Dustin C. Hatch
0f600b9e6e
So far, I have been managing Kubernetes worker nodes with Fedora CoreOS Ignition, but I have decided to move everything back to Fedora and Ansible. I like the idea of an immutable operating system, but the FCOS implementation is not really what I want. I like the automated updates, but that can be accomplished with _dnf-automatic_. I do _not_ like giving up control of when to upgrade to the next Fedora release. Mostly, I never did come up with a good way to manage application-level configuration on FCOS machines. None of my experiments (Cue+tmpl, KCL+etcd+Luci) were successful, which mostly resulted in my manually managing configuration on nodes individually. Managing OS-level configuration is also rather cumbersome, since it requires redeploying the machine entirely. Altogether, I just don't think FCOS fits with my model of managing systems. This commit introduces a new playbook, `kubernetes.yml`, and a handful of new roles to manage Kubernetes worker nodes running Fedora Linux. It also adds two new deploy scripts, `k8s-worker.sh` and `k8s-longhorn.sh`, which fully automate the process of bringing up worker nodes.
46 lines
893 B
Bash
46 lines
893 B
Bash
#!/bin/sh
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# vim: set ts=4 sw=4 noet :
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name=${1:-stor-$(diceware -n1 --no-caps)}
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hostname=${name}.k8s.pyrocufflink.black
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if ! virsh list --all --name | grep -qF ${name}; then
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./newvm.sh ${name} \
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--fedora 40 \
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--memory 4096 \
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--vcpus 4 \
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--no-console \
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--network network=kube \
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-- \
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--disk pool=default,size=4,cache=none \
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--disk pool=default,size=8,cache=none \
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--disk pool=default,size=512,cache=none \
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|| exit
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sleep 15
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fi
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if ! grep -q "${hostname}" hosts; then
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sed -i '/\[k8s-longhorn\]/a'"${hostname}" hosts
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fi
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ansible-playbook \
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-l ${hostname} \
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wait-for-host.yml \
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|| exit
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printf 'Waiting for SSH host certificate to be signed ... '
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until ssh-keyscan -c ${hostname} 2>/dev/null | grep -q cert; do
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sleep 1
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done
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echo done
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ansible-playbook \
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-l ${hostname} \
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bootstrap.yml \
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datavol.yml \
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kubernetes.yml \
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collectd.yml \
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btop.yml \
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-u root \
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|| exit
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