Kubectl delete configmap example

Updating labels. properties --namespace genesys where <destination path> is the folder in which the Genesys IP is stored, for example: You can view example custom resources for different Jaeger configurations on GitHub. When creating a configmap based on a file, the key will default to the basename of the file, and the value will default to the file content. Attach to the created Pod using `kubectl exec -it pod-using-configmap sh`. properties and ui. Let's look at some basic kubectl output options. Now I want to use this ConfigMap nginx-cm for my app. Using a ConfigMap in Environment Variables. kubectl supports kustomization. The delete verb refers to deleting a single resource, for example a single Pod. Kernel Monitor. yaml 3. The BIG-IP Controller can deploy any iApp on a BIG-IP device using the k8s-bigip-ctlr iApp configuration parameters. Source from files. kubectl apply --prune-f manifest. OK, your right, we skipped the update of CRUD. This can be done with kubectl label. I've found the internal data structures easier to explore using the -o json output with jid and jq. The IAM user that created the cluster has these permissions by default. The most popular and widely used unix/linux job scheduler is Cron. level=err. namespace to that namespace. delete the DaemonSet Delete PostgreSQL Deployments. For example, change the language to Klingon and update the After attempting to delete the namespace, some resources may not have been deleted. # Convert a directory to a ConfigMap json file as when doing kubectl create configmap --from-file … Convert files to configmap json structure. Doing so will open a buffer with the default editor showing the contents of the ConfigMap as YAML. kubectl get configmap mountains -o yaml. The command takes multiple resources and waits until the specified condition is seen in the Status field of every given resource. . add test examples. ConfigMaps What is a configMap? A configMap is a resource that easily attaches configuration data to a pod. The command is long, so be careful when copying Notice that this approach only applies to node problem detector started with kubectl. We stored the values of host and name in this ConfigMap object and Choose a Node to reconfigure. This is the recommended way of managing Kubernetes applications on production. eks-cluster-manual in this example, chose SecurityGroup, fill AutoScale settings: Find an NodeImageId depending on a region — check the documentation for an up-to-date list. As in the previous examples, create the ConfigMap using the kubectl apply configmap command and specify the name of your YAML manifest. 14 and above. If the basename is an invalid key, you may specify an alternate key. :53 { errors log health rewrite name foo. kubectl replace --force -f . To check the version, enter kubectl version. Understand Configure Containers Using a ConfigMap. For example, if you want to label all your nginx pods as frontend tier, simply run: Your app may be tunable using configuration settings, for example, a PHP. data. svc. This YAML creates a ConfigMap with the value database set to mongodb, and database_uri, and keys set to the values in the YAML example code. kubectl delete configmap mountains. conf is reading its data. Names are case-sensitive. kubectl can be run on a directory and is idempotent. It is often used to provide production configuration: application configuration, log settings, etc Create a gist now Instantly share code, notes, and snippets. Kernel Monitor is a problem daemon in node problem detector. Prepare. Create ConfigMap by running the following kubectl command: kubectl apply -f <configmap_yaml_file. If you can identify and manually remove all remaining resources the namespace will finish Terminating. Theoretically, this is the simplest way. This default. Or, in description form. You can follow the steps below to configure a Redis cache using data stored in a ConfigMap. Start the kubectl proxy in the background using the following command: bash kubectl proxy --port=8001 & Run the following command to download and unpack the configuration from the configz endpoint. If you want to add headers that apply globally to all Ingresses, please have a look at this example . If the name is omitted, details for all resources are displayed, for example $ kubectl get pods . Example output: NAME READY STATUS RESTARTS AGE edge-microgateway-57ccc7776b-g7nrg 1/1 Running 0 19h helloworld-6987878fc4-cltc2 1/1 Running 0 1d Delete the edge-microgateway pod. Configuration, in contrast to containers, can be implemented using ConfigMap objects in Kubernetes. Real World Example: Configuring Redis using a ConfigMap. You can see the list of all configurations loaded with the following: kubectl get configmap NAME DATA AGEexample-config 0 2d Note: this command delete all the resources, including packages that you may have previously published to the registry. Example: Generate a ConfigMap with a data item containing the contents of a file. yml #Manifest is the file used to deploy the namespace and the naked pod. Is there a nice way to delete a specific key from a Kubernetes configmap, using kubectl? Right now I run: $ kubectl edit configmap myconfigmap and then I delete the entry but I would like a sol The example shown on this page works with kubectl 1. For example, the container’s scripts could use environmental variables defined in the ConfigMap to set up your application. # The password must be hashed with bcrypt with an at least 10 difficulty level. Create, Update & Delete Deployment This example program demonstrates the fundamental operations for managing on Deployment resources, such as Create , List , Update and Delete . For example, If you’ve been in the IT world in the past 20 years, you’ve probably had to deal with some sort of job scheduler. You can delete a Federated ConfigMap as you would delete a Kubernetes ConfigMap; however, for a Federated ConfigMap, you must send the request to the federation apiserver instead of sending it to a specific Kubernetes cluster. yaml deployment "resnet-serving-v2" created configmap "tf-serving-models-config-v2" created Note that we did not have to update the resnet-serving Service, which is fronting both deployments at this point on the label selector app=resnet-serving . For example, the following commands produce the same output: $ kubectl get pod pod1 $ kubectl get pods pod1 $ kubectl get po pod1 NAME: Specifies the name of the resource. g. You can also use kubectl CLI to create a ConfigMap. kubectl delete pod/busybox1 kubectl wait--for = delete pod/busybox1 --timeout= 60 s Experimental: Wait for a specific condition on one or many resources. Names are case-sensitive. Open the aws-auth ConfigMap. kubectl is primarily used to communicate with Kubernetes API servers to create, update, delete workloads within Kubernetes. yaml and delete all the other configmaps that are not in the file. From the CLI one way to achieve this is to delete the resource and create it again with the new values. yaml --all --prune-whitelist =core/v1/ConfigMap kubectl apply -f resnet_serving_v2. kubectl api-resources --verbs=list --namespaced -o name | xargs -n 1 kubectl get -n namespace name The MongoDB Enterprise Kubernetes Operator uses a Kubernetes ConfigMap to create or link your Ops Manager Project. properties file. local 10. The Ingress in this example adds a custom header to Nginx configuration that only applies to that specific Ingress. Processes in containers inside pods can also contact the apiserver. yaml since 1. yaml Create nginx ingress ConfigMap Resources may be generated from files - such as a java . kubectl get pods. example. yaml‍ The configMap will be rolled out to every container which is using it. Also have a CronJob example for kicks. There are other cases as well. The objective of this tutorial is to provide an overview of some of the common commands that you can utilise, as well as provide a good starting point in managing Kubernetes. nano config-map-data. 15 now provides a rollout restart sub-command that allows you to restart Pods in a Deployment - taking into account your surge/unavailability config - and thus have them pick up changes to a referenced ConfigMap, Secret or similar. 0/24 proxy . Copy the existing configuration and adapt it for your use case: Deploy to Kubernetes. In this lab we saw we can easily create a default Nginx load balancing web server with Kubernetes in AKS. JSON and YAML formats are accepted. 0. For node problem detector running as cluster addon, because addon manager doesn’t support ConfigMap, configuration overwriting is not supported now. Sometimes existing pods and other resources need to be relabeled before creating new resources. kubectl create configmap my-config --from-env-file= path / to /bar. yaml. To give some examples from the API documentation: kubectl delete configmap/configmap-example-1 configmap "configmap-example-1" deleted Create a ConfigMap with comments and blank lines in it. We will focus on HTTP health checks in the following. For a more concrete example, check the tutorial of deploying Ghost. You must delete the underlying ConfigMaps manually. <KEY>=<FILE>, or <DIR>. default. kubectl --kubeconfig=config describe --filename=manifests. Clone via HTTPS Clone with Git or checkout with SVN using the repository’s web address. This will create a ConfigMap named example-config with a single key/value pair. Both of these resources are commonly used when deploying a GitOps Configuration as Code workflow. And the language as a ConfigMap: kubectl Will cause a service outage. json # Create a service for a replicated nginx, which serves on port 80 and connects to the containers on port 8000 kubectl expose rc nginx --port = 80--target-port = 8000 # Update a single-container pod's image version (tag) to v4 kubectl get pod mypod -o yaml | sed 's/\(image: myimage\):. kubectl delete Description. Storage options Cassandra storage # Download the dex config kubectl get configmap dex -n auth -o jsonpath = '{. Creating a customized Nginx instance requires a bit more effort. yaml}' > dex-config. using kubectl. Using kubectl. kubectl delete configmap gcxi-config kubectl create configmap gcxi-config --from-env-file=<destination path>/gcxi. yaml containing a ConfigMap from the redis-config file: kubectl-delete man page. yaml # kube-lego kubectl apply -f lego/00-namespace. Updating the mealplan-config ConfigMap. Declarative Management of Kubernetes Objects Using Configuration Files. However, when we create the ConfigMap, this default message gets overridden by that property. yaml Canary Delete Step. key1=value1 key2=value2 There is no limitation on what type of files can be used to create a ConfigMap. yaml Create a default http backend kubectl apply -f nginx/default-deployment. yaml # Edit the dex config with extra users. Create the ConfigMap using the command kubectl apply -f config-map. Mount the ConfigMap through a Volume. $ kubectl get pods NAME READY REASON RESTARTS AGE nginx-karne 1/1 Running 0 14s nginx-mo5ug 1/1 Running 0 14s $ kubectl get rc CONTROLLER CONTAINER(S) IMAGE(S) SELECTOR REPLICAS nginx nginx nginx app=nginx 2 $ docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 1d3f9cedff1d nginx:latest "nginx -g 'daemon of 41 seconds ago Up 40 seconds k8s_nginx. Then, force CoreDNS to reload the ConfigMap using the kubectl delete pod for the Kubernetes Scheduler to recreate them: Kubernetes - Kubectl Commands - Kubectl controls the Kubernetes Cluster. For example, you can do that using kubectl by running: kubectl --context = federation-cluster delete configmap Note that at this point, deleting a Federated ConfigMap will not delete the corresponding ConfigMaps from underlying clusters. For example, you can do that using kubectl by running: kubectl --context=federation-cluster delete configmap Note that at this point, deleting a Federated ConfigMap will not delete the corresponding ConfigMaps from underlying clusters. You can use the simplest example (shown above) and create a Jaeger instance using the defaults, or you can create your own custom resource file. The management UI runs as a NodePort Service on Kubernetes, and shows the connectivity of the Services in this example. First create a ConfigMap from the redis-config file: A ConfigMap can be edited live within Kubernetes with the kubectl edit command. From Kubernetes 1. Right now, I've to delete the current configmap and secret to add the new ones to update: step1: kubectl delete configmap foo. root@test:~# kubectl create clusterrolebinding cluster-admin --clusterrole=cluster-admin --user=user1 --user=user2 --group=group1 . Deleting Container Ingress Service (CIS) AS3 configmaps¶. Use the kubectl create configmap command to create configmaps from directories, files, or literal values: kubectl create configmap <map-name> <data-source>. When I deploy Vault to Kubernetes, I realize it’s important to have auto-unseal capability to make the Vault cluster true highly available. Example Kubernetes setup with Postgres and two Services for serving an API and a static site using Ingress. conf is an nginx configuration file. A ConfigMap stores K8s-specific configuration that can be mounted as volume or used in env variables. Configuring the Custom Resource. First, we give Kubernetes the replacement map with the replace command: kubectl replace -f prometheus-config2. . Use the Kubernetes command-line tool, kubectl, to deploy and manage applications on Kubernetes. For example, you can do that using kubectl by running: kubectl --context = federation-cluster delete configmap # # Typical use case: A CRD object refers to a ConfigMap object. It might not be suitable for all use cases but it certainly makes things a lot easier. Here is an example of kubernetes object pod creating and updating with the YAML file. Additionally, every time we decide to update the ConfigMap, the message on the page changes accordingly: kubectl edit configmap client-service 6. Kubectl create just creates the object in the cluster and kubectl apply creates and updates the objects in the cluster. 8, access to the API was put under a Role Based Access Control model for increased security. yaml . For example, I may have the configmap generated from following files. Kubernetes deployments by example A deployment is a supervisor for pods , giving you fine-grained control over how and when a new pod version is rolled out as well as rolled back to a previous state. az aks use-dev-spaces -g my-aks-group -n my-aks --update --space my-space Use Azure Dev Spaces with a managed Kubernetes cluster, selecting a new or existing dev space 'develop/my-space' without prompting for confirmation. First create a kustomization. yaml inside a directory. Set up our new database (we’re not going to migrate any of the data). Each property name in this ConfigMap becomes a new file in the mounted directory (`/etc/config`) after you mount it. In this example, the name of this Node is referred to as NODE_NAME. First create a ConfigMap from the