What underlying technology does flannel use to allow pods to communicate?
Flannel is one of the simplest implementation of kubernetes network model. It uses the existing docker bridge network and an extra Tun device with a daemon process to do UDP encapsulation. I explained the details of the core part: cross host container communication, and briefly mentioned the performance penalty.Click to see full answer. Also to…
Flannel is one of the simplest implementation of kubernetes network model. It uses the existing docker bridge network and an extra Tun device with a daemon process to do UDP encapsulation. I explained the details of the core part: cross host container communication, and briefly mentioned the performance penalty.Click to see full answer. Also to know is, how do pods communicate with each other?Containers within a pod share an IP address and port space, and can find each other via localhost. They can also communicate with each other using standard inter-process communications. Containers in different pods have distinct IP addresses and can not communicate by IPC.Also, what is flannel network? flannel is a virtual network that gives a subnet to each host for use with container runtimes. Platforms like Google’s Kubernetes assume that each container (pod) has a unique, routable IP inside the cluster. Keeping this in view, how do Kubernetes pods communicate? Communication between pods and services In Kubernetes, a service lets you map a single IP address to a set of pods. You make requests to one endpoint (domain name/IP address) and the service proxies requests to a pod in that service. This process maps virtual IP addresses to a group of actual pod IP addresses.What do containers share inside a pod?Every container in a Pod shares the network namespace, including the IP address and network ports. Containers inside a Pod can communicate with one another using localhost .
