Installing Forem on Ubuntu 18.04 (Part 6 - ElasticSearch)

#guide #selfhost

If there is anything you would like me to change, please comment. This section of the guide assumes you have already installed Redis from the previous article.

Installing ElasticSearch

Use wget to download ElasticSearch debian package from the official website by typing:

$ wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-7.5.2-amd64.deb

Install ElasticSearch by typing:

$ sudo dpkg -i elasticsearch-7.5.2-amd64.deb

Configuration

To configure Elasticsearch to start automatically when the system boots up, type:

$ sudo /bin/systemctl daemon-reload
$ sudo /bin/systemctl enable elasticsearch.service
$ sudo systemctl start elasticsearch.service

Testing ElasticSearch

Start by checking that the ElasticSearch service is running:

$ sudo systemctl status elasticsearch

The output will be something like this:

● elasticsearch.service - Elasticsearch
   Loaded: loaded (/usr/lib/systemd/system/elasticsearch.service; enabled; vendor preset: enabled)
   Active: active (running) since Sun 2020-08-23 06:31:46 UTC; 11min ago
     Docs: http://www.elastic.co
 Main PID: 6901 (java)
    Tasks: 49 (limit: 4671)
   CGroup: /system.slice/elasticsearch.service
           ├─6901 /usr/share/elasticsearch/jdk/bin/java -Des.networkaddress.cache.ttl=60 -Des.networkaddress.cache.
           └─7011 /usr/share/elasticsearch/modules/x-pack-ml/platform/linux-x86_64/bin/controller

To verify ElasticSearch is active, type:

$ curl localhost:9200

The output will be something like this:

{
  "name" : "instance-1",
  "cluster_name" : "elasticsearch",
  "cluster_uuid" : "AT69_T_DTp_8FYJh4MXA",
  "version" : {
    "number" : "7.5.2",
    "build_flavor" : "default",
    "build_type" : "deb",
    "build_hash" : "cd1afcdf",
    "build_date" : "2020-01-15T12:11:52.313576Z",
    "build_snapshot" : false,
    "lucene_version" : "8.3.0",
    "minimum_wire_compatibility_version" : "6.8.0",
    "minimum_index_compatibility_version" : "6.0.0-beta1"
  },
  "tagline" : "You Know, for Search"
}