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Difference between revisions of "Nova/RemoteDebugging"

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Once you have the configuration done, press the bug to start the debugger  
 
Once you have the configuration done, press the bug to start the debugger  
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[[File:Start Debbugging.png|framed|left]]
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[[File:Start Debbugging.png|thumb|right]]
 
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You should see the debugger waiting for connection
 
You should see the debugger waiting for connection
 
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[[File:Waiting For Debbugging.png|framed|left|Waiting for debug connection]]
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[[File:Waiting For Debbugging.png|thumb|right|Waiting for debug connection]]
 
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=== Preparing the client ===
 
=== Preparing the client ===
  
 
First you need to copy the pydev client script to the environment where you are running nova services.
 
First you need to copy the pydev client script to the environment where you are running nova services.

Revision as of 19:52, 13 December 2013

Remote Debugging in Nova

You can use a remote debugger to attach to nova services by specifying the host and port as command line arguments. For example

/usr/local/bin/nova-compute --config-file /etc/nova/nova.conf --remote_debug-host 172.16.245.1 --remote_debug-port 1234

In order to do this you need to have a remote debug server - this wiki describes how to use remote debugging with pycharm. You need a commercial license to do remote debugging with pycharm.

Preparing the server


Start pycharm and create a remote debug runtime configuration. Change the host and port to your IP address and the port you want to use. The path map shows how to translate the path in your nova environment to the path that your debug server understands. The example here shows /opt/stack/nova mapped to /Volume/OpenStack/nova. I have used samba to mount my /opt/stack directory on my debug host at mount point /Volume/Openstack. You need this or you will not be able to see your code and set breakpoints.

Pycharm remote debug setup.png



Once you have the configuration done, press the bug to start the debugger

Start Debbugging.png



You should see the debugger waiting for connection

Waiting for debug connection


Preparing the client

First you need to copy the pydev client script to the environment where you are running nova services.