2answers
60 views

Bind9 - local configuration is it important

I have a dedicated server and i have DNS and web server on the same server. To configure the DNS i have used BIND ... BIND comes with default configuration for localhost like 127, 0 , 255 and ...
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2answers
35 views

Forward Clients to New Server using iptables

Clients are connected to a server A by connecting to the domain name address www.example.com:4444, where www.example.com resolves to the IP address of server A. Question: In order to provide a ...
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1answer
38 views

High server load detected and server automatically stopped

For the last month, my VPS has been experiencing spikes in server load, and the server shuts down as a result and I have to restart it manually. This doesn't happen everyday, but it has happened at ...
2
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1answer
49 views

What to do if rkhunter finds a possible rootkit?

ran rkhunter tonight, and I got this for the results: [04:17:34] System checks summary [04:17:34] ===================== [04:17:34] [04:17:34] File properties checks... [04:17:34] Files checked: 133 ...
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1answer
25 views

Tons of apache processes running on a very low traffic development server

I have a development server that is having memory problems. There is little to no traffic on this server because it is a dev environment, but apache is spawning tons of processes and using up a lot of ...
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2answers
488 views

Ubuntu 14.04 PXE boot with initrd (initramfs) kernel panic [duplicate]

The short story is this (as I understand it): I can't boot ubuntu over LAN (PXE boot) with the help of initramfs without compiling my own kernel. As I see, the problem is this: network interface ...
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1answer
141 views

How do you repair a Ubuntu 14.04 RAID-LVM-DM-CRYPT-LUKS Physical to Virtual system that won't boot?

I can't get a Ubuntu 14.04 Virtual server to boot correctly. It's recently been cloned "dd if=/dev/sda of=vmimage" The Physical has a RAID1-LVM-DMCRYPT-LUKS configuration, The boot sequence aborts and ...
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50 views

What is using all of my memory on Ubuntu 12.04?

I keep getting alarms from Rackspace telling me that my memory usage is too high, but I can't seem to find the culprit. I ran top SHIFT + M to see top output sorted by memory, and this is what I get ...
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1answer
45 views

Ubuntu server rename - can not resolve host

I renamed an Ubuntu 14.04 server (changed name in hostname) and now when I sudo I get a can not resolve host {nane} message. The command still works though. Do I need to change another file to bind ...
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0answers
45 views

Unable to connect Zentyal 3.2 to WiFi network

I've just installed Zentyal 3.2 as 3.4 wouldn't work with a USB keyboard, and it's all installed fine. However I'm trying to connect my server's wlan0 to my WiFi network so that my laptop can connect ...
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3answers
68 views

OpenVPN client connects but only loads SOME websites

I set up OpenVPN server on a Ubuntu 14.04 VPS using OpenVZ. I can establish a connection to the VPN with a client. I can access some pages like Google and twitter but a lot of sites fail to load. I ...
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2answers
60 views

df showing 28G of total space, du showing size of '/' as 400+ G

I constantly get the unable to write to * error, even though I cleaned up a bunch of space. df thinks my disk is 28G in size and 100% full after I deleted a lot of unused files: $ df -h Filesystem ...
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1answer
55 views

File descriptor limit in nginx/Passenger app

We're running a Rails app in Passenger 4.0.45 and nginx 1.6.0 (installed by Passenger installer) running on Ubuntu 14.04. Under heavy load Passenger restarts all of the application processes. After ...
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1answer
22 views

nginx rate limitinf unknown directive

I'm trying to set up a rate limit for bots using my website, but if i add limit_req_zone $binary_remote_addr zone=one:10m rate=1r/s; or anything of the sort to /etc/nginx/nginx.conf in the http ...
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1answer
21 views

How to change the default timeout configuration file for composer

I've been searching all over the internet and I can't seem to find any help as to where my composer's configuration file is saved to. Basically what I'm trying to do is change the ...
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0answers
66 views

Ubuntu 14.04 and SADMS in Windows domain. Domain user password for sudo

I'm installed Ubuntu 14.04 and joined it to Windows domain with SADMS. All works good, but when I'm using something that need "root" rights (sudo for example) I need to enter domain user password, but ...
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1answer
31 views

debug mysql crash

I have a production server which I am managing and I have been running a rails application on this server. The issue has happened twice in the past month or so and I am not sure how to debug this. ...
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2answers
321 views

GlusterFS failing to mount at boot with Ubuntu 14.04

Previously I asked about mounting GlusterFS at boot in an Ubuntu 12.04 server and the answer was that this was buggy in 12.04 and worked in 14.04. Curious I gave it a try on a virtual machine running ...
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1answer
206 views

Unable to setup Kerberos on Ubuntu 14.04 - krb5kdc: No such file or directory - while initializing database for realm myrealm

I'm attempting to follow the guide on the Ubuntu wiki for installing and setting up Kerberos. I am running Ubuntu 14.04 (LTS) 64-bit. I have setup avahi-daemon in order to provide .local DNS names. I ...
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1answer
67 views

Did grub updating bring my server down?

I have an Ubuntu 12.04 server. Last night I installed a few updates using apt-get dist-upgrade, including grub, and rebooted. After rebooting, I couldn't boot into Ubuntu. I just get a big flashing ...
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1answer
101 views

How to determine the values for an LDAP bind to a Windows Server 2012 DC? [ldap_bind: Invalid Credentials (49)]

Sigh. I have been trying for nearly 6 hours to get my Gitlab deployment to authenticate via Windows Server 2012 Essentials Active Directory LDAP. I am running Ubuntu 14.04 for my Gitlab server. ...
2
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1answer
143 views

Using Samba for AD and file sharing

We use a combination of Samba and WinBind to allow AD logins on an Ubuntu 12.04 machine. We also use Samba as a file server. We do not want Samba file shares to work for AD logins, but only local ...