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diff --git a/docs/testing/user/testspecification/highavailability/index.rst b/docs/testing/user/testspecification/highavailability/index.rst index e69de29b..715f84d0 100644 --- a/docs/testing/user/testspecification/highavailability/index.rst +++ b/docs/testing/user/testspecification/highavailability/index.rst @@ -0,0 +1,743 @@ +.. This work is licensed under a Creative Commons Attribution 4.0 International +.. License. +.. http://creativecommons.org/licenses/by/4.0 +.. (c) OPNFV, China Mobile and others. + +========================================== +OpenStack Services HA test specification +========================================== + +.. toctree:: +:maxdepth: + +Scope +===== + +The HA test area evaluates the ability of the System Under Test to support service +continuity and recovery from component failures on part of OpenStack controller services("nova-api", +"neutron-server", "keystone", "glance-api", "cinder-api") and on "load balancer" service. + +The tests in this test area will emulate component failures by killing the +processes of above target services, stressing the CPU load or blocking +disk I/O on the selected controller node, and then check if the impacted +services are still available and the killed processes are recovered on the +selected controller node within a given time interval. + + +References +================ + +This test area references the following specifications: + +- ETSI GS NFV-REL 001 + + - http://www.etsi.org/deliver/etsi_gs/NFV-REL/001_099/001/01.01.01_60/gs_nfv-rel001v010101p.pdf + +- OpenStack High Availability Guide + + - https://docs.openstack.org/ha-guide/ + + +Definitions and abbreviations +============================= + +The following terms and abbreviations are used in conjunction with this test area + +- SUT - system under test +- Monitor - tools used to measure the service outage time and the process + outage time +- Service outage time - the outage time (seconds) of the specific OpenStack + service +- Process outage time - the outage time (seconds) from the specific processes + being killed to recovered + + +System Under Test (SUT) +======================= + +The system under test is assumed to be the NFVi and VIM in operation on a +Pharos compliant infrastructure. + +SUT is assumed to be in high availability configuration, which typically means +more than one controller nodes are in the System Under Test. + +Test Area Structure +==================== + +The HA test area is structured with the following test cases in a sequential +manner. + +Each test case is able to run independently. Preceding test case's failure will +not affect the subsequent test cases. + +Preconditions of each test case will be described in the following test +descriptions. + + +Test Descriptions +================= + +--------------------------------------------------------------- +Test Case 1 - Controller node OpenStack service down - nova-api +--------------------------------------------------------------- + +Short name +---------- + +opnfv.ha.tc001.nova-api_service_down + +Use case specification +---------------------- + +This test case verifies the service continuity capability in the face of the +software process failure. It kills the processes of OpenStack "nova-api" +service on the selected controller node, then checks whether the "nova-api" +service is still available during the failure, by creating a VM then deleting +the VM, and checks whether the killed processes are recovered within a given +time interval. + + +Test preconditions +------------------ + +There is more than one controller node, which is providing the "nova-api" +service for API end-point. +Denoted a controller node as Node1 in the following configuration. + + +Basic test flow execution description and pass/fail criteria +------------------------------------------------------------ + +Methodology for verifying service continuity and recovery +''''''''''''''''''''''''''''''''''''''''''''''''''''''''' + +The service continuity and process recovery capabilities of "nova-api" service +is evaluated by monitoring service outage time, process outage time, and results +of nova operations. + +Service outage time is measured by continuously executing "openstack server list" +command in loop and checking if the response of the command request is returned +with no failure. +When the response fails, the "nova-api" service is considered in outage. +The time between the first response failure and the last response failure is +considered as service outage time. + +Process outage time is measured by checking the status of "nova-api" processes on +the selected controller node. The time of "nova-api" processes being killed to +the time of the "nova-api" processes being recovered is the process outage time. +Process recovery is verified by checking the existence of "nova-api" processes. + +All nova operations are carried out correctly within a given time interval which +suggests that the "nova-api" service is continuously available. + +Test execution +'''''''''''''' +* Test action 1: Connect to Node1 through SSH, and check that "nova-api" + processes are running on Node1 +* Test action 2: Create a image with "openstack image create test-cirros + --file cirros-0.3.5-x86_64-disk.img --disk-format qcow2 --container-format bare" +* Test action 3: Execute"openstack flavor create m1.test --id auto --ram 512 + --disk 1 --vcpus 1" to create flavor "m1.test". +* Test action 4: Start two monitors: one for "nova-api" processes and the other + for "openstack server list" command. + Each monitor will run as an independent process +* Test action 5: Connect to Node1 through SSH, and then kill the "nova-api" + processes +* Test action 6: When "openstack server list" returns with no