<code>ca-key.pem</code>: the generated intermediate key</li><li><code>cert-chain.pem</code>: the generated certificate chain which is used by istiod</li><li><code>root-cert.pem</code>: the root certificate</li></ul><p>You can replace <code>cluster1</code> with a string of your choosing. For example, with the argument <code>cluster2-cacerts</code>,
you can create certificates and key in a directory called <code>cluster2</code>.</p><p>If you are doing this on an offline machine, copy the generated directory t