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<p class="MsoNormal"><span lang="EN-US">Hello,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I would like to announce integration of <a href="https://wiki.openstack.org/wiki/Murano">
Murano</a> Application catalog and <a href="https://wiki.openstack.org/wiki/Congress">
Congress</a> policy service. We call it <i>Policy guided fulfillment</i>. <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">The idea (which is currently implemented) is to use Congress as authority controlling deployment of Murano applications. Openstack administrator defines policy rules detecting validation of his business policies. When
end user is about to deploy Murano environment with applications, the Congress decides whether the environment is ok (i.e., Murano deploys the environment) or not (i.e., Murano cancels the deployment).<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">In future Congress policies will be used to react to various events generated by an application, Openstack, … e.g., scaling, remediation, … .<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">More implementation details<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l1 level1 lfo3"><![if !supportLists]><span lang="EN-US" style="font-family:Symbol"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US">Murano environment (i.e., application/services + its properties + relationships) is mapped (decomposed) to Congress data model (i.e., simple rules, …)<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l1 level1 lfo3"><![if !supportLists]><span lang="EN-US" style="font-family:Symbol"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US">There is a predefined policy rule
<i>predeploy_error</i> which has to be defined by an Administrator to detect the ‘errors’<o:p></o:p></span></p>
<p class="MsoListParagraph" style="margin-left:72.0pt;text-indent:-18.0pt;mso-list:l1 level2 lfo3">
<![if !supportLists]><span lang="EN-US" style="font-family:"Courier New""><span style="mso-list:Ignore">o<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US">example – do not allow use instances with more than 2048MB in the environment<o:p></o:p></span></p>
<p class="MsoListParagraph" style="margin-left:108.0pt;text-indent:-18.0pt;mso-list:l1 level3 lfo3">
<![if !supportLists]><span lang="EN-US" style="font-family:Wingdings"><span style="mso-list:Ignore">§<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US">rule explanation – in an environment (eid), find Murano object (obj_id) with property ‘flavor’ and check if the flavor’s RAM size is over given limit (2048MB), If so, then create error message.<o:p></o:p></span></p>
<p class="MsoListParagraph" style="margin-left:108.0pt;text-indent:-18.0pt;mso-list:l1 level3 lfo3">
<![if !supportLists]><span lang="EN-US" style="font-family:Wingdings"><span style="mso-list:Ignore">§<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US">Congress rules are written in datalog – check
</span><span lang="EN-US"><a href="https://wiki.openstack.org/wiki/Congress">Congress</a> for the documentation</span><span lang="EN-US"><o:p></o:p></span></p>
<pre>predeploy_errors(eid, obj_id, msg) :-<o:p></o:p></pre>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";mso-fareast-language:CS"> murano:objects(obj_id, eid, type),<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";mso-fareast-language:CS"> murano:properties(obj_id, "flavor", flavor_name),<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";mso-fareast-language:CS"> flavor_ram(flavor_name, ram),<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";mso-fareast-language:CS"> gt(ram, 2048),<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";mso-fareast-language:CS"> murano:properties(obj_id, "name", obj_name),<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";mso-fareast-language:CS"> concat(obj_name, ": instance flavor has RAM size over 2048MB", msg)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";mso-fareast-language:CS"><o:p> </o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l1 level1 lfo3"><![if !supportLists]><span lang="EN-US" style="font-family:Symbol"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US">Murano enforces the policy check on
<i>deploy</i> action as follows<o:p></o:p></span></p>
<p class="MsoListParagraph" style="margin-left:72.0pt;text-indent:-18.0pt;mso-list:l1 level2 lfo3">
<![if !supportLists]><span lang="EN-US" style="font-family:"Courier New""><span style="mso-list:Ignore">o<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US">Murano uses Congress’ simulation API for policy rule validations<o:p></o:p></span></p>
<p class="MsoListParagraph" style="margin-left:108.0pt;text-indent:-18.0pt;mso-list:l1 level3 lfo3">
<![if !supportLists]><span lang="EN-US" style="font-family:Wingdings"><span style="mso-list:Ignore">§<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US">In this case Congress temporary stores the decomposed Murano environment in order to evaluate the rules<o:p></o:p></span></p>
<p class="MsoListParagraph" style="margin-left:72.0pt;text-indent:-18.0pt;mso-list:l1 level2 lfo3">
<![if !supportLists]><span lang="EN-US" style="font-family:"Courier New""><span style="mso-list:Ignore">o<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US">Murano creates simulation sequence describing the environment decomposition<o:p></o:p></span></p>
<p class="MsoListParagraph" style="margin-left:72.0pt;text-indent:-18.0pt;mso-list:l1 level2 lfo3">
<![if !supportLists]><span lang="EN-US" style="font-family:"Courier New""><span style="mso-list:Ignore">o<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US">Murano calls the simulation API and process the result – base on that Murano either continue deployment, or deployment is failed.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">You can find all necessary steps to make it running, example and developer documentation as part of Murano documentation <a href="http://murano.readthedocs.org/en/latest/articles/policy_enf_index.html">http://murano.readthedocs.org/en/latest/articles/policy_enf_index.html</a>
. <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">You can also vote for our call for speaker summit presentations if you are interested
</span><span lang="EN-US" style="font-family:Wingdings">J</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo2"><![if !supportLists]><span lang="EN-US" style="font-family:Symbol"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US"><a href="https://www.openstack.org/vote-vancouver/Presentation/introducing-policy-guided-fulfillment-to-openstack-allowing-your-organization-to-set-business-policies-to-affect-application-deployment">https://www.openstack.org/vote-vancouver/Presentation/introducing-policy-guided-fulfillment-to-openstack-allowing-your-organization-to-set-business-policies-to-affect-application-deployment</a>
<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo2"><![if !supportLists]><span lang="EN-US" style="font-family:Symbol"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><a href="https://www.openstack.org/vote-vancouver/Presentation/governing-murano-application-deployment-with-congress-policy">https://www.openstack.org/vote-vancouver/Presentation/governing-murano-application-deployment-with-congress-policy</a><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:18.0pt"><span lang="EN-US">Radek<o:p></o:p></span></p>
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