Cilium LABs with Kind

This is based on https://github.com/chornberger-c2c/isovalent-cilium-lab/blob/main/lab.md with minor changes and all the steps together for easy follow-up. More stuff will be added soon.

Why?

I know that Cilium offers hosted LABs for free, but here I'm just trying to play with the labs in a different way and without time constrain for lab completion.

pre-requesities.

For all the LABs in this repo you will need Docker, Kind, kubectl and kind-cli.

Docker installation.

Add the repo to your system.

Note that the following installation is for Debian, installing docker in Ubuntu is sligthly different, for more information check de offical docker installation guide for ubuntu

# Add Docker's official GPG key:
sudo apt-get update
sudo apt-get install ca-certificates curl
sudo install -m 0755 -d /etc/apt/keyrings
sudo curl -fsSL https://download.docker.com/linux/debian/gpg -o /etc/apt/keyrings/docker.asc
sudo chmod a+r /etc/apt/keyrings/docker.asc

# Add the repository to Apt sources:
echo \
  "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.asc] https://download.docker.com/linux/debian \
  $(. /etc/os-release && echo "$VERSION_CODENAME") stable" | \
  sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
sudo apt-get update

Install the package.

sudo apt-get install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin

Add your user to the Docker group.

sudo adduser <user> docker

Test your Docker installation.

sudo docker run hello-world

Kind Installation.

# see https://kind.sigs.k8s.io/docs/user/quick-start#installation
# For AMD64 / x86_64
[ $(uname -m) = x86_64 ] && curl -Lo ./kind https://kind.sigs.k8s.io/dl/v0.20.0/kind-linux-amd64
# For ARM64
[ $(uname -m) = aarch64 ] && curl -Lo ./kind https://kind.sigs.k8s.io/dl/v0.20.0/kind-linux-arm64
chmod +x kind
mv kind ~/bin  

make sure that you have ~/bin/ in your $PATH

Inotify Settings.

# see https://kind.sigs.k8s.io/docs/user/known-issues/#pod-errors-due-to-too-many-open-files
sudo echo "fs.inotify.max_user_watches=524288 " >> /etc/sysctl.conf 
sudo echo "fs.inotify.max_user_instances=512 "  >> /etc/sysctl.conf  
sudo sysctl -p 

kubectl

You need the kubectl binary to interact with K8s.

curl -LO "https://dl.k8s.io/release/$(curl -L -s https://dl.k8s.io/release/stable.txt)/bin/linux/amd64/kubectl"
chmod +x kubectl
mv ./kubectl ~/bin/kubectl

Cilium CLI Tool.

You need to install the cilium cli tool, in this case is easier to use the cilium cli instead of Helm.

CILIUM_CLI_VERSION=$(curl -s https://raw.githubusercontent.com/cilium/cilium-cli/main/stable.txt)
CLI_ARCH=amd64
if [ "$(uname -m)" = "aarch64" ]; then CLI_ARCH=arm64; fi
curl -L --fail --remote-name-all https://github.com/cilium/cilium-cli/releases/download/${CILIUM_CLI_VERSION}/cilium-linux-${CLI_ARCH}.tar.gz{,.sha256sum}
sha256sum --check cilium-linux-${CLI_ARCH}.tar.gz.sha256sum
sudo tar xzvfC cilium-linux-${CLI_ARCH}.tar.gz /usr/local/bin
rm cilium-linux-${CLI_ARCH}.tar.gz{,.sha256sum}

cilium version --client

Make sure you install cilium-cli v0.15.0 or later.

Next steps.

Now you can continue to one of the fallowing configuration for testing different componentes of Cilium.

beginner lab

For a basic lab configuration go to beginner/

BGP lab

For BGP specific lab configuration go to bgp/

Mesh lab

If you want to do some Mesh go to mesh/