Production-Grade Container Orchestration

Resource Types Configuration Configuration Configuration provides configuration for the EventRateLimit admission controller. FieldDescription apiVersionstringeventratelimit.admission.k8s.io/v1alpha1 kindstringConfiguration limits [Required] []Limit limits are the limits to place on event queries received. Limits can be placed on events received server-wide, per namespace, per user, and per source+object. At least one limit is required. Limit Appears in: Configuration Limit is the configuration for a particular limit type FieldDescription type [Required] LimitType type is the type of limit to which this configuration applies

Recommended usage conventions for kubectl. Using kubectl in Reusable Scripts For a stable output in a script: Request one of the machine-oriented output forms, such as -o name, -o json, -o yaml, -o go-template, or -o jsonpath. Fully-qualify the version. For example, jobs.v1.batch/myjob. This will ensure that kubectl does not use its default version that can change over time. Don't rely on context, preferences, or other implicit states. Subresources You can use the --subresource argument for kubectl subcommands such as get, patch, edit, apply and replace to fetch and update subresources for all resources that support them.

Resource Types CredentialProviderConfig KubeletConfiguration SerializedNodeConfigSource FormatOptions Appears in: LoggingConfiguration FormatOptions contains options for the different logging formats. FieldDescription text [Required] TextOptions [Alpha] Text contains options for logging format "text". Only available when the LoggingAlphaOptions feature gate is enabled. json [Required] JSONOptions [Alpha] JSON contains options for logging format "json". Only available when the LoggingAlphaOptions feature gate is enabled. JSONOptions Appears in: FormatOptions JSONOptions contains options for logging format "json". FieldDescription OutputRoutingOptions [Required] OutputRoutingOptions (Members of OutputRoutingOptions are embedded into this type.

Overview Package v1beta3 defines the v1beta3 version of the kubeadm configuration file format. This version improves on the v1beta2 format by fixing some minor issues and adding a few new fields. A list of changes since v1beta2: The deprecated "ClusterConfiguration.useHyperKubeImage" field has been removed. Kubeadm no longer supports the hyperkube image. The "ClusterConfiguration.dns.type" field has been removed since CoreDNS is the only supported DNS server type by kubeadm. Include "datapolicy" tags on the fields that hold secrets.

Production-Grade Container Orchestration

In Kubernetes versions before v1.23, a scheduling policy can be used to specify the predicates and priorities process. For example, you can set a scheduling policy by running kube-scheduler --policy-config-file <filename> or kube-scheduler --policy-configmap <ConfigMap>. This scheduling policy is not supported since Kubernetes v1.23. Associated flags policy-config-file, policy-configmap, policy-configmap-namespace and use-legacy-policy-config are also not supported. Instead, use the Scheduler Configuration to achieve similar behavior. What's next Learn about scheduling Learn about kube-scheduler Configuration Read the kube-scheduler configuration reference (v1)

Kubernetes volumes provide a way for containers in a pod to access and share data via the filesystem. There are different kinds of volume that you can use for different purposes, such as: populating a configuration file based on a ConfigMap or a Secret providing some temporary scratch space for a pod sharing a filesystem between two different containers in the same pod sharing a filesystem between two different pods (even if those Pods run on different nodes) durably storing data so that it stays available even if the Pod restarts or is replaced passing configuration information to an app running in a container, based on details of the Pod the container is in (for example: telling a sidecar container what namespace the Pod is running in) providing read-only access to data in a different container image Data sharing can be between different local processes within a container, or between different containers, or between Pods.

A ReplicaSet's purpose is to maintain a stable set of replica Pods running at any given time. Usually, you define a Deployment and let that Deployment manage ReplicaSets automatically.

Concepts and resources behind networking in Kubernetes.