Cluster browser

The CrateDB admin UI comes with a cluster browser that allows you to inspect all of the nodes that are in your cluster.

Table of contents


Here’s what a single node cluster looks like:


In this example, there is one node named Monte Civetta. When selected from the left-hand sub-navigation menu, information about a node is displayed.


The cluster browser features:

Node listing:The list of nodes gives basic summary information for each node: node name, hostname, CrateDB version, and a visual icon indicating whether the node is a master node or not and the node data status health check.
Node list ordering:The list of nodes can be ordered by name or node health.
Detailed node information:Selecting a node from the node list will display details about that particular node.

The following subsections explain the detailed node information.



The name of the node.

CrateDB automatically names unnamed nodes.


The hostname of the node.

CrateDB Version:

The version of CrateDB the node is running.

This is important information when performing a rolling upgrade.


The URL of the node’s HTTP endpoint.

CPU Usage:

A visual indicator of system CPU utilization.

Heap Usage:

A visual indicator of allocated Java Virtual Machine (JVM) heap utilization.

Disk Usage:

A visual indicator of system disk space utilization.

CrateDB CPU Usage:

A visual indicator of the CrateDB process CPU utilization.


1min:Average load over one minute.
5min:Average load over five minutes.
15min:Average load over fifteen minutes.

CPU cores

Cores:The number of CPU cores.


Initializing:The number of shards currently being initialized.
Started:The number of started shards.
Reallocating:The number of shards that are being moved to another node.
Post Recovery:The number of shards that have been recovered but have not yet been started.

Disk operations


Total size of reads on the disk in bytes.

This value is deprecated.


Total size of writes on the disk in bytes.

This value is deprecated.


Number of reads on the disk.


Number of writes on the disk.