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How do you troubleshoot and resolve issues during CD releases and rollbacks?

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Continuous Delivery (CD) is a software development practice that aims to deliver software updates frequently and reliably. CD relies on automation tools to release and rollback changes to different environments, such as development, testing, staging, and production. However, automation is not a magic bullet that guarantees flawless releases and rollbacks. Sometimes, things can go wrong, and you need to troubleshoot and resolve issues quickly and efficiently. In this article, we will discuss some common challenges and best practices for CD release and rollback automation.

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1 Release automation tools

Release automation tools are software applications that help you automate the process of deploying software changes to different environments, as well as orchestrate complex workflows, manage dependencies, track progress, and enforce quality standards. Examples of these tools are Jenkins, Bamboo, Octopus Deploy, and Spinnaker. Although these tools can help you achieve faster and more consistent releases, they also come with some challenges such as configuring and maintaining the tools and their integrations with other systems, testing and verifying the tools and their outputs, handling errors and exceptions during the release process, and monitoring and auditing the release activities and outcomes.

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2 Rollback automation tools

Rollback automation tools are software applications that can help you undo or revert software changes, restore the previous state of the system, recover data, and minimize downtime. Examples of such tools include CodeDeploy, Rollbar, LaunchDarkly, and Flagr. While these tools can help mitigate the impact of faulty or unwanted releases, they also introduce some challenges such as deciding when and how to trigger a rollback, testing and verifying the rollback process and its effects, handling dependencies and conflicts between changes, and communicating and coordinating the rollback with stakeholders and users.

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Jim Gumbley

Director - Business Information Security and Technology Architecture
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Many experienced practitioners would argue that while 'rollback' or 'undo' sounds like an attractive route out of an issue caused by a deployment, in realistic scenarios you almost always to have fix forward. This means making a change which resolves the issue and then pushing this new version. Rolling back to the self-same earlier version is often problematic as it can rollback other features or may not account for complex issues with data or dependency state in a distributed system.

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3 Troubleshooting and resolving issues

Troubleshooting and resolving issues during CD releases and rollbacks is a critical skill that requires technical knowledge, analytical thinking, and problem-solving abilities. To troubleshoot an issue, you must first identify the root cause and scope of the issue, then gather data and logs to analyze. Isolating and reproducing the issue in a controlled environment is also important, as well as applying fixes or workarounds to the issue. Once a solution is found, it should be tested and validated, followed by documenting and reporting the issue and its resolution.

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Jim Gumbley

Director - Business Information Security and Technology Architecture
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Once you have isolated the issue you should always reproduce it in a test environment. Showing that the same issue occurs in another environment that is not production demonstrates you have really isolated and understood the issue.

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4 Best practices for CD release and rollback automation

To avoid or minimize issues during CD releases and rollbacks, it's important to adopt a DevOps culture that promotes collaboration, feedback, and continuous improvement. Additionally, you should implement a release strategy, use a version control system, apply a testing strategy, use a feature flagging system, implement a monitoring and alerting system, establish a rollback strategy, and create a backup and recovery plan. These practices will ensure the availability and integrity of the data while tracking and managing the changes to the codebase.

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How do you troubleshoot and resolve issues during CD releases and rollbacks?

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1 Release automation tools

2 Rollback automation tools

3 Troubleshooting and resolving issues

4 Best practices for CD release and rollback automation

Continuous Delivery

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