blog-test-memberlist

blog-test-memberlist

A simple implementation example of hashicorp/memberlist, a Go library that manages cluster membership and member failure detection using a gossip based protocol.

Read the full blog post: https://totomz.github.io/posts/2023-02-18-memberlist/

Basics

The code in main.go should be self-explanatory.

The messages you want to broadcast must implement the Broadcast interface. To get messages, you need to provide a Delegate to the memberlist configuration

How to test

Install shMake,then

# on the first shell, create the docker network and spawn the first container 
# that will listen on port 3031
docker network create gossip
shmake run --port=3031 --node=localhost

# on a separate shall, start 2 more node
# The ip for the first node can be found by inspecting docker:
#  docker inspect -f '{{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}}' <container id>
shmake run --port=3032 --node=172.20.0.2
shmake run --port=3033 --node=172.20.0.2