DevOps & Containers

Port 2181

ZooKeeper

Apache ZooKeeper distributed coordination service

Port
2181
Protocol
TCP
Service
ZooKeeper
Security
Dangerous
Full name: Apache ZooKeeper

What is port 2181?

Port 2181 is used by Apache ZooKeeper, a distributed coordination service for large-scale distributed systems including Kafka, HBase, and Hadoop. It manages configuration data, naming, distributed synchronization, and group membership. An exposed ZooKeeper instance can leak sensitive cluster configuration and potentially allow an attacker to disrupt or take control of the entire distributed system.

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