...

$ curl  -u me@example.com:me_pwd \
    -b ~/cookies.txt -c ~/cookies.txt \
    http://<platform_host>:<platform_port_number>/v3v4/<endpoint>

where:

...

1. Verify that your version of cURL supports GSS:
   
   

   Code Block
   $ curl -V curl 7.51.0 (x86_64-apple-darwin16.0) libcurl/7.51.0 SecureTransport zlib/1.2.8 Protocols: dict file ftp ftps gopher http https imap imaps ldap ldaps pop3 pop3s rtsp smb smbs smtp smtps telnet tftp Features: AsynchDNS IPv6 Largefile GSS-API Kerberos SPNEGO NTLM NTLM_WB SSL libz UnixSockets

2. Verify that GSS-API and SPNEGO are in the output.

3. Run kinit and authenticate using the hadoop Hadoop principal:

   Code Block
   $ kinit Please enter the password for [hadoop.user.principal]@localhost: $

4. Access using cURL: 
   
   

   Code Block
   $ curl --negotiate -u anything \ -b ~/cookies.txt -c ~/cookies.txt \ http://<platform_host>:<platform_port_number>/v3v4/<endpoint>

   where:

   Parameter	Description
   --negotiate	Enables SPNEGO use in cURL. This option requires a library built with GSS-API or SSPI support. If this option is used several times, only the first one is used. Use --proxy-negotiate to enable Negotiate (SPNEGO) for proxy authentication.
   -u anything	Required username. However, this username is ignored. Instead, the principal used in kinit is applied.

...