Installing the Client Tools

In this lab you will install the command line utilities required to complete this tutorial: cfssl, cfssljson, and kubectl.

Install CFSSL

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:

OS X

wget -q --show-progress --https-only --timestamping \
  https://pkg.cfssl.org/R1.2/cfssl_darwin-amd64 \
  https://pkg.cfssl.org/R1.2/cfssljson_darwin-amd64

chmod +x cfssl_darwin-amd64 cfssljson_darwin-amd64

sudo mv cfssl_darwin-amd64 /usr/local/bin/cfssl

sudo mv cfssljson_darwin-amd64 /usr/local/bin/cfssljson

Linux

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

Verification

Verify cfssl version 1.2.0 or higher is installed:

cfssl version

output

Version: 1.2.0
Revision: dev
Runtime: go1.6

The cfssljson command line utility does not provide a way to print its version.

Install kubectl

The kubectl command line utility is used to interact with the Kubernetes API Server. Download and install kubectl from the official release binaries:

OS X

wget https://storage.googleapis.com/kubernetes-release/release/v1.7.4/bin/darwin/amd64/kubectl

chmod +x kubectl

sudo mv kubectl /usr/local/bin/

Linux

wget https://storage.googleapis.com/kubernetes-release/release/v1.7.4/bin/linux/amd64/kubectl

chmod +x kubectl

sudo mv kubectl /usr/local/bin/

Verification

Verify kubectl version 1.7.4 or higher is installed:

kubectl version --client

output

Client Version: version.Info{Major:"1", Minor:"7", GitVersion:"v1.7.4", GitCommit:"793658f2d7ca7f064d2bdf606519f9fe1229c381", GitTreeState:"clean", BuildDate:"2017-08-17T08:48:23Z", GoVersion:"go1.8.3", Compiler:"gc", Platform:"darwin/amd64"}

Next: Provisioning Compute Resources