PaaSVSContainerization
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first explains what paas is and then execute helloworld in cloudfoundry which is a vmware paas solution then explain what containerization is the what docker is and how to execute hell world in a docker container
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PaaSVSContainerization
- 1. Paas and Containirization in agile software development Presented by: Seyyed Ehsan Beheshtian Evoteam.ir 1
- 2. List of Content • What is PaaS? • PaaS Technologies • PaaS Example – Cloudfoundry • Simple Hello World in Cloudfoundry • What is Containerization? • Container VS VMs • Containerization Example – Docker • Simple Hello World in Docker • PaaS & Containerization • What is PaaS and containerization roll in agile? Evoteam.ir 2
- 3. PaaS , What is it? • Platform as a service (PaaS) is a cloud computing offering that provides users a cloud environment in which they can develop, manage, and deliver applications. Private PaaS Public PaaS Evoteam.ir 3
- 4. Key Features • Facilitates collaborative work even if teams work remotely. • PaaS provides a platform with tools to test, develop, and host applications in the same environment. • Enables organizations to focus on development without having to worry about underlying infrastructure • Providers manage security, operating systems, server software, and backups. Evoteam.ir 4
- 6. Some PaaS Techs Compared Strato s Google App Engine Amazon Beanstalk Heroku CloudBees RUN@Cloud Red Hat OpenShift VMWare CloudFoundry Cloud Characteristics 5 7 3 3 3 3 3 Cloud Dimensions 7 3 3 3 3 3 7 Production Ready 5 5 5 0 3 0 0 DevOps activities and phases 5 2 2 2 7 5 5 Cloud Architecture 5 7 3 3 3 3 3 Platform Services 10 4 4 2 2 2 2 Programming Model 2 5 1 1 1 1 1 Evoteam.ir 6
- 7. Some PaaS Techs Compared Evoteam.ir 7
- 8. What is cloud foundry? • Cloud Foundry is an open source, multi cloud application platform as a service (PaaS) governed by the Cloud Foundry Foundation. • The software was originally developed by VMware and then transferred to Pivotal Software, a joint venture by EMC, VMware and General Electric. Evoteam.ir 8
- 9. Simple hello world • Pivotal web services (PWS) provides “Cloud Foundry as a web service,” deployed on top of AWS. You’ll just need create an account and you’ll automatically get a sixty day free trial. Cloud Foundry supports many languages like Java, PHP, Ruby, Node.js etc. In this example we will run Java hello world program in Pivotal Web Service. Evoteam.ir 9
- 10. Step 1: Register with Pivotal Web Service • Register with Pivotal Web Service. Create your account and finally you should be able to see your Pivotal account as below. Evoteam.ir 10
- 11. Step 2: Install the Cloud Foundry Command Line Interface (cf CLI) • Cloud Foundry Command Line Interface (cf CLI) is a tool to deploy and manage applications in Cloud Foundry. 1. Download and install Cloud Foundry Cli 2. Add the Cloud Foundry path to environment variable. 3. Open Command Prompt and run “cf help” to confirm that the tool is installed correctly. The example shows the beginning lines of output for this command. Evoteam.ir 11
- 12. Step 3: Download and deploy Java Hello World Application in Cloud Foundry 1. Download the Java Hello World program. 2. Enter command “cf api api.run.pivotal.io” to set the API endpoint. 3. Enter “cf login” to login. Enter your email id and password you used while registering to Pivotal Web Service. 4. Open Command Prompt and enter the command “CD <CF_FOLDER_PATH>”. 5. Enter the command “cf push” to publish the Hello World application. 6. Finally the application should be started and the app URL should be provided as below. For example in this case, it is Java- HelloWorld.cfapps.io Evoteam.ir 12
- 13. Enter command “cf api api.run.pivotal.io” to set the API endpoint. Evoteam.ir 13
- 14. Enter “cf login” to login. Enter your email id and password you used while registering to Pivotal Web Service. Evoteam.ir 14
- 15. Open Command Prompt and enter the command “CD <CF_FOLDER_PATH>”. Evoteam.ir 15
- 16. Enter the command “cf push” to publish the Hello World application. Evoteam.ir 16
- 17. Finally the application should be started and the app URL should be provided Evoteam.ir 17
- 19. Deploying App to Cloud Foundry Runtime ① Upload app bits and metadata push app ② Create and bind services ③ Stage application ④ Deploy application ⑤ Manage application health … Cloud Foundry Run.me (PaaS) Blobstore DB Cloud Controller Service Broker Node(s) DEA DEA DEA DEA MD+ ap p + = Service credentials MDapp Evoteam.ir 19
- 20. Creating and Binding a Service Cloud Foundry Run.me (PaaS ) DB Service credentials reserve resourcescreate service (HTTP) create service (HTTP) bind service (HTTP)bind service (HTTP) obtain connection data CLI Cloud Controller Service Broker Data Service Evoteam.ir 20
- 23. Monitoring and Replacing an Application Evoteam.ir 23
- 24. Cloud Foundry Architecture • The Cloud Foundry platform is abstracted as a set of large-scale distributed services. It uses Cloud Foundry Bosh to operate the underlying infrastructure from IaaS providers (e.g., VMware, Amazon AWS, OpenStack). • Components are dynamically discoverable and loosely coupled, exposing health through HTTP endpoints so agents can collect state information (app state & system state) and act on it. Evoteam.ir 24
