Tech Talk - Vagrant

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Entwicklungsteams stehen heutzutage unter enormen Zeitdruck, da gilt: "In the new world, it is not the big fish which eats the small fish, it’s the fast fish which eats the slow fish" (Klaus Schwab, Founder and Executive Chairman of the World Economic Forum). Weiterhin muss Software gegen Testsysteme entwickelt und getestet werden, die soweit wie möglich an Produktionssysteme angelehnt sind, um Aussagen wie "Runs on my machine" endgültig abzuwürgen. Aufgrund des Zeitdrucks müssen diese Testsysteme sehr schnell aufgesetzt und auch wieder zerstört werden können. Vagrant versucht diese Probleme zu lösen, indem es vorhandene Virtualisierungs- und Provisionierungs-Tools orchestriert und damit Entwicklern die Möglichkeit bietet Testsysteme lokal und in "self-service" zu verwalten. Dieser TechTalk soll Entwicklern eine Einführung in die Konzepte und Benutzung von Vagrant geben.

Software

“Vagrant is a tool for building complete development
environments. [...] Vagrant lowers development
environment setup time [...] and makes the "works
on my machine" excuse a relic of the past.”
Was ist Vagrant?
Quelle: https://www.vagrantup.com/about.html

Orchestrations-Tool für VMs
Provider: VirtualBox, VMware, AWS, libvirt, Docker …
Provisioner: Shell Scripts, Puppet, Ansible, Docker …
Ruby
Plugins
Was ist Vagrant?

2010 von Mitchell Hashimoto
Gründung von HashiCorp 2012
Open Source, MIT License
Linux, Mac OS X, Windows
Was ist Vagrant?

“development environments”
Was ist Vagrant?

isoliert
reproduzierbar
konsistent
Einweg-VMs
Einheitlicher Workflow
Einfache Installation
Warum Vagrant?

Vagrantfile: “Saat” für VMs
Ruby-DSL
data-as-code
ähnlich Dockerfile
Vagrantfile

$ vagrant init ubuntu/trusty64
$ vagrant up
$ vagrant ssh
$ vagrant destroy
Vagrant.configure(2) do |config|
config.vm.box = 'ubuntu/trusty64'
end
Vagrantfile

fertige Templates für VMs
Versioniert, Gebunden an Provider
Standard-Quelle: HashiCorps Atlas box catalog
Selber machen: Packer
Beliebige weitere Quellen (Lokal, Web, ...)
Vagrantfile - Boxes

Technische Einstellungen der VM
Speicher, CPUs, …
Provider spezifische Einstellungen
Vagrant.configure(2) do |config|
...
config.vm.provider :virtualbox do |vb|
vb.memory = 1024
vb.cpus = 2
vb.gui = true
end
...
end
Vagrantfile - Provider Settings

Dateien mit Host teilen
Standard: Projektverzeichnis unter /vagrant
verschiedene Typen: VirtualBox, NFS, RSync, SMB
Vagrant.configure(2) do |config|
...
config.vm.synced_folder 'target/', '/media/wars'
config.vm.synced_folder '.', '/vagrant', :disabled => true
...
end
Vagrantfile - Synced Folders

reproduzierbares Aufsetzen
Mit dabei: Datei kopieren, Shell-Skript, Puppet,
Ansible, Docker, Chef, Salt, CFEngine
Weitere über Plugins
Vagrantfile - Provisioners

Datei kopieren
Vagrant.configure(2) do |config|
...
config.vm.provision :file, :source => 'my_file',
:destination => '/tmp/my_file'
...
end
Vagrantfile - File Provisioner

Shell-Skript ausführen
Vagrant.configure(2) do |config|
...
config.vm.provision :shell,
:path => 'bootstrap.sh'
config.vm.provision :shell,
:inline => 'apt-get install tomcat7'
...
end
Vagrantfile - Shell Provisioner

