Jbn1233 – Medium

Jbn1233

Assign certain worker nodes to specific namespaces in Kubernetes with PodNodeSelector admission…

Add or append “PodNodeSelector” into — enable-admission-plugins parameter

Oct 26

Oct 26

Kubernetes kube-dns fix nslookup error — Got recursion not available from…

t just an unharmed message ,but you can fix it too.

Oct 20

Oct 20

CiliumNetworkPolicy — allow external and within namespace

For this example, deny access to another pod in other namespace ,but allow only kube-dns (UDP port 53)

Oct 18

Oct 18

Sample cloud-init v24.x

To add a user with sudo privileges without requiring a password, user password, SSH authorized keys and time zone

Oct 4

Oct 4

Run Containerd with Kata Containers

Just simple add these lines into file /etc/containerd/config.toml:

Sep 30

Run Containerd with Kata Containers

Sep 30

Kubernetes v1.31 used less resource than previous versions.

On official docs says

Aug 20

Kubernetes v1.31 used less resource than previous versions.

Aug 20

Nginx Ingress Controller with Cloudflare Full (strict) SSL/TLS encryption + mTLS mode

Upload “Cloudflare certificate” to Ingress Controller Before enable “Authenticated Origin Pulls”

Aug 17

Aug 17

kubernetes-csi/csi-driver-nfs with subDir

By default nfs-csi store file in format nfs://nfs-server:/export-path/$pvname. With subDir will make it better.

Aug 10

Aug 10

Kubernetes pod hostPort vs hostNetwork

TDIL;

Aug 9

Aug 9

Building OpenSSH 9.8x for Ubuntu from source

Try this bash script.

Jul 24

Jul 24

Jbn1233

Jbn1233

Very short and simple notes for CKA/SRE and may not works on your environment | jbn1233@gmail.com | Bangkok, Thailand |

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