redis-config file: Updating Kubernetes Deployments on a ConfigMap Change ••• Update (June 2019): kubectl v1. How to detect the format and apply proper merging is tricky. All containers in a pod are scheduled on the same node. where <map-name> is the name you want to assign to the ConfigMap and <data-source> is the directory, file, or literal value to draw the data from. Then, create the ConfigMap in the cluster using kubectl apply -f config-map. While this example starts with totally new instances, it’s just as easy to add an ingress identifier router to a pre-existing linked setup. // To clean up the testing configmaps $ kubectl delete configmap micro --all-namespaces $ kubectl delete configmap micro-config --all-namespaces. Edit This Page. Kubectl output options. NAME: Specifies the name of the resource. 6171169d_nginx-karne_default Getting Started With Kubectl. Replacing the configMap is a 2-step process for Prometheus. Source from literal strings. We intend to fix this in the future. You can adopt the source code from this example to write programs that manage other types of resources through the Kubernetes API. kubectl create configmap <name> --from-literal=<key>=<value> kubectl create configmap <name> --from-file *. Conclusion. Note: If you are already familiar with Kubectl, you can skip this section. The command input accepts one of the following kubectl commands: apply, create, delete, exec Specify keys and literal values to insert in configMap. Cron jobs Set the stack’s name, can be any, and cluster name — same, as we did it when created Master nodes, e. It monitors kernel log and Using Kubernetes Configmap with configuration files for deploying Rails applications By Rahul Mahale in Kubernetes on May 25, 2017 This post assumes that you have basic understanding of Kubernetes terms like pods and deployments . It is one of the key components of Kubernetes which runs on the workstation on any machine when the setup is done. These configuration artifacts should be decoupled from image content in order to keep containerized applications portable. Delete resources by filenames, stdin, resources and names, or by resources and label selector. A single configmap may package one or more key/value pairs. txt key1=value1 key2=23 # comment kube-lego example Create namespaces # echoserver kubectl apply -f echoserver/00-namespace. # In kustomization, the ConfigMap object name may change by adding namePrefix, nameSuffix, or hashing # The name reference for this ConfigMap object in CRD object need to be # updated with namePrefix, nameSuffix, or hashing in the same way. kubectl delete pod edge-microgateway-57ccc7776b-g7nrg. When performing an operation on multiple resources, you can specify each resource by type and name or specify one or more files: For example, if you had a Deployment called “web” with 3 replicas, and 1 of them is running on the node that will be deleted, and it is not acceptable to only run 2 replicas at any time, you would scale the Deployment up to 4 replicas, wait for the new pod to become Ready, and then delete the old pod. It’s what you use to scale, roll out, and roll back versions of your applications. cluster. Introduction. When you (a human) access the cluster (e. Starting in Kubernetes 1. This means that we can run it as often as we want: the result will not change. Creating a ConfigMap is simple using kubectl (see kubectl create configmap --help for more examples): We use kubectl to create and update objects in the cluster. env Create a configmap based on a file, directory, or specified literal value. shell $ kubectl get pod pod1 $ kubectl get pods pod1 $ kubectl get po pod1 * NAME: Specifies the name of the resource. We can also create a ConfigMap from generators and then apply it to create the object on the Apiserver. Thankfully, Kubernetes makes it easy for us to edit the data in a config map using the kubectl edit command. Kubernetes Deployment Tutorial with Example YAML. 6 onwards, RBAC policies are enabled by default. With a deployment, you tell Kubernetes how many copies of a Pod you want running. When creating a configmap based on a directory, each file whose basename is a valid key in the directory will be packaged into the configmap. step2: kubectl create configmap foo --from-file foo. For example, the following command creates a ConfigMap called game-data from a directory, game-configs, which contains two properties files: game. Non-regular files, such as symlinks, devices, and pipes, are ignored by kubectl. In this example configMapKeyRef gets the value name from the ConfigMap sys-app-name. You can use this procedure to delete CIS AS3 configmaps, and also remove the associated configuration objects from your BIG-IP system. Many applications require configuration via some combination of config files, command line arguments, and environment variables. Example: kubectl apply -f container-azm-ms-agentconfig. Mutual Auto-Unseal Two Vault clusters in Kubernetes. /pod. Similarly, secretKeyRef gets the values