[hemmerling] Development and Operations ( DevOps ) 1/2

Statements

”Maven + Jenkins + a good script shell and/or script language ( Bash, Windows PowerShell, Tcl/Tk, Python..) as collection are good enought to practice DevOps, successfully .

anotheria.
- The OpenSource MoSKito for Java application - “A multi-purpose, non-invasive, interval based monitoring system kit for collection, storage and instant analysis of application’s performance and behavior data”.
- Blog anotheria devblog.
Probe for Java applications.
- Lambda Probe for Apache Tomcat.
- The OpenSource Google Code "psi-probe. Advanced manager and monitor for Apache Tomcat, forked from Lambda Probe".

Gihub "Netflix / Simian Army" - “Consists of services (Monkeys) in the cloud for generating various kinds of failures, or detect abnormal conditions, and test our ability to survive them”.
- Github "Netflix / Simian Army / Chaos Monkey" - “A service which identifies groups of systems and randomly terminates one of the systems in a group”.
Coding Horror "Working with the Chaos Monkey", 2011-04-25.

Just execute Bash scripts on Linux, or PowerShell scripts for Windows to configure your servers.

The OpenSource Ansible, written in Python.
- Ansible Galaxy - “Find, reuse, and share the best Ansible content”.
- The online service Ansible Tower - “Manage up to 10 servers/instances for free!”.
- Ansible Documentation.
  - Ansible Documentation "Python API".
- GitHub "ansible" - “A radically simple IT automation platform that makes your applications and systems easier to deploy. Avoid writing scripts or custom code to deploy and update your applications— automate in a language that approaches plain English, using SSH, with no agents to install on remote systems”.
- The Python Package Index "ansible".
Ansible uses YAML for communications. So the communications is declarative. So you have to write YAML data.
Ansible doesn't require a client on the target systems.
I was told by experts in 2015 “Ansible and Docker are a strong combination”, supposing that the reputation, importance and success of Ansible will rise with the expected glorious success of Docker.
EN.Wikipedia "Ansible (software)", DE.Wikipedia "Ansible".

The OpenSource CFEngine - The “mother” of all modern IT configuration management software, “puppet and “chef” are the next generation.
- EN.Wikipedia "CFEngine", DE.Wikipedia "CFEngine".

The OpenSource Chef - “Systems integration framework, built to bring the benefits of configuration management to your entire infrastructure”.
Chef "Supermarket" - “Find, explore and view Chef cookbooks for all of your ops needs”.
Berkshelf, GitHub "berkshelf" - “A Chef Cookbook manager”, “Berkshelf is now included as part of the Chef-DK”.
IBM uses “Chef” for the installation of the IT configuration management software “IBM The Cloud Manager with Openstack” ( CMwO ).
- IBM Knowledge Center "IBM Cloud Manager with OpenStack welcome page" - “IBM Cloud Manager with OpenStack V4.1.0 documentation”.
Chef uses the Ruby language for communications. So the communications is imperative. So you have to write Ruby code.
Chef requires a Chef client on the target systems.
Chef parses its documents 2 times ( it reads the Chef source files 2 times ):
1. Parsing of the Ruby script.
2. Execution of special “blocks”.
Chef offers BDD / TDD alike test options!
EN.Wikipedia "Chef (software)".

The OpenSource “Puppet”.
- Puppet Labs - IT Automation Software for System Administrators.
  - Puppet Forge - “A repository of modules”.
  - Blog Puppet Labs Blog.
  - Facebook "Puppet Labs".
  - Twitter "Puppet Labs".
  - Puppet Labs "Puppet Enterprise".
  - Hewlett-Packard uses “Puppet” for IT infrastructure management.
- Puppet Labs “Hiera”.
  - Puppet Labs "Hiera 1: Overview — Documentation".
  - Puppet Labs Projects "Hiera".
Puppet uses JSON for communications. So the communications is imperative. So you have to write JSON data.
Puppet requires a Puppet client on the target systems.
EN.Wikipedia "Puppet Labs".
EN.Wikipedia "Puppet (software)",DE.Wikipedia "Puppet (Software)".

The OpenSource SaltStack, written in Python.
- Github "saltstack".
- EN.Wikipedia "Salt (software)".
- SALT may be used with Vagrant ( see Virtual PCs, Virtual Servers, Virtualization, Virtual Computers, Computer Hardware Simulation ) for provisioning a “project” filespace on a virtual project computer and the transportation of data. In opposite, SALT is used for preparation of the development system ( IDE, compilerchain,... ) on the host development workstation, not on the virtual project computer.
- Both SALT and later the IDE on the host development workstation have access to a mapped filesytem on the virtual project computer.