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diff --git a/docs/release/configguide/jmeter_config_guide.rst b/docs/release/configguide/jmeter_config_guide.rst new file mode 100644 index 0000000..de1d2f5 --- /dev/null +++ b/docs/release/configguide/jmeter_config_guide.rst @@ -0,0 +1,298 @@ +.. This work is licensed under a Creative Commons Attribution 4.0 International License. +.. http://creativecommons.org/licenses/by/4.0 +.. SPDX-License-Identifier CC-BY-4.0 +.. (c) Authors of Clover + +.. _jmeter_config_guide: + +======================================= +JMeter Validation Configuration Guide +======================================= + +This document provides a guide to use the JMeter validation service, which is introduced in +the Clover Gambia release. + +Overview +========= + +Apache JMeter is a mature, open source application that supports web client emulation. Its +functionality has been integrated into the Clover project to allow various CI validations +and performance tests to be performed. The system under test can either be REST services/APIs +directly or a set of L7 network services. In the latter scenario, Clover nginx servers may +be employed as an endpoint to allow traffic to be sent end-to-end across a service chain. + +The Clover JMeter integration is packaged as docker containers with manifests to deploy +in a Kubernetes (k8s) cluster. The Clover CLI (**cloverctl**) can be used to configure and +control the JMeter service within the k8s cluster via **clover-controller**. + +The Clover JMeter integration has the following attributes: + + * **Master/Slave Architecture:** uses the native master/slave implementation of JMeter. The master + and slaves have distinct OPNFV docker containers for rapid deployment and usage. Slaves allow + the scale of the emulation to be increased linearly for performance testing. However, for + functional validations and modest scale, the master may be employed without any slaves. + + * **Test Creation & Control:** JMeter makes use of a rich XML-based test plan. While this offers + a plethora of configurable options, it can be daunting for a beginner user to edit directly. + Clover provides an abstracted yaml syntax exposing a subset of the available configuration + parameters. JMeter test plans are generated on the master and tests can be started from + **cloverctl** CLI. + + * **Result Collection:** summary log results and detailed per-request results can be retrieved + from the JMeter master during and after tests from the **cloverctl** or from a REST API exposed + via **clover-controller**. + +.. image:: imgs/jmeter_overview.png + :align: center + :scale: 100% + +Deploying Clover JMeter service +=============================== + +Prerequisites +------------- + +The following assumptions must be met before continuing on to deployment: + + * Installation of Docker has already been performed. It's preferable to install Docker CE. + * Installation of k8s in a single-node or multi-node cluster. + * Clover CLI (**cloverctl**) has been downloaded and setup. Instructions to deploy can be found + at :ref:`controller_services_controller` + * The **clover-controller** service is deployed in the k8s cluster the validation services will + be deployed in. Instructions to deploy can be found at :ref:`controller_services_controller`. + +Deploy with Clover CLI +----------------------- + +The easiest way to deploy Clover JMeter validation services into your k8s cluster is to use the +**cloverctl** CLI using the following command: + +.. code-block:: bash + + $ cloverctl create system validation + +Container images with the Gambia release tag will pulled if the tag is unspecified. The release +tag is **opnfv-7.0.0** for the Gambia release. To deploy the latest containers from master, use +the command shown below:: + + $ cloverctl create system validation -t latest + +The Clover CLI will add master/slave pods to the k8s cluster in the default namespace. + +The JMeter master/slave docker images will automatically be pulled from the OPNFV public +Dockerhub registry. Deployments and respective services will be created with