Ubuntu 12.04, named "Precise Pangolin" is the current Long Term Support (LTS) release of Ubuntu Linux. LTS releases receive updates for 5 years and have available paid support from Canonical. The version number comes from the year and month of release (April of 2012).

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Locked myself out of SSH with UFW

I had my server set up to accept SSH connections on port 21966, I followed some steps to configure ufw however it has now locked me out of all SSH access on any port! I've been able to boot my ...
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1answer
87 views

Automatically whitelist Postgrey for outbound email?

I have a mail server with Ubuntu Server 12.04, Postfix, Dovecot, and Postgrey, using MySQL (MariaDB) and managed through Postfix Admin. I am looking for a way to automatically add outbound email ...
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41 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 ...
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1k views

NameVirtualHost has no effect

What do you think would be solution to my problem? user@admin:~$ sudo service apache2 restart sudo: unable to resolve host admin * Restarting web server apache2 ...
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53 views

Ajax request not detected

I have installed the LAMP on ubuntu 12.04. But when any ajax request has made to server it does not detect. Where as on other PC its working fine. Is there are some setting to make it active? This ...
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1answer
122 views

Linux Server OS on LVM on Software RAID: Best Practices and Considerations

I am preparing for a minimal Ubuntu Server 12.04 LTS that will simply run libvirt/KVM to host a handful of Ubuntu Server 12.04 LTS guests. On my KVM host I created a RAID 1 comprised of two physical ...
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1answer
69 views

Daemon dies but upstart thinks it is still running

If the daemon process dies, I'm unable to restart it manually: start foo results in a message that "start: Job is already running: foo", and stop foo hangs indefinitely. start on runlevel [2345] stop ...
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58 views

KVM, Ubuntu 12.04, Cloudmin and port security

In my test environment I get everything working perfectly the way I want it. Running Cloudmin KVM instances over a bridged adapter. Then when it comes time to install at the data center I hit a brick ...
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1answer
59 views

OpenLDAP+Kerberos authentication – id (NSS) works, but authentication says user is unknown

I have a central authentication server with OpenLDAP set up and populated, and Kerberos 5, also populated. On an Ubuntu LTS machine, I set up nslcd and kerberos client stuff. This way, issuing the ...
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1answer
182 views

mysql wont start after update (seems an apparmor issue)

I just updated mysql-server to 5.5.35-0ubuntu0.12.04.1 and MySQL does not restart anymore. dmesg shows following errors: [ 832.490460] type=1400 audit(1392612759.575:31): apparmor="STATUS" ...
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452 views

Removing Unnecessary Services & Packages in a MySQL Ubuntu 12.04 Server [duplicate]

As part of hardening a standalone/dedicated MySQL 5.6 server running on Ubuntu 12.04 LTS, unnecessary services and packages will have to be removed. For a server that is serving only as a MySQL ...
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116 views

rsyslogd not monitoring all files in config file

I am not seeing rsyslog pick up all files I am trying to monitor. I am using the standard config from Ubuntu 12.04 LTS but am adding the contents below to /etc/rsyslog.d/30-logentries.conf. I ...
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347 views

I frequently get E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?

I'm looking after an Ubuntu 12.04 server behind a rather slow proxy. When attempting any kind of install with lots of dependencies, I frequently get stuck unable to install packages because the proxy ...
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1answer
138 views

How to Install RVM and RUBY to the specific user in the salt-minion

I am using Ubuntu 12.04 for salt-master and salt-minion.When i try to install a package in the salt-minion using salt, it installs only in the system specific. But i need to install in the user ...
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1answer
353 views

Apache VirtualHost setup… 502 Bad Gateway

I am trying to set up apache virtual hosts on Ubuntu 12.04 lts. I followed this guide here http://www.debian-administration.org/articles/412 except I used /var/www not /home/www. Ive set the document ...
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1answer
85 views

Hardly-used Ubuntu 12.04 server shows high CPU / Disc I/O every 8 hours

I have a basic cloud-based server that is only used here and there for testing. Since I installed New Relic (yesterday) it has reported high Disc I/O and high CPU problems (>90%) every 8 hours for a ...
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1answer
111 views

Using isc-dhcp-server to allocate addresses from subnet different from server subnet

I'm trying to break my network into different subnets. Server is located into 192.168.15.0/24 subnet. I have the following declaration in my dhcp.conf: subnet 192.168.15.0 netmask 255.255.255.0 ...
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1answer
63 views

