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Also adds calico-rr group if there are standalone etcd nodes. Now if there are 50 or more nodes, 3 etcd nodes will be standalone. If there are 200 or more nodes, 2 kube-masters will be standalone. If thresholds are exceeded, kube-node group cannot add nodes that belong to etcd or kube-master groups (according to above statements).
56 lines
1.7 KiB
Markdown
56 lines
1.7 KiB
Markdown
Getting started
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===============
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The easiest way to run the deployement is to use the **kargo-cli** tool.
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A complete documentation can be found in its [github repository](https://github.com/kubespray/kargo-cli).
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Here is a simple example on AWS:
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* Create instances and generate the inventory
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```
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kargo aws --instances 3
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```
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* Run the deployment
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```
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kargo deploy --aws -u centos -n calico
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```
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Building your own inventory
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---------------------------
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Ansible inventory can be stored in 3 formats: YAML, JSON, or inifile. There is
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an example inventory located
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[here](https://github.com/kubernetes-incubator/kargo/blob/master/inventory/inventory.example).
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You can use an
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[inventory generator](https://github.com/kubernetes-incubator/kargo/blob/master/contrib/inventory_builder/inventory.py)
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to create or modify an Ansible inventory. Currently, it is limited in
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functionality and is only use for making a basic Kargo cluster, but it does
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support creating large clusters. It now supports
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separated ETCD and Kubernetes master roles from node role if the size exceeds a
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certain threshold. Run inventory.py help for more information.
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Example inventory generator usage:
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```
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cp -r inventory my_inventory
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declare -a IPS=(10.10.1.3 10.10.1.4 10.10.1.5)
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CONFIG_FILE=my_inventory/inventory.cfg python3 contrib/inventory_builder/inventory.py ${IPS}
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```
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Starting custom deployment
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--------------------------
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Once you have an inventory, you may want to customize deployment data vars
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and start the deployment:
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```
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# Edit my_inventory/groups_vars/*.yaml to override data vars
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ansible-playbook -i my_inventory/inventory.cfg cluster.yaml -b -v \
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--private-key=~/.ssh/private_key
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```
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See more details in the [ansible guide](ansible.md).
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