Here is the overall strategy to setup remote access to your Kubernetes Dashboard:
- Deploy SocketXP VPN agent Docker container in your K8 cluster.
- Install the kubectl CLI utility locally on your laptop.
- Setup the kubectl config file in your laptop with SocketXP Public URL, K8 SSL Certs, and Key.
- Remote access your private Kubernetes cluster from your laptop using the kubectl CLI utility.
- Run kubectl in proxy mode in your laptop.
Full Answer
How do I configure cluster access for the kubectl command-line tool?
This page explains how to configure cluster access for the kubectl command-line tool in Google Kubernetes Engine. If you run multiple clusters within your Google Cloud project, you need to choose which cluster kubectl talks to. You can set a default cluster for kubectl by setting the current context in Kubernetes' kubeconfig file.
Where can I find the kubectl config file?
Usually the kubectl config file is stored at: $Home/.kube/config in the master node of your remote Kubernetes cluster. This is the config file used by the kubectl utility installed in your remote cluster’s master node. Note: kubectl is one of the utilities installed in any Kubernetes cluster or minikube during a cluster setup.
How to access a minikube cluster on a remote machine?
On remote machine Base64 encode the 3 files ca.crt, client.crt and client.crt and create a config file (location of config file is $HOME/.kube/config) with following content. You can now run the kubectl command to access this minikube cluster. Opinions expressed by DZone contributors are their own.
How does kubectl certificate work?
When kubectl accesses the cluster it uses a stored root certificate and client certificates to access the server. (These are installed in the ~/.kube directory). Since cluster certificates are typically self-signed, it may take special configuration to get your http client to use root certificate.
How do I access Kubernetes remotely?
For the locally installed kubectl instance to remote access your Kubernetes cluster's API server running at https://cluster-ip-address:8443 , you need to setup a public we URL for the API server, so that you could access and manage the cluster from anywhere in the internet.
How do I access Kubernetes cluster from outside?
Ways to connect You have several options for connecting to nodes, pods and services from outside the cluster: Access services through public IPs. Use a service with type NodePort or LoadBalancer to make the service reachable outside the cluster. See the services and kubectl expose documentation.
How do I access the Kubernetes cluster?
Go client. To get the library, run the following command: go get k8s.io/client-go@kubernetes-
How do I access pod from kubectl?
To access a container in a pod that includes multiple containers:Run the following command using the pod name of the container that you want to access: kubectl describe pods pod_name. ... To access one of the containers in the pod, enter the following command: kubectl exec -it pod_name -c container_name bash.
How can I access a pod without service?
You cannot "access" a pods container port(s) without a service. Services are objects that define the desired state of an ultimate set of iptable rule(s). Also, services, like all other objects, are stored in etcd and maintained through your master(s).
How do you expose a pod to the outside world?
Configuration.Apply Pod Security Standards at the Cluster Level. Apply Pod Security Standards at the Namespace Level. Restrict a Container's Access to Resources with AppArmor. Restrict a Container's Syscalls with seccomp.Stateless Applications. Exposing an External IP Address to Access an Application in a Cluster.Services.
How do you SSH into a Kubernetes pod?
In order to SSH into the Pod, the Pod should have SSH server installed. This can be provisioned by installing OpenSSH Server as part of the Docker image tied to the Pod. The following commands should be included in the Dockerfile associated with the container tied to the Pod.
How do I get the URL for Kubernetes?
You have two ways to access it from your desktop:Create a nodeport type service and then access it via nodeip:nodeport.Use Kubectl port forward and then access it via localhost:forwardedport.
How do I access my IP pod?
Finding a Pod's IP address from inside the PodFirst, we need to define an environment variable inside the Pod. ... Now run your Pod, or restart your Pod if it's already running.Start a shell inside a Pod with kubectl exec : ... Type env and you'll see that the Pod's IP address is now stored in an environment variable.More items...•
How do you connect to a pod?
Getting StartedEnable Bluetooth on your phone (recommended).Sign in with your Xfinity ID.Select the Account icon ( ... Select Activate xFi Pods under Devices section.Choose which xFi Pod you're installing.Tap Get Started to begin activating your xFi Pods!More items...
What is the difference between POD and container?
“A container runs logically in a pod (though it also uses a container runtime); A group of pods, related or unrelated, run on a cluster. A pod is a unit of replication on a cluster; A cluster can contain many pods, related or unrelated [and] grouped under the tight logical borders called namespaces.”
How do I get the URL for Kubernetes?
You have two ways to access it from your desktop:Create a nodeport type service and then access it via nodeip:nodeport.Use Kubectl port forward and then access it via localhost:forwardedport.
How Kubernetes runs applications and expose to outside world?