error, calculate + the service outage time, and execute command "openstack server create + --flavor m1.test --image test-cirros test-instance" +* Test action 7: Continuously Execute "openstack server show test-instance" + to check if the status of VM "test-instance" is "Active" +* Test action 8: If VM "test-instance" is "Active", execute "openstack server + delete test-instance", then execute "openstack server list" to check if the + VM is not in the list +* Test action 9: Continuously measure process outage time from the monitor until + the process outage time is more than 30s + +Pass / fail criteria +'''''''''''''''''''' + +The process outage time is less than 30s. + +The service outage time is less than 5s. + +The nova operations are carried out in above order and no errors occur. + +A negative result will be generated if the above is not met in completion. + +Post conditions +--------------- + +Restart the process of "nova-api" if they are not running. +Delete image with "openstack image delete test-cirros" +Delete flavor with "openstack flavor delete m1.test" + + +--------------------------------------------------------------------- +Test Case 2 - Controller node OpenStack service down - neutron-server +--------------------------------------------------------------------- + +Short name +---------- + +opnfv.ha.tc002.neutron-server_service_down + +Use case specification +---------------------- + +This test verifies the high availability of the "neutron-server" service +provided by OpenStack controller nodes. It kills the processes of OpenStack +"neutron-server" service on the selected controller node, then checks whether +the "neutron-server" service is still available, by creating a network and +deleting the network, and checks whether the killed processes are recovered. + +Test preconditions +------------------ + +There is more than one controller node, which is providing the "neutron-server" +service for API end-point. +Denoted a controller node as Node1 in the following configuration. + +Basic test flow execution description and pass/fail criteria +------------------------------------------------------------ + +Methodology for monitoring high availability +'''''''''''''''''''''''''''''''''''''''''''' + +The high availability of "neutron-server" service is evaluated by monitoring +service outage time, process outage time, and results of neutron operations. + +Service outage time is tested by continuously executing "openstack router list" +command in loop and checking if the response of the command request is returned +with no failure. +When the response fails, the "neutron-server" service is considered in outage. +The time between the first response failure and the last response failure is +considered as service outage time. + +Process outage time is tested by checking the status of "neutron-server" +processes on the selected controller node. The time of "neutron-server" +processes being killed to the time of the "neutron-server" processes being +recovered is the process outage time. Process recovery is verified by checking +the existence of "neutron-server" processes. + +Test execution +'''''''''''''' + +* Test action 1: Connect to Node1 through SSH, and check that "neutron-server" + processes are running on Node1 +* Test action 2: Start two monitors: one for "neutron-server" process and the + other for "openstack router list" command. + Each monitor will run as an independent process. +* Test action 3: Connect to Node1 through SSH, and then kill the + "neutron-server" processes +* Test action 4: When "openstack router list" returns with no error, calculate + the service outage time, and execute "openstack network create test-network" +* Test action 5: Continuously executing "openstack network show test-network", + check if the status of "test-network" is "Active" +* Test action 6: If "test-network" is "Active", execute "openstack network + delete test-network", then execute "openstack network list" to check if the + "test-network" is not in the list +* Test action 7: Continuously measure process outage time from the monitor until + the process outage time is more than 30s + +Pass / fail criteria +'''''''''''''''''''' + +The process outage time is less than 30s. + +The service outage time is less than 5s. + +The neutron operations are carried out in above order and no errors occur. + +A negative result will be generated if the above is not met in completion. + +Post conditions +--------------- + +Restart the processes of "neutron-server" if they are not running. + + +--------------------------------------------------------------- +Test Case 3 - Controller node OpenStack service down - keystone +--------------------------------------------------------------- + +Short name +---------- + +opnfv.ha.tc003.keystone_service_down + +Use case specification +---------------------- + +This test verifies the high availability of the "keystone" service provided by +OpenStack controller nodes. It kills the processes of OpenStack "keystone" +service on the selected controller node, then checks whether the "keystone" +service is still available by executing command "openstack user list" and +whether the killed processes are recovered. + +Test preconditions +------------------ + +There is more than one controller node, which is providing the "keystone" +service for API end-point. +Denoted a controller node as Node1 in the following configuration. + +Basic test flow execution description and pass/fail criteria +------------------------------------------------------------ + +Methodology for monitoring high availability +'''''''''''''''''''''''''''''''''''''''''''' + +The high availability of "keystone" service is evaluated by monitoring service +outage time and process outage time + +Service outage time