69 lines
No EOL
2.4 KiB
Markdown
69 lines
No EOL
2.4 KiB
Markdown
Getting started
|
|
===============
|
|
|
|
The easiest way to run the deployement is to use the **kubespray-cli** tool.
|
|
A complete documentation can be found in its [github repository](https://github.com/kubespray/kubespray-cli).
|
|
|
|
Here is a simple example on AWS:
|
|
|
|
* Create instances and generate the inventory
|
|
|
|
```
|
|
kubespray aws --instances 3
|
|
```
|
|
|
|
* Run the deployment
|
|
|
|
```
|
|
kubespray deploy --aws -u centos -n calico
|
|
```
|
|
|
|
Building your own inventory
|
|
---------------------------
|
|
|
|
Ansible inventory can be stored in 3 formats: YAML, JSON, or INI-like. There is
|
|
an example inventory located
|
|
[here](https://github.com/kubernetes-incubator/kubespray/blob/master/inventory/inventory.example).
|
|
|
|
You can use an
|
|
[inventory generator](https://github.com/kubernetes-incubator/kubespray/blob/master/contrib/inventory_builder/inventory.py)
|
|
to create or modify an Ansible inventory. Currently, it is limited in
|
|
functionality and is only use for making a basic Kubespray cluster, but it does
|
|
support creating large clusters. It now supports
|
|
separated ETCD and Kubernetes master roles from node role if the size exceeds a
|
|
certain threshold. Run inventory.py help for more information.
|
|
|
|
Example inventory generator usage:
|
|
|
|
```
|
|
cp -r inventory my_inventory
|
|
declare -a IPS=(10.10.1.3 10.10.1.4 10.10.1.5)
|
|
CONFIG_FILE=my_inventory/inventory.cfg python3 contrib/inventory_builder/inventory.py ${IPS[@]}
|
|
```
|
|
|
|
Starting custom deployment
|
|
--------------------------
|
|
|
|
Once you have an inventory, you may want to customize deployment data vars
|
|
and start the deployment:
|
|
|
|
**IMPORTANT: Edit my_inventory/groups_vars/*.yaml to override data vars**
|
|
|
|
```
|
|
ansible-playbook -i my_inventory/inventory.cfg cluster.yml -b -v \
|
|
--private-key=~/.ssh/private_key
|
|
```
|
|
|
|
See more details in the [ansible guide](ansible.md).
|
|
|
|
Adding nodes
|
|
--------------------------
|
|
|
|
You may want to add worker nodes to your existing cluster. This can be done by re-running the `cluster.yml` playbook, or you can target the bare minimum needed to get kubelet installed on the worker and talking to your masters. This is especially helpful when doing something like autoscaling your clusters.
|
|
|
|
- Add the new worker node to your inventory under kube-node (or utilize a [dynamic inventory](https://docs.ansible.com/ansible/intro_dynamic_inventory.html)).
|
|
- Run the ansible-playbook command, substituting `scale.yml` for `cluster.yml`:
|
|
```
|
|
ansible-playbook -i my_inventory/inventory.cfg scale.yml -b -v \
|
|
--private-key=~/.ssh/private_key
|
|
``` |