I am trying to install a new graylog-server setup on Ubuntu 16.04. So far I was able to install Elasticsearch, MangoDB. The process where I am stuck is adding the graylog repository. It is giving a insecure certificate error.
ERROR: cannot verify packages.graylog2.org’s certificate, issued by ‘CN=COMODO RSA Domain Validation Secure Server CA,O=COMODO CA Limited,L=Salford,ST=Greater Manchester,C=GB’:
Issued certificate not yet valid.
To connect to packages.graylog2.org insecurely, use `–no-check-certificate’.
I even tried by passing `–no-check-certificate’ parameter, but then it fails to update the repositories cache and says update failed old cache is used.
Can someone please help?