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diff --git a/docs/testing/user/userguide/opnfv_yardstick_tc093.rst b/docs/testing/user/userguide/opnfv_yardstick_tc093.rst new file mode 100644 index 000000000..31fa5d3d3 --- /dev/null +++ b/docs/testing/user/userguide/opnfv_yardstick_tc093.rst @@ -0,0 +1,184 @@ +.. This work is licensed under a Creative Commons Attribution 4.0 International +.. License. +.. http://creativecommons.org/licenses/by/4.0 +.. (c) OPNFV, Intracom Telecom and others. +.. mardim@intracom-telecom.com + +************************************* +Yardstick Test Case Description TC093 +************************************* + ++-----------------------------------------------------------------------------+ +|SDN Vswitch resilience in non-HA or HA configuration | +| | ++--------------+--------------------------------------------------------------+ +|test case id | OPNFV_YARDSTICK_TC093: SDN Vswitch resilience in | +| | non-HA or HA configuration | ++--------------+--------------------------------------------------------------+ +|test purpose | This test validates that network data plane services are | +| | resilient in the event of Virtual Switch failure | +| | in compute nodes. Specifically, the test verifies that | +| | existing data plane connectivity is not permanently impacted | +| | i.e. all configured network services such as DHCP, ARP, L2, | +| | L3 Security Groups continue to operate between the existing | +| | VMs eventually after the Virtual Switches have finished | +| | rebooting. | +| | | +| | The test also validates that new network service operations | +| | (creating a new VM in the existing L2/L3 network or in a new | +| | network, etc.) are operational after the Virtual Switches | +| | have recovered from a failure. | +| | | ++--------------+--------------------------------------------------------------+ +|test method | This testcase first checks if the already configured | +| | DHCP/ARP/L2/L3/SNAT connectivity is proper. After | +| | it fails and restarts again the VSwitch services which are | +| | running on both OpenStack compute nodes, and then checks if | +| | already configured DHCP/ARP/L2/L3/SNAT connectivity is not | +| | permanently impacted (even if there are some packet | +| | loss events) between VMs and the system is able to execute | +| | new virtual network operations once the Vswitch services | +| | are restarted and have been fully recovered | +| | | ++--------------+--------------------------------------------------------------+ +|attackers | In this test case, two attackers called “kill-process” are | +| | needed. These attackers include 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 the name of the Vswitch | +| | process | +| | | +| | 3. host: which is the name of the compute node where the | +| | Vswitch process is running | +| | | +| | e.g. -fault_type: "kill-process" | +| | -process_name: "openvswitch" | +| | -host: node1 | +| | | ++--------------+--------------------------------------------------------------+ +|monitors | This test case utilizes two monitors of type "ip-status" | +| | and one monitor of type "process" to track the following | +| | conditions: | +| | 1. "ping_same_network_l2": monitor ICMP traffic between | +| | VMs in the same Neutron network | +| | | +| | 2. "ping_external_snat": monitor ICMP traffic from VMs to | +| | an external host on the Internet to verify SNAT | +| | functionality. | +| | | +| | 3. "Vswitch process monitor": a monitor checking the | +| | state of the specified Vswitch process. It measures | +| | the recovery time of the given process. | +| | | +| | Monitors of type "ip-status" use the "ping" utility to | +| | verify reachability of a given target IP. | +| | | ++--------------+--------------------------------------------------------------+ +|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. outage_time: measures the total time in which | +| | monitors were failing in their tasks (e.g. total time of | +| | Ping failure) | +| | | ++--------------+--------------------------------------------------------------+ +|test tool | Developed by the project. Please see folder: | +| | "yardstick/benchmark/scenarios/availability/ha_tools" | +| | | ++--------------+--------------------------------------------------------------+ +|references | none | +| | | ++--------------+--------------------------------------------------------------+ +|configuration | This test case needs two configuration files: | +| | 1. test case file: opnfv_yardstick_tc093.yaml | +| | - Attackers: see above “attackers” description | +| | - monitor_time: which is the time (seconds) from | +| | starting to stoping the monitors | +| | - Monitors: see above “monitors” discription | +| | - SLA: see above “metrics” description | +| | | +| | 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 Vswitches are set up in both compute nodes. | +| | | +| | 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 towards the | +| | DCGW. | +| | | ++--------------+--------------------------------------------------------------+ +|step 1 | Start IP connectivity monitors: | +| | 1. Check the L2 connectivity between the VMs in the same | +| | 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 2 | Start attackers: | +| | SSH connect to the VIM compute nodes and kill the Vswitch | +| | processes | +| | | +| | Result: the SDN Vswitch services will be shutdown | +| | | ++--------------+--------------------------------------------------------------+ +|step 3 | Verify the results of the IP connectivity monitors. | +| | | +| | Result: The outage_time metric reported by the monitors | +| | is not greater than the max_outage_time. | +| | | ++--------------+--------------------------------------------------------------+ +|step 4 | Restart the SDN Vswitch services. | +| | | ++--------------+--------------------------------------------------------------+ +|step 5 | Create a new VM in the existing Neutron network | +| | | ++--------------+--------------------------------------------------------------+ +|step 6 | Verify connectivity between VMs as follows: | +| | 1. Check the L2 connectivity between the previously | +| | existing VM and the newly created VM on the same | +| | Neutron network by sending ICMP messages | +| | | ++--------------+--------------------------------------------------------------+ +|step 7 | Stop IP connectivity monitors after a period of time | +| | specified by “monitor_time” | +| | | +| | Result: The monitor info will be aggregated | +| | | ++--------------+--------------------------------------------------------------+ +|step 8 | Verify the IP connectivity monitor results | +| | | +| | Result: IP connectivity monitor should not have any packet | +| | drop failures reported | +| | | ++--------------+--------------------------------------------------------------+ +|test verdict | This test fails if the SLAs are not met or if there is a | +| | test case execution problem. The SLAs are define as follows | +| | for this test: | +| | * SDN Vswitch recovery | +| | * process_recover_time <= 30 sec | +| | | +| | * no impact on data plane connectivity during SDN | +| | Vswitch failure and recovery. | +| | * packet_drop == 0 | +| | | ++--------------+--------------------------------------------------------------+ + |