username and password from the Secret sys-app-credentials. It will detect changes to nginx's configuration file If we don't specify a ConfigMap, then we should expect to see the default message, which is set in the class. Example output: Health checks, or probes as they are called in Kubernetes, are carried out by the kubelet to determine when to restart a container (for livenessProbe) and used by services and deployments to determine if a pod should receive traffic (for readinessProbe). Since the Canary Deployment step was successful, it is no longer needed. The configuration change can take a few minutes to finish before taking effect, and all omsagent pods in the cluster will restart. Everyone running applications on Kubernetes cluster uses a deployment. The ConfigMaps will have data values populated from the file contents. kubectl delete-f [manifest name]. These sources include a ConfigMap, a Secret, and information about the cluster. 14. yaml # nginx-ingress kubectl apply -f nginx/00-namespace. If you have many ConfigMap keys, it might be more viable to define those keys formatted as POSIX environmental variables and expose them to the pod using envFrom field of the spec. This, allows users and operators to swap the binary used by a container in a controlled way, at a certain rate, while monitoring progress and making it possible to detect problems (for example, via liveness and readiness probes). Create ConfigMap from config files¶. An example of creating a ClusterRoleBinding for user1, user2,and group1 using the cluster-admin ClusterRole. local kubernetes cluster. kubectl describe configmap mountains. kubectl delete — Delete resources by filenames, stdin, resources and names, or by resources and label selector Synopsis. The example listed is a JSON file as the value. conf exec Execute a command inside an ingress-nginx pod general Inspect the kubectl delete pod basic-pod kubectl delete service basic-deployment kubectl delete configmap basic-config kubectl delete deployment basic-deployment 9. The following examples assume that you created a namespace using the default Kubernetes Operator namespace of mongodb. You can customize the Verdaccio configuration using a Kubernetes configMap. The key to adding your ConfigMap as environment variables to your pods is the Change our ConfigMap’s POSTGRES_HOST value so Rails knows what to talk to. Within that chart I have the following manifest for a ConfigMap: As you can see, the name of the ConfigMap is nginx-cm, and a file called default. To create a Kubernetes Operator ConfigMap, you need to edit a few lines of the example ConfigMap YAML file and apply the ConfigMap. When you connect to your deployment, you must specify the external DNS of a node in the Kubernetes cluster as the --host option in your mongo command. The generators should be specified in a kustomization. Changes to ConfigMap data will cause a ConfigMap with a new name to be generated, triggering a rolling update to Workloads referencing the ConfigMap. The deletecollection verb refers to deleting multiple resources at the same time, for example multiple Pods using a label or field selector or all Pods in a namespace. Subdirectories are also ignored; kubectl create configmap does not recurse into subdirectories. conf cache 30 } Once we add that to the ConfigMap via kubectl edit or kubectl apply, we have to let CoreDNS know that the Corefile has changed. yaml kubectl apply -f nginx/default-service. # kubectl delete service postgres # kubectl delete deployment postgres # kubectl delete configmap postgres-config # kubectl delete persistentvolumeclaim postgres-pv-claim # kubectl delete persistentvolume postgres-pv-volume Deploy iApps with the BIG-IP Controller¶. The examples here described were tested in Minikube, but they can be applied to any Kubernetes cluster. properties: This means that new ConfigMap and Secret values will be available to the container without needed to restart the running processes. There are multiple options: Using --from-literal to seed config data We’re seeding the following key-value pairs into the ConfigMap — foo_env=bar and hello_env=world In this case, the mongod is exposed on port 27017 in the Kubernetes container, and the NodePort service exposes the mongod via port 30994. Our intention is to list nodes (with their AWS InstanceId) and Pods (sorted by node). *$/\1:v4/' | kubectl replace -f - kubectl label pods my-pod new-label = awesome # Add a Label kubectl annotate pods my-pod icon-url = http Syntax. txt kubectl get nodes --watch; To add an IAM user or role to an Amazon EKS cluster. If the name is omitted, details for all resources are displayed, for example $ kubectl get pods. Deploy the ConfigMap changes. Custom Verdaccio configuration. By executing kubectl apply -f <FILE_NAME>we will create the ConfigMap and Secret objects in our Kubernetes cluster state store. Using kubectl, you can inspect cluster resources; create, delete, and update components; look at your new cluster; and bring up example