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Is anyone has a solution/tool to run easily kubernetes on a single bare metal server? Kubernetes or anything other docker container "orchestration" tool. Tried

Is anyone has a solution/tool to run easily kubernetes on a single bare metal server? Kubernetes or anything other docker container "orchestration" tool. Tried to google (certainly wrong keywords), and found some quite complex process, or maintained tools that are mainly for aws/gcp

kryptk 8y ago
Minikube works great to get your feet wet, but it's not suitable for anything except a playground.
- dboreham 8y ago
  Minikube is a VM, so not the bare metal solution requested.
  - rraghur 8y ago
    minikube start --vm-driver=none doesn't use a VM AFAIK
dboreham 8y ago
The best place to start is here (which unfortunately won't show up in any relevant Google search) : https://kubernetes.io/docs/setup/independent/create-cluster-kubeadm/ https://kubernetes.io/docs/setup/independent/create-cluster-...
tetraodonpuffer 8y ago
not sure if you would classify it as a complex process, but I have a series of posts in my blog (link in my profile) that takes you from a bare metal box to a k8s cluster running on Xen on it: a lot of it is explaining how things work, so it is a bit verbose, but it hopefully should not be too hard to follow, given that it walks you through setting up Xen, then CoreOS, then etcd and finally Kubernetes it does take several posts...
bryanlarsen 8y ago
kubeadm. Pretty much any other recommendation (such as minikube or kubespray) is just using kubeadm under the hood. They still exist because they add something that kubeadm is missing. Like cluster support, specific cloud support, or VM/dev. But you don't need any of those, so kubeadm is what you want.
raesene9 8y ago
Kubeadm works just fine with a single node configuration, you just need to untaint the master so it can run non-control plane components. https://www.mirantis.com/blog/how-install-kubernetes-kubeadm/ https://www.mirantis.com/blog/how-install-kubernetes-kubeadm... has a decent step-by-step. It's mostly just the standard install but they have details on the untaint bit too.
gnufied 8y ago
There is `./hack/local-cluster-up.sh` if you download the source code of Kubernetes, which will give you a local baremetal cluster. The one caveat is, when you shutdown the cluster all files will be deleted. There is also "./cluster/get-kube-local.sh" that is supposed to give you a working local cluster. But it appears to be broken right now. Might be worth opening a GH issue for that.
striking 8y ago
If you want just one server, minikube is probably the way to go, even if it does run in a VM. Otherwise, use https://kubernetes.io/docs/setup/independent/create-cluster-kubeadm/ https://kubernetes.io/docs/setup/independent/create-cluster-... to set up a cluster (one node or otherwise). I used flannel as pod networking, as it's really simple. If you want to run app pods on your master node, remember to untaint it. ingress-nginx is probably your best bet as an ingress controller, especially because of the amount of support given it by the k8s Slack. It is a non-zero amount of work. If it sounds like too much work for something you're throwing together, it probably is. It is generally unnecessary.

kryptk 8y ago

Minikube works great to get your feet wet, but it's not suitable for anything except a playground.

dboreham 8y ago
Minikube is a VM, so not the bare metal solution requested.
- rraghur 8y ago
  minikube start --vm-driver=none doesn't use a VM AFAIK

dboreham 8y ago

The best place to start is here (which unfortunately won't show up in any relevant Google search) : https://kubernetes.io/docs/setup/independent/create-cluster-kubeadm/ https://kubernetes.io/docs/setup/independent/create-cluster-...

tetraodonpuffer 8y ago

not sure if you would classify it as a complex process, but I have a series of posts in my blog (link in my profile) that takes you from a bare metal box to a k8s cluster running on Xen on it: a lot of it is explaining how things work, so it is a bit verbose, but it hopefully should not be too hard to follow, given that it walks you through setting up Xen, then CoreOS, then etcd and finally Kubernetes it does take several posts...

bryanlarsen 8y ago

kubeadm. Pretty much any other recommendation (such as minikube or kubespray) is just using kubeadm under the hood. They still exist because they add something that kubeadm is missing. Like cluster support, specific cloud support, or VM/dev. But you don't need any of those, so kubeadm is what you want.

raesene9 8y ago

Kubeadm works just fine with a single node configuration, you just need to untaint the master so it can run non-control plane components. https://www.mirantis.com/blog/how-install-kubernetes-kubeadm/ https://www.mirantis.com/blog/how-install-kubernetes-kubeadm... has a decent step-by-step. It's mostly just the standard install but they have details on the untaint bit too.

gnufied 8y ago

There is `./hack/local-cluster-up.sh` if you download the source code of Kubernetes, which will give you a local baremetal cluster. The one caveat is, when you shutdown the cluster all files will be deleted. There is also "./cluster/get-kube-local.sh" that is supposed to give you a working local cluster. But it appears to be broken right now. Might be worth opening a GH issue for that.

striking 8y ago

If you want just one server, minikube is probably the way to go, even if it does run in a VM. Otherwise, use https://kubernetes.io/docs/setup/independent/create-cluster-kubeadm/ https://kubernetes.io/docs/setup/independent/create-cluster-... to set up a cluster (one node or otherwise). I used flannel as pod networking, as it's really simple. If you want to run app pods on your master node, remember to untaint it. ingress-nginx is probably your best bet as an ingress controller, especially because of the amount of support given it by the k8s Slack. It is a non-zero amount of work. If it sounds like too much work for something you're throwing together, it probably is. It is generally unnecessary.