Kubespray Installer

This script will clone kubespray automatically, and deploy production ready Kubernetes cluster by kubespray.

Install public key to target nodes

# ./copy-ssh-keys.sh <set_of_target_nodes>
./copy-ssh-keys.sh 192.168.0.1 192.168.0.2 192.168.0.3

# Assign customized username if username isn't cord
REMOTE_SSH_USER=ubuntu ./copy-ssh-keys.sh 192.168.0.1 192.168.0.2 192.168.0.3

# Select the desired public key (default: id_rsa.pub)
SSH_PUBKEY_PATH=~/.ssh/onoscorddev.pub ./copy-ssh-keys.sh 192.168.0.1 192.168.0.2 192.168.0.3

Then you are able to ssh into the target nodes without password, this is required by Kuberspray script.

Run the installation script

# ./setup -i <inventory_name> <set_of_target_nodes>
./setup -i pod1 192.168.0.1 192.168.0.2 192.168.0.3

# You can also pipe the output to stdout & file
./setup -i pod1 192.168.0.1 192.168.0.2 192.168.0.3 | tee /tmp/kubespray-installer.log

# Assign customized username
REMOTE_SSH_USER=ubuntu ./setup -i pod1 192.168.0.1 192.168.0.2 192.168.0.3

Now you should be able to use your newly installed kubernetes cluster.

Testing kubespray-installer in VM's

These scripts allow you to test a multi-node kubespray installer on a single machine, with additional disks attached for testing persistent storage.

Prepare test system

Run the kubespray-vagrant.sh script which will install all the necesary prerequisites and tools.

Only tested on an Ubuntu 16.04 machine, with a user that has passwordless sudo enabled. Works/tested on CloudLab.

Requires a considerable amount of CPU, RAM, and disk space - 3 VM's each with 8 cores, 16GB RAM, and multiple 40GB drives (sparsely allocated).

Bring up VM's

Check out automation_tools on the target system, then run the following to bring up VM's with vagrant:

vagrant up
vagrant ssh-config >> ~/.ssh/config
vagrant ssh-config | sed -e 's/Host k8s-0/Host 10.90.0.10/g' >> ~/.ssh/config

NOTE: If you tear down and rebuild the VM's in vagrant, you will need to delete the configuration of the previous VM's from ~/.ssh/config before running the vagrant ssh-config ... commands.

Run kubespray-installer/setup.sh script

REMOTE_SSH_USER="vagrant" ./setup.sh -i test

Copy config for k8s tools, bootstrap helm

mkdir ~/.kube/
cp inventories/test/artifacts/admin.conf ~/.kube/config

helm init --upgrade