Kibana X Pack installation failed

[muthu_kumar1 (Muthu Kumar)]

$ bin/kibana-plugin install x-pack
Attempting to transfer from x-pack
Attempting to transfer from https://artifacts.elastic.co/downloads/kibana-plugins/x-pack/x-pack-6.2.1.zip
Error: Client request error: getaddrinfo ENOTFOUND artifacts.elastic.co artifacts.elastic.co:443
Plugin installation was unsuccessful due to error "Client request error: getaddrinfo ENOTFOUND artifacts.elastic.co artifacts.elastic.co:443

Is there any way to install X-Pack standalone?

[warkolm (Mark Walkom)]

https://www.elastic.co/guide/en/kibana/6.2/installing-xpack-kb.html has offline installation steps.