ZooKeeper mntr metricsetedit

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

  • zookeeper.mntr.hostname: ZooKeeper hostname.
  • 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.

This is a default metricset. If the host module is unconfigured, this metricset is enabled by default.


For a description of each field in the metricset, see the exported fields section.

Here is an example document generated by this metricset:

    "@timestamp": "2017-10-12T08:05:34.853Z",
    "event": {
        "dataset": "zookeeper.mntr",
        "duration": 115000,
        "module": "zookeeper"
    "metricset": {
        "name": "mntr",
        "period": 10000
    "service": {
        "address": "",
        "node": {
            "name": "0"
        "type": "zookeeper",
        "version": "3.5.5-390fe37ea45dee01bf87dc1c042b5e3dcce88653, built on 05/03/2019 12:07 GMT"
    "zookeeper": {
        "mntr": {
            "approximate_data_size": 44,
            "ephemerals_count": 0,
            "latency": {
                "avg": 0,
                "max": 0,
                "min": 0
            "max_file_descriptor_count": 1048576,
            "num_alive_connections": 1,
            "open_file_descriptor_count": 49,
            "outstanding_requests": 0,
            "packets": {
                "received": 34,
                "sent": 33
            "server_state": "standalone",
            "watch_count": 0,
            "znode_count": 5