Kubernetes cluster with Kubernetes Dashboard setup locally on Ubuntu using Ansible
First thing first, Please clone the repository to download the code locally.
git clone https://github.com/hussainaphroj/kubernetes-cluster-setup.git
Optionally, you can create 3 Ubuntu machines by using Vagrantfile but you have to install the Virtualbox and Vagrant on your system before creating the machines.
Once the installation of Virtualbox and Vagrant finishes, browse to clone directory and run vagrant up . This will create the 3 machines. You can change the IP, Hostname in the given Vagrantfile
I have assumed that you have already set up the Ansible server, if you haven't then please set the Ansible first.
Before running the ansible-playbook, please edit the give host and kube.yml with your IP addresses of the system.
I have used the following IP and variables name in the host file.
master ansible_host=192.168.56.80 master="true"
node1 ansible_host=192.168.56.81 master="false"
node2 ansible_host=192.168.56.82 master="false"
Where master, node1 and node2 are the hostname and last master variable decide which server will be master node based true values. master server will be the kubernetes master in my case.
We have only 2 variables in our playbook
vars:
node_port: '192.168.56.80'
user: 'vagrant'
node_port: IP address of our kubernetes master server
user: Name of a local user on each node and make sure it's home directory should be present and it has sudo permission.
We have completed all the prerequisites and it's time to play now. Run the ansible-playbook as:
ansible-playbook -i host kube.yml -u vagrant --ask-pass -b
Where vagrant is the name of the user who has sudo access to the system. You can use --ask-become-pass if your user requires password to become sudo.
Once the Ansible-plabook runs successfully, you will have your cluster ready and can be verified login to your master server by running kubectl get nodes
Please note that I have used the nodeport type for dashboard service so you can get your port for that service using kubectl get services -n kubernetes-dashboard and used master IP and port to access the dashboard. It is https://192.168.56.80:30319 in my case.
The kubernetes dashboard require token to logi, so you can get the token from master using kubectl -n kubernetes-dashboard get secret $(kubectl -n kubernetes-dashboard get sa/admin-user -o jsonpath="{.secrets[0].name}") -o go-template="{{.data.token | base64decode}}"
That's all my friends!!! start using your Kubernetes cluster and keep your eyes on this space, I will be posting the Kubernetes related stuff here!
Happy Learning!!!