How Can I Clean Up Residual Resources After the NGINX Ingress Controller Add-on in the Unknown State Is Deleted?¶
Symptom¶
The NGINX Ingress Controller add-on is in the unknown state, and after this add-on is uninstalled, residual components still remain.
Involved Kubernetes resources include:
Namespace-level resources: secret, ConfigMap, Deployment, Service, Role, RoleBinding, lease, ServiceAccount, and job
Cluster-level resources: ClusterRole, ClusterRoleBinding, IngressClass, and ValidatingWebhookConfiguration
Solution¶
Use kubectl to access a cluster.
Search for related resources.
className="nginx" namespace="kube-system" className=`if [[ ${className} == "nginx" ]]; then echo ""; else echo "-${className}";fi` kubectl get -n ${namespace} secret sh.helm.release.v1.cceaddon-nginx-ingress${className}.v1 cceaddon-nginx-ingress${className}-admission kubectl get -n ${namespace} cm cceaddon-nginx-ingress${className}-controller kubectl get -n ${namespace} deploy cceaddon-nginx-ingress${className}-controller cceaddon-nginx-ingress${className}-default-backend kubectl get -n ${namespace} svc cceaddon-nginx-ingress${className}-controller-admission cceaddon-nginx-ingress${className}-default-backend cceaddon-nginx-ingress${className}-controller kubectl get -n ${namespace} role cceaddon-nginx-ingress${className} kubectl get -n ${namespace} rolebinding cceaddon-nginx-ingress${className} kubectl get -n ${namespace} lease ingress-controller-leader${className} kubectl get -n ${namespace} serviceAccount cceaddon-nginx-ingress${className} kubectl get clusterRole cceaddon-nginx-ingress${className} kubectl get clusterRoleBinding cceaddon-nginx-ingress${className} kubectl get ingressClass ${className} kubectl get ValidatingWebhookConfiguration cceaddon-nginx-ingress${className}-admissionclassName specifies the name of a controller. namespace specifies the namespace where NGINX Ingress Controller was installed.
Manually delete the residual resources if the preceding resources are present.