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Questions tagged [ubuntu]

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.

Ubuntu Linux is a Debian derivative that aims to bring Linux mainstream. Ubuntu is named after the South African philosophy of "humanity towards others," and the community observes a Code of Conduct in an effort to keep the project civil and appealing to novices.

Ubuntu versions are released every six months, following a YEAR.MONTH pattern. For example, the release codenamed Maverick was officially published October 10th 2010 as Ubuntu 10.10. Each release gets the software from the Debian Unstable repository, freezes it and fix and adapt it to Ubuntu philosophy.

A list of Ubuntu releases can be found here

Ubuntu Linux is backed by Canonical Ltd., a company founded and funded by South African Mark Shuttleworth, entrepreneur and Debian Developer. The focus of Canonical is to provide support and services to Ubuntu Linux Desktop and Server editions. Canonical employers sometimes develop to Ubuntu and Debian at the same time, that way keeping the contributions flowing back to Debian.

There is a Stack Exchange site dedicated to Ubuntu which is a good place to ask any Ubuntu-related questions.

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Boot failure with root on MD (RAID1) + LVM: udev event timing

A fresh install of Ubuntu Server 13.10 (x64) is having problems booting from its root volume located in md+lvm. I've kludged a solution for now, but I'd like to understand more about what's going on and what better solutions there might be. Since…
strix
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Setting up a postfix email server

When I set up an email server using postfix on ubuntu server, how do I make sure that it won't be an open relay??
fnord_ix
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Slow boot and dns doesn't work

I don't understand what happened because i didn't change anything in system for quite a long time. Now system boots too slow and when it's booted - dns requests don't work. I can ping remote hosts by ip but can't request them by names. Here's what…
Dmitrii Mikhailov
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Why is crontab file periodically overwritten?

I have a Ubuntu 12.10 server with an nginx user that I use to edit a crontab file. Periodically (maybe once every few hours? it's hard to tell), I notice that edits I have made as the nginx user have been deleted, and when I type crontab -e my last…
Mark Davies
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Ubuntu server 12.04.03 not checking disk partitions on reboot?

My MOTD is showing: *** /dev/md2 will be checked for errors at next reboot *** *** /dev/md1 will be checked for errors at next reboot *** *** /dev/md3 will be checked for errors at next reboot *** However, a standard sudo shutdown -r now does not…
jamesc
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build-essential: no installation candidate *sometimes*

I'm having a reoccurring issue when sometimes build-essential isn't available while trying to setup ubuntu 12.04.2 on AWS (using ubuntu provided ami: ami-ce7b6fba). Script that sets up the instance: set -o xtrace set -e sudo apt-get update sudo…
Andrei Serdeliuc
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SSH tunnel speed is very slow

I have remote server with Ubuntu Linux and I want to establish SSH tunnel with this server from Windows machine using PuTTY(plink). I have to use this method for getting access to some service on this server, because firewall is blocking all ports…
John Green
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Monit — Daemonize non-daemon process?

I have a ruby process that don't run as a daemon (it runs in the foreground), but can generate a pid file. My question is does Monit always expects to monitor background/daemonized processes? I used Bluepill in the past, and that was the default…
allaire
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Is this a sign of dying hard drive?

Today I wasn't able to access one of my hard drives, after reboot it seems to work now, but i'm worried it's going to die soon. /var/log/messages Jul 4 17:05:02 host-37 kernel: [401496.020869] ata8: EH complete Jul 4 17:05:02 host-37 kernel:…
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Extending partition on linux gparted but not more space in the vm

I have a vm test installation of a linux running a build server. Unfortunately I just pressed ok when adding the disk and ended up with an 8gb drive to play with. Well into the test the builds are consuming more and more space, of course. The vm…
Asken
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Where is the runuser command on Ubuntu Server?

When I type in my console "runuser", I am getting "command not found". I though this command was pretty standard, but I cannot find it on my system. I am on the root user but I do not have the password of the other user.
user37220
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What is this in my syslog and should I be concerned?

I'm seeing a lot of the following line in /var/log/syslog: Jun 21 14:36:15 my-server kernel: [416219.080061] iptables denied: IN=eth0 OUT= MAC=ff:ff:ff:ff:ff:ff:the-mac-address:08:00 SRC=0.0.0.0 DST=255.255.255.255 LEN=328 TOS=0x00 PREC=0x00 TTL=128…
orokusaki
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Is there a way to make TLS work with rsyslog in Ubuntu 12.04?

I configure rsyslog to load the TLS module (to talk to loggly) and I'm getting this error: Jun 20 13:14:00 feynman rsyslogd-2068: could not load module '/usr/lib/rsyslog/lmnsd_gtls.so', rsyslog error -2078 [try http://www.rsyslog.com/e/2068 ] that…
Pablo Fernandez
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Where ZFS configuration is saved?

I have a simple setup: Ubuntu 13.04 on internal USB thumbdrive 4xSATA drive in raidz spool with some volumes /tank/vol1, /tank/vol2 Where does zfs store its' configuration data - is it on member drives of zpool? What would happen if USB…
Sergei
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Saved Kitty Password Extraction

I am having a ubuntu server and forgot the root password. I could not find the pass in any documentation (My fault). Now I have another user which is in the sudo list but the password of that user is saved in kitty which I also dont remember, I can…
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