Data Center App Performance Toolkit User Guide For Bitbucket

This document walks you through the process of testing your app on Bitbucket using the Data Center App Performance Toolkit. These instructions focus on producing the required performance and scale benchmarks for your Data Center app.

In this document, we cover the use of the Data Center App Performance Toolkit on two types of environments:

Development environment: Bitbucket Data Center environment for a test run of Data Center App Performance Toolkit and development of app-specific actions.

1. Set up a development environment Bitbucket Data Center on AWS.
2. Run toolkit on the development environment locally.
3. Develop and test app-specific actions locally.

Enterprise-scale environment: Bitbucket Data Center environment used to generate Data Center App Performance Toolkit test results for the Marketplace approval process.

4. Set up an enterprise-scale environment Bitbucket Data Center on AWS.
5. Set up an execution environment for the toolkit.
6. Running the test scenarios from execution environment against enterprise-scale Bitbucket Data Center.

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Development environment

Running the tests in a development environment helps familiarize you with the toolkit. It'll also provide you with a lightweight and less expensive environment for developing app-specific actions. Once you're ready to generate test results for the Marketplace Data Center Apps Approval process, run the toolkit in an enterprise-scale environment.

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• Checkout release 7.1.0 of the dc-app-performance-toolkit repository:

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  git checkout release-7.1.0
  

• Use the docker container with the 7.1.0 release tag to run performance tests from docker:

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  cd dc-app-performance-toolkit
  docker pull atlassian/dcapt:7.1.0
  docker run --shm-size=4g -v "$PWD:/dc-app-performance-toolkit" atlassian/dcapt:7.1.0 bitbucket.yml
  

• The corresponding version of the user guide could be found in the dc-app-performance-toolkit/docs folder or by this link.

• If specific version of the Bitbucket DC is required, please contact support in the community Slack.

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1. Setting up Bitbucket Data Center development environment

AWS cost estimation for the development environment

To reduce costs, we recommend you to keep your deployment up and running only during the performance runs. AWS Bitbucket Data Center development environment infrastructure costs about 20 - 40$ per working week depending on such factors like region, instance type, deployment type of DB, and other.

Setup Bitbucket Data Center development environment on k8s.

Below process describes how to install low-tier Bitbucket DC with "small" dataset included:

1. Create access keys for IAM user.

   Do not use root user credentials for cluster creation. Instead, create an admin user.

2. Navigate to dc-app-performance-toolkit/app/util/k8s folder.

3. Set AWS access keys created in step1 in aws_envs file:

   • AWS_ACCESS_KEY_ID
   • AWS_SECRET_ACCESS_KEY

4. Set required variables in dcapt-small.tfvars file:

   • environment_name - any name for you environment, e.g. dcapt-bitbucket-small

   • products - bitbucket

   • bitbucket_license - one-liner of valid bitbucket license without spaces and new line symbols

   • region - AWS region for deployment. Do not change default region (us-east-2). If specific region is required, contact support.

   • instance_types - ["t3.2xlarge"]

   New trial license could be generated on my atlassian. Use BX02-9YO1-IN86-LO5G Server ID for generation.

5. Optional variables to override:

   • bitbucket_version_tag - Bitbucket version to deploy. Supported versions see in README.md.
   • Make sure that the Bitbucket version specified in bitbucket_version_tag is consistent with the EBS and RDS snapshot versions. Additionally, ensure that corresponding version snapshot lines are uncommented.

6. From local terminal (Git bash terminal for Windows) start the installation (~20 min):

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   docker run --env-file aws_envs \
   -v "$PWD/dcapt-small.tfvars:/data-center-terraform/config.tfvars" \
   -v "$PWD/.terraform:/data-center-terraform/.terraform" \
   -v "$PWD/logs:/data-center-terraform/logs" \
   -it atlassianlabs/terraform ./install.sh -c config.tfvars
   

7. Copy product URL from the console output. Product url should look like http://a1234-54321.us-east-2.elb.amazonaws.com/bitbucket.

