200 Lines of Code Saves 20 000 EUR

My student Joram Puumala wrote a program to automatically configure routers. The CEO of NDC Networks, Markus Ahonen: “NDC is expecting to deliver over 5000 routers during 2018, so the calculable savings in direct effort are significant. Especially as handling … Continue reading

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Configuration Management Course Awards 2017: Most slaves: Tommi, most OSes: Matias

Tommi Timonen had the most slaves, a total of 1478 computers. He had 20 physical computers running many virtual computers each. Congratulations Tommi! Tommi also took second place with his previous setup of 639 computers. Third place was Tatu Erkinjuntti … Continue reading

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Top Configuration Management Systems – Puppet vs Salt vs Ansible vs Chef

The leading configuration management systems compared: Puppet, Chef, Ansible, Salt. My students Joona, Jori, Eero and Jarkko gave a presentation and demonstrated each system. ArcticCM provisioned and configured a couple of Linux desktops and servers, and also configured some Windows … Continue reading

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Multiple Virtual Computers in Minutes – Vagrant Multimachine

You can install multiple virtual computers in minutes. This example shows how to install two Ubuntu 16.04 virtual machines and configure SSH – in a couple minutes.

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Aikataulu – Linuxin keskitetty hallinta – 3 op, vanha OPS – loppusyksy 2017 p5 – Puppet

Control 10 computers. Or 100. Or 1000. Use Puppet, the tool used by US Gov (security baseline), Mozilla, Google (laptops and desktops) and Wikipedia. Just write what you want (idempotency). Control almost everything with one system (single source of truth). … Continue reading

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Apply Puppet Resources Top Down – ordering=manifest – Order without Require

By default Puppet manifest ordering is arbitrary. You either have to use require a lot or apply your modules twice. But there is an easy fix: $ sudoedit /etc/puppet.conf [main] ordering = manifest # …

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Aikataulu – Palvelinten hallinta ict4tn022-3 – 5 op, uusi OPS – loppusyksy 2017 p5

Control 10 computers. Or 100. Or 1000. Use Puppet, the tool used by US Gov (security baseline), Mozilla, Google (laptops and desktops) and Wikipedia. Just write what you want (idempotency). Control almost everything with one system (single source of truth). … Continue reading

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Teaching Puppet Configuration Management in The National Library of Finland

I’m very happy to get a change to talk about Puppet in the National Library of Finland. Working with experienced professionals makes an interesting day. I have used their Finto ontology to create one of the largest free Finnish-English dictonaries … Continue reading

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Firefox System Wide Settings – /etc/firefox/syspref.js

Firefox preferences for all users are in /etc/firefox/syspref.js. You can copy settings from your current user preferences.

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Aikataulu – Linuxin keskitetty hallinta – ict4tn011-9 – loppukevät 2016

Hallitse palvelimiasi ja työasemiasi Pupetilla. Kuvaile tavoitetila, ja anna Pupetin tehdä tarvittavat säädöt ja asetukset. Pupettia käyttävät mm. Google, Mozilla ja Wikipedia. USA:n valtio suojaa Windows- ja Linux-työasemansa Pupetilla (US Government Security Baseline).

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Preseed MySQL Server Password with Salt Stack

MySQL is the most popular multi-user database in the world. When you install MySQL Server automatically, you must set database root password without asking user to type it. On Debian and Ubuntu, you can use Preseed to answer installer (apt-get) … Continue reading

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Free SSL Certs, 50 Salt Slaves, 5 USD Raspberry Pi, Free Home Automation

Get free SSL cert for your business. Deploy and configure 50 servers to DigitalOcean. Buy RaspBerry Pi Zero for 5 USD (*actual price may vary). Automate your home. Read Ashkan’s thesis while he writes it.

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Salt Master-Minion with Ubuntu 14.04 LTS – Control Your Slaves over the Internet

Would you like to control many computers (slaves, minions) from one master computer? Salt-minions connect to master to retrieve instructions. Slaves then configure themselves to the target state: they install software, make settings and start daemons.

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Implementing Package-File-Service Pattern as a Salt Stack PyObjects Function

PyObjects renderer allows you to use normal Python functions to repeat actions. In this article, we’ll implement a Package-File-Service pattern as a reusable Python function.

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Salt Package-File-Service with Pyobjects

When you install Apache, the most popular web server in the world, you want to show web pages. In practice, you install the package, keep the service running and modify a configuration file. In configuration management, this is called package-file-service … Continue reading

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Install the Latest Salt Stack on Ubuntu 14.04 LTS

Salt Stack is a configuration management system. It allows you to control a big number of computers easily. To get the latest features, you can install the latest stable Salt Stack on Ubuntu 14.04 LTS.

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Aikataulu – Linuxin keskitetty hallinta – ict4tn011-8 syksyllä 2015

Hallitse palvelimiasi ja työasemiasi automaattisesti.

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Aikataulu – Linuxin keskitetty hallinta – ict4tn011-4 syksyllä 2013

Hallitse palvelimiasi ja työasemiasi Pupetilla. Pupettia käyttävät mm. Google, Mozilla ja Wikipedia.

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Hello Puppet revisited – on Ubuntu 12.04 LTS

Learn “Hello Puppet World” in 5 minutes. Write one-liners & modules. Meet the configuration management system used by Google and Wikipedia.

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Aikataulu – Linuxin keskitetty hallinta – ict4tn011-3 keväällä 2013

Hallitse palvelimiasi ja työasemiasi Pupetilla. Pupettia käyttävät mm. Google, Mozilla ja Wikipedia.

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Aikataulu – Linuxin keskitetty hallinta – ict4tn011-2 syksyllä 2012

Hallitse palvelimiasi ja työasemiasi Pupetilla. Pupettia käyttävät mm. Google, Mozilla ja Wikipedia. Kiitos suosiosta! Kurssille mahtuu 25 opiskelijaa, mutta ilmoittautuneita on jo 41. Jos et mahdu mukaan, ilmoittaudu seuraavalle toteutukselle ict4tn011-3 Winhassa jo samana iltana. Opettaja: Tero Karvinen. Paikka: h5001, … Continue reading

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Hello Puppet – on Ubuntu 12.04 LTS

Read new, revisited version of Hello Puppet World. Now with one-liner & module! Old version below. >> Move to new version >>>

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PuppetMaster on Ubuntu 12.04

Control a whole network of computers from PuppetMaster. Wikipedia uses puppet for servers, Google uses puppet for OSX laptops. With this article, you can use puppet with Ubuntu servers and desktops. Prequisites To follow this article, you should be fluent … Continue reading

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Puppet Reading List

*Starting documents are marked with asterisk “*” and bold. Getting Started with Puppet Hello Puppet – on Ubuntu 12.04 LTS* Learning Puppet Master and Slave PuppetMaster on Ubuntu 12.04* Modules Learning Puppet: Modules and Classes (Part One) Learning Puppet: Parameterized … Continue reading

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Aikataulu – Linuxin keskitetty hallinta – ict4tn011-1

Hallitse palvelimiasi ja työasemiasi. Tutustu samoihin työkaluihin, joilla Wikipedian Linux-palvelimet ja Googlen työntekijöiden Mac OSX -läppärit hallitaan. Opettaja: Tero Karvinen. Paikka: h5001, Haaga-Helia Pasila, Helsinki. Aika: 2p, 2012 loppukevät w13-w19, torstaisin aamulla 08:15 – 12:00. Linuxin keskitetty hallinta 1 Moodlessa … Continue reading

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