In this lab you will install the command line utilities required to complete this tutorial: cfssl, cfssljson, and kubectl.
The cfssl and cfssljson command line utilities will be used to provision a PKI Infrastructure and generate TLS certificates.
Download and install cfssl and cfssljson from the cfssl repository:
curl -o cfssl https://pkg.cfssl.org/R1.2/cfssl_darwin-amd64
curl -o cfssljson https://pkg.cfssl.org/R1.2/cfssljson_darwin-amd64
chmod +x cfssl cfssljson
sudo mv cfssl cfssljson /usr/local/bin/
Some OS X users may experience problems using the pre-built binaries in which case Homebrew might be a better option:
brew install cfssl
wget -q --show-progress --https-only --timestamping \
https://pkg.cfssl.org/R1.2/cfssl_linux-amd64 \
https://pkg.cfssl.org/R1.2/cfssljson_linux-amd64
chmod +x cfssl_linux-amd64 cfssljson_linux-amd64
sudo mv cfssl_linux-amd64 /usr/local/bin/cfssl
sudo mv cfssljson_linux-amd64 /usr/local/bin/cfssljson
Verify cfssl version 1.2.0 or higher is installed:
cfssl version
output
Version: 1.3.4
Revision: dev
Runtime: go1.12.7
The cfssljson command line utility does not provide a way to print its version.
The kubectl command line utility is used to interact with the Kubernetes API Server. Download and install kubectl from the official release binaries:
curl -o kubectl https://storage.googleapis.com/kubernetes-release/release/v1.15.0/bin/darwin/amd64/kubectl
chmod +x kubectl
sudo mv kubectl /usr/local/bin/
wget https://storage.googleapis.com/kubernetes-release/release/v1.15.0/bin/linux/amd64/kubectl
chmod +x kubectl
sudo mv kubectl /usr/local/bin/
Verify kubectl version 1.15.0 or higher is installed:
kubectl version --client
output
Client Version: version.Info{Major:"1", Minor:"15", GitVersion:"v1.15.0", GitCommit:"e8462b5b5dc2584fdcd18e6bcfe9f1e4d970a529", GitTreeState:"clean", BuildDate:"2019-06-20T04:49:16Z", GoVersion:"go1.12.6", Compiler:"gc", Platform:"darwin/amd64"}