Syn flood attack reported by Apache fill up my physical memory

This morning i've found a server (Ubuntu lts 12.04 on AWS EC2) under a syn flood attack, its physical memory was totally filled, so i've started checking why, but logs were quite normal, and a find ...
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34 views

FTP login via vsftpd

There seems to be quite a lot of posts about FTP login via vsftpd but none worked for me. I'm aware that FTP is not really secure but I have an uploader page which uses FTP to upload content to ...
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1answer
114 views

Error installing pure-ftpd

I'm getting a very weird error when installing pure-ftpd on my Ubuntu 12.04.04 LTS server. I'm running this command, with a sudo user. sudo apt-get install pure-ftpd and I get this error ...
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2answers
877 views

opening port 80 on Ubuntu AWS

I'm running a tomcat server on an ubuntu machine hosted in an AWS instance. I can reach the server via public_ip:8080 but when i change the listening port on server.xml from 8080 to 80 connection is ...
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1answer
265 views

Tuning Postgresql on a 16GB Linode VPS

I'm running a dedicated PostgreSQL on a 16GB Linode (Ubuntu 12.04 32bit). I've tried using pgtune, but I'll run into shared memory errors. I.e. The PostgreSQL server failed to start. Please check the ...
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2answers
62 views

Ubuntu IPV6 /48 routed over link-local

I have a Ubuntu 12.04 set up with with a /48 IPv6 routed to it. According to the hosts documentation it's an expert only option, described like this: For those customers, we will route the ...
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3answers
218 views

Locking down my Ubuntu server with UFW [duplicate]

I'm using Ubuntu 12.04 on an Amazon EC2 instance and new to the sysadmin side of things. I'm working on a little project of my own and I'm already starting to get targeted by bots (at least I hope ...
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140 views

How to set up reverse DNS on Ubuntu 12.04 VPS

As far as I can remember when setting up my VPS and mail server on it, I had configured the mail server correctly. However, a few of my clients get SMTP errors, host mx1.zonnet.nl[62.58.50.9] ...
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1answer
83 views

Difference between AWS Software Subscription and Launching a Custom AMI?

Amazon AWS seems to provide two methods of launching an instance of Ubuntu 12.04 that confuse me, one of them is the Software Marketplace the other method is by launching an AMI on the Ubuntu ...
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61 views

OpenVPN service delaying startup

I'm developing an embedded system based on ubuntu 12.04 that runs an OpenVPN client to connect to a central server. However, the system may not always have internet access when it is booted. The ...
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224 views

Confluence Proxy Error Reason : Error reading from remote server

Since this morning I have trouble accessing my confluence. It's on an Ubuntu 12.04 server. The error itself is this Proxy Error The proxy server received an invalid response from an upstream ...
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237 views

Ubuntu 12.04 LTS ntp not working

I'm having major woes trying to get ntp working on several ubuntu 12.04 servers. Note this is NTP to keep the time set on those servers. Not to distribute the time! I've installed several of those ...
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2answers
66 views

OpenVPN clients traffic [duplicate]

How can I see or even control a client cert traffic in OpenVPN? Is it possible? I'm programming a Client Control Web App and I find nothing about it. Is there any script or commands for that? In ...
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256 views

How should I run HPC Challenge benchmark on Ubuntu?

I've found a package on Ubuntu, http://packages.ubuntu.com/precise/hpcc. An older version of it reads as description: "The High Performance Computing (HPC) Challenge benchmark runs a suite of 7 ...
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147 views

How to limit client connection in OpenVPN?

How can I limit a client maximum connection in OpenVPN? What I really want is to restrict more than one device using one client account? How can I do that? Is it even possible? I've seen in OpenVPN ...
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1answer
235 views

NGINX 301 Redirect a URL with parameters to new URL

I've deployed a site live and trying to redirect some of the original URLs to the new URLs. I'm fairly new with NGINX configuration on redirects like this. This one works: location /contactus.aspx { ...
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1answer
147 views

Apache 2.4.7 install issue

I've just compiled and installed Apache 2.4.7 => /usr/local/apache2/ The issue I'm having is that the default version is used apachectl -v Apache/2.2.22 (Ubuntu) /usr/local/apache2/bin/apachectl -v ...
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1answer
68 views

