Comments (1)
Yeah, it is not tightly coupled with docker. there is an interface that has the needed functionality for k8s implementation (https://github.com/Clivern/Peanut/blob/main/core/runtime/base.go#L8-L11). tbh i am not sure when i will support k8s since i care about the command line first and there will a lot to do to support k8s.
Anyways here is how i see it:
- Peanut can run outside the k8s cluster & uses the kube config to create/modify deployments, services and configmaps.
- and it can be deployed inside the cluster and have service account to be able to create/modify deployments, services and configmaps from inside the cluster.
like here https://github.com/Clivern/Beetle/blob/main/core/kubernetes/cluster.go#L79-L106
for example here is how peanut will deploy etcd of course with API calls
# Deploy nginx ingress or you have it already
$ kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/controller-v0.41.2/deploy/static/provider/cloud/deploy.yaml
$ kubectl get pods -n ingress-nginx \
-l app.kubernetes.io/name=ingress-nginx --watch
$ kubectl get svc --namespace=ingress-nginx
#-------------------------
# Deploy Etcd
echo "---
apiVersion: apps/v1
kind: Deployment
metadata:
name: etcd-deployment
spec:
replicas: 1
selector:
matchLabels:
app: etcd
template:
metadata:
labels:
app: etcd
name: etcd
spec:
containers:
-
image: 'bitnami/etcd:3.5.0'
name: etcd-app
ports:
- containerPort: 2379
env:
-
name: ALLOW_NONE_AUTHENTICATION
value: 'yes'
---
apiVersion: v1
kind: Service
metadata:
name: etcd-svc
labels:
app: etcd
spec:
ports:
-
port: 2379
targetPort: 2379
selector:
app: etcd
type: LoadBalancer" > etcd_test.yml
$ kubectl apply -f etcd_test.yml
deployment.apps/etcd-deployment created
service/etcd-svc created
# Peanut will return the load balancer IP and a port to use.
$ kubectl get svc
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
etcd-svc LoadBalancer X.X.X.X Y.Y.Y.Y 2379:32002/TCP 25m
$ etcdctl --endpoints Y.Y.Y.Y:2379 member list
Some services need a config file. we can mount the config files in pod using a configmap.
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