Comment 2. Kubespray provides a set of Ansible roles for Kubernetes deployment and configuration. Below is the sample environment configuration where we will be installing a Kubernetes cluster with 3 Master and 3 Worker nodes.
Let me describe them in a more detailed manner. R unning the two commands below will generate a "hosts. Without this, HPAs will not work. This step takes some time to complete and it should be ready in few minutes to deploy your application. In this step, we will create the service account for the Kubernetes Dashboard and get its credentials. By default, the dashboard will not be visible on the Master VM. Run the following command in the command line. Run the below command on bash terminal from your local system through "ssh" and feed the password.
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Join For Free. What is Kubespray? Environment Configuration Below is the sample environment configuration where we will be installing a Kubernetes cluster with 3 Master and 3 Worker nodes. Master Nodes 1 kubernetes-master-1 Make sure the operating system is up-to-date. Without this, HPAs will not work 7.GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. If nothing happens, download GitHub Desktop and try again.
If nothing happens, download Xcode and try again. If nothing happens, download the GitHub extension for Visual Studio and try again. If you have questions, check the documentation at kubespray. You can get your invite here. Note: When Ansible is already installed via system packages on the control machine, other python packages installed via sudo pip install -r requirements.
As a consequence, ansible-playbook command will fail with:. One way of solving this would be to uninstall the Ansible package and then, to install it via pip but it is not always possible. For Vagrant we need to install python dependencies for provisioning tasks. Check if Python and pip are installed:. If this returns the version of the software, you're good to go. Note: The list of validated docker versions was updated to 1.
The kubelet might break on docker's non-standard version numbering it no longer uses semantic versioning. To ensure auto-updates don't break your cluster look into e. Hardware: These limits are safe guarded by Kubespray. Actual requirements for your workload can differ. For a sizing guide go to the Building Large Clusters guide. You can choose between 10 network plugins.
Calico is a networking and network policy provider.Edit This Page. Kubespray provides:. To choose a tool which best fits your use case, read this comparison to kubeadm and kops. Provision servers with the following requirements :. After you provision your servers, create an inventory file for Ansible. You can do this manually or via a dynamic inventory script.
Kubespray customizations can be made to a variable file. If you are just getting started with Kubespray, consider using the Kubespray defaults to deploy your cluster and explore Kubernetes. Cluster deployment using ansible-playbook. Kubespray provides a way to verify inter-pod connectivity and DNS resolve with Netchecker. Netchecker ensures the netchecker-agents pods can resolve DNS requests and ping each over within the default namespace.
Those pods mimic similar behavior of the rest of the workloads and serve as cluster health indicators. Kubespray provides additional playbooks to manage your cluster: scale and upgrade. You can add worker nodes from your cluster by running the scale playbook. You can remove worker nodes from your cluster by running the remove-node playbook. You can upgrade your cluster by running the upgrade-cluster playbook. You can reset your nodes and wipe out all components installed with Kubespray via the reset playbook.
The dark mode beta is finally here. Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. I am trying to set up a new kubernetes cluster on one machine with kubespray commit 7e84de2aefbeadcebdbc. After running the playbook on a fresh ubuntu The kubectl commands seem fine proxy works, listing pods etc. How should I go about debugging that? Is it an oversight in kubespray?
I need to set up a variable there? Is it related to RBAC? The dashboard pod is running with default service accountand that account by default dont have permissions, you can see the token of the default service account inside th dashboard pod:. The command you run in your answersets the required permisions for the default service account used by dashboard pod. Learn more. Asked 1 year, 5 months ago. Active 1 year, 5 months ago. Viewed times. Rico Active Oldest Votes.
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Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community. Already on GitHub? Sign in to your account. OS: Linux 3. Kubespray version commit git rev-parse --short HEAD : 2.
If so, I'm happy to submit a pull request. Skip to content. Dismiss Join GitHub today GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together.
New issue. Jump to bottom. Remove node remove-node. Copy link Quote reply. This comment has been minimized.
Sign in to view. Contributor Author. Yes I'm seeing this too. Fixes issue kubernetes-sigs This commit was created on GitHub.
Fix for issue Fixes issue This commit was signed with a verified signature. Seems fixed to me, thanks! Fixes issue kubernetes-sigs kubernetes-sigs In short; Kubernetes is not easy. Naturally then, the easiest way to use Kubernetes is to let someone else look after the infrastructure for you. Whilst these solutions do make it easier to consume Kubernetes for your workloads by abstracting away the management overheads, you may well need to maintain greater control over your data.
Whilst using the cloud is perfectly safe, this may not be something your security controls permit, making cloud-hosted options such as those mentioned above unviable. At this point, picking the right solution has become a little easier. This is especially important when interacting with Kubernetes, as the development moves fast and new features are added regularly.
With all this in mind, I ended up settling on Kubespray originally called Kargo. Kubespray is a Kubernetes incubator project, which means it is on its way to becoming a fully-fledged community project.
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I spend a fair bit of my own time working with Ansible, and as Kubespray is just a large set of playbooks, it was the obvious choice. Obviously this still requires access of some fashion; in my case my hosting provider Memset gives you the ability to inject an SSH key at provisioning time.
Once this is in place I can run my playbook to reconfigure the node as I see fit. The [all] group needs to contain all nodes in the cluster. If you wish to have them communicate over a different IP to the access IP then you can specify this using the ip variable. In my case, I have a VLAN between all 5 nodes and I want my internal cluster traffic to traverse this, rather than the public internet.
Any node in the kube-node group will be available for scheduling pods onto. In a larger cluster these nodes will purely function as minions, however in my case my masters are also minions too. Finally, the [etcd] group tells Ansible which nodes to deploy your etcd cluster onto. Kubernetes stores a lot of information in etcd so three nodes is good practise.
You could run with a single etcd node, but if that goes away then the entire cluster will grind to a halt. Unless you require some edge cases, the majority of all. The k8s-cluster. You then need to pick the version of Kubernetes to deploy, and set some passwords:. Next up, some networking config.
As is to be expected, there are a multitude of options when it comes to setting up networking in Kubernetes. Kubespray gives you a subset of these options; I chose to go with Weave as it means I can deploy Weave Scope at a later date.
The Netchecker deployment places pods on all hosts which constantly verify the state of the networking by attempting to communicate with each other.
In the root of the Kubespray checkout is cluster. Deployment is carried out the usual Ansible way:. The run-time of this playbook is very much dependent on a number of variables, such as the number of nodes and also how much Internet-connected bandwidth they have; for my nodes, it took around 20 minutes.
Before you can use your cluster, you need to configure access to it. During the cluster bootstrapping process, various SSL certificates will have been created which we can use to authenticate ourselves. Finally, ensure the server: variable is a URL by which you can talk to your master node.Welcome to the most active Linux Forum on the web. Welcome to LinuxQuestions. You are currently viewing LQ as a guest. By joining our community you will have the ability to post topics, receive our newsletter, use the advanced search, subscribe to threads and access many other special features.
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Kubespray – 10 Simple Steps for Installing a Production-Ready, Multi-Master HA Kubernetes Cluster
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Click Here to receive this Complete Guide absolutely free. Kubespray - Kubernetes master initialization failed. Hi everyone I am trying to deploy a multi-master cluster on our vsphere environment. I am following instructions from this github page. I now manually run kubespray to deploy the kubernetes cluster. How about simplifying a bit. Are you successful in deploying single master? From the log you posted, first thing that jumps out is network issue: Code:.