kops-k8s-demo

• What is kops?

We like to think of it as kubectl for clusters.

kops helps you create, destroy, upgrade and maintain production-grade, highly available, Kubernetes clusters from the command line. AWS (Amazon Web Services) is currently officially supported, with GCE in beta support , and VMware vSphere in alpha, and other platforms planned.

More information: https://github.com/kubernetes/kops

• export variables

export BUCKET_NAME=name-bucket-s3
export DOMAIN_NAME=name-domain-dns

• you need to import aws access keys

aws configure

ls -la .aws/
total 16
drwxr-xr-x  2 user user 4096 Set 18 13:47 .
drwxr-xr-x 72 user user 4096 Nov 27 17:05 ..
-r--------  1 user user   62 Nov  9 09:08 config
-r--------  1 user user  131 Nov  9 09:08 credentials

• install kops

curl -LO https://github.com/kubernetes/kops/releases/download/$(curl -s https://api.github.com/repos/kubernetes/kops/releases/latest | grep tag_name | cut -d '"' -f 4)/kops-linux-amd64
chmod +x kops-linux-amd64
sudo mv kops-linux-amd64 /usr/local/bin/kops

• install kubectl

curl -LO https://storage.googleapis.com/kubernetes-release/release/$(curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt)/bin/linux/amd64/kubectl
chmod +x kubectl
sudo mv kubectl /usr/local/bin/

• create amazon s3

aws s3api create-bucket --bucket $BUCKET_NAME

• versioning amazon s3

aws s3api put-bucket-versioning --bucket $BUCKET_NAME --versioning-configuration Status=Enabled

• export s3 bucket to kops

export KOPS_STATE_STORE=s3://$BUCKET_NAME

• configure dns route53 amazon

ID=$(uuidgen) && \
aws route53 create-hosted-zone \
--name $DOMAIN_NAME \
--caller-reference $ID

• create cluster kubernetes with kops

kops create cluster \
    --name $DOMAIN_NAME \
    --node-count 1 \
    --zones us-east-1a \
    --master-zones us-east-1a \
    --dns-zone $DOMAIN_NAME \
    --state s3://$BUCKET_NAME \
    --topology private \
    --networking calico \
    --bastion \
    --yes

• validating cluster creation

kops validate cluster --state s3://$BUCKET_NAME --name $DOMAIN_NAME
kubectl get nodes --show-labels
ssh -A -i ~/.ssh/id_rsa admin@bastion.$DOMAIN_NAME
kubectl -n kube-system get pods

run app1 kubernetes

• create pod server apache + php

kubectl create -f app1/prod/deployment.json

• create loadbalance to access application

kubectl create -f app1/prod/loadbalancer.json

• discovery dns loadbalance to access application

kubectl describe services | grep -w "LoadBalancer Ingress"

• validade access to application

curl -s $(kubectl describe services | grep -w "LoadBalancer Ingress" | awk '{print $3}')

<H1>My container id: apache-prod-deployment-518621942-f7hzr</H1>
<H2>My ipaddress: 100.97.153.68</H2>

Finish

• destroy cluster kubernetes

kops delete cluster --state=s3://$BUCKET_NAME --yes