97 lines
3.3 KiB
Markdown
97 lines
3.3 KiB
Markdown
# Packet
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Kubespray provides support for bare metal deployments using the [Packet bare metal cloud](http://www.packet.com).
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Deploying upon bare metal allows Kubernetes to run at locations where an existing public or private cloud might not exist such
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as cell tower, edge collocated installations. The deployment mechanism used by Kubespray for Packet is similar to that used for
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AWS and OpenStack clouds (notably using Terraform to deploy the infrastructure). Terraform uses the Packet provider plugin
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to provision and configure hosts which are then used by the Kubespray Ansible playbooks. The Ansible inventory is generated
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dynamically from the Terraform state file.
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## Local Host Configuration
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To perform this installation, you will need a localhost to run Terraform/Ansible (laptop, VM, etc) and an account with Packet.
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In this example, we're using an m1.large CentOS 7 OpenStack VM as the localhost to kickoff the Kubernetes installation.
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You'll need Ansible, Git, and PIP.
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```bash
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sudo yum install epel-release
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sudo yum install ansible
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sudo yum install git
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sudo yum install python-pip
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```
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## Playbook SSH Key
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An SSH key is needed by Kubespray/Ansible to run the playbooks.
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This key is installed into the bare metal hosts during the Terraform deployment.
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You can generate a key new key or use an existing one.
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```bash
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ssh-keygen -f ~/.ssh/id_rsa
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```
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## Install Terraform
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Terraform is required to deploy the bare metal infrastructure. The steps below are for installing on CentOS 7.
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[More terraform installation options are available.](https://learn.hashicorp.com/terraform/getting-started/install.html)
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Grab the latest version of Terraform and install it.
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```bash
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echo "https://releases.hashicorp.com/terraform/$(curl -s https://checkpoint-api.hashicorp.com/v1/check/terraform | jq -r -M '.current_version')/terraform_$(curl -s https://checkpoint-api.hashicorp.com/v1/check/terraform | jq -r -M '.current_version')_linux_amd64.zip"
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sudo yum install unzip
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sudo unzip terraform_0.12.30_linux_amd64.zip -d /usr/local/bin/
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```
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## Download Kubespray
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Pull over Kubespray and setup any required libraries.
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```bash
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git clone https://github.com/kubernetes-sigs/kubespray
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cd kubespray
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sudo pip install -r requirements.txt
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```
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## Cluster Definition
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In this example, a new cluster called "alpha" will be created.
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```bash
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cp -LRp contrib/terraform/packet/sample-inventory inventory/alpha
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cd inventory/alpha/
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ln -s ../../contrib/terraform/packet/hosts
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```
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Details about the cluster, such as the name, as well as the authentication tokens and project ID
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for Packet need to be defined. To find these values see [Packet API Integration](https://support.packet.com/kb/articles/api-integrations)
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```bash
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vi cluster.tfvars
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```
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* cluster_name = alpha
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* packet_project_id = ABCDEFGHIJKLMNOPQRSTUVWXYZ123456
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* public_key_path = 12345678-90AB-CDEF-GHIJ-KLMNOPQRSTUV
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## Deploy Bare Metal Hosts
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Initializing Terraform will pull down any necessary plugins/providers.
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```bash
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terraform init ../../contrib/terraform/packet/
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```
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Run Terraform to deploy the hardware.
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```bash
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terraform apply -var-file=cluster.tfvars ../../contrib/terraform/packet
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```
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## Run Kubespray Playbooks
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With the bare metal infrastructure deployed, Kubespray can now install Kubernetes and setup the cluster.
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```bash
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ansible-playbook --become -i inventory/alpha/hosts cluster.yml
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```
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