three slave +replica pods added with the **clover-jmeter-slave** prefix. A single master pod will be +created with the **clover-jmeter-master** prefix. + +Deploy from source +------------------ + +To continue to deploy from the source code, clone the Clover git repository and navigate +within to the directory, as shown below: + +.. code-block:: bash + + $ git clone https://gerrit.opnfv.org/gerrit/clover + $ cd clover/clover/tools/jmeter/yaml + $ git checkout stable/gambia + +To deploy the master use the following two commands, which will create a manifest with +the Gambia release tags and creates the deployment in the k8s cluster:: + + $ python render_master.py --image_tag=opnfv-7.0.0 --image_path=opnfv + $ kubectl create -f clover-jmeter-master.yaml + +JMeter can be injected into an Istio service mesh. To deploy in the default +namespace within the service mesh, use the following command for manual +sidecar injection:: + + $ istioctl kube-inject -f clover-jmeter-master.yaml | kubectl apply -f - + +**Note, when injecting JMeter into the service mesh, only the master will function for +the Clover integration, as master-slave communication is known not to function with the Java +RMI API. Ensure 'istioctl' is in your path for the above command.** + +To deploy slave replicas, render the manifest yaml and create in k8s adjusting the +``--replica_count`` value for the number of slave pods desired:: + + $ python render_slave.py --image_tag=opnfv-7.0.0 --image_path=opnfv --replica_count=3 + $ kubectl create -f clover-jmeter-slave.yaml + +Verifying the deployment +------------------------ + +To verify the validation services are deployed, ensure the following pods are present +with the command below: + +.. code-block:: bash + + $ kubectl get pod --all-namespaces + +The listing below must include the following pods assuming deployment in the default +namespace: + +.. code-block:: bash + + NAMESPACE NAME READY STATUS + default clover-jmeter-master-688677c96f-8nnnr 1/1 Running + default clover-jmeter-slave-7f9695d56-8xh67 1/1 Running + default clover-jmeter-slave-7f9695d56-fmpz5 1/1 Running + default clover-jmeter-slave-7f9695d56-kg76s 1/1 Running + default clover-jmeter-slave-7f9695d56-qfgqj 1/1 Running + +Using JMeter Validation +======================= + +Creating a test plan +-------------------- + +To employ a test plan that can be used against the :ref:`sdc_config_guide` sample, navigate to + cloverctl yaml directory and use the sample named 'jmeter_testplan.yaml', which is shown below. + +.. code-block:: bash + + load_spec: + num_threads: 5 + loops: 2 + ramp_time: 60 + duration: 80 + url_list: + - name: url1 + url: http://proxy-access-control.default:9180 + method: GET + user-agent: chrome + - name: url2 + url: http://proxy-access-control.default:9180 + method: GET + user-agent: safari + +The composition of the yaml file breaks down as follows: + * ``load_spec`` section of the yaml defines the load profile of the test. + * `num_threads`` parameter defines the maximum number of clients/users the test will emulate. + * ``ramp_time`` determines the rate at which threads/users will be setup. + * ``loop`` parameter reruns the same test and can be set to 0 to loop forever. + * ``duration`` parameter is used to limit the test run time and be used as a hard cutoff when + using loop forever. + * ``url_list`` section of the yaml defines a set of HTTP requests that each user will perform. + It includes the request URL that is given a name (used as reference in detailed per-request + results) and the HTTP method to use (ex. GET, POST). The ``user-agent`` parameter allows this + HTTP header to be specified per request and can be used to emulate browsers and devices. + +The ``url`` syntax is <domain or IP>:<port #>. The colon port number may be omitted if port 80 +is intended. + +The test plan yaml is an abstraction of the JMeter XML syntax (uses .jmx extension) and can be +pushed to the master using the **cloverctl** CLI with the following command: + +.. code-block:: bash + + $ cloverctl create testplan –f jmeter_testplan.yaml + +The test plan can now be executed and