#install offline pack plugin
You can install the offline plugin with this command 'bin/logstash-plugin install file://D:/ELK/logstash-5.6.0/bin/offline-logstash-tsn-log4j2.zip'
#create offline pack plugin
#example
bin/logstash-plugin prepare-offline-pack --overwrite --output offline-logstash-tsn-log4j2.zip(to create zip name) logstash-tsn-log4j2(pluginname)
#nfs offline pkg
https://pkgs.org/download/nfs-utils
http://nfs.sourceforge.net/nfs-howto/ar01s03.html
#Linux install nfs guide
https://blog.csdn.net/scott_bing/article/details/78142553
http://blog.51cto.com/13958260/2176210
https://blog.csdn.net/qq_18600061/article/details/79025898
https://www.elastic.co/guide/cn/elasticsearch/guide/current/backing-up-your-cluster.html
https://www.cnblogs.com/powpoia/p/6553205.html
ES readonlyrest plugin
Download the zip file
cd to the Elasticsearch home
bin/elasticsearch-plugin install file:///download-folder/readonlyrest-1.16.31_es6.3.0.zip
Edit readonlyrest.yml and add your configuration snippets. Also, refer to the official documentation (https://github.com/beshu-tech/readonlyrest-docs/blob/master/elasticsearch.md#rules)