[es] Elasticsearch 8 for Ubuntu

sudo systemctl daemon-reload
sudo systemctl enable elasticsearch.service

sudo systemctl start elasticsearch.servic​

curl -fsSL https://artifacts.elastic.co/GPG-KEY-elasticsearch | sudo apt-key add -

echo "deb https://artifacts.elastic.co/packages/8.x/apt stable main" | sudo tee -a /etc/apt/sources.list.d/elastic-8.x.list

sudo apt update

sudo apt install elasticsearch

sudo vi /etc/elasticsearch/elasticsearch.yml

......
xpack.security.enabled: false
......