Contiv-VPP is an alternative to have use-space data plane for K3s. And I tried to install Contiv-VPP on K3s with default configuration. When I finished installation, realized Pods on K3s failed to create Pod networking interface with Contiv-VPP CNI. After some investigation on Contiv-VPP along with source code. I realized containerd as default container runtime of K3s was not supported by Contiv-VPP due to naming of network namespace is different between containerd and docker (here and here). So docker is required as container runtime if you would like to enable Contiv-VPP as CNI. By default, fannel is used as CNI plugin on K3s. K3s provides a confiugration during installation: --flannel-backend=none. So the command to install K3s should be:

$ curl -sfL https://get.k3s.io | INSTALL_K3S_EXEC="server --flannel-backend=none" sh -s - --docker

Since Contiv-VPP uses DPDK as its underlying library for process packets from NICs. Needs to make sure hugepages is enabled on host. The following command could be used to enable it (need to restart K3s):

$ sudo sysctl -w vm.nr_hugepages=512

Recently, I registered IPv6 service for my home network from my ISP (i.e., HiNet). HiNet provides at least two ways to get the global IPv6 prefix.

Recently, I found that tcpdump could be used to receive NFLOG packets. But this feature is not out-of-box available for Ubuntu users due to apparmor configuration.

The Juniper NetConnect only works with 32-bits JRE. In order to load NetConnect in 64-bits platform you have install 32-bits JRE.

Years ago, I found a macro substitution issue when I was using stringify macro. See the exacmple code listed as below:

There is a VIM plugin for Jekyll called jekyll.vim.

Introduction

This is my first post of Jekyll. This tool is awesome!