Can I start minikube on a remote dedicated server to develope and test kubernetes with my team?
For now we didn‘t want to make a real 3 node cluster to safe money and I only can find information about minikube running for locally development.
Minikube is only designed for local development. You need to deploy a Kubernetes cluster using something like kubeadm
Related
What i want do is deployment of multiple container application in...
In RHEL os
RedHat Supportable product (if possible)
In single node K8S cluster (Bare metal machine)
So I found several way but I concerned about..
minikube, minishift, OKD, CodeReady Container
First, they run in VM but what I want is run in HOST.
Second, their doc said they are not for production environment.
So, Is there any PaaS for single-node cluster as production environment?
Docker, Docker-compose
Deployment target OS should maybe RHEL8. I guess it is not good idea to use docker because RedHat product is moving away from docker. Even in RHEL8 repository, there is no docker rpm for el8 yet.
My question is
Is there any PaaS for single-node cluster as production environment?
If not exist, docker-compose is best?
It was already mentioned, you should not use single node setup in production environment.
You should not do that because, if your servers drops you have service offline. There is nothing to switch to, nothing that might continue the process that was being worked on.
If you still want to setup a single node Kubernetes cluster you can do that using kubeadm. I think this would be closest to production grade as you can get.
Other then that as an alternative you can play with Installing Kubernetes with Minikube or Install a local Kubernetes with MicroK8s.
It's up to you which one you will choose but you need to remember this should not be running as a production, this should be a lab or a test environment which if works as expected will be migrated into few node production grade cluster.
As for PaaS as a single node there is Dokku.
Docker powered mini-Heroku. The smallest PaaS implementation you've ever seen.
And if you would consider using a cloud for PaaS, you can choose from AWS Cloud9, Azure App Service or Google App Engine.
Single node cluster is not recommended for production applications. You need scalability, high availability, fault tolerance for production apps. You must have more than one node to have these features.
I have MiniKube running on my Windows 10 machine. I would like to add an additional node to the cluster.
I have a Centos VM running on a different host that has k8s installed. How to I get the kubectrl join command to run on the VM from the master node running on my Windows machine?
Do I need to install an overlay network on the MiniKube VM? Or is one already installed?
Minikube is officially single-node at the moment. There's a discussion about this limitation at https://github.com/kubernetes/minikube/issues/94 But it seems people have found ways to do it with VirtualBox and there are other ways to run a multi-node cluster locally. Otherwise I'd suggest creating a cluster with one of the cloud providers (e.g. GKE).
I am trying to create Kubernetes cluster with different number of nodes using same machine. Here I want to create separate VMs and need to create node in those VMs. I am currently exploring about kubeadm and minikube for these tasks.
When I am exploring I had the following confusions:
I need to create 4 number of nodes each need to create in different VMs. Can I use kubeadm for these requirement?
Also found that Minikube is using for creating the single node structure and also possible to use to creation of VMs. What is the difference between kubeadm and minikube ?
If I want to create nodes in different VMs which tool should use along with installation of Kubernetes cluster master?
If I am using VMs, then can I directly install VMware workstation / virtualbox in my Ubuntu 16.04 ?
In AWS EC2, they already giving the Ubuntu as a virtual machine. So is possible to install VMware workstation on ubuntu? Since it is VMs on another VM.
Kubeadm should be a good choice for you. It is quite easy to use by just following the documentation. Minikube would give you only single node Kubernetes. As of minikube 1.10.1, it is possible to use multi-node clusters.
Kubeadm is a tool to get Kubernetes up and running on already existing machine. It will basically configure and start all required Kubernetes components (for minimum viable cluster). Kubeadm is the right tool to bootstrap the Kubernetes cluster on your virtual machines. But you need to prepare the machines your self (install OS + required software, networking, ...). kubeadm will not do it for you.
Minikube is a tool which will allow you to start locally single node Kubernetes cluster. This is usually done in a VM - minikube supports VirtualBox KVM and others. It will start for you the virtual machine and take care of everything. But it will not do a 4 node cluster for you.
Kubeadm takes care of both. You first setup the master and then use kubeadm on the worker nodes to join the master.
When you use Kubeadm, it doesn't really care what do you use for the virtualization. You can choose whatever you want.
Why do you want to run virtual machines on top of your EC2 machine? Why not just create more (perhaps smaller) EC2 machines for the cluster? You can use this as an inspiration: https://github.com/scholzj/terraform-aws-kubernetes. There are also some more advanced tools for setting up the whole cluster such as (for example) Kops.
We are running all our applications in Linux VM's and tried Kubernetes cluster on local Mac using minikube and it looks promising.
Interested in setting up Kubernetes on Linux VM's, but:
Is is possible to setup production ready cluster on Linux VM's?
As shown in kubernetes/kubeadm issue 465, setting up a cluster using VMs can be a challenge.
Using Calico will help, since it provides secure network connectivity for containers and virtual machine workloads.
Use Calico 2.6.
If i have installed K8S using minikube, where will the master node components be installed. (Ex: the api server, replication controller, etcd etc)
Is it in the host? or the VM?
I understand the worker node is the VM configured by minikube
Everything is installed in the Virtual Machine. Based on the localkube project, it is creating an All-in-one single-node cluster.
More information here: https://github.com/kubernetes/community/blob/master/contributors/design-proposals/cluster-lifecycle/local-cluster-ux.md