but what is the name of metadata file, i cannot find this address in (/var/www) from where apache is serving files /Shibboleth.sso/Metadata

wget --no-check-certificate -O https://service.example.org/Shibboleth.sso/Metadata (https://service.example.org/Shibbolet...) i tried this cmd it shows http 404 not found error but i check the service is running but it cannot reachable when i am using this cmd so can please found the issue in this particular seconrio

Are you using your fqdn/IP of the shibboleth host or service.example.org?

Also check if apache is properly running

Regards

i am using my ip in place of http://service.example.org , apache is running fine i had checked using ps -ef and netstat