Puppet-Run starten ohne Master
Vagrant.configure(2) do |config|
...
config.vm.provision :puppet do |puppet|
puppet.manifests_path = 'puppet/manifests'
puppet.module_path = 'puppet/modules'
puppet.options = '--test'
end
...
end
Vagrantfile - Puppet Provisioner (apply)

Management Interface + NAT
Port Forwarding, Private Network, Bridge
DHCP oder Static IP
MAC-Adressen
Mehrere Netzwerke möglich
Vagrantfile - Network

Port Forwarding
Vagrant.configure(2) do |config|
...
config.vm.network :forwarded_port,
:guest => 5432, :host => 5432
config.vm.network :forwarded_port,
:guest => 8080, :host => 8080
...
end
Vagrantfile - Network

Private Network
Vagrant.configure(2) do |config|
...
config.vm.network :private_network, :type => 'dhcp'
config.vm.network :private_network, :ip => '192.168.20.2'
...
end
Vagrantfile - Network

Bridge
Vagrant.configure(2) do |config|
...
config.vm.network :public_network, :bridge => 'eth0',
:ip => '192.168.1.2'
...
end
Vagrantfile - Network

Installation von Docker
docker run
docker pull
docker build
Docker Provisioner

docker run
Vagrant.configure(2) do |config|
...
config.vm.provision :docker do |docker|
docker.run 'osiam',
:image => 'osiamorg/osiam:1.3.2',
:args => '-v /vagrant:/media/vagrant
-p 8080:8080
-p 5432:5432'
end
...
end
Docker Provisioner

Standby: vagrant suspend
Poweroff: vagrant halt
Zerstören: vagrant destroy
VM Beenden

Sicherheit von Vagrant
==
Sicherheit von Provider
aber ...
Security

Vertrauen in Box
Selber machen: Packer
Wie bei Docker Hub, Maven Central, …
Security

vagrant user == root
Passwortloses sudo
Passwort: vagrant
root-Passwort: vagrant
Aber: frische, einzigartige SSH-Keys
Das ist gewollt!
Security

Externe Konfiguration
Multi VM Environments
Ausnutzen von Ruby
Zusätzlicher Storage
-> Lightning Talk am 4. Mai 2015
Advanced Vagrant

• https://www.vagrantup.com/
• https://docs.vagrantup.com/
• Vagrant: Up and Running (O'Reilly Media)
http://shop.oreilly.com/product/0636920026358.do
• Beispiele zum Talk
https://github.com/tkrille/tech-talk-vagrant
Links

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We specialize in Psychic Readings, Psychic Love Spells, Binding Love Spells, Obsession Spells, Voodoo Spells, Lottery Spells, Marriage Spells, Black Magic Spells, Palm Readings & much more. Are you depressed? We perform this come-to-me love spell that works instantly with the aim of bringing back the victim to the person performing the magic. Have you lost your lover? We perform this come-to-me love spell that works instantly with the aim of bringing back the victim to the person performing the magic. Have you lost your lover? Do u need to solve any relationship problem? Contact the powerful spells caster chief kule with love spells that work overnight and love spells that really work. Have you found yourself infatuated with a special someone you think could be the one? Are you looking for a spell to provide them with a nudge in the right direction? Or maybe the spell you cast didn’t achieve the results you were hoping for? Whether you’re new or versed in the ways of spell casting, we’re here to help. Today we’re going to provide you with a detailed guide on the types of love spells to cast. Not only that but there’s something for those who wish to find outside advice from more advanced spell casters. We’re also going to provide you with the top sites available to help you with your dilemma. Let’s begin our journey by educating ourselves on love magic and what a real love caster looks like. Love Magic and Love Casters Love magic made its first appearance back in Ancient Egypt and has been an active practice since. This type of magic is a branch of traditional magic and can be practiced in various ways. Typically the more common use of love magic is through the work of spells, but other methods look like Charms Rituals-LOVE Potions-Dolls and even Amulets If you are interested in becoming a love caster, be prepared for what’s to come. A genuine love caster knows that the art of love casting is no easy feat and shouldn’t be done casually. You should know that not only does it require you to be gifted spiritually, but you must be ready to serve others. Someone who is considered a real love caster has experience in all manner of spells, no matter the difficulty. Training yourself in attraction, commitment, and marriage spells is an excellent place to start. But this by no means will make you a professional. Practice your craft and expand your knowledge; understand that you will possess the ability to help others in time truly. Types of Love Spells What better way to start broadening your experiences with love spells than by learning more about them? These spells work like just about any other spell. Simply apply your intention, use a medium (sigils, mantras, candles, or charm bags), and top it off with establishing the belief that you will receive what you want. So what kind of spells are available and which ones suit your needs the best? Let’s take a look at the many options you have at your disposal. Attraction Spells

