Note

Prerequisites

1. install python-pip & python3-pip & ansible

   1. python-pip

      • Access https://www.python.org, download python and install it.

      • Once the installation is done, Check below command.

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        $ python3 --version
        Python 3.7.4
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   2. python3-pip

      • Download get-pip.py file

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        curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py
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      • Then run the following

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        python get-pip.py
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   3. ansible

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      brew install ansible
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Settings

1. clone the kubespray repository

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   $ git clone https://github.com/kubernetes-sigs/kubespray.git
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2. execute follow the command.

   sudo pip install -r requirements.txt
    
   cp -rfp inventory/sample inventory/mycluster
    
   declare -a IPS=(10.10.1.3 10.10.1.4 10.10.1.5) // cluster ips
    
   CONFIG_FILE=inventory/mycluster/hosts.yml python3 contrib/inventory_builder/inventory.py ${IPS[@]}
    
   cat inventory/mycluster/group_vars/all/all.yml
   cat inventory/mycluster/group_vars/k8s-cluster/k8s-cluster.yml
    
   ansible-playbook -i inventory/mycluster/hosts.yml --become --become-user=root cluster.yml
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3. if you encounter an error with ruamel.yaml during the process, then you should install ruamel.yaml using pip.

   sudo pip install ruamel.yaml
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Check out

root@node1:~# kubectl version
Client Version: version.Info{Major:"1", Minor:"15", GitVersion:"v1.15.0", GitCommit:"e8462b5b5dc2584fdcd18e61cfe9f1e4d970a529", GitTreeState:"clean", BuildDate:"2019-07-19T16:32:14Z", GoVersion:"go1.12.5", Compiler:"gc", Platform:"linux/amd64"}
Server Version: version.Info{Major:"1", Minor:"15", GitVersion:"v1.15.0", GitCommit:"e8462b5b5dc2584fdcd18e63cfe9f1e4d970a529", GitTreeState:"clean", BuildDate:"2019-07-19T16:32:14Z", GoVersion:"go1.12.5", Compiler:"gc", Platform:"linux/amd64"}
 
 
root@node1:~# kubectl get nodes
NAME    STATUS   ROLES    AGE   VERSION
node1   Ready    master   11m   v1.12.3
node2   Ready    master   12m   v1.12.3
node3   Ready    <none>   11m   v1.12.3
node4   Ready    <none>   11m   v1.12.3
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