a quick poke at the latest cf-k8s-controllers to see what they have to offer (2022-02-18)
Run a local Cloud Foundry on k8s, make some orgs/spaces and push some apps, check out the cf experience and take a look behind the scenes with kubectl.
| what | version | decription |
|---|---|---|
| hardware | 2.6 GHz 6-Core Intel Core i7 | macbook pro |
| host os | macos 11.6.4 | host operating system |
| direnv | v2.30.3 | load environment variables based on directory |
| jq | jq-1.6 | json wrangling tool |
| docker desktop | 3.6.0 | container runtime with 60Gb disk allocated, 8GB ram, 2GB swap |
| docker cli | 20.10.8 | docker command line interface |
| docker engine | 20.10.8 | docker engine |
| kubectl | v1.23.4 | k8s cli |
| helm | v3.8.0 | k8s package manager |
| kind | v0.11.1 | k8s on docker |
| kui | 11.2.5 | hybrid cli/gui for k8s |
| cf-k8s-controllers | main | repo |
| cf cli v8 | 8.2.0+fd8fbca64.2022-02-09 | latest cloud foundry CLI with k8s support |
| pack | 0.24.0+git-79a40b7.build-3148 | packeto buildpacks CLI |
- https://kubernetes.io/docs/home/
- supported apis
- hierarchical namespace controller
- kpack
- cf-k8s-controllers
assumes you already have Docker installed and you have given it 8GB or more RAM
brew install kubernetes-cli
brew install helm
brew install kustomize
brew install kubebuilder
brew install kind
brew install kui
brew install jq
brew install direnv
brew install cf-cli@8
brew install buildpacks/tap/pack
kind create cluster --name cf
kubectl get-clusters
kubectl get namespaces
git clone https://github.com/cloudfoundry/cf-k8s-controllers
cd cf-k8s-controllers
direnv allow
chmod a+rx ./scripts/deploy-on-kind
./scripts/deploy-on-kind.sh cf --use-local-registry
and wait for it to spin up
docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
9fedba4308f1 kindest/node:v1.21.1 "/usr/local/bin/entr…" 3 hours ago Up 3 hours 0.0.0.0:80->80/tcp, 0.0.0.0:443->443/tcp, 0.0.0.0:30050->30050/tcp, 127.0.0.1:51053->6443/tcp kind-control-plane
kubectl version
kubectl config get-clusters
NAME
kind-kind
minikube
kubectl get namespaces
NAME STATUS AGE
cert-manager Active 152m
cf Active 152m
cf-k8s-api-system Active 147m
cf-k8s-controllers-system Active 148m
default Active 153m
eirini-controller Active 151m
hnc-system Active 152m
kpack Active 152m
kube-node-lease Active 153m
kube-public Active 153m
kube-system Active 153m
local-path-storage Active 153m
projectcontour Active 152m
kubectl get nodes
NAME STATUS ROLES AGE VERSION
kind-control-plane Ready control-plane,master 155m v1.21.1
kubectl get po -A
NAMESPACE NAME READY STATUS RESTARTS AGE
cert-manager cert-manager-848f547974-w95jw 1/1 Running 0 155m
cert-manager cert-manager-cainjector-54f4cc6b5-fv56q 1/1 Running 0 155m
cert-manager cert-manager-webhook-7c9588c76-qqxdl 1/1 Running 0 155m
cf-k8s-api-system cf-k8s-api-deployment-6c89574b4f-mhmhh 1/1 Running 0 150m
cf-k8s-controllers-system cf-k8s-controllers-controller-manager-5d87848774-cvdgc 2/2 Running 0 151m
default localregistry-docker-registry-7bfcd67f8f-52btq 1/1 Running 0 155m
eirini-controller eirini-controller-7c8c4856d4-87pzt 1/1 Running 0 154m
eirini-controller eirini-controller-7c8c4856d4-c5drn 1/1 Running 0 154m
hnc-system hnc-controller-manager-6c596857bd-sbknh 1/1 Running 1 155m
kpack kpack-controller-5865df8c5f-kr589 1/1 Running 0 155m
kpack kpack-webhook-65995b9f8f-m4dcf 1/1 Running 0 155m
kube-system coredns-558bd4d5db-9bqrc 1/1 Running 0 155m
kube-system coredns-558bd4d5db-nhvmm 1/1 Running 0 155m