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2. Run toolkit on the development environment locally

1. Clone Data Center App Performance Toolkit locally.

2. Follow the README.md instructions to set up toolkit locally.

3. Navigate to dc-app-performance-toolkit/app folder.

4. Open the bitbucket.yml file and fill in the following variables:

   • application_hostname: your_dc_bitbucket_instance_hostname without protocol.
   • application_protocol: http or https.
   • application_port: for HTTP - 80, for HTTPS - 443, 8080, 1990 or your instance-specific port.
   • secure: True or False. Default value is True. Set False to allow insecure connections, e.g. when using self-signed SSL certificate.
   • application_postfix: /bitbucket - default postfix value for TerraForm deployment url like http://a1234-54321.us-east-2.elb.amazonaws.com/bitbucket
   • admin_login: admin user username.
   • admin_password: admin user password.
   • load_executor: executor for load tests - jmeter
   • concurrency: 1 - number of concurrent JMeter users.
   • test_duration: 5m - duration of the performance run.
   • ramp-up: 1s - amount of time it will take JMeter to add all test users to test execution.
   • total_actions_per_hour: 3270 - number of total JMeter actions per hour.
   • WEBDRIVER_VISIBLE: visibility of Chrome browser during selenium execution (False is by default).

5. Run bzt.

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   bzt bitbucket.yml
   

6. Review the resulting table in the console log. All JMeter and Selenium actions should have 95+% success rate.
   In case some actions does not have 95+% success rate refer to the following logs in dc-app-performance-toolkit/app/results/bitbucket/YY-MM-DD-hh-mm-ss folder:

   • results_summary.log: detailed run summary
   • results.csv: aggregated .csv file with all actions and timings
   • bzt.log: logs of the Taurus tool execution
   • jmeter.*: logs of the JMeter tool execution
   • pytest.*: logs of Pytest-Selenium execution

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3. Develop and test app-specific action locally

Data Center App Performance Toolkit has its own set of default test actions for Bitbucket Data Center: JMeter and Selenium for load and UI tests respectively.

App-specific action - action (performance test) you have to develop to cover main use cases of your application. Performance test should focus on the common usage of your application and not to cover all possible functionality of your app. For example, application setup screen or other one-time use cases are out of scope of performance testing.

1. Define main use case of your app. Usually it is one or two main app use cases.
2. Your app adds new UI elements in Bitbucket Data Center - Selenium app-specific action has to be developed.
3. Your app introduces new endpoint or extensively calls existing Bitbucket Data Center API - JMeter app-specific actions has to be developed.

Example of app-specific Selenium action development

You develop an app that adds some additional fields to specific types of Bitbucket issues. In this case, you should develop Selenium app-specific action:

1. Extend example of app-specific action in dc-app-performance-toolkit/app/extension/bitbucket/extension_ui.py.
   Code example. So, our test has to open app-specific issues and measure time to load of this app-specific issues.
2. If you need to run app_specific_action as specific user uncomment app_specific_user_login function in code example. Note, that in this case test_1_selenium_custom_action should follow just before test_2_selenium_z_log_out action.
3. In dc-app-performance-toolkit/app/selenium_ui/bitbucket_ui.py, review and uncomment the following block of code to make newly created app-specific actions executed:

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# def test_1_selenium_custom_action(webdriver, datasets, screen_shots):
#     app_specific_action(webdriver, datasets)

4. Run toolkit with bzt bitbucket.yml command to ensure that all Selenium actions including app_specific_action are successful.

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Enterprise-scale environment

After adding your custom app-specific actions, you should now be ready to run the required tests for the Marketplace Data Center Apps Approval process. To do this, you'll need an enterprise-scale environment.

4. Setting up Bitbucket Data Center enterprise-scale environment with "large" dataset

EC2 CPU Limit

The installation of 4-nodes Bitbucket requires 48 CPU Cores. Make sure that the current EC2 CPU limit is set to higher number of CPU Cores. AWS Service Quotas service shows the limit for All Standard Spot Instance Requests. Applied quota value is the current CPU limit in the specific region.

