我想做的事情 (Wǒ zuò de
Elasticsearchをシングルノードで設定し、外部からデータを追加・検索できるようにする
验证环境
VagrantでホスティングしたUbuntu Server 22.04 LTS
安装
$ wget -qO - https://artifacts.elastic.co/GPG-KEY-elasticsearch | sudo gpg --dearmor -o /usr/share/keyrings/elasticsearch-keyring.gpg
$ sudo apt update
$ sudo apt install apt-transport-https -y
$ echo "deb [signed-by=/usr/share/keyrings/elasticsearch-keyring.gpg] https://artifacts.elastic.co/packages/8.x/apt stable main" | sudo tee /etc/apt/sources.list.d/elastic-8.x.list
$ sudo apt update
$ sudo apt install elasticsearch -y
设定
-
リモートからHTTP(TCPポート9200番)でのアクセスを受け付けるよう設定
認証やHTTPS通信をオフにするよう設定(検証を簡単にするため)
$ sudo vim /etc/elasticsearch/elasticsearch.yml
# cluster.initial_master_nodes: ["ubuntu2204.localdomain"]
discovery.type: single-node
http.host: 0.0.0.0
http.port: 9200
xpack.security.enabled: false
TCPポート9200番への外部からのアクセスを許可する設定
$ sudo ufw status
Status: inactive
$ sudo ufw enable
Command may disrupt existing ssh connections. Proceed with operation (y|n)? y
Firewall is active and enabled on system startup
$ sudo ufw allow 9200/tcp
Rule added
Rule added (v6)
$ sudo ufw status
Status: active
To Action From
-- ------ ----
9200/tcp ALLOW Anywhere
9200/tcp (v6) ALLOW Anywhere (v6)
启动
$ sudo systemctl start elasticsearch
$ sudo systemctl status elasticsearch
● elasticsearch.service - Elasticsearch
Loaded: loaded (/lib/systemd/system/elasticsearch.service; disabled; vendor preset: enabled)
Active: active (running) since Mon 2023-12-11 00:53:44 UTC; 45s ago
Docs: https://www.elastic.co
Main PID: 3703 (java)
Tasks: 74 (limit: 2237)
Memory: 1.3G
CPU: 1min 10.987s
CGroup: /system.slice/elasticsearch.service
├─3703 /usr/share/elasticsearch/jdk/bin/java -Xms4m -Xmx64m -XX:+UseSerialGC -Dcli.name=server -Dcli.script=/usr/share/elasticsearch/bin/elasticsearch -Dcli.libs=lib/tools/server-cli -Des.path.home=/usr/>
├─3761 /usr/share/elasticsearch/jdk/bin/java -Des.networkaddress.cache.ttl=60 -Des.networkaddress.cache.negative.ttl=10 -Djava.security.manager=allow -XX:+AlwaysPreTouch -Xss1m -Djava.awt.headless=true ->
└─3781 /usr/share/elasticsearch/modules/x-pack-ml/platform/linux-x86_64/bin/controller
Dec 11 00:53:09 ubuntu2204.localdomain systemd[1]: Starting Elasticsearch...
Dec 11 00:53:13 ubuntu2204.localdomain systemd-entrypoint[3703]: Dec 11, 2023 12:53:13 AM sun.util.locale.provider.LocaleProviderAdapter <clinit>
Dec 11 00:53:13 ubuntu2204.localdomain systemd-entrypoint[3703]: WARNING: COMPAT locale provider will be removed in a future release
Dec 11 00:53:44 ubuntu2204.localdomain systemd[1]: Started Elasticsearch.
$ ss -nlp | grep 9200
tcp LISTEN 0 4096 *:9200 *:*
确认动作
# ヘルスチェック
$ curl -X GET "192.168.56.10:9200/_cluster/health?pretty"
{
"cluster_name" : "elasticsearch",
"status" : "green",
"timed_out" : false,
"number_of_nodes" : 1,
"number_of_data_nodes" : 1,
"active_primary_shards" : 0,
"active_shards" : 0,
"relocating_shards" : 0,
"initializing_shards" : 0,
"unassigned_shards" : 0,
"delayed_unassigned_shards" : 0,
"number_of_pending_tasks" : 0,
"number_of_in_flight_fetch" : 0,
"task_max_waiting_in_queue_millis" : 0,
"active_shards_percent_as_number" : 100.0
}
# messagesインデックスを作成
$ curl -X PUT "192.168.56.10:9200/messages?pretty"
{
"acknowledged" : true,
"shards_acknowledged" : true,
"index" : "messages"
}
# データを作成
$ curl -X POST "192.168.56.10:9200/messages/_doc/1/?pretty" -H "Content-Type: application/json" -d '{"message": "hello, world"}'
{
"_index" : "messages",
"_id" : "1",
"_version" : 1,
"result" : "created",
"_shards" : {
"total" : 2,
"successful" : 1,
"failed" : 0
},
"_seq_no" : 0,
"_primary_term" : 1
}
# データを確認
$ curl -X GET "192.168.56.10:9200/messages/_doc/1?pretty"
{
"_index" : "messages",
"_id" : "1",
"_version" : 3,
"_seq_no" : 2,
"_primary_term" : 1,
"found" : true,
"_source" : {
"message" : "hello, world"
}
}
