Hi, I’m unable to get kubeadm init to run due to br_netfilter not being loaded within the container. How did you get past this? The module doesn’t appear to be available on Proxmox to be inherited within the container.

https://github.com/lxc/lxd/issues/3306

https://github.com/lxc/lxd/issues/5193

[root@Pluto ~]# kubeadm init
[init] using Kubernetes version: v1.12.1
[preflight] running pre-flight checks
[preflight] The system verification failed. Printing the output from the verification:
KERNEL_VERSION: 4.15.18-7-pve
DOCKER_VERSION: 18.06.1-ce
DOCKER_GRAPH_DRIVER: overlay2
OS: Linux
CGROUPS_CPU: enabled
CGROUPS_CPUACCT: enabled
CGROUPS_CPUSET: enabled
CGROUPS_DEVICES: enabled
CGROUPS_FREEZER: enabled
CGROUPS_MEMORY: enabled
[preflight] Some fatal errors occurred:
 [ERROR FileContent--proc-sys-net-bridge-bridge-nf-call-iptables]: /proc/sys/net/bridge/bridge-nf-call-iptables does not exist
 [ERROR SystemVerification]: failed to parse kernel config: unable to load kernel module "configs": output - "", err - exit status 1
[preflight] If you know what you are doing, you can make a check non-fatal with `--ignore-preflight-errors=...`