elasticsearchHow do I install Elasticsearch on Ubuntu 22.04?

1. Download the .deb package from the Elastic website: https://www.elastic.co/downloads/elasticsearch.
2. Install the package with sudo dpkg -i elasticsearch-<version>.deb.
3. Enable the Elasticsearch service with sudo systemctl enable elasticsearch.service.
4. Start the Elasticsearch service with sudo systemctl start elasticsearch.service.
5. Check the status of the Elasticsearch service with sudo systemctl status elasticsearch.service.

sudo systemctl status elasticsearch.service

● elasticsearch.service - Elasticsearch
   Loaded: loaded (/usr/lib/systemd/system/elasticsearch.service; enabled; vendor preset: enabled)
   Active: active (running) since Tue 2020-05-26 11:46:30 UTC; 1min 10s ago
     Docs: http://www.elastic.co
 Main PID: 28101 (java)
    Tasks: 47 (limit: 4661)
   CGroup: /system.slice/elasticsearch.service
           └─28101 /usr/bin/java -Xms1g -Xmx1g -XX:+UseConcMarkSweepGC -XX:CMSInitiatingOccupancyFraction=75 -XX:+UseCMSInitiatingOccupancyOnly -XX:+AlwaysPreTouch -Xss1m -Djava.awt.headless=true -Dfile.encoding=UTF-8 -Djna.nosys=true -XX:-OmitStackTraceInFastThrow -Dio.netty.noUnsafe=true -Dio.netty.noKeySetOptimization=true -Dio.netty.recycler.maxCapacityPerThread=0 -Dlog4j.shutdownHookEnabled=false -Dlog4j2.disable.jmx=true -Dlog4j.skipJansi=true -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=data -XX:ErrorFile=logs/hs_err_pid%p.log -Xlog:gc*,gc+age=trace,safepoint:file=logs/gc.log:utctime,pid,tags:filecount=32,filesize=64m -Djava.locale.providers=COMPAT -XX:UseAVX=2 -Des.path.home=/usr/share/elasticsearch -cp /usr/share/elasticsearch/lib/* org.elasticsearch.bootstrap.Elasticsearch -p /var/run/elasticsearch/elasticsearch.pid --quiet

6. Check if Elasticsearch is running by making a request to the server: curl -X GET "localhost:9200".

curl -X GET "localhost:9200"

{
  "name" : "node-1",
  "cluster_name" : "elasticsearch",
  "cluster_uuid" : "HXF5U5-lQ-q-7wTf-q3-A",
  "version" : {
    "number" : "7.6.2",
    "build_flavor" : "default",
    "build_type" : "deb",
    "build_hash" : "ef48eb35cf30adf4db14086e8aabd07ef6fb113f",
    "build_date" : "2020-03-26T06:34:37.794943Z",
    "build_snapshot" : false,
    "lucene_version" : "8.4.0",
    "minimum_wire_compatibility_version" : "6.8.0",
    "minimum_index_compatibility_version" : "6.0.0-beta1"
  },
  "tagline" : "You Know, for Search"
}

7. You can now access the Elasticsearch API at localhost:9200.

For more detailed instructions, please refer to the official Elasticsearch documentation: https://www.elastic.co/guide/en/elasticsearch/reference/current/deb.html.

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