When you launch a new service or make a minor change in Oracle Cloud Infrastructure (OCI), a concise but thorough checklist is vital to avoid misconfigurations, security gaps, and compliance issues. This guide presents a ready‑to‑use OCI minor checklist, explains each item's purpose, and provides practical verification steps so you can confidently apply updates without disrupting workloads.
- Why a Minor Checklist Matters in OCI
- OCI Minor Checklist Overview
- Phase 1: Planning
- 1.1 Define Change Scope
- 1.2 Impact Assessment
- 1.3 Approval Workflow
- Phase 2: Configuration
- 2.1 Identity and Access Management (IAM)
- 2.2 Network Settings
- 2.3 Resource Configuration
- Phase 3: Validation
- 3.1 Security Scanning
- 3.2 Cost Estimation
- 3.3 Backup and Recovery Test
- 3.4 Functional Testing
- Phase 4: Post‑deployment
- 4.1 Monitoring Setup
- 4.2 Documentation Update
- 4.3 Rollback Readiness
- Common Pitfalls and How to Avoid Them
- Quick Reference Checklist (Printable)
Why a Minor Checklist Matters in OCI
OCI's modular architecture encourages frequent, incremental changes—patches, configuration tweaks, or adding a resource. Unlike major migrations, minor updates often receive less formal review, yet they can introduce:
- Unintended network exposure
- Policy conflicts
- Cost overruns
- Compliance violations (e.g., PCI‑DSS, GDPR)
A structured checklist ensures every change is validated against security baselines, cost controls, and operational standards before it goes live.
OCI Minor Checklist Overview
The checklist is organized into four phases: Planning, Configuration, Validation, and Post‑deployment. Each phase contains specific tasks, responsible roles, and verification methods.
| Phase | Key Tasks | Verification Method |
|---|---|---|
| Planning | Define scope, impact analysis, approval workflow | Change request document signed off |
| Configuration | Resource creation, IAM policies, network settings | Terraform plan output or console review |
| Validation | Security scans, cost estimate, backup test | OCI Vulnerability Scanning, Cost Analysis report |
| Post‑deployment | Monitoring, documentation, rollback readiness | Dashboard alerts, updated runbooks |
Phase 1: Planning
1.1 Define Change Scope
Clearly list the resources to be added or modified (e.g., a new Compute instance, a VCN subnet, or a policy update). Include version numbers if a service patch is involved.
1.2 Impact Assessment
Identify dependent services, SLA implications, and any regulatory constraints. Use OCI's Resource Manager to visualize dependencies.
1.3 Approval Workflow
Route the change request to the appropriate change advisory board (CAB). Document the approvers, justification, and rollback plan.
Phase 2: Configuration
2.1 Identity and Access Management (IAM)
Apply the principle of least privilege:
- Create a dedicated dynamic group for the new resource.
- Attach a custom policy that limits actions to the required compartments.
- Verify policy syntax with the OCI Policy Simulator.
2.2 Network Settings
Ensure the new resource resides in the correct Virtual Cloud Network (VCN) and subnet. Check:
- Security List rules – inbound/outbound ports.
- Network Security Groups (NSG) – any additional restrictions.
- Route tables – proper egress to internet gateway or NAT.
2.3 Resource Configuration
Use Infrastructure as Code (IaC) tools (Terraform, OCI Resource Manager) to define the resource. Commit the code to a version‑controlled repository and run terraform plan to review changes before apply.
Phase 3: Validation
3.1 Security Scanning
Run OCI Vulnerability Scanning on the new Compute instance and on any container images. Confirm that no high‑severity findings remain unaddressed.
3.2 Cost Estimation
Generate a cost forecast using OCI Cost Analysis. Compare the projected monthly spend against the budget ceiling for the compartment.
3.3 Backup and Recovery Test
If the change involves storage (Block Volume, Object Storage), take a snapshot and perform a restore test in a non‑production compartment.
3.4 Functional Testing
Execute automated integration tests that cover the new functionality. Document pass/fail results in the change request.
Phase 4: Post‑deployment
4.1 Monitoring Setup
Enable OCI Monitoring metrics and set alarms for critical thresholds (CPU, network latency, error rates). Add the resource to existing dashboards.
4.2 Documentation Update
Record the final configuration, IAM policies, and network diagram in the team's knowledge base. Include the change ticket number for traceability.
4.3 Rollback Readiness
Keep the Terraform state file and the pre‑change snapshot for at least 30 days. If an issue arises, you can revert by running terraform destroy on the new resources or restoring the snapshot.
Common Pitfalls and How to Avoid Them
- Missing IAM policy review: Always run the Policy Simulator; a forgotten allow group X to manage all‑resources can expose the entire tenancy.
- Overlooking security list egress rules: Default egress allows all traffic; tighten it to only required ports.
- Cost surprise: Enable the "Cost alerts" feature before deployment.
- Insufficient testing: Automate regression tests and run them in a staging compartment that mirrors production.
Quick Reference Checklist (Printable)
- Scope defined and documented
- Impact analysis completed
- Change request approved
- IAM policy created & simulated
- Network security lists and NSGs verified
- IaC code reviewed and plan approved
- Vulnerability scan cleared
- Cost forecast within budget
- Backup snapshot taken & restore tested
- Functional tests passed
- Monitoring alarms configured
- Documentation updated
- Rollback plan ready