Cloud-Native Streaming Platform: Apache Kafka Meets Kubernetes

Cloud-Native Streaming Platform: Apache Kafka Meets Kubernetes @gamussa #BOSDataDay @confluentinc

#devkafkaops @gamussa #BOSDataDay @ @confluentinc

@gamussa #BOSDataDay @confluentinc

https://twitter.com/kelseyhightower/status/963413508300812295 @gamussa #BOSDataDay @ @confluentinc

https://twitter.com/kelseyhightower/status/963414038603427840 @gamussa #BOSDataDay @ @confluentinc

Don’t despair… “… not even over the fact that you don't despair. Just when everything seems over with, new forces come marching up, and precisely that means that you are alive” Franz Kafka @gamussa #BOSDataDay @ @confluentinc

Kafka Streaming Architecture Fundamentals

@gamussa #BOSDataDay @ @confluentinc

Shard data to get scalability Producer (1) Producer (2) Producer (3) Messages are sent to different partitions Cluster of machines Partitions live on different machines @gamussa #BOSDataDay @confluentinc

Linearly Scalable Architecture Producers Single topic: - Many producers machines - Many consumer machines - Many Broker machines No Bottleneck!! Consumers @gamussa #BOSDataDay @confluentinc

Replicate to get fault tolerance leader msg Machine A @gamussa Machine B replicate msg #BOSDataDay @confluentinc

Replication provides resiliency A ‘replica’ takes over on machine failure @gamussa #BOSDataDay @confluentinc

High-level Architecture Application Application Application Native Client library Kafka Streams Load Balancer * REST Proxy Schema Registry Zookeeper Nodes Kafka Brokers @gamussa Kafka Connect #BOSDataDay @ @confluentinc

Bare minimum Kafka Brokers @gamussa Zookeeper Nodes #BOSDataDay @ @confluentinc

Workloads Deployment @gamussa #BOSDataDay @confluentinc

Helm Charts @gamussa #BOSDataDay @ @confluentinc

https://cnfl.io/helm_video @gamussa #BOSDataDay @confluentinc

Kafka deployment checklist PVC for Storage Uses ZK Headless Svc StatefulSet for 3-node zk PVC for Storage Optional Pod Anti-Affinity to spread the ZK ensemble across nodes StatefulSet for n-node Kafka Headless Service A group of NodePort Services for external traffic ConfigMap for Prometheus JMX exporter ConfigMap for Prometheus JMX exporter @gamussa #BOSDataDay @ @confluentinc

Meet Kubernetes Operator @gamussa #BOSDataDay @ @confluentinc

Kubernetes Operator Embedded with operational knowledge of both data software and Kubernetes Backup/restore Scale up/down Rebalance data Regular health checks @gamussa #BOSDataDay @ @confluentinc

Controller Brain behind Kubernetes resources e.g. replication controller, namespace controller etc. @gamussa #BOSDataDay @ @confluentinc

Custom Resource Definition(CRD) Extend existing Kubernetes API API StatefulSet ReplicaSet ... CRD Controller StatefulSet Controller ReplicaSet Controller ... Custom Controller ReplicaSet ... Custom Resource Instance @gamussa #BOSDataDay @ StatefulSet @confluentinc

Custom Resource Definition(CRD) Usually works together Custom Controller API StatefulSet ReplicaSet ... CRD Controller StatefulSet Controller ReplicaSet Controller ... Custom Controller ReplicaSet ... Custom Resource Instance @gamussa #BOSDataDay @ StatefulSet @confluentinc

Custom Resource Definition(CRD) Users can create and access Customer Resources with kubectl, just as they do for built-in API StatefulSet ReplicaSet ... CRD Controller StatefulSet Controller ReplicaSet Controller ... Custom Controller ReplicaSet ... Custom Resource Instance StatefulSet resources like pods. @gamussa #BOSDataDay @ @confluentinc

Operator Deploy and Manage your production streaming platform with Confluent Operator. Automated Provisioning Platform Operations Resiliency Monitoring @gamussa #BOSDataDay @ @confluentinc

Confluent Platform Reference Architecture Each Confluent Platform component has specific characteristics: Security (SSL certificates) DNS names and zones Application Application Application Native Client library Kafka Streams Load Balancer * Schema Registry REST Proxy Kafka Connect Host selection Fault tolerance Kafka Brokers Scaling @gamussa #BOSDataDay @ @confluentinc Zookeeper Nodes

Confluent Operator: Automated Provisioning Load Balancer Kafka Pod Kafka Pod Kafka Pod Storage @gamussa #BOSDataDay @ @confluentinc

Confluent Operator: Scale Horizontally Automate scaling: Spin up new broker pod(s) Distribute partitions to the new broker(s) Determine balancing plan Execute balancing plan Monitor resources @gamussa #BOSDataDay @ @confluentinc

Confluent Operator: Rolling Upgrade Automated rolling upgrade with no downtime for Kafka. Stop broker Wait for leader election to complete Start broker with new version Wait for zero under-replicatedpartitions Repeat @gamussa #BOSDataDay @ @confluentinc

Will it fly? Let’s see @gamussa #BOSDataDay @confluentinc

Confluent Operator Automate provisioning Scale your Kafkas and CP clusters elastically Monitor SLAs through Confluent Control Center or Prometheus Operate at scale with enterprise support from Confluent @gamussa #BOSDataDay @ @confluentinc

Advanced use cases vs. @gamussa #BOSDataDay @confluentinc

Don’t despair! @gamussa #BOSDataDay @ @confluentinc

Resources and Next Steps https://cnfl.io/helm_video https://cnfl.io/cp-helm https://cnfl.io/k8s https://slackpass.io/confluentcommunity #kubernetes @gamussa #BOSDataDay @confluentinc

Thanks! @gamussa viktor@confluent.io @gamussa #BOSDataDay @ @confluentinc