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Work on bootstraping cluster

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Tom English 2023-12-21 20:06:48 -05:00
parent 6e234d3dca
commit 68901603a4
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docs/08-bootstrapping-kubernetes-controllers.md
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@ -4,12 +4,24 @@ In this lab you will bootstrap the Kubernetes control plane across three compute
## Prerequisites ## Prerequisites
The commands in this lab must be run on each controller instance: `controller-0`, `controller-1`, and `controller-2`. Login to each controller instance using the `gcloud` command. Example: The commands in this lab must be run on each controller instance: `controller-0`, `controller-1`, and `controller-2`. Login to each controller instance:
```gcloud```
``` ```
gcloud compute ssh controller-0 gcloud compute ssh controller-0
``` ```
```az```
```
az ssh vm --name controller-0 --local-user azureuser
```
OR
```
ssh -i $HOME/.ssh/k8sthehardway azureuser@$(az vm show -d --name controller-0 --query "publicIps" -o tsv)
```
### Running commands in parallel with tmux ### Running commands in parallel with tmux
[tmux](https://github.com/tmux/tmux/wiki) can be used to run commands on multiple compute instances at the same time. See the [Running commands in parallel with tmux](01-prerequisites.md#running-commands-in-parallel-with-tmux) section in the Prerequisites lab. [tmux](https://github.com/tmux/tmux/wiki) can be used to run commands on multiple compute instances at the same time. See the [Running commands in parallel with tmux](01-prerequisites.md#running-commands-in-parallel-with-tmux) section in the Prerequisites lab.
@ -37,42 +49,42 @@ wget -q --show-progress --https-only --timestamping \
Install the Kubernetes binaries: Install the Kubernetes binaries:
``` ```
{
chmod +x kube-apiserver kube-controller-manager kube-scheduler kubectl chmod +x kube-apiserver kube-controller-manager kube-scheduler kubectl
sudo mv kube-apiserver kube-controller-manager kube-scheduler kubectl /usr/local/bin/ sudo mv kube-apiserver kube-controller-manager kube-scheduler kubectl /usr/local/bin/
}
``` ```
### Configure the Kubernetes API Server ### Configure the Kubernetes API Server
``` ```
{
sudo mkdir -p /var/lib/kubernetes/ sudo mkdir -p /var/lib/kubernetes/
sudo mv ca.pem ca-key.pem kubernetes-key.pem kubernetes.pem \ sudo mv ca.pem ca-key.pem kubernetes-key.pem kubernetes.pem \
service-account-key.pem service-account.pem \ service-account-key.pem service-account.pem \
encryption-config.yaml /var/lib/kubernetes/ encryption-config.yaml /var/lib/kubernetes/
}
``` ```
The instance internal IP address will be used to advertise the API Server to members of the cluster. Retrieve the internal IP address for the current compute instance: The instance internal IP address will be used to advertise the API Server to members of the cluster. Retrieve the internal IP address for the current compute instance:
```gcloud```
``` ```
INTERNAL_IP=$(curl -s -H "Metadata-Flavor: Google" \ INTERNAL_IP=$(curl -s -H "Metadata-Flavor: Google" \
http://metadata.google.internal/computeMetadata/v1/instance/network-interfaces/0/ip) http://metadata.google.internal/computeMetadata/v1/instance/network-interfaces/0/ip)
```
```
REGION=$(curl -s -H "Metadata-Flavor: Google" \ REGION=$(curl -s -H "Metadata-Flavor: Google" \
http://metadata.google.internal/computeMetadata/v1/project/attributes/google-compute-default-region) http://metadata.google.internal/computeMetadata/v1/project/attributes/google-compute-default-region)
```
```
KUBERNETES_PUBLIC_ADDRESS=$(gcloud compute addresses describe kubernetes-the-hard-way \ KUBERNETES_PUBLIC_ADDRESS=$(gcloud compute addresses describe kubernetes-the-hard-way \
--region $REGION \ --region $REGION \
--format 'value(address)') --format 'value(address)')
``` ```
```az```
```
sudo apt-get update
sudo apt-get install -y jq
INTERNAL_IP=$(curl -s -H Metadata:true --noproxy "*" "http://169.254.169.254/metadata/instance?api-version=2021-02-01" | jq -r '.network.interface[0].ipv4.ipAddress[0].privateIpAddress')
REGION=$(curl -s -H Metadata:true --noproxy "*" "http://169.254.169.254/metadata/instance?api-version=2021-02-01" | jq -r '.compute.location')
KUBERNETES_PUBLIC_ADDRESS=$(az network public-ip show --name kubernetes-the-hard-way --query ipAddress -o tsv)
```
Create the `kube-apiserver.service` systemd unit file: Create the `kube-apiserver.service` systemd unit file:
``` ```
@ -202,11 +214,9 @@ EOF
### Start the Controller Services ### Start the Controller Services
``` ```
{
sudo systemctl daemon-reload sudo systemctl daemon-reload
sudo systemctl enable kube-apiserver kube-controller-manager kube-scheduler sudo systemctl enable kube-apiserver kube-controller-manager kube-scheduler
sudo systemctl start kube-apiserver kube-controller-manager kube-scheduler sudo systemctl start kube-apiserver kube-controller-manager kube-scheduler
}
``` ```
> Allow up to 10 seconds for the Kubernetes API Server to fully initialize. > Allow up to 10 seconds for the Kubernetes API Server to fully initialize.