we have already tried this command but our proxy is not allowing us to install this plugin form web.
So we have tried installing plugin using manual steps listed in Github (and installation is successful now) but still showing the error as given below
[ServerName~bin]$ ./plugin install /elkt/software/logstash-input-http_poller-master/logstash-input-http_poller-1.1.2.gem
Validating /elkt/software/logstash-input-http_poller-master/logstash-input-http_poller-1.1.2.gem
Installing logstash-input-http_poller
Installation successful
[Server Name~bin]$ ./logstash -f http_pollar.conf
The error reported is:
Couldn't find any input plugin named 'http_poller'. Are you sure this is correct? Trying to load the http_poller input plugin resulted in this error: no such file to load -- logstash/inputs/http_poller