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70 lines
2.7 KiB
Markdown
70 lines
2.7 KiB
Markdown
# How to run Fn on Kubernetes
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*Prerequisite 1: working Kubernetes cluster (v1.7+), and a locally configured kubectl.*
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## Quickstart
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### Steps
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1. Deploy Fn to the Kubernetes cluster:
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```bash
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$ cd docs/operating/kubernetes/
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$ kubectl create -f fn-service.yaml
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```
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2. Once the Pods have started, check the service for the load balancer IP:
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```bash
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$ kubectl -n fn get svc --watch
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NAME CLUSTER-IP EXTERNAL-IP PORT(S) AGE
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fn-mysql-master 10.96.57.185 <none> 3306/TCP 10m
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fn-redis-master 10.96.127.51 <none> 6379/TCP 10m
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fn-service 10.96.245.95 <pending> 8080:30768/TCP,80:31921/TCP 10m
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kubernetes 10.96.0.1 <none> 443/TCP 15d
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```
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Note that `fn-service` is initially pending on allocating an external IP. The `kubectl get svc --watch` command will update this once an IP has been assigned.
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3. Test the cluster:
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If you are using a Kubernetes setup that can expose a public load balancer, run:
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```bash
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$ export FN_API_URL=http://$(kubectl -n fn get service/fn-service -o jsonpath='{.status.loadBalancer.ingress[0].ip}:{.spec.ports[?(@.name=="fn-service")].port}')
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```
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If you are using a Kubernetes setup like minikube, run
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```bash
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$ export FN_API_URL=$(minikube -n fn service fn-service --url)
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```
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Now, test by creating a function via curl:
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```bash
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$ curl -H "Content-Type: application/json" -X POST -d '{ "app": { "name":"myapp" } }' $FN_API_URL/v1/apps
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{"message":"App successfully created","app":{"name":"myapp","config":null}}
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$ curl -H "Content-Type: application/json" -X POST -d '{ "route": { "type": "sync", "path":"/hello-sync", "image":"fnproject/hello" } }' $FN_API_URL/v1/apps/myapp/routes
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{"message":"Route successfully created","route":{"app_name":"myapp","path":"/hello-sync","image":"fnproject/hello","memory":128,"headers":{},"type":"sync","format":"default","timeout":30,"idle_timeout":30,"config":{}}}
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$ curl -H "Content-Type: application/json" -X POST -d '{ "name":"Johnny" }' $FN_API_URL/r/myapp/hello-sync
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Hello Johnny!
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```
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You can also use the [Fn CLI](https://github.com/fnproject/cli):
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```bash
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$ export FN_API_URL=http://192.168.99.100:30966
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$ fn apps list
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myapp
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$ fn routes list myapp
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path image endpoint
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/hello-sync fnproject/hello 192.168.99.100:30966/r/myapp/hello-sync
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$ echo '{"name":"Johnny"}' | fn call myapp /hello-sync
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Hello Johnny!
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```
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