The Cloud Convergence: OpenStack and Kubernetes.
1 like513 views
Murano is an OpenStack project that introduces an application catalog for publishing and deploying ready-to-use applications. It provides a way to abstract applications from underlying infrastructure resources and supports both Linux and Windows. Murano uses a dashboard, API, engine, and agents to deploy and manage applications. Kubernetes is an open source container orchestration tool that improves on Borg to manage containers across clusters. It uses components like pods, replication controllers, and services to deploy and scale containerized applications reliably. Together, Murano and Kubernetes provide application cataloging and deployment abilities while abstracting applications from infrastructure resources managed by OpenStack.
The Cloud Convergence: OpenStack and Kubernetes.
- 1. Copyright © 2015 Mirantis, Inc. All rights reserved www.mirantis.com The Cloud Convergence: OpenStack and Kubernetes. Ihor Dvoretskyi Operations Engineer
- 2. Copyright © 2015 Mirantis, Inc. All rights reserved Murano: An OpenStack App Management Tool ● The Application catalog - a single-point to publish different ready-to-use applications ● The Murano Project introduces an application catalog to OpenStack, enabling application developers and cloud administrators to publish various cloud- ready applications in a browsable categorized catalog. ● Murano ready-to-use applications are being published on Community App Catalog - http://apps.openstack.org, source code is being published on GitHub - https://github.com/openstack/murano. ● Murano provides possibility to to be abstract from underlying IaaS resources ● Murano supports multiple OS options (Linux & Windows)
- 3. Copyright © 2015 Mirantis, Inc. All rights reserved Murano Architecture ● Murano Dashboard (UI) ○ Uses python murano client to call Murano API ● Murano API ○ Exposes REST API ○ Sends tasks to the engine using RabbitMQ ● Murano Engine ○ Listens for tasks on RabbitMQ ○ Sends API calls to Heat API ○ Sends tasks to agents via RabbitMQ ● Murano Agent ○ Is located on guest VM’s ○ Listens for tasks from RabbitMQ ○ Returns results back to Murano engine using RabbitMQ
- 4. Copyright © 2015 Mirantis, Inc. All rights reserved Containers: benefits of usage ● Container - is a lightweight isolation technology that allows users to launch applications in an isolated environment on Linux ● Containers usage is a totally different way of application management ● Containers have the huge benefits, that should be the perfect reasons to prefer them over the alternative technologies: ○ Performance ○ Repeatability ○ Isolation ○ Portability
- 5. Copyright © 2015 Mirantis, Inc. All rights reserved Containers - are not VMs Containers VMs Primary use case Containers are build for managing applications, but not the infrastructure VM management solution has capabilities for managing the infrastructure (network, compute, storage etc.) Guest OS support For production environments only Linux might be used natively Any common operating system Performance Containers do not incur performance overhead VMs incur performance overhead Security and isolation Containers are using the shared kernel - that’s not a full isolation VMs are fully isolated, any kind of failure will not affect other VM Application management Containers are managed as a code and do need specific management software (e.g. Kubernetes) VMs are managed as the fully- loaded machines
- 6. Copyright © 2015 Mirantis, Inc. All rights reserved Kubernetes as a container orchestration tool ● The predecessor of Kubernetes was the “Borg” container orchestration tool, originally developed by Google. ● All the best ideas from Borg were incorporated into Kubernetes, that is open sourced and is available for everyone and runs everywhere ● Kubernetes is a container orchestrator that runs containers and supports various underlying environments
- 7. Copyright © 2015 Mirantis, Inc. All rights reserved Kubernetes components Kubernetes consists of the following main components: ● Cluster - a set of nodes used by Kubernetes to run applications ● Node - a virtual or physical machine, where Kubelet is runned and where pods can be created ● Pod - the smallest unit of Kubernetes - a colocated group of applications, running the same context (e.g. - “Webserver”) ● Replication Controller - a loop that drives current state towards expected state ● Service - a set of running pods that run together (e.g. - load-balanced backends) ● Labels - identifying metadata attached to their objects (dev vs prod)
- 8. Copyright © 2015 Mirantis, Inc. All rights reserved Kubernetes Multi-Node Architecture
- 9. Copyright © 2015 Mirantis, Inc. All rights reserved Kubernetes & Murano Summary ● Docker provides: ○ The benefits of containers usage ● Kubernetes provides: ○ Portability, isolation from the underlying layers (infrastructure) ○ Container management, service discovery, load balancing ● Murano provides: ○ Ready-to-install applications ○ Cluster management ○ Infrastructure automation and autoscaling options ○ Application catalogue ● OpenStack provides: ○ Infrastructure as a Service layer for everything above
- 10. Copyright © 2015 Mirantis, Inc. All rights reserved Demo Demo deployment of Kubernetes cluster on OpenStack using Murano