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mntr Metricset fetches the data returned by the mntr admin keyword. It exposes the following metrics:

• zookeeper.mntr.approximate_data_size: Approximate size of ZooKeeper data.
• zookeeper.mntr.latency.avg: Average latency between ensemble hosts in milliseconds.
• zookeeper.mntr.ephemerals_count: Number of ephemeral znodes.
• zookeeper.mntr.followers: Number of followers seen by the current host.
• zookeeper.mntr.max_file_descriptor_count: Maximum number of file descriptors allowed for the ZooKeeper process.
• zookeeper.mntr.latency.max: Maximum latency in milliseconds.
• zookeeper.mntr.latency.min: Minimum latency in milliseconds.
• zookeeper.mntr.num_alive_connections: Number of connections to ZooKeeper that are currently alive.
• zookeeper.mntr.open_file_descriptor_count: Number of file descriptors open by the ZooKeeper process.
• zookeeper.mntr.outstanding_requests: Number of outstanding requests that need to be processed by the cluster.
• zookeeper.mntr.packets.received: Number of ZooKeeper network packets received.
• zookeeper.mntr.packets.sent: Number of ZooKeeper network packets sent.
• zookeeper.mntr.pending_syncs: Number of pending syncs to carry out to ZooKeeper ensemble followers.
• zookeeper.mntr.server_state: Role in the ZooKeeper ensemble.
• zookeeper.mntr.synced_followers: Number of synced followers reported when a node server_state is leader.
• zookeeper.mntr.version: Version and build string reported.
• zookeeper.mntr.watch_count: Number of watches currently set on the local ZooKeeper process.
• zookeeper.mntr.znode_count: Number of znodes reported by the local ZooKeeper process.