kube-system etcd-kind-control-plane 1/1 Running 0 156m
kube-system kindnet-rvphf 1/1 Running 0 155m
kube-system kube-apiserver-kind-control-plane 1/1 Running 0 156m
kube-system kube-controller-manager-kind-control-plane 1/1 Running 0 156m
kube-system kube-proxy-g4lmj 1/1 Running 0 155m
kube-system kube-scheduler-kind-control-plane 1/1 Running 0 156m
local-path-storage local-path-provisioner-547f784dff-r9ddp 1/1 Running 0 155m
projectcontour contour-76bb4ff6cc-7lj8q 1/1 Running 0 155m
projectcontour contour-76bb4ff6cc-hf6bz 1/1 Running 0 155m
projectcontour envoy-86rn8 2/2 Running 0 155m
docker ps and grab the instance hash
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
9fedba4308f1 kindest/node:v1.21.1 "/usr/local/bin/entr…" 3 hours ago Up 3 hours 0.0.0.0:80->80/tcp, 0.0.0.0:443->443/tcp, 0.0.0.0:30050->30050/tcp, 127.0.0.1:51053->6443/tcp kind-control-plane```
docker exec -ti 9fedba4308f1 /bin/bash
top
apt-get update
apt-get -y install vim jq
kubectl get pods -A
back on the host system (in this case a mac) take a look at the cf api endpoint
curl localhost | jq .
{
"links": {
"app_ssh": null,
"bits_service": null,
"cloud_controller_v2": null,
"cloud_controller_v3": {
"href": "http://localhost/v3",
"meta": {
"version": "3.111.0+cf-k8s"
}
},
"credhub": null,
"log_cache": {
"href": "http://localhost",
"meta": {
"version": ""
}
},
"log_stream": null,
"logging": null,
"login": null,
"network_policy_v0": null,
"network_policy_v1": null,
"routing": null,
"self": {
"href": "http://localhost",
"meta": {
"version": ""
}
},
"uaa": null
},
"cf_on_k8s": true
}
curl http://localhost/v3 | jq .
cf api http://localhost
cf api http://localhost
Setting API endpoint to http://localhost...
Warning: Insecure http API endpoint detected: secure https API endpoints are recommended
OK
API endpoint: http://localhost
API version: 3.111.0+cf-k8s
Not logged in. Use 'cf login' or 'cf login --sso' to log in.
cf login
API endpoint: http://localhost
Warning: Insecure http API endpoint detected: secure https API endpoints are recommended
1. kubernetes-admin
Choose your Kubernetes authentication info (enter to skip): 1
Authenticating...
OK
API endpoint: http://localhost
API version: 3.111.0+cf-k8s
user: kubernetes-admin
No org or space targeted, use 'cf target -o ORG -s SPACE'
cf buildpacks
Getting buildpacks as kubernetes-admin...
position name stack enabled locked filename
1 paketo-buildpacks/java io.buildpacks.stacks.bionic true false paketo-buildpacks/java@6.9.0
2 paketo-buildpacks/go io.buildpacks.stacks.bionic true false paketo-buildpacks/go@0.15.0
3 paketo-buildpacks/nodejs io.buildpacks.stacks.bionic true false paketo-buildpacks/nodejs@0.13.0
4 paketo-buildpacks/ruby io.buildpacks.stacks.bionic true false paketo-buildpacks/ruby@0.11.0
5 paketo-buildpacks/procfile io.buildpacks.stacks.bionic true false paketo-buildpacks/procfile@5.0.3
on the host system
cf create-org demo-org
cf t -o demo-org
cf create-space pothole-service
cf t -s pothole-service
cf t
check out via kubectl
kubectl get namespaces
note that the newly created org has a uuid for a name
cf push -- maybe nginx
mkdir static_demo
cd static_demo
echo "<h1>hello world from cf on k8s on docker</h1>" > index.html
cf push - push using static buildpack equivalent
cf apps
cf app static
cf logs static --recent
- scale app up and down
cf scale -i 3 static
cf apps
instructions should include the creation of the cf cluster with
kind create cluster --name cf