// IsInstalled checks whether DM has been installed.
func IsInstalled(runner kubectl.Runner) bool {
// Basically, we test "all-or-nothing" here: if this returns without error
// we know that we have both the namespace and the manager API server.
_, err := runner.GetByKind("rc", "manager-rc", "helm")
if err != nil {
return false
}
return true
}
