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Kubernetes Controllers, Custom Controllers and Operators explained with use cases

In this video we looked into what exactly are Kubernetes controllers, Custom Controllers and Operators in Kubernetes. We actually started with the controllers that are running as part of Controller manger and then defined the custom controller. A part from that we also looked into the use cases of Operators and then defined them. The use case that we looked into was managing a distributed database on top of Kubernetes, we discussed about the problems that database administrators will encounter if they want to add another node on the DB cluster or if in case they have to change the leader node. Web: https://viveksingh.dev/ Twitter:   / viveksinghggits   00:00 Introduction 00:18 Agenda 00:34 Brief Kubernetes Controller Manger 01:43 What are Kubernetes Controllers 02:14 Deployment Kubernetes Controller 04:01 Improved definition of Controllers 05:23 Browsing through Controller Manger's Controllers 06:10 Querying current state of cluster 08:43 Current state and expected state 09:13 What are Custom Controllers 10:07 Discussing controller that syncs secrets b/w namespaces 12:57 Running distributed database on Kubernetes 13:46 Adding a node on database and manual intervention 17:02 Changing Leader of DB Cluster 17:45 How operators help us 18:28 Operators with Custom Resources 22:06 Conclusion 23:03 thanks for watching