is tested by continuously executing "openstack user list" +command in loop and checking if the response of the command request is reutrned +with no failure. +When the response fails, the "keystone" service is considered in outage. +The time between the first response failure and the last response failure is +considered as service outage time. + +Process outage time is tested by checking the status of "keystone" processes on +the selected controller node. The time of "keystone" processes being killed to +the time of the "keystone" processes being recovered is the process outage +time. Process recovery is verified by checking the existence of "keystone" +processes. + +Test execution +'''''''''''''' + +* Test action 1: Connect to Node1 through SSH, and check that "keystone" + processes are running on Node1 +* Test action 2: Start two monitors: one for "keystone" process and the other + for "openstack user list" command. + Each monitor will run as an independent process. +* Test action 3: Connect to Node1 through SSH, and then kill the "keystone" + processes +* Test action 4: Calculate the service outage time and process outage time +* Test action 5: The test passes if process outage time is less than 20s and + service outage time is less than 5s +* Test action 6: Continuously measure process outage time from the monitor until + the process outage time is more than 30s + +Pass / fail criteria +'''''''''''''''''''' + +The process outage time is less than 30s. + +The service outage time is less than 5s. + +A negative result will be generated if the above is not met in completion. + +Post conditions +--------------- + +Restart the processes of "keystone" if they are not running. + + +----------------------------------------------------------------- +Test Case 4 - Controller node OpenStack service down - glance-api +----------------------------------------------------------------- + +Short name +---------- + +opnfv.ha.tc004.glance-api_service_down + +Use case specification +---------------------- + +This test verifies the high availability of the "glance-api" service provided +by OpenStack controller nodes. It kills the processes of OpenStack "glance-api" +service on the selected controller node, then checks whether the "glance-api" +service is still available, by creating image and deleting image, and checks +whether the killed processes are recovered. + +Test preconditions +------------------ + +There is more than one controller node, which is providing the "glance-api" +service for API end-point. +Denoted a controller node as Node1 in the following configuration. + + +Basic test flow execution description and pass/fail criteria +------------------------------------------------------------ + +Methodology for monitoring high availability +'''''''''''''''''''''''''''''''''''''''''''' + +The high availability of "glance-api" service is evaluated by monitoring +service outage time, process outage time, and results of glance operations. + +Service outage time is tested by continuously executing "openstack image list" +command in loop and checking if the response of the command request is returned +with no failure. +When the response fails, the "glance-api" service is considered in outage. +The time between the first response failure and the last response failure is +considered as service outage time. + +Process outage time is tested by checking the status of "glance-api" processes +on the selected controller node. The time of "glance-api" processes being +killed to the time of the "glance-api" processes being recovered is the process +outage time. Process recovery is verified by checking the existence of +"glance-api" processes. + +Test execution +'''''''''''''' + +* Test action 1: Connect to Node1 through SSH, and check that "glance-api" + processes are running on Node1 +* Test action 2: Start two monitors: one for "glance-api" process and the other + for "openstack image list" command. + Each monitor will run as an independent process. +* Test action 3: Connect to Node1 through SSH, and then kill the "glance-api" + processes +* Test action 4: When "openstack image list" returns with no error, calculate + the service outage time, and execute "openstack image create test-image + --file cirros-0.3.5-x86_64-disk.img --disk-format qcow2 --container-format bare" +* Test action 5: Continuously execute "openstack image show test-image", check + if status of "test-image" is "active" +* Test action 6: If "test-image" is "active", execute "openstack image delete + test-image". Then execute "openstack image list" to check if "test-image" is + not in the list +* Test action 7: Continuously measure process outage time from the monitor until + the process outage time is more than 30s + +Pass / fail criteria +'''''''''''''''''''' + +The process outage time is less than 30s. + +The service outage time is less than 5s. + +The glance operations are carried out in above order and no errors occur. + +A negative result will be generated if the above is not met in completion. + +Post conditions +--------------- + +Restart the processes of "glance-api" if they are not running. + +Delete image with "openstack image delete test-image". + + +----------------------------------------------------------------- +Test Case 5 - Controller node OpenStack service down - cinder-api +----------------------------------------------------------------- + +Short name +---------- + +opnfv.ha.tc005.cinder-api_service_down + +Use case specification +---------------------- + +This test verifies the high availability of the "cinder-api" service provided +by OpenStack controller nodes. It kills the processes of OpenStack "cinder-api" +service on the selected controller node, then checks whether the "cinder-api" +service is still available by executing