mirrors
/
kubernetes-the-hard-way
mirror of https://github.com/kelseyhightower/kubernetes-the-hard-way
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

Adapt, change IP definition

pull/582/head
Nemo 2020-06-20 15:29:27 +02:00
parent b6360c7944
commit d7c532c051
1 changed files with 24 additions and 34 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

58
docs/09-bootstrapping-kubernetes-workers.md
View File

@ -4,10 +4,10 @@ In this lab you will bootstrap three Kubernetes worker nodes. The following comp
## Prerequisites ## Prerequisites
The commands in this lab must be run on each worker instance: `worker-0`, `worker-1`, and `worker-2`. Login to each worker instance using the `gcloud` command. Example: The commands in this lab must be run on each worker instance: `worker-0`, `worker-1`, and `worker-2`. Login to each worker instance using the `ssh` command. Example:
```bash ```bash
gcloud compute ssh worker-0 ssh worker-0
``` ```
### Running commands in parallel with tmux ### Running commands in parallel with tmux
@ -19,10 +19,8 @@ gcloud compute ssh worker-0
Install the OS dependencies: Install the OS dependencies:
```bash ```bash
{ sudo apt-get update
sudo apt-get update sudo apt-get -y install socat conntrack ipset
sudo apt-get -y install socat conntrack ipset
}
``` ```
> The socat binary enables support for the `kubectl port-forward` command. > The socat binary enables support for the `kubectl port-forward` command.
@ -73,27 +71,26 @@ sudo mkdir -p \
Install the worker binaries: Install the worker binaries:
```bash ```bash
{ mkdir containerd
mkdir containerd tar -xvf crictl-v1.15.0-linux-amd64.tar.gz
tar -xvf crictl-v1.15.0-linux-amd64.tar.gz tar -xvf containerd-1.2.9.linux-amd64.tar.gz -C containerd
tar -xvf containerd-1.2.9.linux-amd64.tar.gz -C containerd sudo tar -xvf cni-plugins-linux-amd64-v0.8.2.tgz -C /opt/cni/bin/
sudo tar -xvf cni-plugins-linux-amd64-v0.8.2.tgz -C /opt/cni/bin/ sudo mv runc.amd64 runc
sudo mv runc.amd64 runc chmod +x crictl kubectl kube-proxy kubelet runc
chmod +x crictl kubectl kube-proxy kubelet runc sudo mv crictl kubectl kube-proxy kubelet runc /usr/local/bin/
sudo mv crictl kubectl kube-proxy kubelet runc /usr/local/bin/ sudo mv containerd/bin/* /bin/
sudo mv containerd/bin/* /bin/
}
``` ```
### Configure CNI Networking ### Configure CNI Networking
Retrieve the Pod CIDR range for the current compute instance: Define the Pod CIDR range for the current node (different for each worker). Replace THE_POD_CIDR by the CIDR network for this node (see network architecture):
```bash ```bash
POD_CIDR=$(curl -s -H "Metadata-Flavor: Google" \ POD_CIDR=THE_POD_CIDR
http://metadata.google.internal/computeMetadata/v1/instance/attributes/pod-cidr)
``` ```
> Example for worker-0: 10.200.0.0/24
Create the `bridge` network configuration file: Create the `bridge` network configuration file:
```bash ```bash
@ -177,11 +174,9 @@ EOF
### Configure the Kubelet ### Configure the Kubelet
```bash ```bash
{ sudo mv ${HOSTNAME}-key.pem ${HOSTNAME}.pem /var/lib/kubelet/
sudo mv ${HOSTNAME}-key.pem ${HOSTNAME}.pem /var/lib/kubelet/ sudo mv ${HOSTNAME}.kubeconfig /var/lib/kubelet/kubeconfig
sudo mv ${HOSTNAME}.kubeconfig /var/lib/kubelet/kubeconfig sudo mv ca.pem /var/lib/kubernetes/
sudo mv ca.pem /var/lib/kubernetes/
}
``` ```
Create the `kubelet-config.yaml` configuration file: Create the `kubelet-config.yaml` configuration file:
@ -281,27 +276,22 @@ EOF
### Start the Worker Services ### Start the Worker Services
```bash ```bash
{ sudo systemctl daemon-reload
sudo systemctl daemon-reload sudo systemctl enable containerd kubelet kube-proxy
sudo systemctl enable containerd kubelet kube-proxy sudo systemctl start containerd kubelet kube-proxy
sudo systemctl start containerd kubelet kube-proxy
}
``` ```
> Remember to run the above commands on each worker node: `worker-0`, `worker-1`, and `worker-2`. > Remember to run the above commands on each worker node: `worker-0`, `worker-1`, and `worker-2`.
## Verification ## Verification
> The compute instances created in this tutorial will not have permission to complete this section. Run the following commands from the same machine used to create the compute instances.
List the registered Kubernetes nodes: List the registered Kubernetes nodes:
```bash ```bash
gcloud compute ssh controller-0 \ ssh root@controller-0 kubectl get nodes --kubeconfig admin.kubeconfig
--command "kubectl get nodes --kubeconfig admin.kubeconfig"
``` ```
> output > Output:
```bash ```bash
NAME STATUS ROLES AGE VERSION NAME STATUS ROLES AGE VERSION