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02-client-tools.md

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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

OS X users may experience problems using the pre-built binaries in which case Homebrew might be a better option:

brew install cfssl

Linux

wget -q --show-progress --https-only --timestamping \
  https://github.com/cloudflare/cfssl/releases/download/v1.4.1/cfssl_1.4.1_linux_amd64 \
  https://github.com/cloudflare/cfssl/releases/download/v1.4.1/cfssljson_1.4.1_linux_amd64
chmod +x cfssl_1.4.1_linux_amd64 cfssljson_1.4.1_linux_amd64
sudo mv cfssl_1.4.1_linux_amd64 /usr/local/bin/cfssl
sudo mv cfssljson_1.4.1_linux_amd64 /usr/local/bin/cfssljson

Windows

For windows on 64 bit use powershell, using administrative rights

PS C:\Windows\system32>Invoke-WebRequest -Uri https://github.com/cloudflare/cfssl/releases/download/v1.4.1/cfssl_1.4.1_windows_amd64.exe -OutFile cfssl.exe
PS C:\Windows\system32>Invoke-WebRequest -Uri https://github.com/cloudflare/cfssl/releases/download/v1.4.1/cfssljson_1.4.1_windows_amd64.exe -OutFile cfssljson.exe

Verification

Verify cfssl version 1.4.1 or higher is installed:

cfssl version

If this step fails with a runtime error, try installing cfssl following instructions on CloudFlare's repository

output

Version: 1.4.1
Revision: dev
Runtime: go1.13.4
cfssljson -version

output

Version: 1.4.1
Revision: dev
Runtime: go1.13.4

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

curl -LO "https://storage.googleapis.com/kubernetes-release/release/$(curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt)/bin/darwin/amd64/kubectl"
chmod +x ./kubectl
sudo mv ./kubectl /usr/local/bin/kubectl

Linux

curl -LO https://storage.googleapis.com/kubernetes-release/release/`curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt`/bin/linux/amd64/kubectl
chmod +x ./kubectl
sudo mv ./kubectl /usr/local/bin/kubectl

Windows

Note you need to have chocolately package manager installed first (https://chocolatey.org/)

PS C:\Windows\system32>choco install kubernetes-cli

Verification

Verify kubectl version 1.17.0 or higher is installed:

kubectl version --client

output

Client Version: version.Info{Major:"1", Minor:"17", GitVersion:"v1.17.3", GitCommit:"06ad960bfd03b39c8310aaf92d1e7c12ce618213", GitTreeState:"clean", BuildDate:"2020-02-13T18:08:14Z", GoVersion:"go1.13.8", Compiler:"gc", Platform:"darwin/amd64"}

To quick check kubectl version, you can also use the following command :

kubectl version --short

output

Client Version: v1.17.3

Next: Provisioning Compute Resources