The limit can be increased by creating AWS Support ticket. To request the limit increase fill in Amazon EC2 Limit increase request form:

AWS cost estimation

AWS Pricing Calculator provides an estimate of usage charges for AWS services based on certain information you provide. Monthly charges will be based on your actual usage of AWS services, and may vary from the estimates the Calculator has provided.

*The prices below are approximate and may vary depending on factors such as (region, instance type, deployment type of DB, etc.)

Setup Bitbucket Data Center enterprise-scale environment on k8s.

Data dimensions and values for an enterprise-scale dataset are listed and described in the following table.

Below process describes how to install enterprise-scale Bitbucket DC with "large" dataset included:

1. Create access keys for IAM user.

   Do not use root user credentials for cluster creation. Instead, create an admin user.

2. Navigate to dc-app-performance-toolkit/app/util/k8s folder.

3. Set AWS access keys created in step1 in aws_envs file:

   • AWS_ACCESS_KEY_ID
   • AWS_SECRET_ACCESS_KEY

4. Set required variables in dcapt.tfvars file:

   • environment_name - any name for you environment, e.g. dcapt-bitbucket-large
   • products - bitbucket
   • bitbucket_license - one-liner of valid bitbucket license without spaces and new line symbols
   • region - AWS region for deployment. Do not change default region (us-east-2). If specific region is required, contact support.
   • instance_types - ["m5.4xlarge"]

5. Optional variables to override:

   • bitbucket_version_tag - Bitbucket version to deploy. Supported versions see in README.md.
   • Make sure that the Bitbucket version specified in bitbucket_version_tag is consistent with the EBS and RDS snapshot versions. Additionally, ensure that corresponding version snapshot lines are uncommented.

6. From local terminal (Git bash terminal for Windows) start the installation (~40min):

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   docker run --env-file aws_envs \
   -v "$PWD/dcapt.tfvars:/data-center-terraform/config.tfvars" \
   -v "$PWD/.terraform:/data-center-terraform/.terraform" \
   -v "$PWD/logs:/data-center-terraform/logs" \
   -it atlassianlabs/terraform ./install.sh -c config.tfvars
   

7. Copy product URL from the console output. Product url should look like http://a1234-54321.us-east-2.elb.amazonaws.com/bitbucket.

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5. Setting up an execution environment

For generating performance results suitable for Marketplace approval process use dedicated execution environment. This is a separate AWS EC2 instance to run the toolkit from. Running the toolkit from a dedicated instance but not from a local machine eliminates network fluctuations and guarantees stable CPU and memory performance.

1. Go to GitHub and create a fork of dc-app-performance-toolkit.
2. Clone the fork locally, then edit the bitbucket.yml configuration file. Set enterprise-scale Bitbucket Data Center parameters:

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    application_hostname: test_bitbucket_instance.atlassian.com   # Bitbucket DC hostname without protocol and port e.g. test-bitbucket.atlassian.com or localhost
    application_protocol: http        # http or https
    application_port: 80              # 80, 443, 8080, 7990 etc
    secure: True                      # Set False to allow insecure connections, e.g. when using self-signed SSL certificate
    application_postfix:  /bitbucket  # e.g. /bitbucket for TerraForm deployment url like `http://a1234-54321.us-east-2.elb.amazonaws.com/bitbucket`. Leave this value blank for url without postfix.
    admin_login: admin
    admin_password: admin
    load_executor: jmeter             # only jmeter executor is supported
    concurrency: 20                   # number of concurrent virtual users for jmeter scenario
    test_duration: 50m
    ramp-up: 10m                      # time to spin all concurrent users
    total_actions_per_hour: 32700     # number of total JMeter actions per hour

1. Push your changes to the forked repository.

2. Launch AWS EC2 instance.

   • OS: select from Quick Start Ubuntu Server 22.04 LTS.
   • Instance type: c5.2xlarge
   • Storage size: 30 GiB

3. Connect to the instance using SSH or the AWS Systems Manager Sessions Manager.

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   ssh -i path_to_pem_file ubuntu@INSTANCE_PUBLIC_IP
   

4. Install Docker. Setup manage Docker as a non-root user.

5. Clone forked repository.

You'll need to run the toolkit for each test scenario in the next section.

