182 lines
5.0 KiB
Markdown
182 lines
5.0 KiB
Markdown
# Cloud Infrastructure Provisioning - Google Cloud Platform
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This lab will walk you through provisioning the compute instances required for running a H/A Kubernetes cluster. A total of 6 virtual machines will be created.
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After completing this guide you should have the following compute instances:
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```
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gcloud compute instances list
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```
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````
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NAME ZONE MACHINE_TYPE PREEMPTIBLE INTERNAL_IP EXTERNAL_IP STATUS
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controller0 us-central1-f n1-standard-1 10.240.0.10 XXX.XXX.XXX.XXX RUNNING
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controller1 us-central1-f n1-standard-1 10.240.0.11 XXX.XXX.XXX.XXX RUNNING
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controller2 us-central1-f n1-standard-1 10.240.0.12 XXX.XXX.XXX.XXX RUNNING
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worker0 us-central1-f n1-standard-1 10.240.0.20 XXX.XXX.XXX.XXX RUNNING
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worker1 us-central1-f n1-standard-1 10.240.0.21 XXX.XXX.XXX.XXX RUNNING
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worker2 us-central1-f n1-standard-1 10.240.0.22 XXX.XXX.XXX.XXX RUNNING
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````
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> All machines will be provisioned with fixed private IP addresses to simplify the bootstrap process.
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To make our Kubernetes control plane remotely accessible, a public IP address will be provisioned and assigned to a Load Balancer that will sit in front of the 3 Kubernetes controllers.
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## Prerequisites
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Set the compute region and zone to us-central1:
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```
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gcloud config set compute/region us-central1
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```
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```
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gcloud config set compute/zone us-central1-f
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```
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## Setup Networking
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Create a custom network:
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```
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gcloud compute networks create kubernetes-the-hard-way --mode custom
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```
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Create a subnet for the Kubernetes cluster:
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```
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gcloud compute networks subnets create kubernetes \
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--network kubernetes-the-hard-way \
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--range 10.240.0.0/24 \
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--region us-central1
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```
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### Create Firewall Rules
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```
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gcloud compute firewall-rules create allow-internal \
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--allow tcp,udp,icmp \
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--network kubernetes-the-hard-way \
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--source-ranges 10.240.0.0/24,10.200.0.0/16
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```
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```
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gcloud compute firewall-rules create allow-external \
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--allow tcp:22,tcp:3389,tcp:6443,icmp \
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--network kubernetes-the-hard-way \
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--source-ranges 0.0.0.0/0
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```
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```
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gcloud compute firewall-rules create allow-healthz \
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--allow tcp:8080 \
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--network kubernetes-the-hard-way \
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--source-ranges 130.211.0.0/22,35.191.0.0/16
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```
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```
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gcloud compute firewall-rules list --filter "network=kubernetes-the-hard-way"
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```
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```
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NAME NETWORK SRC_RANGES RULES SRC_TAGS TARGET_TAGS
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allow-external kubernetes-the-hard-way 0.0.0.0/0 tcp:22,tcp:3389,tcp:6443,icmp
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allow-healthz kubernetes-the-hard-way 130.211.0.0/22,35.191.0.0/16 tcp:8080
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allow-internal kubernetes-the-hard-way 10.240.0.0/24,10.200.0.0/16 tcp,udp,icmp
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```
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### Create the Kubernetes Public Address
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Create a public IP address that will be used by remote clients to connect to the Kubernetes control plane:
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```
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gcloud compute addresses create kubernetes-the-hard-way --region=us-central1
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```
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```
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gcloud compute addresses list kubernetes-the-hard-way
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```
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```
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NAME REGION ADDRESS STATUS
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kubernetes-the-hard-way us-central1 XXX.XXX.XXX.XXX RESERVED
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```
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## Provision Virtual Machines
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All the VMs in this lab will be provisioned using Ubuntu 16.04 mainly because it runs a newish Linux kernel with good support for Docker.
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### Virtual Machines
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#### Kubernetes Controllers
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```
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gcloud compute instances create controller0 \
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--boot-disk-size 200GB \
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--can-ip-forward \
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--image ubuntu-1604-xenial-v20170307 \
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--image-project ubuntu-os-cloud \
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--machine-type n1-standard-1 \
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--private-network-ip 10.240.0.10 \
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--subnet kubernetes
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```
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```
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gcloud compute instances create controller1 \
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--boot-disk-size 200GB \
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--can-ip-forward \
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--image ubuntu-1604-xenial-v20170307 \
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--image-project ubuntu-os-cloud \
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--machine-type n1-standard-1 \
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--private-network-ip 10.240.0.11 \
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--subnet kubernetes
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```
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```
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gcloud compute instances create controller2 \
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--boot-disk-size 200GB \
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--can-ip-forward \
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--image ubuntu-1604-xenial-v20170307 \
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--image-project ubuntu-os-cloud \
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--machine-type n1-standard-1 \
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--private-network-ip 10.240.0.12 \
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--subnet kubernetes
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```
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#### Kubernetes Workers
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```
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gcloud compute instances create worker0 \
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--boot-disk-size 200GB \
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--can-ip-forward \
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--image ubuntu-1604-xenial-v20170307 \
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--image-project ubuntu-os-cloud \
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--machine-type n1-standard-1 \
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--private-network-ip 10.240.0.20 \
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--subnet kubernetes
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```
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```
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gcloud compute instances create worker1 \
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--boot-disk-size 200GB \
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--can-ip-forward \
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--image ubuntu-1604-xenial-v20170307 \
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--image-project ubuntu-os-cloud \
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--machine-type n1-standard-1 \
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--private-network-ip 10.240.0.21 \
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--subnet kubernetes
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```
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```
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gcloud compute instances create worker2 \
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--boot-disk-size 200GB \
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--can-ip-forward \
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--image ubuntu-1604-xenial-v20170307 \
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--image-project ubuntu-os-cloud \
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--machine-type n1-standard-1 \
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--private-network-ip 10.240.0.22 \
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--subnet kubernetes
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```
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