
🛠️ DevOps & SRE · Flowchart
How a code change reaches production with GitOps: CI builds and tests, the image tag is written to a config repo, and Argo CD syncs the cluster to match Git.
Drawing diagram…
GitOps flow: a developer merges a pull request, CI runs tests and a security scan, builds and pushes a container image, and opens a pull request in the config repo to update the image tag for staging. Argo CD syncs staging and smoke tests run. If they pass, a promotion pull request for production is approved and Argo CD syncs production; if health checks fail it reverts the commit.
flowchart TD
A[Merge pull request to main] --> B[CI: tests and security scan]
B --> C{Passed?}
C -->|No| X[Notify developer]
C -->|Yes| D[Build and push image]
D --> E[Update staging tag in config repo]
E --> F[Argo CD syncs staging]
F --> G{Smoke tests pass?}
G -->|No| X
G -->|Yes| H[Open production promotion PR]
H --> I[Approval by release owner]
I --> J[Argo CD syncs production]
J --> K{Health checks OK?}
K -->|Yes| L[Release done]
K -->|No| M[Revert commit, Argo CD rolls back]A complete observability setup: OpenTelemetry collects metrics, logs and traces from services, which are stored separately and viewed together in Grafana with alerting.
The stages of a production incident from the first alert to the postmortem, with severity escalation along the way.
Who does what when production breaks: monitoring pages the on-call engineer, an incident channel is opened, customers are updated and the fix is rolled out.
A blue-green setup where a new version is deployed next to the live one and traffic is switched only after it passes checks, allowing instant rollback.
How infrastructure changes are made safely with Terraform: plan on pull request, policy checks, approval, apply and drift detection.
A self-service platform for developers: a Backstage portal with templates that create repos, pipelines and environments without tickets to the ops team.