DevOps Shack is here to help you resolve some of the most common errors encountered in Azure Pipelines. Below, we explain the root causes (RCA) and solutions for 53 frequent pipeline and deployment issues. Let’s dive in!
1. Agent Job Timed Out
Solution: Increase job timeout and optimize pipeline steps. RCA: Task execution exceeded the default timeout due to complex builds or insufficient agent resources.
2. Unable to Resolve Dependency
Solution: Update dependencies or clear cache in pipeline tasks. RCA: Version conflicts in dependencies or missing updates in the pipeline.
3. Repository is Not Authorized
Solution: Reauthorize the repository or verify service connection permissions. RCA: Token expired or incorrect access token permissions.
4. Unable to Locate a Suitable Build Agent
Solution: Check agent pool availability or adjust parallelism limits. RCA: No free agents due to concurrency limits or demand mismatches.
5. Docker Build Failed
Solution: Verify Dockerfile syntax, context path, and agent Docker support. RCA: Incorrect Dockerfile configuration or unsupported agent environment.
6. Pipeline Cannot Access Secrets
Solution: Reconfigure the variable group or service connection for secrets. RCA: Expired or misconfigured Azure Key Vault or service connections.
7. 403 Forbidden: Push is Not Permitted
Solution: Update permissions or reconfigure branch protection rules. RCA: Branch policies or insufficient user rights.
8. Pull Request Validation Failed
Solution: Fix code style issues or address failing PR policies. RCA: Linting errors or test failures in the pipeline.
9. Git Fetch Failed with Exit Code 128
Solution: Reconfigure credentials or verify the repository URL. RCA: Authentication issues or incorrect URL formatting.
10. Merge Conflict Detected
Solution: Resolve conflicts locally and update the PR branch. RCA: Simultaneous updates to the same files in different branches.
11. Package Upload Failed
Solution: Verify storage permissions and retry. RCA: Insufficient permissions for Azure Artifacts storage.
12. Artifact Not Found
Solution: Verify artifact name and ensure build artifacts are published. RCA: Missing or incorrect artifact publishing task.
13. Failed to Restore NuGet Packages
Solution: Check NuGet.Config file paths and credentials. RCA: Invalid credentials or missing feed configurations.
14. Test Run Failed
Solution: Debug failing tests locally or analyze logs for root causes. RCA: Code changes caused functional or integration test failures.
15. No Tests Discovered
Solution: Validate test path and framework version in the pipeline. RCA: Misconfigured test discovery paths or framework compatibility.
16. Test Adapter Not Found
Solution: Install the required test adapter on the agent. RCA: Missing adapter for the test framework (e.g., NUnit, MSTest).
17. ARM Template Deployment Failed
Solution: Validate the template and ensure referenced resources exist. RCA: Syntax errors, missing dependencies, or invalid parameters.
18. Deployment Slot Swap Failed
Solution: Verify slot compatibility and ensure no active deployments. RCA: Locked resources or mismatched configurations between slots.
19. Azure Resource Provisioning Failed
Solution: Ensure quota availability and validate resource group configurations. RCA: Exceeding quota limits or invalid resource settings.
20. Kubernetes Deployment Failed
Solution: Debug Kubernetes manifests and validate cluster connectivity. RCA: Incorrect manifest files or cluster misconfiguration.
21. Unrecognized Pipeline Schema or Invalid Syntax
Solution: Validate the YAML syntax using the Azure Pipelines YAML schema reference. RCA: YAML syntax errors, such as invalid indentation or unsupported schema versions.
22. Unexpected Value: ‘steps’
Solution: Check indentation and ensure “steps” is nested under “job” or “stage”. RCA: Misaligned or misplaced keys disrupt the YAML structure.
23. Variables Are Not Substituting in YAML
Solution: Ensure variables are defined correctly and used in the appropriate scope. RCA: Variables defined in incorrect scopes or referenced using incorrect syntax.
24. Task Not Found in Agent
Solution: Verify the task name and version in the YAML file. RCA: Missing task versions or incompatible agent configurations.
25. Condition Failed
Solution: Debug the conditional expression and ensure it evaluates correctly. RCA: Undefined or mismatched variables.
26. Build Pipeline Not Triggering Automatically
Solution: Check the trigger section in the YAML pipeline. RCA: Misconfigured trigger paths or branch patterns.
27. Release Pipeline Failed to Deploy Artifacts
Solution: Verify artifact links and permissions. RCA: Missing or incorrect artifact links in release pipelines.