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6. Running the test scenarios from execution environment against enterprise-scale Bitbucket Data Center

Using the Data Center App Performance Toolkit for Performance and scale testing your Data Center app involves two test scenarios:

• Performance regression
• Scalability testing

Each scenario will involve multiple test runs. The following subsections explain both in greater detail.

Scenario 1: Performance regression

This scenario helps to identify basic performance issues without a need to spin up a multi-node Bitbucket DC. Make sure the app does not have any performance impact when it is not exercised.

Run 1 (~1 hour)

To receive performance baseline results without an app installed:

1. Use SSH to connect to execution environment.

2. Run toolkit with docker from the execution environment instance:

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   cd dc-app-performance-toolkit
   docker run --pull=always --shm-size=4g -v "$PWD:/dc-app-performance-toolkit" atlassian/dcapt bitbucket.yml
   

3. View the following main results of the run in the dc-app-performance-toolkit/app/results/bitbucket/YY-MM-DD-hh-mm-ss folder:

   • results_summary.log: detailed run summary
   • results.csv: aggregated .csv file with all actions and timings
   • bzt.log: logs of the Taurus tool execution
   • jmeter.*: logs of the JMeter tool execution
   • pytest.*: logs of Pytest-Selenium execution

Run 2 (~1 hour)

To receive performance results with an app installed:

1. Install the app you want to test.

2. Setup app license.

3. Run toolkit with docker from the execution environment instance:

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   cd dc-app-performance-toolkit
   docker run --pull=always --shm-size=4g -v "$PWD:/dc-app-performance-toolkit" atlassian/dcapt bitbucket.yml
   

Generating a performance regression report

To generate a performance regression report:

1. Use SSH to connect to execution environment.
2. Install and activate the virtualenv as described in dc-app-performance-toolkit/README.md
3. Allow current user (for execution environment default user is ubuntu) to access Docker generated reports:

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   sudo chown -R ubuntu:ubuntu /home/ubuntu/dc-app-performance-toolkit/app/results
   

4. Navigate to the dc-app-performance-toolkit/app/reports_generation folder.
5. Edit the performance_profile.yml file:
   • Under runName: "without app", in the fullPath key, insert the full path to results directory of Run 1.
   • Under runName: "with app", in the fullPath key, insert the full path to results directory of Run 2.
6. Run the following command:

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   python csv_chart_generator.py performance_profile.yml
   

7. In the dc-app-performance-toolkit/app/results/reports/YY-MM-DD-hh-mm-ss folder, view the .csv file (with consolidated scenario results), the .png chart file and performance scenario summary report.

Analyzing report

Use scp command to copy report artifacts from execution env to local drive:

1. From local machine terminal (Git bash terminal for Windows) run command:

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   export EXEC_ENV_PUBLIC_IP=execution_environment_ec2_instance_public_ip
   scp -r -i path_to_exec_env_pem ubuntu@$EXEC_ENV_PUBLIC_IP:/home/ubuntu/dc-app-performance-toolkit/app/results/reports ./reports
   

2. Once completed, in the ./reports folder you will be able to review the action timings with and without your app to see its impact on the performance of the instance. If you see an impact (>20%) on any action timing, we recommend taking a look into the app implementation to understand the root cause of this delta.

Scenario 2: Scalability testing

The purpose of scalability testing is to reflect the impact on the customer experience when operating across multiple nodes. For this, you have to run scale testing on your app.

For many apps and extensions to Atlassian products, there should not be a significant performance difference between operating on a single node or across many nodes in Bitbucket DC deployment. To demonstrate performance impacts of operating your app at scale, we recommend testing your Bitbucket DC app in a cluster.