command "openstack volume list" and +whether the killed processes are recovered. + +Test preconditions +------------------ + +There is more than one controller node, which is providing the "cinder-api" +service for API end-point. +Denoted a controller node as Node1 in the following configuration. + +Basic test flow execution description and pass/fail criteria +------------------------------------------------------------ + +Methodology for monitoring high availability +'''''''''''''''''''''''''''''''''''''''''''' + +The high availability of "cinder-api" service is evaluated by monitoring +service outage time and process outage time + +Service outage time is tested by continuously executing "openstack volume list" +command in loop and checking if the response of the command request is returned +with no failure. +When the response fails, the "cinder-api" service is considered in outage. +The time between the first response failure and the last response failure is +considered as service outage time. + +Process outage time is tested by checking the status of "cinder-api" processes +on the selected controller node. The time of "cinder-api" processes being +killed to the time of the "cinder-api" processes being recovered is the process +outage time. Process recovery is verified by checking the existence of +"cinder-api" processes. + +Test execution +'''''''''''''' + +* Test action 1: Connect to Node1 through SSH, and check that "cinder-api" + processes are running on Node1 +* Test action 2: Start two monitors: one for "cinder-api" process and the other + for "openstack volume list" command. + Each monitor will run as an independent process. +* Test action 3: Connect to Node1 through SSH, and then execute kill the + "cinder-api" processes +* Test action 4: Continuously measure service outage time from the monitor until + the service outage time is more than 5s +* Test action 5: Continuously measure process outage time from the monitor until + the process outage time is more than 30s + +Pass / fail criteria +'''''''''''''''''''' + +The process outage time is less than 30s. + +The service outage time is less than 5s. + +The cinder operations are carried out in above order and no errors occur. + +A negative result will be generated if the above is not met in completion. + +Post conditions +--------------- + +Restart the processes of "cinder-api" if they are not running. + + +------------------------------------------------------------ +Test Case 6 - Controller Node CPU Overload High Availability +------------------------------------------------------------ + +Short name +---------- + +opnfv.ha.tc006.cpu_overload + +Use case specification +---------------------- + +This test verifies the availability of services when one of the controller node +suffers from heavy CPU overload. When the CPU usage of the specified controller +node is up to 100%, which breaks down the OpenStack services on this node, +the Openstack services should continue to be available. This test case stresses +the CPU usage of a specific controller node to 100%, then checks whether all +services provided by the SUT are still available with the monitor tools. + +Test preconditions +------------------ + +There is more than one controller node, which is providing the "cinder-api", +"neutron-server", "glance-api" and "keystone" services for API end-point. +Denoted a controller node as Node1 in the following configuration. + +Basic test flow execution description and pass/fail criteria +------------------------------------------------------------ + +Methodology for monitoring high availability +'''''''''''''''''''''''''''''''''''''''''''' + +The high availability of related OpenStack service is evaluated by monitoring service +outage time + +Service outage time is tested by continuously executing "openstack router list", +"openstack stack list", "openstack volume list", "openstack image list" commands +in loop and checking if the response of the command request is returned with no +failure. +When the response fails, the related service is considered in outage. The time +between the first response failure and the last response failure is considered +as service outage time. + + +Methodology for stressing CPU usage +''''''''''''''''''''''''''''''''''' + +To evaluate the high availability of target OpenStack service under heavy CPU +load, the test case will first get the number of logical CPU cores on the +target controller node by shell command, then use the number to execute 'dd' +command to continuously copy from /dev/zero and output to /dev/null in loop. +The 'dd' operation only uses CPU, no I/O operation, which is ideal for +stressing the CPU usage. + +Since the 'dd' command is continuously executed and the CPU usage rate is +stressed to 100%, the scheduler will schedule each 'dd' command to be +processed on a different logical CPU core. Eventually to achieve all logical +CPU cores usage rate to 100%. + +Test execution +'''''''''''''' + +* Test action 1: Start four monitors: one for "openstack image list" command, + one for "openstack router list" command, one for "openstack stack list" + command and the last one for "openstack volume list" command. Each monitor + will run as an independent process. +* Test action 2: Connect to Node1 through SSH, and then stress all logical CPU + cores usage rate to 100% +* Test action 3: Continuously measure all the service outage times until they are + more than 5s +* Test action 4: Kill the process that stresses the CPU usage + +Pass / fail criteria +'''''''''''''''''''' + +All the service outage times are less than 5s. + +A negative result will be generated if the above is not met in completion. + +Post conditions +--------------- + +No impact on the SUT. + + +----------------------------------------------------------------- +Test