1/27/2024 0 Comments Monit elasticsearch exampleprocess: Like the os section, this section offers metrics about resource usage, but limited to what the Elasticsearch JVM process is using.os: Information about the operating system’s resource usage, including CPU utilization and memory usage. Fielddata cache metrics (cache size and evictions).Indexing performance metrics from Part 1 that are prefixed indices.indexing.*, indices.refresh.*, and indices.flush.*.Query and fetch performance metrics from Part 1 that are prefixed arch.*.This is where you will find many key metrics, including but not limited to: The largest section is called indices, which contains detailed statistics gathered across all of the indices stored on the node in question. In the command below, we are querying two nodes by their names, node1 and node2 ( node.name in each node’s configuration file):Ĭurl localhost:9200/_nodes/node1,node2/statsĮach node’s metrics are divided into several sections, listed here along with the metrics they contain from Part 1. You can also query a specific node by specifying the ID, address, name, or attribute of the node. The output includes very detailed information about every node running in your cluster. The command to query the Node Stats API is: The Node Stats API is a powerful tool that provides access to nearly every metric from Part 1, with the exception of overall cluster health and pending tasks, which are only available via the Cluster Health API and the Pending Tasks API, respectively. They are also directed to localhost, which assumes that you are submitting the request locally otherwise, replace localhost with your node’s IP address. The commands in this post are formatted under the assumption that you are running each Elasticsearch instance’s HTTP service on the default port (9200). Node Stats API, Index Stats API, Cluster Stats API, Pending Tasks API Some of the metrics are exposed on multiple levels, such as search performance, which is provided on an index-level and node-level scope. There are five main HTTP APIs that you can use to monitor Elasticsearch:Īs you can see from the table below, all of the Elasticsearch metrics covered in Part 1 can be retrieved via these API endpoints. These APIs also provide data points that give you a snapshot of how your clusters are performing.īy default, Elasticsearch’s APIs expose metrics on port 9200, and return JSON responses about your clusters, nodes, and indices. Get the Product Brief Elasticsearch’s RESTful API + JSONĪs mentioned in Part 1, Elasticsearch makes it easy to interact with your clusters via RESTful API-you can easily index documents, update your cluster settings, and submit queries on the fly.
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