What types of call checks do you know and can you give examples?

Call check types in DevOps are usually related to monitoring the availability, correctness, and performance of services and applications. Here are the main types:

1. Health Check — verifies that the service is running and responding. For example, an HTTP request to the /health endpoint.

2. Readiness Check — determines if the service is ready to accept traffic. Used in Kubernetes for deployment management.

3. Liveness Check — checks if the service is alive. If the check fails, the container is restarted.

4. Smoke Test — a quick test of core functionalities after deployment.

5. Integration Test — tests the interaction between components.

6. Performance Check — measures response time and load.

Example of a simple health check in bash:

curl -f http://localhost:8080/health || exit 1

If the service does not respond with a 200 code, the script will terminate with an error.

These checks help automate monitoring and ensure system stability.