Merge "Manual Tests: Networking Internal DNS Resolution"
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Networking Internal DNS resolution
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==================================
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Users of an OpenStack cloud would like to look up their instances by name in
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an intuitive way using the Domain Name System. This subdomain show the way
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that we are testing this feature.
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.. contents::
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:local:
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:depth: 1
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-----------------
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NET_IN_DNS_RES_03
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-----------------
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:Test ID: NET_IN_DNS_RES_03
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:Test Title: Disable internal DNS on AIO simplex system
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:Tags: DNS
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~~~~~~~~~~~~~~~~~~
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Testcase Objective
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~~~~~~~~~~~~~~~~~~
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This test case shows the way that DNS can be disabled and how is going to
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affect the communication with the VM's.
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~~~~~~~~~~~~~~~~~~~
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Test Pre-Conditions
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~~~~~~~~~~~~~~~~~~~
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a)Install any AIO symplex system.
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~~~~~~~~~~
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Test Steps
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~~~~~~~~~~
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1. Enable DNS resolution (Ml2 network service parameter will be created with
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value=dns), by issuing the following commands:
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::
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$ system service-parameter-add network ml2 exentsion_drivers=dns
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$ system service-parameter-add network default dns_domain=<your_domain.com>
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2. Lock/Unlock controllers.
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3. Boot 2 VM's.
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4. Ping between VM's via their hostnames. The communication between VM's
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should be successful.
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5. Perform VM actions: stop/pause/resume. VM's survives actions and internal
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DNS resolution is not impacted.
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6. Disable DNS resolution by deleting system service parameter associated with
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network/dns service.
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::
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$ system service-parameter-delete <net-id>
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7. Lock/Unlock the controller.
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8. Create 2 new VM's.
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9. Attempt to ping between new VM's via their hostnames.
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~~~~~~~~~~~~~~~~~
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Expected Behavior
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~~~~~~~~~~~~~~~~~
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After disabling/deleting internal dns resolution, VM's shouldn't be able to
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resolve IP's via hostnames.
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