Fetch Ingress Object Health in Namespace

fetch_ingress_object_health_in_namespace.txt

namespace="${NAMESPACE}"; context="${CONTEXT}"; for ingress in $(kubectl get ingress -n "$namespace" --context "$context" -ojsonpath='{range .items[*]}{.metadata.name}{"\n"}{end}'); do echo "Ingress: $ingress"; health_status="NA"; services=(); backend_services=$(kubectl get ingress "$ingress" -n "$namespace" --context "$context" -ojsonpath='{range .spec.rules[*].http.paths[*]}{.backend.service.name}{"|"}{.backend.service.port.number}{"\n"}{end}'); while IFS='|' read -r service port; do if [ -n "$service" ] && [ -n "$port" ]; then echo "Backend Service: $service, Port: $port"; service_exists=$(kubectl get service "$service" -n "$namespace" --context "$context" -ojsonpath='{.metadata.name}'); if [ -z "$service_exists" ]; then health_status="Unhealthy"; echo "Validation: Service $service does not exist"; else endpoint_pods=$(kubectl get endpoints "$service" -n "$namespace" --context "$context" -ojsonpath='{range .subsets[*].addresses[*]}- Pod Name: {.targetRef.name}\n Pod IP: {.ip}\n{end}'); if [ -z "$endpoint_pods" ]; then health_status="Unhealthy"; echo "Validation: Endpoint for service $service does not have any pods"; else echo "Endpoint Pod:"; echo "$endpoint_pods"; health_status="Healthy"; fi; fi; services+=("$service"); fi; done <<< "$backend_services"; for service in "${services[@]}"; do service_exists=$(kubectl get service "$service" -n "$namespace" --context "$context" -ojsonpath='{.metadata.name}'); if [ -z "$service_exists" ]; then health_status="Unhealthy"; echo "Validation: Service $service does not exist"; else endpoint_exists=$(kubectl get endpoints "$service" -n "$namespace" --context "$context" -ojsonpath='{.metadata.name}'); if [ -z "$endpoint_exists" ]; then health_status="Unhealthy"; echo "Validation: Endpoint for service $service does not exist"; fi; fi; done; if [ "$health_status" = "Unhealthy" ]; then echo "Health Status: $health_status"; echo "====================="; elif [ "$health_status" = "Healthy" ]; then echo "Health Status: $health_status"; fi; echo "------------"; done

I tested in both bash and zsh, and it it seems to work for me. Maybe these examples help?

sheastewart@android-dbfa23a3e7d8ade7 ~ % namespace="vault"; context=""; for ingress in $(kubectl get ingress -n "$namespace" --context "$context" -ojsonpath='{range .items[*]}{.metadata.name}{"\n"}{end}'); do echo "Ingress: $ingress"; health_status="NA"; services=(); backend_services=$(kubectl get ingress "$ingress" -n "$namespace" --context "$context" -ojsonpath='{range .spec.rules[*].http.paths[*]}{.backend.service.name}{"|"}{.backend.service.port.number}{"\n"}{end}'); while IFS='|' read -r service port; do if [ -n "$service" ] && [ -n "$port" ]; then echo "Backend Service: $service, Port: $port"; service_exists=$(kubectl get service "$service" -n "$namespace" --context "$context" -ojsonpath='{.metadata.name}'); if [ -z "$service_exists" ]; then health_status="Unhealthy"; echo "Validation: Service $service does not exist"; else endpoint_pods=$(kubectl get endpoints "$service" -n "$namespace" --context "$context" -ojsonpath='{range .subsets[*].addresses[*]}- Pod Name: {.targetRef.name}\n Pod IP: {.ip}\n{end}'); if [ -z "$endpoint_pods" ]; then health_status="Unhealthy"; echo "Validation: Endpoint for service $service does not have any pods"; else echo "Endpoint Pod:"; echo "$endpoint_pods"; health_status="Healthy"; fi; fi; services+=("$service"); fi; done <<< "$backend_services"; for service in "${services[@]}"; do service_exists=$(kubectl get service "$service" -n "$namespace" --context "$context" -ojsonpath='{.metadata.name}'); if [ -z "$service_exists" ]; then health_status="Unhealthy"; echo "Validation: Service $service does not exist"; else endpoint_exists=$(kubectl get endpoints "$service" -n "$namespace" --context "$context" -ojsonpath='{.metadata.name}'); if [ -z "$endpoint_exists" ]; then health_status="Unhealthy"; echo "Validation: Endpoint for service $service does not exist"; fi; fi; done; if [ "$health_status" = "Unhealthy" ]; then echo "Health Status: $health_status"; echo "====================="; elif [ "$health_status" = "Healthy" ]; then echo "Health Status: $health_status"; fi; echo "------------"; done
Ingress: vault-ingress
Backend Service: vault, Port: 8200
Endpoint Pod:
- Pod Name: vault-0
 Pod IP: 10.104.17.38

Health Status: Healthy
------------
sheastewart@android-dbfa23a3e7d8ade7 ~ % bash

The default interactive shell is now zsh.
To update your account to use zsh, please run `chsh -s /bin/zsh`.
For more details, please visit https://support.apple.com/kb/HT208050.
bash-3.2$ namespace="vault"; context=""; for ingress in $(kubectl get ingress -n "$namespace" --context "$context" -ojsonpath='{range .items[*]}{.metadata.name}{"\n"}{end}'); do echo "Ingress: $ingress"; health_status="NA"; services=(); backend_services=$(kubectl get ingress "$ingress" -n "$namespace" --context "$context" -ojsonpath='{range .spec.rules[*].http.paths[*]}{.backend.service.name}{"|"}{.backend.service.port.number}{"\n"}{end}'); while IFS='|' read -r service port; do if [ -n "$service" ] && [ -n "$port" ]; then echo "Backend Service: $service, Port: $port"; service_exists=$(kubectl get service "$service" -n "$namespace" --context "$context" -ojsonpath='{.metadata.name}'); if [ -z "$service_exists" ]; then health_status="Unhealthy"; echo "Validation: Service $service does not exist"; else endpoint_pods=$(kubectl get endpoints "$service" -n "$namespace" --context "$context" -ojsonpath='{range .subsets[*].addresses[*]}- Pod Name: {.targetRef.name}\n Pod IP: {.ip}\n{end}'); if [ -z "$endpoint_pods" ]; then health_status="Unhealthy"; echo "Validation: Endpoint for service $service does not have any pods"; else echo "Endpoint Pod:"; echo "$endpoint_pods"; health_status="Healthy"; fi; fi; services+=("$service"); fi; done <<< "$backend_services"; for service in "${services[@]}"; do service_exists=$(kubectl get service "$service" -n "$namespace" --context "$context" -ojsonpath='{.metadata.name}'); if [ -z "$service_exists" ]; then health_status="Unhealthy"; echo "Validation: Service $service does not exist"; else endpoint_exists=$(kubectl get endpoints "$service" -n "$namespace" --context "$context" -ojsonpath='{.metadata.name}'); if [ -z "$endpoint_exists" ]; then health_status="Unhealthy"; echo "Validation: Endpoint for service $service does not exist"; fi; fi; done; if [ "$health_status" = "Unhealthy" ]; then echo "Health Status: $health_status"; echo "====================="; elif [ "$health_status" = "Healthy" ]; then echo "Health Status: $health_status"; fi; echo "------------"; done
Ingress: vault-ingress
Backend Service: vault, Port: 8200
Endpoint Pod:
- Pod Name: vault-0\n Pod IP: 10.104.17.38\n
Health Status: Healthy
------------
bash-3.2$