openstack error with ec2 api tools

openstack error with ec2 api tools

I have downloaded ec2rc.sh file on my computer and sourced it. When I try
to use ec2 commands such as: ec2-describe-images I get an error:
Unexpected error: org.codehaus.xfire.fault.XFireFault: Server returned
error code = 400 for URI : http://mycloud.org:8773/services/Cloud . Check
server logs for details at
org.codehaus.xfire.fault.XFireFault.createFault(XFireFault.java:89) at
org.codehaus.xfire.client.Invocation.invoke(Invocation.java:83) at
org.codehaus.xfire.client.Invocation.invoke(Invocation.java:114) at
org.codehaus.xfire.client.Client.invoke(Client.java:336) at
org.codehaus.xfire.client.XFireProxy.handleRequest(XFireProxy.java:77) at
org.codehaus.xfire.client.XFireProxy.invoke(XFireProxy.java:57) at
com.sun.proxy.$Proxy12.describeImages(Unknown Source) at
com.amazon.aes.webservices.client.Jec2Impl.describeImages(Jec2Impl.java:534)
at
com.amazon.aes.webservices.client.cmd.DescribeImages.invokeOnline(DescribeImages.java:158)
at com.amazon.aes.webservices.client.cmd.BaseCmd.invoke(BaseCmd.java:1061)
at
com.amazon.aes.webservices.client.cmd.DescribeImages.main(DescribeImages.java:182)
Caused by: org.codehaus.xfire.XFireRuntimeException: Server returned error
code = 400 for URI : http://mycloud.org:8773/services/Cloud . Check server
logs for details at
org.codehaus.xfire.transport.http.HttpChannel.sendViaClient(HttpChannel.java:130)
at org.codehaus.xfire.transport.http.HttpChannel.send(HttpChannel.java:48)
at
org.codehaus.xfire.handler.OutMessageSender.invoke(OutMessageSender.java:26)
at
org.codehaus.xfire.handler.HandlerPipeline.invoke(HandlerPipeline.java:131)
at org.codehaus.xfire.client.Invocation.invoke(Invocation.java:79) ... 9
more
On the controller node, there is nothing to report in keystone.log. I get
the following message in nova.log
2013-09-18 13:20:45.389 4958 INFO nova.ec2.wsgi.server [-] (4958) accepted
('130.237.221.115', 65154)
2013-09-18 13:20:45.400 4958 ERROR nova.api.ec2 [-] Unauthorized:
Signature not provided 2013-09-18 13:20:45.401 4958 INFO nova.api.ec2 [-]
0.1073s myhost POST /services/Cloud None:None 400 [ec2-api-tools 1.6.10.0]
text/xml text/xml 2013-09-18 13:20:45.402 4958 INFO nova.ec2.wsgi.server
[-] myhost "POST /services/Cloud HTTP/1.1" status: 400 len: 314 time:
0.0022440
What am I missing here?
Thanks