Kubernetes Cluster

With this code you will be able to deploy y aws a Kubernetes cluster with 3 masters deployed in three different availability zones in the selected region. Also, you can include as many slaves as you want spread on those three availability zones.

Prerequisite

Tools needed to use and work on this project.

• AWS Cli (http://docs.aws.amazon.com/cli/latest/userguide/installing.html)
• kubectl (https://kubernetes.io/docs/tasks/tools/install-kubectl/)
• kops (https://github.com/kubernetes/kops#installing)

Configure AWS Cli

Run this command to configure your credentials and profile to be used by AWS Cli and Kops.

aws configure  

Creating a Kubernetes Cluster

1- Create Hosted Zone, ensure the DNS is resolvable from your computer.

aws route53 create-hosted-zone --name <HOSTED_ZONE_NAME> --caller-reference <CALLER_REFERENCE>

Where:

• HOSTED_ZONE_NAME: The name of the domain. For resource record types that include a domain name, specify a fully qualified domain name, for example, www.example.com. The trailing dot is optional; Amazon Route 53 assumes that the domain name is fully qualified. This means that Amazon Route 53 treats www.example.com (without a trailing dot) and www.example.com. (with a trailing dot) as identical. If you're creating a public hosted zone, this is the name you have registered with your DNS registrar. If your domain name is registered with a registrar other than Amazon Route 53, change the name servers for your domain to the set of NameServers that create-hosted-zone returns in DelegationSet.
• CALLER_REFERENCE: A unique string that identifies the request and that allows failed create-hosted-zone requests to be retried without the risk of executing the operation twice. You must use a unique CallerReference string every time you submit a create-hosted-zone request. CallerReference can be any unique string, for example, a date/time stamp.

2- Create S3 Bucket

aws s3api create-bucket --bucket <BUCKET_NAME> --region <AWS_REGION> --acl private

• BUCKET_NAME: String containing the name of the bucket.
• AWS_REGION: Region to create the bucket.

Export KOPS_STATE_STORE variable. A valid value follows the format s3://

export KOPS_STATE_STORE=s3://<bucket>

3- Create and fill properties file with your values.

• Create a new yml file including all the properties listed in cluster_properties.yml.
• Edit the new file with your values.

4- Create template with properties values.

mkdir tmp  
kops toolbox template --template cluster_template.yml --values cluster_default_properties.yml --values <YOUR_PROPERTIES_FILE>.yml --format-yaml=true >> ./tmp/tmp_template.yml  

5- Create Kubernetes cluster. The following command will create a new cluster with name equals to HOSTED_ZONE_NAME.

kops create -f ./tmp/tmp_template.yml

6- Deploy cluster resources

kops update cluster <HOSTED_ZONE_NAME> --yes

7- Create SSH Public Key in AWS

kops create secret --name <HOSTED_ZONE_NAME> sshpublickey admin -i <SSH_PUBLIC>
kops update cluster <HOSTED_ZONE_NAME> --yes

8- Export configuration to use this cluster as default in kubectl

kops export kubecfg cl10.glb.southwest-aws.com

9- Delete the cluster

kops delete cluster --name=<HOSTED_ZONE_NAME> --yes