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[Identity API v2.0 and v3 History](https://docs.openstack.org/keystone/latest/contributor/http-api.html)).\n+\n+Basically to login, you should provide:\n+\n+* On v2: *tenant*, *user*, *password*.\n+* On v3: a *project* (new name for *tenant*), an authentication *domain* for this *project*, a *user*, an authentication *domain* for this *user* (the two domains can be different).\n+\n+JClouds provide backward compatibility between keystone v2-v3 ... but you should have following section in mind to fully understand the authentication on your Openstack platform (in addition of blog: [OpenStack Keystone V3 Support](https://jclouds.apache.org/blog/2018/01/16/keystone-v3/)).\n+\n+### v2\n+\n+This snippet:\n+{% highlight java %}\n+final Properties overrides = new Properties();\n+overrides.put(KeystoneProperties.KEYSTONE_VERSION, 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