![Stateful Applications in Docker?! [2014]
OR
@ravilach](https://image.slidesharecdn.com/calltheoperator-atlk8smeetup-180725145530/85/Someone-Call-the-Operator-ATL-K8-s-Meetup-3-320.jpg)
![Stateful Applications in Docker?! [2018]
OR
@ravilach](https://image.slidesharecdn.com/calltheoperator-atlk8smeetup-180725145530/85/Someone-Call-the-Operator-ATL-K8-s-Meetup-6-320.jpg)
![Wait, is this a CRD?!
● CRD is a Custom Resource Definition in the K8’s spec.
Next generation of “Third Party Resource” <1.8
● Custom endpoint which represents a custom K8’s
installation.
● Below setting up a CronTab via K8’s [CNF exam].
@ravilach](https://image.slidesharecdn.com/calltheoperator-atlk8smeetup-180725145530/85/Someone-Call-the-Operator-ATL-K8-s-Meetup-9-320.jpg)
Someone Call the Operator - ATL K8's Meetup
- 1. July 2018 Call the Operator! A little dabble into Kubernetes Operators and Operator SDK Ravi Lachhman
- 2. Ravi Lachhman ● Technical Evangelist at AppDynamics. ● Prior experience at Mesosphere, Red Hat, and IBM. ● Specialties include SQL and NoSQL DB corruptions and not being able to do CIDR calculations. @ravilach
- 3. Stateful Applications in Docker?! [2014] OR @ravilach
- 4. Our Friend, the Technology Curve https://blog.risingstack.com/the-history-of-kubernetes/ @ravilach
- 5. Our Friend, the Technology Curve ● MVP ● Describe your application in a deploy.yaml @ravilach
- 6. Stateful Applications in Docker?! [2018] OR @ravilach
- 7. Product Owner’s Dilemma https://deis.com/blog/2016/kubernetes-illustrated-guide/ @ravilach
- 8. Why the Operator? ● Steller example from Yellow Jacket, Neha Narkede, co- founder of Confluent. ● Allows programmatic mappings and packaging of application functionality to Kubernetes Primitives. ● Moving from describing applications in K8’s to building applications to K8’s. ● https://www.confluent.io/blog/introducing-the- confluent-operator-apache-kafka-on-kubernetes/ @ravilach
- 9. Wait, is this a CRD?! ● CRD is a Custom Resource Definition in the K8’s spec. Next generation of “Third Party Resource” <1.8 ● Custom endpoint which represents a custom K8’s installation. ● Below setting up a CronTab via K8’s [CNF exam]. @ravilach
- 10. A Brief History of the Operator ● Created by CoreOS in late 2016 ● Next rendition is the Operator SDK which was built in conjunction with Red Hat in the first half of 2018; this is a pre-alpha release. ● With the SDK, can start interfacing with low level API’s and primitives with K8’s. ● Getting traction with platforms such as Kafka, etc. @ravilach
- 11. +1 Controller ● A Controller is needed to manage resources, in this case a Custom Resource. ● A Custom Controller needs to watch, react, and update components. ● Get ready to write some GO! ● https://resources.coreos.com/youtube-coreos-fest- 2017/writing-a-custom-controller-extending-the- functionality-of-your-cluster @ravilach
- 12. Good Resources ● CoreOS Blog: ● https://coreos.com/blog/introducing-operators.html ● List of Operators ● https://github.com/operator-framework/awesome- operators ● Building a Controller ● https://engineering.bitnami.com/articles/kubewatch- an-example-of-kubernetes-custom-controller.html ● Controller Parts ● https://medium.com/@cloudark/kubernetes-custom- controllers-b6c7d0668fdf . @ravilach
- 13. July 2018 Go and Operate (or Control)! rlachhma@cicso.com @ravilach