A Kubernetes Service is a Kubernetes object which enables cross-communication between different components within and outside a Kubernetes cluster. It exposes Kubernetes applications to the outside world while simultaneously allowing network access to a set of Pods within and outside of a Kubernetes cluster.
What Is Minikube?
Minikube is a tool that makes it easy to run Kubernetes locally. It runs a single-node Kubernetes cluster inside a Virtual Machine (VM) on your laptop for users looking to try out Kubernetes or develop with it day-to-day.
Install Kubectl
It will help you connect to the minikube API server and schedule deployments.
Apply Port Forwarding in Network Settings
Once the setup is done open the network setting of minikube in VirtualBox and adds port forwarding to 8443. Port 51928 is mapped to 8443 of minikube in network settings below.
Start Minikube
The next step is to start a minikube. Take a note of the IP address of your machine, for me, it was 192.168.0.101.
Copy the Certificates and Key Files To Remote Machine
Copy ca.crt, client.crt and client.key to the remote machine and it has kubectl client, they are marked as yellow below. Please note both machines should be on the same network.
Run Base64 Encode
On remote machine Base64 encode the 3 files ca.crt, client.crt and client.crt and create a config file (location of config file is $HOME/.kube/config) with following content.
How to run Kubectl commands against a cluster?
To run kubectl commands against a cluster created in Cloud Console, from another computer, or by another member of the project, you need to generate a kubeconfig entry in your environment.
What is gcloud kubeconfig?
When you use gcloud to set up your environment's kubeconfig for a new or existing cluster, gcloud gives kubectl the same credentials used by gcloud itself. For example, if you use gcloud auth login, your personal credentials are provided to kubectl, including the userinfo.email scope.
What is the endpoint of a Kubernetes cluster?
The endpoint exposes the Kubernetes API server that kubectl and other services use to communicate with your cluster control plane (master). The endpoint IP is displayed in Cloud Console under the Endpoints field of the cluster's Details tab, and in the output of gcloud container clusters describe in the endpoint field.
What is private endpoint?
Private clusters have two separate endpoint IP addresses: privateEndpoint , which is an internal IP address, and publicEndpoint, which is an external one. The endpoint field refers to the external IP, unless public access to the endpoint is disabled, in which case the private IP will be used.
Can you run Kubectl against a specific cluster?
Additionally , you can run kubectl commands against a specific cluster using the --cluster flag. The following sections explain how kubeconfig works, how to set a default cluster for kubectl, and how to run individual kubectl commands against a specific cluster.
How does Kubectl work?
Kubectl handles locating and authenticating to the apiserver. If you want to directly access the REST API with an http client like curl or wget, or a browser, there are several ways to locate and authenticate:
How to access a cluster?
To access a cluster, you need to know the location of the cluster and have credentials to access it. Typically, this is automatically set-up when you work through a Getting started guide , or someone else setup the cluster and provided you with credentials and a location.
Do all Kubernetes nodes have their own IP address?
In Kubernetes, the nodes , pods and services all have their own IPs. In many cases, the node IPs, pod IPs, and some service IPs on a cluster will not be routable, so they will not be reachable from a machine outside the cluster, such as your desktop machine.
What are the two categories of users in Kubernetes?
Users in Kubernetes. All Kubernetes clusters have two categories of users: service accounts managed by Kubernetes, and normal users . It is assumed that a cluster-independent service manages normal users in the following ways: In this regard, Kubernetes does not have objects which represent normal user accounts.
What is a Kubernetes bootstrap token?
To allow for streamlined bootstrapping for new clusters, Kubernetes includes a dynamically-managed Bearer token type called a Bootstrap Token. These tokens are stored as Secrets in the kube-system namespace, where they can be dynamically managed and created. Controller Manager contains a TokenCleaner controller that deletes bootstrap tokens as they expire.
What is OpenID Connect?
OpenID Connect is a flavor of OAuth2 supported by some OAuth2 providers, notably Azure Active Directory, Salesforce, and Google. The protocol's main extension of OAuth2 is an additional field returned with the access token called an ID Token . This token is a JSON Web Token (JWT) with well known fields, such as a user's email, signed by the server.
How does the API read bearer tokens?
The API server reads bearer tokens from a file when given the --token-auth-file=SOMEFILE option on the command line . Currently, tokens last indefinitely, and the token list cannot be changed without restarting API server.
Can a user be added to a cluster?
Normal users cannot be added to a cluster through an API call. Even though a normal user cannot be added via an API call, any user that presents a valid certificate signed by the cluster's certificate authority (CA) is considered authenticated.
Can a user act as another user?
A user can act as another user through impersonation headers. These let requests manually override the user info a request authenticates as. For example, an admin could use this feature to debug an authorization policy by temporarily impersonating another user and seeing if a request was denied.