- 25. Containerization, What’s it about? • A container image is a lightweight, stand-alone, executable package of a piece of software that includes everything needed to run it: code, runtime, system tools, system libraries, settings. Available for both Linux and Windows based apps, containerized software will always run the same, regardless of the environment. Containers isolate software from its surroundings, for example differences between development and staging environments and help reduce conflicts between teams running different software on the same infrastructure. Evoteam.ir 25
- 26. Container Vs VMs • Containers and virtual machines have similar resource isolation and allocation benefits, but function differently because containers virtualize the operating system instead of hardware. Containers are more portable and efficient. Evoteam.ir 26
- 27. Container Vs VMs • Faster to boot, less overhead than a VM $ time docker run ubuntu echo hello world hello world real 0m0.258s • Disk usage: less than 100 kB • Memory usage: less than 1.5 MB Evoteam.ir 27
- 31. Docker • Docker is an open platform for developing, shipping, and running applications. Docker is designed to deliver your applications faster. With Docker you can separate your applications from your infrastructure AND treat your infrastructure like a managed application. Docker helps you ship code faster, test faster, deploy faster, and shorten the cycle between writing code and running code. Evoteam.ir 31
- 33. Simple hello world in Docker (pulling) • docker pull hello-world • docker run hello-world Evoteam.ir 33
- 34. Simple hello world in Docker(Dockerfile) FROM Alpine3.0.1 Echo “hello world” Evoteam.ir 34
- 35. Docker Concepts • Docker is composed of following four components Docker Client and Daemon Images registries Containers Evoteam.ir 35
- 36. Docker Concepts • Docker Daemon the Docker daemon runs on a host machine. The user does not directly interact with the daemon, but instead through the Docker client. • Docker Client The Docker client, in the form of the docker binary, is the primary user interface to Docker. It accepts commands from the user and communicates back and forth with a Docker daemon. • Images A Docker image is a read-only template. Images that exist on register (docker hub) Images that can created with build Evoteam.ir 36
- 37. Docker Concepts • Registeries Docker registries hold images. These are public or private stores from which you upload or download images. The public Docker registry is provided with the Docker Hub. • Containers Docker containers are similar to a directory. A Docker container holds everything that is needed for an application to run. Each container is created from a Docker image. Evoteam.ir 37
- 38. How Does Docker Work? Evoteam.ir 38
- 39. What happens when you run a container? • Pulls the image • Creates a new container • Allocates a filesystem and mounts a read-write layer • Allocates a network / bridge interface • Sets up an IP address • Executes a process that you specify • Captures and provides application output Evoteam.ir 39
- 40. PaaS GOAL: • Creates an abstracted environment that supports an efficient, costeffective, and repeatable process for the creation and deployment of high-quality applications. • The infrastructure such as network, storage etc. and applications are managed for customers and support is available. • Services are constantly updated and existing features get upgraded Evoteam.ir 40
- 41. PaaS & Container • Nowadays, companies are following microservice architecture and creating containerized apps which could not be run on traditional paas frameworks. • We design our pass frameworks along with containers such as Docker as they provide flexibility and easy monitoring of our applications. • Sometimes it becomes difficult for a application developer to setup and create the environment on a container there are some companies such as cloud foundry which setup and manages the containers and the developer can write and run its code. • This allows us to run multi-layered application on the cloud. Evoteam.ir 41
- 43. What is PaaS and containerization roll in agile? • Development Agility: Faster time-to-market Better feedback loop More frequent iterations with less impact in change process More user requirements met Less change requests Alignment with business Positioning IT as a value center and partner to business • Derived: https://apprenda.com/blog/what-does-paas-have-to-do-with-agile-development-very- little-except-for-the-benefits/ Evoteam.ir 43
- 44. Acknoledgments Thanks to: Jérôme Petazzoni Mohammadreza Amini Amir Arsalan For their wonderful slides and presentation and I used some of their slides in my presentation Also many thanks to http://saphanatutorial.com for their tutorial on hello world in cloud foundry Evoteam.ir 44
Editor's Notes
- public cloud service from a provider, where the consumer controls software deployment with minimal configuration options, and the provider provides the networks, servers, storage, OS, 'middleware' (i.e.; java runtime, .net runtime, integration, etc.), database and other services to host the consumer's application; or as a private service (software or appliance) inside the firewall, or as software deployed on a public infrastructure as a service.