CRI - Container Runtime Interface
OCI - Open Container Initiative (has imagespec, runtimespec)
ContainerD - comes with CLI ctl (docker vs containerd?)
kublet - [Register Node, create PODs, Monitor Node & PODs). Registers the node to kubernetes cluster. It requests the container runtime engine like docker to pull container image on to the node to run pods. Monitors node & pods
Kube-Proxy - Network traffic between PODs
Services - Enable kube apps to be accessible outside cluster. 2 service types, They have an IP address
NodePort: Maps a port on the node to the Port on the pod
ClusterIP: Communication between pods within the cluster. Apps->DBs
LoadBalancer - Kube native load balancer
CNI - Container Network Interface
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