VMs not reboot persistent - kubelet not starting because of swap

[twillert]

Hi,
thanks for sharing this!

After setting up a working cluster the individual VMs are not reboot safe. After a reboot the kubelet was not start because of swap being enabled. The playbooks does a 'swapoff -a' which is not persistent.

One way of diabling swap in a persistent way would be to create a SystemD service to turn it off before starting Kubelet. Like this:

# /etc/systemd/system/swapoff.service

[Unit]
Description=Swapoff, kubelet requirement
After=network.target
Before=kubelet.service

[Service]
Type=oneshot
ExecStart=/sbin/swapoff -a
RemainAfterExit=true

[Install]
WantedBy=multi-user.target

Where would be the best place in the code to implement this? I would be happy to give a pull request a shot.

Cheers,
Thomas

[kairen]

Hi @twillert, thank you for your report, I think you can implement this in k8s-setup role.

[kairen]

fixed #147 .