ihcsim

Update libvirt's built-in dnsmasqd with static DHCP MAC/IP address binding

List the available network:

virsh net-list
 Name      State    Autostart   Persistent
--------------------------------------------
 default   active   yes         yes

ihcsim

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: nginx-data
spec:
  accessModes:
  - ReadWriteOnce
  resources:
    requests:
      storage: 5Gi

ihcsim

# pull the key from the remote key server
$ gpg [--keyserver keyserver.ubuntu.com] --recv-keys <remote_key_id>
 
# sign the key
$ gpg --sign-key <key_id>
 
# if there are multiple local keys, use a different local secret key for signing
$ gpg --local-user <local_key_id> --sign-key <remote_key_id>
 

ihcsim

apiVersion: image.openshift.io/v1
kind: ImageStream
metadata:
  annotations:
    kubectl.kubernetes.io/last-applied-configuration: |
      {"apiVersion":"image.openshift.io/v1","kind":"ImageStream","metadata":{"annotations":{},"labels":{"app":"battle-demo","app.kubernetes.io/component":"battle-demo","app.kubernetes.io/instance":"battle-demo"},"name":"battle-demo","namespace":"isim-dev"},"spec":{"lookupPolicy":{"local":false},"tags":[{"annotations":{"openshift.io/imported-from":"quay.io/battlecloud/demo:latest"},"from":{"kind":"DockerImage","name":"quay.io/battlecloud/demo:latest"},"generation":2,"importPolicy":{"importMode":"Legacy"},"name":"latest","referencePolicy":{"type":"Source"}}]}}
    openshift.io/image.dockerRepositoryCheck: "2023-10-04T15:55:41Z"
  creationTimestamp: "2023-10-04T15:55:39Z"
  generation: 2
  labels:

ihcsim

apiVersion: oadp.openshift.io/v1alpha1
kind: DataProtectionApplication
metadata:  
  name: oadp-velero
  namespace: velero-ppdm  
spec:
  backupImages: false
  configuration:
    restic:
      enable: false

ihcsim

apiVersion: v1
kind: Pod
metadata
  name: curl
spec:
  containers:
  - name: curl
    image: curlimages/curl:7.87.0
    command: ["sleep", "infinity"]

ihcsim

$ cargo run
   Compiling rust-ownership v0.1.0 (/home/isim/rust-ownership)
error[E0382]: borrow of moved value: `svc`
  --> src/main.rs:24:28
   |
12 |     let svc = Service {
   |         --- move occurs because `svc` has type `Service<'_>`, which does not implement the `Copy` trait
...
19 |     let mut nginx = svc;
   |                     --- value moved here

ihcsim

use std::collections::HashMap;

#[derive(Debug)]
struct Service {
    name: String,
    namespace: String,
    endpoints: Vec<String>,
    mappings: HashMap<String, String>,
}

ihcsim

$ go run main.go
updated: {name:nginx namespace:ingress endpoints:[192.168.0.1 192.168.0.2 192.168.0.40] mappings:map[pod-0:192.168.0.1 pod-1:192.168.0.2 pod-2:192.168.0.40]}
original: {name:nginx namespace:default endpoints:[192.168.0.1 192.168.0.2] mappings:map[pod-0:192.168.0.1 pod-1:192.168.0.2 pod-2:192.168.0.40]}

ihcsim

type Service struct {
	name      string
	namespace string
	endpoints []string
	mappings  map[string]string
}

func main() {
	svc := Service{
		name:      "nginx",