sysctl: cannot stat /proc/sys/net/ipv4/netfilter/ip_conntrack_tcp_timeout_time_wait: No such file or directory

[mordf]

The following line in the Dockerfile:
sysctl -w net.ipv4.netfilter.ip_conntrack_tcp_timeout_time_wait="1"

Results in this error:
sysctl: cannot stat /proc/sys/net/ipv4/netfilter/ip_conntrack_tcp_timeout_time_wait: No such file or directory

from a short investigation, the following kernel module doesn't exist in this location, also all of the kernel modules aren't located under /var/lib/modules/$(uname -r) but in /sys/module

[pepov]

According to the docs net.* sysctls should be set through the securityContext of the Pod, but not guaranteed to work (depends on whether the cluster admin enabled it or not).

https://kubernetes.io/docs/tasks/administer-cluster/sysctl-cluster/#setting-sysctls-for-a-pod

[mordf]

This happens only when I run docker build
I didn’t even try to run helm install