Case 7 - Controller Node Disk I/O Overload High Availability +----------------------------------------------------------------- + +Short name +---------- + +opnfv.ha.tc007.disk_I/O_overload + +Use case specification +---------------------- + +This test verifies the high availability of control node. When the disk I/O of +the specific disk is overload, which breaks down the OpenStack services on this +node, the read and write services should continue to be available. This test +case blocks the disk I/O of the specific controller node, then checks whether +the services that need to read or write the disk of the controller node are +available with some monitor tools. + +Test preconditions +------------------ + +There is more than one controller node. +Denoted a controller node as Node1 in the following configuration. +The controller node has at least 20GB free disk space. + +Basic test flow execution description and pass/fail criteria +------------------------------------------------------------ + +Methodology for monitoring high availability +'''''''''''''''''''''''''''''''''''''''''''' + +The high availability of nova service is evaluated by monitoring +service outage time + +Service availability is tested by continuously executing +"openstack flavor list" command in loop and checking if the response of the +command request is returned with no failure. +When the response fails, the related service is considered in outage. + + +Methodology for stressing disk I/O +'''''''''''''''''''''''''''''''''' + +To evaluate the high availability of target OpenStack service under heavy I/O +load, the test case will execute shell command on the selected controller node +to continuously writing 8kb blocks to /test.dbf + +Test execution +'''''''''''''' + +* Test action 1: Connect to Node1 through SSH, and then stress disk I/O by + continuously writing 8kb blocks to /test.dbf +* Test action 2: Start a monitor: for "openstack flavor list" command +* Test action 3: Create a flavor called "test-001" +* Test action 4: Check whether the flavor "test-001" is created +* Test action 5: Continuously measure service outage time from the monitor + until the service outage time is more than 5s +* Test action 6: Stop writing to /test.dbf and delete file /test.dbf + +Pass / fail criteria +'''''''''''''''''''' + +The service outage time is less than 5s. + +The nova operations are carried out in above order and no errors occur. + +A negative result will be generated if the above is not met in completion. + +Post conditions +--------------- + +Delete flavor with "openstack flavor delete test-001". + +-------------------------------------------------------------------- +Test Case 8 - Controller Load Balance as a Service High Availability +-------------------------------------------------------------------- + +Short name +---------- + +opnfv.ha.tc008.load_balance_service_down + +Use case specification +---------------------- + +This test verifies the high availability of "load balancer" service. When +the "load balancer" service of a specified controller node is killed, whether +"load balancer" service on other controller nodes will work, and whether the +controller node will restart the "load balancer" service are checked. This +test case kills the processes of "load balancer" service on the selected +controller node, then checks whether the request of the related OpenStack +command is processed with no failure and whether the killed processes are +recovered. + +Test preconditions +------------------ + +There is more than one controller node, which is providing the "load balancer" +service for rest-api. Denoted as Node1 in the following configuration. + +Basic test flow execution description and pass/fail criteria +------------------------------------------------------------ + +Methodology for monitoring high availability +'''''''''''''''''''''''''''''''''''''''''''' + +The high availability of "load balancer" service is evaluated by monitoring +service outage time and process outage time + +Service outage time is tested by continuously executing "openstack image list" +command in loop and checking if the response of the command request is returned +with no failure. +When the response fails, the "load balancer" service is considered in outage. +The time between the first response failure and the last response failure is +considered as service outage time. + +Process outage time is tested by checking the status of processes of "load +balancer" service on the selected controller node. The time of those processes +being killed to the time of those processes being recovered is the process +outage time. +Process recovery is verified by checking the existence of processes of "load +balancer" service. + +Test execution +'''''''''''''' + +* Test action 1: Connect to Node1 through SSH, and check that processes of + "load balancer" service are running on Node1 +* Test action 2: Start two monitors: one for processes of "load balancer" + service and the other for "openstack image list" command. Each monitor will + run as an independent process +* Test action 3: Connect to Node1 through SSH, and then kill the processes of + "load balancer" service +* Test action 4: Continuously measure service outage time from the monitor until + the service outage time is more than 5s +* Test action 5: Continuously measure process outage time from the monitor until + the process outage time is more than 30s + +Pass / fail criteria +'''''''''''''''''''' + +The process outage time is less than 30s. + +The service outage time is less than 5s. + +A negative result will be generated if the above is not met in completion. + +Post conditions +--------------- +Restart the processes of "load balancer" if they are not running. + + + |