What version is being used on AKS nodes? I checked both the 4.15 and 4.18 azure kernels and they have that sysfs file available:
user@x:~$ uname -r 4.15.0-1046-azure user@x:~$ cat /proc/sys/net/core/bpf_jit_enable 1 user@b:~$ uname -r 4.18.0-1019-azure user@b:~$ cat /proc/sys/net/core/bpf_jit_enable 1 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-azure in Ubuntu. https://bugs.launchpad.net/bugs/1827916 Title: Enable eBPF JIT in the linux-azure kernels Status in linux-azure package in Ubuntu: New Bug description: eBPF is available as of kernel version 4.15, which is used on AKS nodes. Enabling JIT eBPF (built-in kernel feature) will speed-up execution of eBPF aware tools. eBPF JIT is controlled by the file /proc/sys/net/core/bpf_jit_enable. More details for eBPF JIT - https://www.kernel.org/doc/Documentation/sysctl/net.txt The file /proc/sys/net/core/bpf_jit_enable is not present on AKS nodes. Also, to support eBPF in AKS, we are requesting to switch the mlx* and ib* drivers to loadable modules instead of static. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-azure/+bug/1827916/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
