Self-hosted Blog Guide for Engineers: Part II - Setting up Kubernetes

In this part we will continue and finish setting up a blog using Kubernetes. As it's the first tutorial on Humble Thoughts, it's available to all-tier members (including Free), but serves an example of exclusive content available in the Exclusive subscription.

Kubernetes Configuration

In the previous step, we set up k3s on our remote server using Ansible. We should use the kube config file to control the remote Kubernetes (single-node) cluster. For this, try running the following command from the root directory of the repository:

source .env && kubectl config use-context blog

Sourcing the .env file is required to reload the KUBECONFIG variable to ensure the new file is found and loaded to kubectl. If the result is successful and the context is switched, you should be able to check up on our K3s cluster on the server. Try running kubectl get all -A:

NAMESPACE     NAME                                          READY   STATUS    RESTARTS   AGE
kube-system   pod/local-path-provisioner-5d56847996-jchms   1/1     Running   0          26m
kube-system   pod/coredns-7c444649cb-sxq6d                  1/1     Running   0          26m
kube-system   pod/metrics-server-7b67f64457-xlnt6           1/1     Running   0          26m

NAMESPACE     NAME                     TYPE        CLUSTER-IP    EXTERNAL-IP   PORT(S)                  AGE
default       service/kubernetes       ClusterIP     <none>        443/TCP                  26m
kube-system   service/kube-dns         ClusterIP    <none>        53/UDP,53/TCP,9153/TCP   26m
kube-system   service/metrics-server   ClusterIP   <none>        443/TCP                  26m

NAMESPACE     NAME                                     READY   UP-TO-DATE   AVAILABLE   AGE
kube-system   deployment.apps/local-path-provisioner   1/1     1            1           26m
kube-system   deployment.apps/coredns                  1/1     1            1           26m
kube-system   deployment.apps/metrics-server           1/1     1            1           26m

NAMESPACE     NAME                                                DESIRED   CURRENT   READY   AGE
kube-system   replicaset.apps/local-path-provisioner-5d56847996   1         1         1       26m
kube-system   replicaset.apps/coredns-7c444649cb                  1         1         1       26m
kube-system   replicaset.apps/metrics-server-7b67f64457           1         1         1       26m

Great! Now the server is ready to create the application and supporting services.

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