will automatically be distributed to available JMeter slaves. + +Starting the test +----------------- + +Once a test plan has been created on the JMeter master, a test can be started for the test plan +with the following command: + +.. code-block:: bash + + $ cloverctl start testplan + +The test will be executed from the **clover-jmeter-master** pod, whereby HTTP requests will +originate directly from the master. The number of aggregate threads/users and request rates +can be scaled by increasing the thread count or decreasing the ramp time respectively in the +test plan yaml. However, the scale of the test can also be controlled by adding slaves to the +test. When slaves are employed, the master will only be used to control slaves and will not be +a source of traffic. Each slave pod will execute the test plan in its entirety. + +To execute tests using slaves, add the flag '-s' to the start command from the Clover CLI as shown +below: + +.. code-block:: bash + + $ cloverctl start testplan –s <slave count> + +The **clover-jmeter-slave** pods must be deployed in advance before executing the above command. If +the steps outlined in section `Deploy with Clover CLI`_ have been followed, three slaves will +have already been deployed. + +Retrieving Results +------------------ + +Results for the test can be obtained by executing the following command: + +.. code-block:: bash + + $ cloverctl get testresult + $ cloverctl get testresult log + +The bottom of the log will display a summary of the test results, as shown below:: + + 3 in 00:00:00 = 111.1/s Avg: 7 Min: 6 Max: 8 Err: 0 (0.00%) + 20 in 00:00:48 = 0.4/s Avg: 10 Min: 6 Max: 31 Err: 0 (0.00%) + +Each row of the summary table is a snapshot in time with the final numbers in the last row. +In this example, 20 requests (5 users/threads x 2 URLs) x loops) were sent successfully +with no HTTP responses with invalid/error (4xx/5xx) status codes. Longer tests will produce +a larger number of snapshot rows. Minimum, maximum and average response times are output per +snapshot. + +To obtain detailed, per-request results use the ``detail`` option, as shown below:: + + $ cloverctl get testresult detail + + 1541567388622,14,url1,200,OK,ThreadGroup 1-4,text,true,,843,0,1,1,14,0,0 + 1541567388637,8,url2,200,OK,ThreadGroup 1-4,text,true,,843,0,1,1,8,0,0 + 1541567388646,6,url1,200,OK,ThreadGroup 1-4,text,true,,843,0,1,1,6,0,0 + 1541567388653,7,url2,200,OK,ThreadGroup 1-4,text,true,,843,0,1,1,7,0,0 + 1541567400622,12,url1,200,OK,ThreadGroup 1-5,text,true,,843,0,1,1,12,0,0 + 1541567400637,8,url2,200,OK,ThreadGroup 1-5,text,true,,843,0,1,1,8,0,0 + 1541567400645,7,url1,200,OK,ThreadGroup 1-5,text,true,,843,0,1,1,7,0,0 + 1541567400653,6,url2,200,OK,ThreadGroup 1-5,text,true,,843,0,1,1,6,0,0 + +Columns are broken down on the following fields: + * timeStamp, elapsed, label, responseCode, responseMessage, threadName, dataType, success + * failureMessage bytes, sentBytes, grpThreads, allThreads, Latency, IdleTime, Connect + +``elapsed`` or ``Latency`` values are in milliseconds. + +Uninstall from Kubernetes environment +===================================== + +Delete with Clover CLI +----------------------- + +When you're finished working with JMeter validation services, you can uninstall it with the +following command: + +.. code-block:: bash + + $ cloverctl delete system validation + +The command above will remove the clover-jmeter-master and clover-jmeter-slave deployment +and service resources from the current k8s context. + +Delete from source +------------------ + +The JMeter validation services can be uninstalled from the source code using the commands below: + +.. code-block:: bash + + $ cd clover/samples/scenarios + $ kubectl delete -f clover-jmeter-master.yaml + $ kubectl delete -f clover-jmeter-slave.yaml + +Uninstall from Docker environment +================================= + +The OPNFV docker images can be removed with the following commands from nodes +in the k8s cluster. + +.. code-block:: bash + + $ docker rmi opnfv/clover-jmeter-master + $ docker rmi opnfv/clover-jmeter-slave + $ docker rmi opnfv/clover-controller |