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:
These are running as non-root user on localhost (not one of the cluster nodes), under some work directory.
wget \
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
mv cfssl_linux-amd64 cfssl
mv cfssljson_linux-amd64 cfssljson
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.
The kubectl command line utility is used to interact with the Kubernetes API Server. Download and install kubectl from the official release binaries:
wget https://storage.googleapis.com/kubernetes-release/release/v1.12.0/bin/linux/amd64/kubectl
chmod +x kubectl
Verify kubectl version 1.12.0 or higher is installed:
./kubectl version --client
output
Client Version: version.Info{Major:"1", Minor:"12", GitVersion:"v1.12.0", GitCommit:"0ed33881dc4355495f623c6f22e7dd0b7632b7c0", GitTreeState:"clean", BuildDate:"2018-09-27T17:05:32Z", GoVersion:"go1.10.4", Compiler:"gc", Platform:"linux/amd64"}