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diff --git a/docs/testing/user/userguide/opnfv_yardstick_tc092.rst b/docs/testing/user/userguide/opnfv_yardstick_tc092.rst new file mode 100644 index 000000000..895074a85 --- /dev/null +++ b/docs/testing/user/userguide/opnfv_yardstick_tc092.rst @@ -0,0 +1,196 @@ +.. This work is licensed under a Creative Commons Attribution 4.0 International +.. License. +.. http://creativecommons.org/licenses/by/4.0 +.. (c) OPNFV, Ericsson and others. + +************************************* +Yardstick Test Case Description TC092 +************************************* + ++-----------------------------------------------------------------------------+ +|SDN Controller resilience in HA configuration | +| | ++--------------+--------------------------------------------------------------+ +|test case id | OPNFV_YARDSTICK_TC092: SDN controller resilience and high | +| | availability HA configuration | +| | | ++--------------+--------------------------------------------------------------+ +|test purpose | This test validates SDN controller node high availability by | +| | verifying there is no impact on the data plane connectivity | +| | when one SDN controller fails in a HA configuration, | +| | i.e. all existing configured network services DHCP, ARP, L2, | +| | L3VPN, Security Groups should continue to operate | +| | between the existing VMs while one SDN controller instance | +| | is offline and rebooting. | +| | | +| | The test also validates that network service operations such | +| | as creating a new VM in an existing or new L2 network | +| | network remain operational while one instance of the | +| | SDN controller is offline and recovers from the failure. | +| | | ++--------------+--------------------------------------------------------------+ +|test method | This test case: | +| | 1. fails one instance of a SDN controller cluster running | +| | in a HA configuration on the OpenStack controller node | +| | | +| | 2. checks if already configured L2 connectivity between | +| | existing VMs is not impacted | +| | | +| | 3. verifies that the system never loses the ability to | +| | execute virtual network operations, even when the | +| | failed SDN Controller is still recovering | +| | | ++--------------+--------------------------------------------------------------+ +|attackers | In this test case, an attacker called “kill-process” is | +| | needed. This attacker includes three parameters: | +| | 1. ``fault_type``: which is used for finding the attacker's | +| | scripts. It should be set to 'kill-process' in this test | +| | | +| | 2. ``process_name``: should be set to sdn controller | +| | process | +| | | +| | 3. ``host``: which is the name of a control node where | +| | opendaylight process is running | +| | | +| | example: | +| | - ``fault_type``: “kill-process” | +| | - ``process_name``: “opendaylight-karaf” (TBD) | +| | - ``host``: node1 | +| | | ++--------------+--------------------------------------------------------------+ +|monitors | In this test case, the following monitors are needed | +| | 1. ``ping_same_network_l2``: monitor pinging traffic | +| | between the VMs in same neutron network | +| | | +| | 2. ``ping_external_snat``: monitor ping traffic from VMs to | +| | external destinations (e.g. google.com) | +| | | +| | 3. ``SDN controller process monitor``: a monitor checking | +| | the state of a specified SDN controller process. It | +| | measures the recovery time of the given process. | +| | | ++--------------+--------------------------------------------------------------+ +|operations | In this test case, the following operations are needed: | +| | 1. "nova-create-instance-in_network": create a VM instance | +| | in one of the existing neutron network. | +| | | ++--------------+--------------------------------------------------------------+ +|metrics | In this test case, there are two metrics: | +| | 1. process_recover_time: which indicates the maximun | +| | time (seconds) from the process being killed to | +| | recovered | +| | | +| | 2. packet_drop: measure the packets that have been dropped | +| | by the monitors using pktgen. | +| | | ++--------------+--------------------------------------------------------------+ +|test tool | Developed by the project. Please see folder: | +| | "yardstick/benchmark/scenarios/availability/ha_tools" | +| | | ++--------------+--------------------------------------------------------------+ +|references | TBD | +| | | ++--------------+--------------------------------------------------------------+ +|configuration | This test case needs two configuration files: | +| | 1. test case file: opnfv_yardstick_tc092.yaml | +| | - Attackers: see above “attackers” discription | +| | - Monitors: see above “monitors” discription | +| | - waiting_time: which is the time (seconds) from the | +| | process being killed to stoping monitors the | +| | monitors | +| | - SLA: see above “metrics” discription | +| | | +| | 2. POD file: pod.yaml The POD configuration should record | +| | on pod.yaml first. the “host” item in this test case | +| | will use the node name in the pod.yaml. | +| | | ++--------------+--------------------------------------------------------------+ +|test sequence | Description and expected result | +| | | ++--------------+--------------------------------------------------------------+ +|pre-action | 1. The OpenStack cluster is set up with an SDN controller | +| | running in a three node cluster configuration. | +| | | +| | 2. One or more neutron networks are created with two or | +| | more VMs attached to each of the neutron networks. | +| | | +| | 3. The neutron networks are attached to a neutron router | +| | which is attached to an external network the towards | +| | DCGW. | +| | | +| | 4. The master node of SDN controller cluster is known. | +| | | ++--------------+--------------------------------------------------------------+ +|step 1 | Start ip connectivity monitors: | +| | 1. Check the L2 connectivity between the VMs in the same | +| | neutron network. | +| | | +| | 2. Check the external connectivity of the VMs. | +| | | +| | Each monitor runs in an independent process. | +| | | +| | Result: The monitor info will be collected. | +| | | ++--------------+--------------------------------------------------------------+ +|step 2 | Start attacker: | +| | SSH to the VIM node and kill the SDN controller process | +| | determined in step 2. | +| | | +| | Result: One SDN controller service will be shut down | +| | | ++--------------+--------------------------------------------------------------+ +|step 3 | Restart the SDN controller. | +| | | ++--------------+--------------------------------------------------------------+ +|step 4 | Create a new VM in the existing Neutron network while the | +| | SDN controller is offline or still recovering. | +| | | ++--------------+--------------------------------------------------------------+ +|step 5 | Stop IP connectivity monitors after a period of time | +| | specified by “waiting_time” | +| | | +| | Result: The monitor info will be aggregated | +| | | ++--------------+--------------------------------------------------------------+ +|step 6 | Verify the IP connectivity monitor result | +| | | +| | Result: IP connectivity monitor should not have any packet | +| | drop failures reported | +| | | ++--------------+--------------------------------------------------------------+ +|step 7 | Verify process_recover_time, which indicates the maximun | +| | time (seconds) from the process being killed to recovered, | +| | is within the SLA. This step blocks until either the | +| | process has recovered or a timeout occurred. | +| | | +| | Result: process_recover_time is within SLA limits, if not, | +| | test case failed and stopped. | +| | | ++--------------+--------------------------------------------------------------+ +|step 8 | Start IP connectivity monitors for the new VM: | +| | 1. Check the L2 connectivity from the existing VMs to the | +| | new VM in the Neutron network. | +| | | +| | 2. Check connectivity from one VM to an external host on | +| | the Internet to verify SNAT functionality. | +| | | +| | Result: The monitor info will be collected. | +| | | ++--------------+--------------------------------------------------------------+ +|step 9 | Stop IP connectivity monitors after a period of time | +| | specified by “waiting_time” | +| | | +| | Result: The monitor info will be aggregated | +| | | ++--------------+--------------------------------------------------------------+ +|step 10 | Verify the IP connectivity monitor result | +| | | +| | Result: IP connectivity monitor should not have any packet | +| | drop failures reported | +| | | ++--------------+--------------------------------------------------------------+ +|test verdict | Fails only if SLA is not passed, or if there is a test case | +| | execution problem. | +| | | ++--------------+--------------------------------------------------------------+ + |