you establish trust
between all clusters in the mesh. Depending on the requirements for your
system, there may be multiple options available for establishing trust.
See <a href=/v1.8/docs/tasks/security/cert-management/>certificate management</a> for
detailed descriptions and instructions for all available options.
Depending on which option you choose, the installation instructions for
Istio may change slightly.</p><p>This guide will assume that you use a common root to generate intermediate
certificates fo