Cloud-init doesn’t work with predictable network names … So In favor of cloud-init automated network set up disable them. In: /etc/default/grub Change to: GRUB_CMDLINE_LINUX=”net.ifnames=0 biosdevname=0″ source
Tag: ubuntu
How to install MacOS Sierra guest on VirtualBox on Ubuntu host
Well, yeah, I was desperate to debug an app on mac OS so … You can have it run on Ubuntu host with VirtualBox. It works on other versions of Ubuntu and VirtualBox. Haven’t tested mac OS Mojave. If you try it, drop a line on the comments below to share with other desperate developers/sysadmins. […]
Setup central syslog server on raspberry pi 2 (and other debian based distros)
Central log server using rsyslog is an asset of your sysadmin life! It may get you on the surface on really critical failures when you manage xyz number of servers and some of them go down. In my case raspberry pi 2 with rasbian (debian wheezy for arm processors) does the job very well, without […]
Delete your personal info from your photos with Exif tool
When you create an image, take a screenshot, take a picture with your smartphone or your computer etc, that picture is tagged with some metadata which can be used to track your location or your identity. In which file types are these metadata applied? Image files (scanned documents too), audio files. What info are embeded in photos? […]
Linux home directory encryption
Encrypting the $HOME directory under ubuntu/debian and other dists. In my case my $USER is “ubuntu” so be careful to replace that with your own user. Be sure to have more than the double free space in your $HOME than the size of the files to complete the migration, else copy your files temporarily in […]
Cacti installation for monitoring servers and routers
This is done with Ubuntu 12.04 Precise, but, it may be done with othe distros too. First install the required packages:
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sudo apt-get install snmp snmpd apache2 mysql-server mysql-client rrdtool |
Go to /var/www/ download cacti, unpack it and rename it:
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cd /var/www/ && sudo wget http://www.cacti.net/downloads/cacti-0.8.8a.tar.gz && sudo tar zxvf cacti-0.8.8a.tar.gz && sudo mv cacti-0.8.8a cacti |
Create a database for cacti, a user for the database and insert the cacti tables in it:
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mysqladmin -u root -p create cactidb |
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mysql -u root -p -e "GRANT ALL ON cactidb.* TO 'cacti-admin'@'localhost' IDENTIFIED BY 'yourpassword';" |
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mysql -u root -p cactidb < /var/www/cacti/cacti.sql |
Edit […]
Move Window Buttons Back to the Right in Ubuntu 10.04 / 10.10
One of the more controversial changes in the Ubuntu 10.04 beta is the Mac OS-inspired change to have window buttons on the left side. We’ll show you how to move the buttons back to the right.
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<strong>Before</strong> While the change may or may not persist through to the April 29 release of Ubuntu 10.04, in the beta version the maximize, minimize, and close buttons appear in the top left of a window. |
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<strong>How to move the window buttons</strong>The window button locations are dictated by a configuration file. We'll use the graphical program gconf-editor to change this configuration file. Press Alt F2 to bring up the Run Application dialog box, enter <em>gconf-editor</em>in the text field, and click on Run. The Configuration Editor should pop up. |
The key that we want to edit is in apps/metacity/general. Click on the button next to the […]
HowTo update to lastest Firefox via PPA on Ubuntu Linux
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This is tutorial about installing or updating <a href="http://www.mozilla.org/en-US/firefox/fx/">firefox</a> via mozilla firefox repository on <a href="http://en.wikipedia.org/wiki/Ubuntu_(operating_system)">Ubuntu</a>. 1. First you must add via terminal (Ctrl-Alt-T) the repository of mozilla firefox with the stable versions. [crayon-5d5cbbc9bd91a591197404 lang="bash" ]$ sudo add-apt-repository ppa:mozillateam/firefox-stable |
2. update your packages
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$ sudo apt-get update |
3. finally, an upgrade and you’re done!
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$ sudo apt-get install firefox |
Enjoy your new, stable, firefox! Best Regards, Specktator.[/crayon]
HowTo – Set up Deluge torrent server (aka seedbox) headless with Ubuntu
Deluge is a bit torrent protocol client, designed in client server model and has the ability to run in multiple and various interfaces. Client, web interface and console. So lets’s say you have an ubuntu server installed somewhere or an ubuntu desktop which you want to load, with all the damn work of downloading huge […]
Linux Server Monitoring – Schedule a Command Output to be Sent via Email on Boot
Scheduling a command on boot it’s easy and it can be done with different ways. One, with cronjobs and second, with the rc.local file (/etc/rc.local). Third, by putting your own script in /etc/init.d/. Fow now I’ll take the easy way to do it, the one with the rc.local. Requirements: sSMTP Mutt email client Implementation Open […]