apps. properties Get a configmap kubectl get configmap <name> -o yaml helm delete nginx-ingress Remove Helm (Tiller) From Kubernetes Cluster If you want to remove the tiller installtion from the kubernetes cluster use the following command. The iApp must exist on your BIG-IP before BIG-IP Controller attempts to deploy it. kubectl create configmap Description. Note that it may take several minutes to download the necessary Docker images for this demo. Kubernetes objects can be created, updated, and deleted by storing multiple object configuration files in a directory and using kubectl apply to recursively create and update those objects as needed. If you specified a different label for your namespace when you created it , change all values for metadata. The only thing needed is to run kubectl command each time Jenkins detects . properties. RBAC policies are vital for the correct management of your cluster, as they allow you to specify which types of actions are permitted depending on the user and their role in your organization. For deletion of PostgreSQL resources, we need to use below commands. Is there any other way to do this rather than deleting the old one to add new. com foo. The prerequisites and procedure depend on whether your Ops Manager deployment is running with TLS I’ve created a very simple chart to use as an example to go over this. A ConfigMap can be mounted into a Pod in a number of ways, but in this example we’ll load them directly into the Pod’s environment. yaml>. using kubectl), you are authenticated by the apiserver as a particular User Account (currently this is usually admin, unless your cluster administrator has customized your cluster). For example, run the following command: kubectl create configmap example-config --from-literal=log. We can start with: kubectl get no and. Finally, to complete CRUD operations delete the mountains. kubectl get po -o wide Json and Jq. Ensure that the AWS credentials that kubectl is using are already authorized for your cluster. The Canary Delete step is used to clean up the workload deployed by the Canary Deployment step. config\. yaml -l app=nginx # Apply the configuration in manifest. $ kubectl cordon my-node # Mark my-node as unschedulable $ kubectl drain my-node # Drain my-node in preparation for maintenance $ kubectl uncordon my-node # Mark my-node as schedulable $ kubectl top node my-node # Show metrics for a given node $ kubectl cluster-info # Display addresses of the master and services $ kubectl cluster-info dump When creating a configmap based on a file, the key will default to the basename of the file, and the value will default to the file content. When changes are saved, they will immediately be live in Kubernetes. Install and Set Up kubectl. What is a The Kubernetes ConfigMap resource is used to mount configuration files into pods. kubectl apply --prune -f manifest. - instructions. Kubernetes pods by example A pod is a collection of containers sharing a network and mount namespace and is the basic unit of deployment in Kubernetes. kubectl ingress-nginx --help A kubectl plugin for inspecting your ingress-nginx deployments Usage: ingress-nginx [command] Available Commands: backends Inspect the dynamic backend information of an ingress-nginx instance certs Output the certificate data stored in an ingress-nginx pod conf Inspect the generated nginx. Also note that this example maps the containerd $ kubectl delete configmap falco-config $ kubectl create configmap falco-config --from-file=falco-config $ kubectl One of the powerful aspects of Kubernetes is the ability for applications to call the Kubernetes API for advanced configuration. kubectl delete pod qos-demo-2 --namespace = qos-example Create a Pod that gets assigned a QoS class of BestEffort For a Pod to be given a QoS class of BestEffort, the Containers in the Pod must not have any memory or CPU limits or requests. Create a ConfigMap. ini file, or environment variables and flags that change logic in your app. Create a configmap based on a file, directory, or specified literal value. This section provides a brief overview of the most basic Kubectl commands, which are described in more detail in later chapters. It uses an nginx server block to serve the index page over both http and https. In this approach, Jenkins is used to test, validate, and deploy our Kubernetes configuration files. This example creates a basic nginx https service useful in verifying proof of concept, keys, secrets, configmap, and end-to-end https service creation in kubernetes. To generate a ConfigMap Resource for a file, add an entry to configMapGenerator with the filename. The deployment takes care of everything else. While not really the best practice, it can be handy for testing things in development. /etc/resolv. Before you begin; Install kubectl; Install kubectl binary using native package management The ConfigMap hash is appended after a nameSuffix, if one is specified. The Kubernetes Secret resource is used to mount secret files into pods