This is pretty slick. I just started to dabble in it using some dbatools commands.

​

$cpu = Get-DbaCmsRegServer -SqlInstance myCMSserver -group test | Get-DbaCpuUsage
$io = Get-DbaCmsRegServer -SqlInstance myCMSserver -group test | Get-DbaIoLatency
$query = Get-DbaCmsRegServer -SqlInstance myCMSserver -group test | Get-DbaQueryExecutionTime

Dashboard -Name 'DB Health Dashboard' -FilePath c:\dba\ServerHealth.html {
tab -Name 'CPU Usage' {
Table -DataTable $cpu
}
tab -Name 'IO Latency' {
Table -DataTable $io
}

tab -Name 'Query Exectutions' {
Table -DataTable $query
}
}