Run 3 (~1 hour)

To receive scalability benchmark results for one-node Bitbucket DC with app-specific actions:

1. Apply app-specific code changes to a new branch of forked repo.

2. Use SSH to connect to execution environment.

3. Pull cloned fork repo branch with app-specific actions.

4. Run toolkit with docker from the execution environment instance:

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   cd dc-app-performance-toolkit
   docker run --pull=always --shm-size=4g -v "$PWD:/dc-app-performance-toolkit" atlassian/dcapt bitbucket.yml
   

Run 4 (~1 hour)

To receive scalability benchmark results for two-node Bitbucket DC with app-specific actions:

1. Navigate to dc-app-performance-toolkit/app/util/k8s folder.
2. Open dcapt.tfvars file and set bitbucket_replica_count value to 2.
3. From local terminal (Git bash terminal for Windows) start scaling (~20 min):

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   docker run --pull=always --env-file aws_envs \
   -v "$PWD/dcapt.tfvars:/data-center-terraform/config.tfvars" \
   -v "$PWD/.terraform:/data-center-terraform/.terraform" \
   -v "$PWD/logs:/data-center-terraform/logs" \
   -it atlassianlabs/terraform ./install.sh -c config.tfvars
   

4. Use SSH to connect to execution environment.
5. Run toolkit with docker from the execution environment instance:

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   cd dc-app-performance-toolkit
   docker run --pull=always --shm-size=4g -v "$PWD:/dc-app-performance-toolkit" atlassian/dcapt bitbucket.yml
   

Run 5 (~1 hour)

To receive scalability benchmark results for four-node Bitbucket DC with app-specific actions:

1. Scale your Bitbucket Data Center deployment to 4 nodes as described in Run 4.

2. Run toolkit with docker from the execution environment instance:

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   cd dc-app-performance-toolkit
   docker run --pull=always --shm-size=4g -v "$PWD:/dc-app-performance-toolkit" atlassian/dcapt bitbucket.yml
   

Generating a report for scalability scenario

To generate a scalability report:

1. Use SSH to connect to execution environment.
2. Allow current user (for execution environment default user is ubuntu) to access Docker generated reports:

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   sudo chown -R ubuntu:ubuntu /home/ubuntu/dc-app-performance-toolkit/app/results
   

3. Navigate to the dc-app-performance-toolkit/app/reports_generation folder.
4. Edit the scale_profile.yml file:
   • For runName: "1 Node", in the fullPath key, insert the full path to results directory of Run 3.
   • For runName: "2 Nodes", in the fullPath key, insert the full path to results directory of Run 4.
   • For runName: "4 Nodes", in the fullPath key, insert the full path to results directory of Run 5.
5. Run the following command from the virtualenv (as described in dc-app-performance-toolkit/README.md):

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   python csv_chart_generator.py scale_profile.yml
   

6. In the dc-app-performance-toolkit/app/results/reports/YY-MM-DD-hh-mm-ss folder, view the .csv file (with consolidated scenario results), the .png chart file and summary report.

Analyzing report

Use scp command to copy report artifacts from execution env to local drive:

1. From local terminal (Git bash terminal for Windows) run command:

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   export EXEC_ENV_PUBLIC_IP=execution_environment_ec2_instance_public_ip
   scp -r -i path_to_exec_env_pem ubuntu@$EXEC_ENV_PUBLIC_IP:/home/ubuntu/dc-app-performance-toolkit/app/results/reports ./reports
   

2. Once completed, in the ./reports folder, you will be able to review action timings on Bitbucket Data Center with different numbers of nodes. If you see a significant variation in any action timings between configurations, we recommend taking a look into the app implementation to understand the root cause of this delta.

Attaching testing results to ECOHELP ticket

1. Make sure you have two reports folders: one with performance profile and second with scale profile results. Each folder should have profile.csv, profile.png, profile_summary.log and profile run result archives. Archives should contain all raw data created during the run: bzt.log, selenium/jmeter/locust logs, .csv and .yml files, etc.
2. Attach two reports folders to your ECOHELP ticket.

Support

For Terraform deploy related questions see Troubleshooting tipspage.

If the installation script fails on installing Helm release or any other reason, collect the logs, zip and share to community Slack #data-center-app-performance-toolkit channel. For instructions on how to collect detailed logs, see Collect detailed k8s logs.

In case of the above problem or any other technical questions, issues with DC Apps Performance Toolkit, contact us for support in the community Slack #data-center-app-performance-toolkit channel.