Docs for creation lab K8s - #849
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knopers8
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knopers8
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again, some comments for migrating this to ansible.
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| - Verify all required kernel modules are loaded | ||
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| RHEL 10 can have problems with having all required kernel modules, you can check: |
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I'm not sure where this comes from, can't find corresponding advice in the k8s doc and I didn't have to do any of this when installing. When migrating to an ansible playbook, I would try first without.
Maybe it comes from Calico?
| RHEL 10 is running cgroups v2 as a default, so we need containerd to use systemd as cgroups driver so add following to the | ||
| `/etc/containerd/config.toml` together with some other changes (like bin dir and other), contents of the config.toml are: | ||
| ``` | ||
| cat /etc/containerd/config.toml |
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i'd use v3, probably more future-proof:
version = 3
[plugins]
[plugins."io.containerd.cri.v1.images"]
pinned_images = { sandbox = "registry.k8s.io/pause:3.10" }
[plugins."io.containerd.cri.v1.runtime"]
[plugins."io.containerd.cri.v1.runtime".cni]
bin_dir = "/usr/libexec/cni/"
conf_dir = "/etc/cni/net.d"
[plugins."io.containerd.cri.v1.runtime".containerd.runtimes.runc]
[plugins."io.containerd.cri.v1.runtime".containerd.runtimes.runc.options]
SystemdCgroup = true
[plugins."io.containerd.internal.v1.opt"]
path = "/var/lib/containerd/opt"
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| # To init Control plane node | ||
| - Open following ports: [k8s](https://kubernetes.io/docs/reference/networking/ports-and-protocols/), [calico](https://docs.tigera.io/calico-enterprise/latest/operations/troubleshoot/troubleshooting) |
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that page in calico does not list any ports
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| The reason why cluster is responding NotReady is that we have no network plugin. | ||
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| - Calico |
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I think we could go with Cilium, since ATLAS have experience with both and picked it. They measured that Cilium scales much better with number of Pods (quadratic vs linear, IIRC). I would not diverge at this point unless we have a reason for it.
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