Changes between Version 11 and Version 12 of DRM4G/UseCases

Timestamp:

Jan 30, 2017 6:20:25 PM (5 years ago)

Author:

minondoa

Comment:

--

DRM4G/UseCases

@@ -491 +491 @@
 }}}
 {{{#!td
-The user will indicate in the "__resources.conf__" with the configuration keys "'''''max_nodes'''''" and "'''''min_nodes'''''" how many VMs he wants created.
+The user will indicate in the "__resources.conf__" with the configuration keys "'''''max_nodes'''''" and "'''''min_nodes'''''" how many VMs he wants created
 }}}
 |----------------
@@ -545 +545 @@
 
 
+{{{#!th colspan=2 align=justify
+'''Use case''': [=#DestroyingVMsdynamically Destroying VMs dynamically]
+}}}
+|----------------
+{{{#!td
+'''Description'''
+}}}
+{{{#!td
+The DRM4G will check if certain parameters have been met and then will proceed to destroy the VMs
+}}}
+|----------------
+{{{#!td
+'''Primary Actor'''
+}}}
+{{{#!td
+DRM4G
+}}}
+|----------------
+{{{#!td
+'''Preconditions'''
+}}}
+{{{#!td
+* There must be a resource in the configuration defined with the purpose for the creation of VMs
+* The user must have already [#Creatingcloudcredentials created his x509 certificate proxy]
+}}}
+|----------------
+{{{#!td
+'''Basic Flow'''
+}}}
+{{{#!td
+1. For each VM, the DRM4G will check how many jobs it's currently running
+1. If there aren't any jobs, the VM will be given an '''''idle''''' state
+ a. It will remain in this state until it's assigned a job
+1. If a VM stays '''''idle''''' for a certain amount of time, it will be destroyed
+ a. If a VM has been marked to be destroyed but the user has already been charged for it, it won't be destroyed until the time it has been hired for has passed
+ a. If a VM has been marked to be destroyed but a job is assigned to it, it will be given a second chance, but the the second time it gets marked it will be destroyed
+}}}
+|----------------
+{{{#!td
+'''Postconditions'''
+}}}
+{{{#!td
+* The VMs will be correctly destroyed until the number of available VMs reaches "'''''min_nodes'''''"
+}}}
+|----------------
+{{{#!td
+'''Alternate Flow'''
+}}}
+{{{#!td
+1. If the user has run out of money, all VMs will be destroyed
+ a. It will wait for the last paid hour to pass before destroying the VM
+}}}
+
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+[[br]]
+
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+
 {{{#!comment