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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Renat,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Thanks for your valuable comments.
</span><span style="font-size:11.0pt;font-family:Wingdings;color:#1F497D">J</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">The “custom action” needs to re-install Mistral.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">If the Mistral service is part of 3rd party OpenStack, it may be unacceptable to let every user create his own customer action. What do you think?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Thanks,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Tony<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> Renat Akhmerov [mailto:rakhmerov@mirantis.com]
<br>
<b>Sent:</b> Saturday, October 17, 2015 3:25 AM<br>
<b>To:</b> OpenStack Development Mailing List (not for usage questions)<br>
<b>Subject:</b> Re: [openstack-dev] [mistral] How to call 3rd-party tools(such as Ansible) in Mistral<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Hi, see my answers inline.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On 16 Oct 2015, at 12:35, WANG, Ming Hao (Tony T) <<a href="mailto:tony.a.wang@alcatel-lucent.com">tony.a.wang@alcatel-lucent.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">We have developed some Ansible playbooks for operation automation, and we are investigating if we can change the automation engine from Ansible to Mistral since Mistral has
powerful workflow control.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">Could you please help to provide how to let Mistral call Ansible playbook or Ansible module?<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">I would recommend to write a custom action (not ad-hoc actions in DSL, they are pretty limited). You can just write a python class and make it available in Mistral workflow. It is pretty easy to do and described at [1]. In Python you’ll
have more control on how to call ansible properly. If you have any specific questions on that you can join our IRC channel #openstack-mistral and talk to us there.<o:p></o:p></p>
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<o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">My understanding is to use ssh std_action to let Mistral access Ansible server to call Ansible playbook/modules since Mistral ad-hoc action must base on an existing system
action.<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Yes, you can use std.ssh action but I guess it won’t be too convenient because you’ll have to deal with shell commands directly. Yes, ad-hoc actions can help you do it in a more elegant manner but they are pretty limited and allow to create
only wrappers. With Python custom actions (it can be a class hierarchy, for example) you can do much more. For instance, you can expose individual ansible actions and transform their params in a form that better fits workflow DSL.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Anyway, it’s just my preference. You may like this second option better.<o:p></o:p></p>
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<o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">Another question is:<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">If we install Mistral and Ansible on a same server, is it possible to simplify it?<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Yes, like I described above.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">[1] <a href="http://docs.openstack.org/developer/mistral/developer/creating_custom_action.html">http://docs.openstack.org/developer/mistral/developer/creating_custom_action.html</a><o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Renat Akhmerov<o:p></o:p></p>
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<p class="MsoNormal">@ Mirantis Inc.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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