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| Section | Objectives |
|---|---|
| Implement security and compliance | - Secure CI/CD pipelines
|
| Develop and implement CI/CD pipelines | - Automate build, test, and deployment processes
|
| Implement site reliability engineering (SRE) practices | - Define and manage SLI, SLO, and SLA
|
| Optimize performance and continuous delivery | - System performance optimization
|
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NEW QUESTION # 147
You are troubleshooting a failed deployment in your CI/CD pipeline. The deployment logs indicate that the application container failed to start due to a missing environment variable. You need to identify the root cause and implement a solution within your CI/CD workflow to prevent this issue from recurring. What should you do?
Answer: B
Explanation:
Comprehensive and Detailed Explanation From General CI/CD Practices:
The issue is a runtime failure: the container fails to start due to a missing environment variable. This means the application expects an environment variable that wasn't provided when the container was run. The goal is to prevent this within the CI/CD workflow before it reaches deployment.
A; Run integration tests in the CI pipeline: Integration tests typically involve deploying the application (or a component of it) to a test environment and checking if its parts work together correctly. As part of this, the application would attempt to start up with its configured environment. An integration test suite could include a basic "smoke test" that simply verifies the application starts successfully. If a required environment variable is missing, the application would fail to start during this integration test phase in the CI pipeline, catching the error before a production deployment. Many integration test setups will try to mimic the target deployment environment including its configuration mechanisms (like environment variables).
B: Implement static code analysis in the CI pipeline: Static code analysis tools check the code for potential bugs, style issues, and security vulnerabilities without actually running it. While useful, they are unlikely to catch a missing environment variable configuration, as this is an issue with the deployment configuration or runtime environment, not typically a static property of the code itself (unless the code hardcodes an expectation that could be flagged, but that's less direct).
C: Use a canary deployment strategy: Canary deployments are a strategy for releasing software to production by first deploying to a small subset of users/servers. This helps limit the blast radius if an issue occurs in production. While a good practice for deployments, it doesn't prevent the issue from occurring in the first place; it just limits its impact once it does occur. The question asks to prevent recurrence within the CI/CD workflow (i.e., earlier).
D: Enable Cloud Audit Logs for the deployment: Cloud Audit Logs record administrative actions and accesses within Google Cloud. While the deployment logs already indicated the failure, audit logs provide information about who did what and when regarding the deployment configuration or execution. They are useful for post-mortem analysis of the deployment process itself but don't directly prevent the application from failing due to a misconfiguration like a missing environment variable during the build and test stages.
The most effective way to catch such an issue before a production deployment attempt is to have a test stage in the CI pipeline that attempts to run the application in an environment configured similarly to production, including expected environment variables. Integration tests (or even simpler smoke tests that check for successful startup) would achieve this.
Reference (Based on CI/CD best practices):
Continuous Integration (CI) principles emphasize automated testing at various levels (unit, integration, end-to- end) to catch issues early.
A common CI pipeline stage is to build the application, then deploy it to a test/staging environment and run integration tests. If the application fails to start in this test environment due to a missing environment variable, the pipeline would fail, preventing a flawed release from proceeding further.
"Integration tests verify that different parts of your application work together correctly. This can include interactions with databases, external services, and ensuring the application starts and operates as expected with its runtime configuration." Catching configuration errors like missing environment variables is a key benefit of running integration or smoke tests in a CI environment that mirrors production.
NEW QUESTION # 148
You need to define Service Level Objectives (SLOs) for a high-traffic multi-region web application. Customers expect the application to always be available and have fast response times. Customers are currently happy with the application performance and availability. Based on current measurement, you observe that the 90th percentile of latency is 120ms and the 95th percentile of latency is 275ms over a 28-day window. What latency SLO would you recommend to the team to publish?
Answer: B
NEW QUESTION # 149
Your company's security team needs to have read-only access to Data Access audit logs in the _Required bucket You want to provide your security team with the necessary permissions following the principle of least privilege and Google-recommended practices. What should you do?
Answer: B
Explanation:
The best option for providing your security team with the necessary permissions following the principle of least privilege and Google-recommended practices is to assign the roles/logging.privateLogViewer role to a group with all the security team members. The roles/logging.privateLogViewer role is a predefined role that grants read-only access to Data Access audit logs and other private logs in Cloud Logging. A group is a collection of users that can be assigned roles and permissions as a single unit. You can assign the roles/logging.privateLogViewer role to a group with all the security team members by using IAM policies. This way, you can provide your security team with the minimum level of access they need to view Data Access audit logs in the _Required bucket.
NEW QUESTION # 150
Your team is designing a new application for deployment both inside and outside Google Cloud Platform (GCP). You need to collect detailed metrics such as system resource utilization. You want to use centralized GCP services while minimizing the amount of work required to set up this collection system. What should you do?
Answer: D
NEW QUESTION # 151
You are building and deploying a microservice on Cloud Run for your organization Your service is used by many applications internally You are deploying a new release, and you need to test the new version extensively in the staging and production environments You must minimize user and developer impact. What should you do?
Answer: C
Explanation:
The best option for deploying a new release of your microservice on Cloud Run and testing it extensively in the staging and production environments with minimal user and developer impact is to deploy the new version of the service to the staging environment with a new-release tag without serving traffic, test the new-release version, and if the test passes, gradually roll out this tagged version. A tag is a label that you can assign to a revision of your service on Cloud Run. You can use tags to create different versions of your service without affecting traffic. You can also use tags to gradually roll out traffic to a new version of your service by using traffic splitting. This way, you can test your new release extensively in both environments and minimize user and developer impact.
NEW QUESTION # 152
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