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Modeling languages are generally applied for developing systems and software – both internally, with domain-specific languages, and with standardized languages targeting a general purpose and a wide audience. Way too often these languages are weakly created and defined leading to poor quality: Language definitions tend to contain errors and inconsistencies; notations do not recognize the communication and problem-solving needs of humans; standardization organizations push exchange formats that do not fully work and offer certificates that do not measure mastery of the language. We describe common problems in language development and point them out with examples from known cases. To overcome these problems, we suggest several solutions to improve language development, including using modeling languages specifically designed to define modeling languages, continuous testing and prototyping, and keeping language users in the loop.

What Goes Wrong with Language Definitions and How to Improve the Situation

Juha-Pekka Tolvanen

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OpenChain - The Ramifications of ISO/IEC 5230 and ISO/IEC 18974 for Legal Pro...

Shane Coughlan

WSO2CON 2024 - WSO2's Digital Transformation Journey with Choreo: A Platforml...

WSO2

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This presentation covers the following topics: What is logging? The purpose of logging: Debugging The purpose of logging: Security The purpose of logging: Stats & analytics Traditional logging Traditional logging: Advantages Traditional logging: Disadvantages The solution: Large-scale logging Large-scale logging: Core principles Large-scale logging: Solution types Large-scale logging: Cloud vs on-prem Large-scale logging: Operational complexity Large-scale logging: Security Large-scale logging: Costs Large-scale logging: On-prem comparison - Elasticsearch - Grafana Loki - VictoriaLogs On-prem comparison: Setup and operation On-prem comparison: Costs On-prem comparison: Full-text search support On-prem comparison: How to efficiently query 100TB of logs? On-prem comparison: Integration with CLI tools VictoriaLogs for large-scale logging VictoriaLogs demo instance - Ingestion rate: 3600 messages / minute - The number of log messages: 1.1 billion - Uncompressed log messages’ size: 1.5TB - Compressed log messages’ size: 23GB - Compression ratio: 47x - Memory usage: 150MB VictoriaLogs CLI integration demo - Which errors have occurred in all the apps during the last hour? - How many errors have occurred during the last hour? - Which apps generated the most of errors during the last hour? - The number of per-minute errors for the last 10 minutes - Status codes for the last hour - Non-200 status codes for the last week - Top client IPs for the last 4 weeks with 404 and 500 response status codes - Per-month stats for the given IP across all the logs Large-scale logging solution MUST provide excellent CLI integration VictoriaLogs: (temporary) drawbacks VictoriaLogs: Recap - Easy to setup and operate - The lowest RAM usage and disk space usage (up to 30x less than Elasticsearch and Grafana Loki) - Fast full-text search - Excellent integration with traditional command-line tools for log analysis - Accepts logs from popular log shippers (Filebeat, Fluentbit, Logstash, Vector, Promtail, Grafana Agent) - Open source and free to use!

Large-scale Logging Made Easy: Meetup at Deutsche Bank 2024

VictoriaMetrics

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