How can you check if Elasticsearch is running

To check if Elasticsearch is running, you can use the following methods:

Use the command line: Run the command service elasticsearch status to check the status of the Elasticsearch service.
Use the REST API: Send a GET request to the /_cluster/health endpoint to check the health of the cluster.
Use the Kibana interface: Go to the Kibana dashboard and check the "Cluster Health" panel.
Use a third-party monitoring tool: There are a number of third-party monitoring tools that can be used to check the status of Elasticsearch, such as Elastic Cloud, Prometheus, and Grafana.

FAQs:

How do I start Elasticsearch? Use the command service elasticsearch start.
How do I stop Elasticsearch? Use the command service elasticsearch stop.
How do I restart Elasticsearch? Use the command service elasticsearch restart.
How do I check the logs for Elasticsearch? Use the command journalctl -u elasticsearch.
How do I upgrade Elasticsearch? Follow the official Elasticsearch upgrade documentation.

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How can you check if Elasticsearch is running?