<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
</head>
<body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">
<div style="color: rgb(0, 0, 0); font-size: 14px; font-family: Corbel, sans-serif; ">
Hi all,</div>
<div style="color: rgb(0, 0, 0); font-size: 14px; font-family: Corbel, sans-serif; ">
<br>
</div>
<div style="color: rgb(0, 0, 0); font-size: 14px; font-family: Corbel, sans-serif; ">
I notice in the <a href="http://docs.openstack.org/developer/ceilometer/webapi/v2.html#meters">
Ceilometer V2 web API</a> that it's possible to set a period for meter statistics but I don't quite understand the format of how to do so. In the
<a href="http://docs.openstack.org/developer/ceilometer/webapi/v2.html#functional-examples">
functional examples section</a> it says to pass URL parameters, but when I send a GET to</div>
<div style="color: rgb(0, 0, 0); font-size: 14px; font-family: Corbel, sans-serif; ">
<br>
</div>
<div style="color: rgb(0, 0, 0); font-size: 14px; font-family: Corbel, sans-serif; ">
http://my-vm-hostname:8777/v2/meters/my-meter-id/statistics?period=3600</div>
<div style="color: rgb(0, 0, 0); font-size: 14px; font-family: Corbel, sans-serif; ">
<br>
</div>
<div style="color: rgb(0, 0, 0); font-size: 14px; "><font face="Corbel,sans-serif">I get an error that contains </font><font face="Courier">faultstring": "unsupported operand type(s) for -: 'NoneType' and 'NoneType'"</font></div>
<div style="color: rgb(0, 0, 0); font-size: 14px; "><font face="Courier"><br>
</font></div>
<div>Can somebody point me to what I'm doing wrong?</div>
<div><br>
</div>
<div>Thanks,</div>
<div>Mark</div>
</body>
</html>