How to access domains via IP using nginx? [closed]

I'm currently working on switching my webserver from Cent OS running Apache2 and Cpanel to Ubuntu 12.04 LTS running nginx without a GUI (unless I can find a good one). One thing I haven't been able ...
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22 views

Ubuntu not refreshing LDAP group membership

I have an Ubuntu 12.04 client configured to authenticate users against an OpenLDAP server using libpam-ldapd. I've successfully configured group mapping, but the user's group membership does not ...
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1answer
160 views

Unable to automatically remove LVM data

I am trying to install ubuntu 12.04 via preceed config onto Dell PowerEdge R710. I had RedHat installed on the box then I tried installing ubuntu 12.04, then auto install popping with Unable to ...
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2answers
178 views

Tomcat logging and mod_proxy

I have Tomcat running on port 8080, and when I send a request directly to Tomcat it works fine: curl -IL http://localhost:8080/myapp HTTP/1.1 302 Moved Temporarily Server: Apache-Coyote/1.1 ...
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1answer
39 views

How to set up virtualhosts on Ubuntu dev machine in arbitrary directories, with write permissions for Apache and me?

I am on my XUbuntu 12.04 development machine, and I have installed the LAMP stack using tasksel install lamp-server. I've been trying to set up virtualhosts in my personal projects directories, ...
2
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1answer
153 views

Azure Linux VM Captured, Built from image. Different password or key for new VM: permission denied?

I followed How to Capture an Image of a Virtual Machine Running Linux to capture a VM image, after installing the packages I wanted on top of Ubuntu 12.04 LTS. I turned off the machine following a ...
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60 views

Bridging Adapter in Ubuntu 12.04 LTS for KVM

Fresh install of Ubuntu 12.04 LTS with libvert/KVM installed. I have 2 virtual machines that I need need to be on the same LAN as the host. The host has two physical interfaces eth0 and eth1. eth1 is ...
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1answer
85 views

Securing PHP on Ubuntu 12.04 LTS?

I recently set up an Ubuntu 12.04 server (with Apache 2.2 & PHP 5.3.10). While I was testing it, I noticed in the Apache access logs that an unknown IP address was trying to perform a PHP CGI ...
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1answer
224 views

Using GitLab, projects are missing from the API list

I use the GitLab API to fetch a list of the projects I have access to (URL /api/v3/projects/all?private_token=xxx), but there are 6-7 projects that are not included in the list for some reason. EDIT: ...
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80 views

Ubuntu 12.04 reply ARP request delay 10+ seconds

I'm running Ubuntu 12.04 in VirtualBox, my server program is running in it, its IP is 192.168.1.105. My client is running at 192.168.1.107. But the client alway took 10+ seconds to send a package to ...
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1answer
100 views

Trying to create an ElementaryOS PV guest on Xen

I am trying to install ElementaryOS as a pv guest on my server for testing purposes. Elementary OS is a fork of Ubuntu Precise. Elementary does not come with PV support, however, I can obtain the ...
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0answers
172 views

Apache 2.2 fails with “unable to write 'random state'” with 2048-bit RSA key (1024-bit works fine)

I'm usually pretty good with Apache and OpenSSL, but this one has me completely baffled. I'm running Apache 2.2.22 and OpenSSL 1.0.1 on a Ubuntu 12.04 LTS Server. I have an IP-based virtual host ...
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78 views

hald (HAL daemon) behavior analysis

We were looking at the behavior of HAL daemon on a Linux host (Ubuntu 12.04.2 LTS 64-bit). We looked at both its syslog and system calls (using strace). According to the documentation, HAL daemon ...
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66 views

EC2 - editing .bashrc causes terminal to hang and checks to fail

I've been testing this for the past few hours with no luck. When launching an Ubuntu 12.04 EC2 micro instance, I SSH to it, create a new user and continue with installing Ruby version manger under ...
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3answers
183 views

Virtualbox forward specific ip to guest

I have a dedicated server with Ubuntu 13.10 installed and a basic installation with Virtualbox and phpvirtualbox to manage the guest OSs on it. I have two IP addresses pointing to the server and I ...
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1answer
103 views

5.7.1 relay access denied when accessing from vb.net application

I am developing a program in vb.net which needs to connect directly with my mailserver (postfix) to send emails which will be directed towards email to sms transmissions. My mailserver is otherwise ...