RMQ Cluster Crashed

I am using RabbitMQ version 3.10 and it is running on AWS EKS Cluster. There are about 8 AWS Nodes running and in each node only RMQ pod is running.

Yesterday AWS terminated one of the node due to Hardware Issue. But Entire stack went down. We lost all the connections until we restore the RMQ

When we analyzed the logs only thing i able to found below log

 Node ‘rab…@test-rabbitmq2-6.test-rabbitmq2.test.svc.cluster.local‘ not responding **”.

Just want to know. if only one node is going down then why entire cluster is broken