Overview A kubelet's HTTPS endpoint exposes APIs which give access to data of varying sensitivity, and allow you to perform operations with varying levels of power on the node and within containers. This document describes how to authenticate and authorize access to the kubelet's HTTPS endpoint. Kubelet authentication By default, requests to the kubelet's HTTPS endpoint that are not rejected by other configured authentication methods are treated as anonymous requests, and given a username of system:anonymous and a group of system:unauthenticated.

To report a security issue, please follow the Kubernetes security disclosure process. Work on Kubernetes code and public issues are tracked using GitHub Issues. Official list of known CVEs (security vulnerabilities) that have been announced by the Security Response Committee CVE-related GitHub issues Security-related announcements are sent to the kubernetes-security-announce@googlegroups.com mailing list.

kubeadm init phase enables you to invoke atomic steps of the bootstrap process. Hence, you can let kubeadm do some of the work and you can fill in the gaps if you wish to apply customization. kubeadm init phase is consistent with the kubeadm init workflow, and behind the scene both use the same code. kubeadm init phase preflight Using this command you can execute preflight checks on a control-plane node.

Synopsis Check whether an action is allowed. VERB is a logical Kubernetes API verb like 'get', 'list', 'watch', 'delete', etc. TYPE is a Kubernetes resource. Shortcuts and groups will be resolved. NONRESOURCEURL is a partial URL that starts with "/". NAME is the name of a particular Kubernetes resource. This command pairs nicely with impersonation. See --as global flag. kubectl auth can-i VERB [TYPE | TYPE/NAME | NONRESOURCEURL] Examples # Check to see if I can create pods in any namespace kubectl auth can-i create pods --all-namespaces # Check to see if I can list deployments in my current namespace kubectl auth can-i list deployments.

Production-Grade Container Orchestration

Production-Grade Container Orchestration

Caution:kubeadm alpha provides a preview of a set of features made available for gathering feedback from the community. Please try it out and give us feedback! Currently there are no experimental commands under kubeadm alpha. What's next kubeadm init to bootstrap a Kubernetes control-plane node kubeadm join to connect a node to the cluster kubeadm reset to revert any changes made to this host by kubeadm init or kubeadm join

System component metrics can give a better look into what is happening inside them. Metrics are particularly useful for building dashboards and alerts. Kubernetes components emit metrics in Prometheus format. This format is structured plain text, designed so that people and machines can both read it. Metrics in Kubernetes In most cases metrics are available on /metrics endpoint of the HTTP server. For components that don't expose endpoint by default, it can be enabled using --bind-address flag.

Production-Grade Container Orchestration

Operators are software extensions to Kubernetes that make use of custom resources to manage applications and their components. Operators follow Kubernetes principles, notably the control loop. Motivation The operator pattern aims to capture the key aim of a human operator who is managing a service or set of services. Human operators who look after specific applications and services have deep knowledge of how the system ought to behave, how to deploy it, and how to react if there are problems.