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kargo-kube

Overview

This set of templates uses the heat-lib library of files to deploy a kubernetes cluster onto an openstack cloud.

You will need to make sure you have the openstack pythoin client installed and have access to an openstack cloud.

to deploy the cluster you should run the following command.

openstack stack create -t src/kargo-kube.yaml -e src/library.yaml -e heat-lib/env/rhel_library.yaml -e ../environment.yaml test-stack --wait

your environment file should look like this:

parameters:

external_network: ext_float dns_nameservers:

  • 8.8.8.8
  • 8.8.4.4

key: ssh-key deployhost_flavor: m1.small deployhost_image: CentOS-7-x86_64-GenericCloud master_flavor: m1.small master_image: CentOS-7-x86_64-GenericCloud etcd_flavor: m1.small etcd_image: CentOS-7-x86_64-GenericCloud node_flavor: m1.small node_image: CentOS-7-x86_64-GenericCloud server_policy: affinity

you can now deploy your stack.

If you want to test the stack do the following. determine your master controller ip addresses

kubectl get pods --all-namespaces

kubectl create namespace sock-shop kubectl apply -n sock-shop -f "https://github.com/microservices-demo/microservices-demo/blob/master/deploy/kubernetes/complete-demo.yaml?raw=true"

kubectl create namespace sock-shop git clone https://github.com/microservices-demo/microservices-demo cd microservices-demo kubectl apply -n sock-shop -f deploy/kubernetes/manifests

To view the shop in your browser you can run the following command to find out the external port for the service

kubectl describe svc front-end -n sock-shop

The output should look like this

Name: front-end Namespace: sock-shop Labels: name=front-end Selector: name=front-end Type: NodePort IP: XX.XX.XX.XX Port: <unset> 80/TCP NodePort: <unset> 30001/TCP Endpoints: <none> Session Affinity: None

Now connect to any of the nodes ipaddresses with the port to see the shop e.g. http://xx.xx.xx.xx:300001

To scale up the nodes in the cluster just edit the kargo-kube.yaml file and increase the node count in the file here.

node_cluster:

description: Deploys the node servers type: HeatLib::Cluster::Basic properties:

count: 5 name: node key: { get_param: key }

once done then run

openstack stack update -t src/kargo-kube.yaml -e src/library.yaml -e heat-lib/env/rhel_library.yaml -e ../environment.yaml test-stack --wait