[Feature request] kernel options to allow Kubernetes K3s

[mossroy]

As Docker is already available on LibreELEC (through the add-on), I investigated if it was possible to run k3s (lightweight Kubernetes distribution).
My intention is to make my LibreELEC machine part of a self-hosted k3s cluster. It would take advantage of the power and capabilities of the machine to run some self-hosted services.

I managed to make it run (currently with some dirty hacks). See k3s-io/k3s#4859

But I had to recompile LibreELEC, after adding several kernel options, on branch libreelec-10.0.

Here are the needed kernel options :

• CONFIG_CGROUP_PIDS
• CONFIG_USER_NS
• CONFIG_NETFILTER_XT_MARK
• CONFIG_NETFILTER_XT_CONNMARK
• CONFIG_NETFILTER_XT_TARGET_CONNMARK
• CONFIG_NETFILTER_XT_TARGET_MARK
• CONFIG_NETFILTER_XT_TARGET_NFLOG
• CONFIG_NETFILTER_XT_MATCH_COMMENT
• CONFIG_NETFILTER_XT_MATCH_LIMIT
• CONFIG_NETFILTER_XT_MATCH_MARK
• CONFIG_NETFILTER_XT_MATCH_MULTIPORT
• CONFIG_NETFILTER_XT_MATCH_PHYSDEV
• CONFIG_NETFILTER_XT_MATCH_STATISTIC
• CONFIG_IP_SET
• CONFIG_IP_VS
• CONFIG_IP_VS_RR
• CONFIG_IP_VS_WRR
• CONFIG_IP_VS_SH
• CONFIG_BRIDGE_VLAN_FILTERING
• CONFIG_VXLAN

I also had to workaround the fact that the root filesystem is a read-only squashfs, but I understand it's certainly by design to allow easier upgrades of LE.

NB : I did that on an amd64 machine, but it would probably work on most other architectures too : k3s also supports armhf and arm64

[chewitt]

Closing as per comment here #6100 (comment)