While I'm try to install a package such "license & shield" via command "bin/elasticsearch-plugin install" I'm getting error : ERROR: Unknown plugin license
I tried to install the packed as written in your documentation https://www.elastic.co/guide/en/shield/current/installing-shield.html#deb-rpm-install for the installation procedure.
I most mention that I have installed other plugins such "x-pack" with out any problems
here is the command / error in the end of it
my system is RedHatEnterpriseServer 7.3 x64
/usr/share/elasticsearch $ sudo bin/plugin install license
A tool for managing installed elasticsearch plugins
list - Lists installed elasticsearch plugins
install - Install a plugin
remove - removes a plugin from Elasticsearch
-h, --help show help
-s, --silent show minimal output
-v, --verbose show verbose output
ERROR: Unknown plugin license
any suggestions what can I do to solve this issue?