28. Service Connection Authentication Failed
Solution: Revalidate the service connection credentials. RCA: Expired tokens, revoked credentials, or insufficient permissions.
29. Agent Unable to Download Task Definitions
Solution: Verify internet connectivity for the agent and update it to the latest version. RCA: Network restrictions or outdated agents.
30. Cannot Update Deployment Status
Solution: Grant deployment permissions and resolve conflicts. RCA: Lack of permissions or simultaneous deployments.
31. Personal Access Token (PAT) Expired
Solution: Regenerate the PAT and update its reference in pipelines or tools. RCA: Expired or revoked PAT.
32. Insufficient Permissions for Accessing Azure Resources
Solution: Update role assignments for the service principal or user. RCA: Misconfigured RBAC settings in Azure subscriptions.
33. Token Audience Not Recognized
Solution: Update the service principal to include the correct resource or scope. RCA: Misconfigured token scopes or incorrect audience claims.
34. User Lacks Permission to Queue Builds
Solution: Grant the user the Queue build permission or assign a Contributor role. RCA: Insufficient user permissions in Azure DevOps security settings.
35. Docker Image Push Failed
Solution: Verify Docker registry credentials and image tag format. RCA: Invalid credentials, incorrect image tags, or exceeding storage quotas.
36. Kubernetes Pod Stuck in ‘Pending’ State
Solution: Check resource limits and YAML manifest for scheduling rules. RCA: Resource constraints or misconfigured scheduling rules.
37. Ingress Not Resolving Traffic
Solution: Validate ingress annotations and DNS records. RCA: Incorrect ingress configurations or missing DNS records.
38. ImagePullBackOff in Kubernetes Pods
Solution: Verify registry credentials and image path. RCA: Invalid credentials or image pull policy mismatches.
39. Terraform Apply Failed with HTTP 403
Solution: Verify service principal permissions and resource group accessibility. RCA: Misconfigured RBAC role assignments.
40. State File Not Found in Terraform
Solution: Verify backend storage account accessibility. RCA: Backend storage deleted, inaccessible, or misconfigured.
41. ARM Template Parameter Value Not Supported
Solution: Validate parameter values and match template schema. RCA: Unsupported or incorrect parameter values.
42. Ansible Playbook Execution Failed
Solution: Debug the playbook with detailed logs and ensure host accessibility. RCA: Connectivity issues, missing SSH keys, or playbook syntax errors.
43. Work Item Type Not Found
Solution: Verify or add the work item type in the process template. RCA: Missing process configuration.
44. Area Path or Iteration Path Invalid
Solution: Update area and iteration path configurations. RCA: Area paths not updated after process changes.
45. Azure Monitor Metrics Not Visible
Solution: Verify Azure Monitor integration and permissions. RCA: Misconfigured Azure Monitor integration.
46. Failed to Create Log Analytics Workspace
Solution: Check subscription quotas and resolve naming conflicts. RCA: Resource quotas exceeded or naming conventions conflicted.
47. Unable to Download NuGet Package
Solution: Verify feed credentials and update the NuGet.Config file. RCA: Incorrect credentials or outdated feed references.
48. Universal Package Download Failed
Solution: Verify package existence and permissions in Azure Artifacts. RCA: Package deleted or permissions misconfigured.
49. Service Connection Expired or Not Authorized
Solution: Revalidate the service connection and update credentials. RCA: Expired tokens or revoked permissions.
50. Azure Resource Manager Service Connection Failed
Solution: Validate the service principal’s role assignments. RCA: Service principal lacks necessary permissions.
51. Self-Hosted Agent Went Offline
Solution: Restart the agent and check logs for connectivity issues. RCA: Network interruptions or misconfigured agent settings.
52. Agent Could Not Resolve Hostname
Solution: Verify DNS settings on the self-hosted agent. RCA: DNS resolution issues.
53. Out of Disk Space on Build Agent
Solution: Clean up temporary files and increase disk space. RCA: Disk space exhausted due to large artifacts or build outputs.
Keywords:
DevOps, Azure Pipelines, build errors, deployment issues, YAML syntax, Docker, Kubernetes, Terraform, Azure Key Vault, pipeline triggers, NuGet, agent offline, Azure DevOps, RBAC, service connection, personal access token, quota limits, YAML validation, pipeline permissions, Kubernetes manifests, resource constraints, CI/CD troubleshooting.
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