Running container as functions
Note: Support for containers in alpha, we plan to improve experience over coming releases. Your feedback is most appreciated to improve it.
With 1.14 release, Fission allows you to run your existing container as a function.
Running container image with Fission
fission function run-container provides required options to run an exiting container image as a Fission function.
$ fission function run-container --name cn-hello --image gcr.io/google-samples/node-hello:1.0 --port 8080
function 'cn-hello' created
Listing functions,
$ fission function list
NAME ENV EXECUTORTYPE MINSCALE MAXSCALE MINCPU MAXCPU MINMEMORY MAXMEMORY TARGETCPU SECRETS CONFIGMAPS
cn-hello container 1 1 0 0 0 0 80
Test container function,
$ fission fn test --name cn-hello
Hello Kubernetes!
We have added spec.podspec in Function Spec which captures container function details. Know more about options for running container with Functions,
kubectl explain functions.spec.podspec
You can also generate function spec with Fission CLI.
$ fission spec init
Creating fission spec directory 'specs'
$ fission function run-container --name cn-hello --image gcr.io/google-samples/node-hello:1.0 --port 8080 --spec
Saving Function 'default/cn-hello' to 'specs/function-cn-hello.yaml'
$ cat specs/function-cn-hello.yaml
apiVersion: fission.io/v1
kind: Function
metadata:
creationTimestamp: null
name: cn-hello
namespace: default
spec:
InvokeStrategy:
ExecutionStrategy:
ExecutorType: container
MaxScale: 1
MinScale: 1
SpecializationTimeout: 120
TargetCPUPercent: 80
StrategyType: execution
environment:
name: ""
namespace: ""
functionTimeout: 60
idletimeout: 120
package:
packageref:
name: ""
namespace: ""
podspec:
containers:
- image: gcr.io/google-samples/node-hello:1.0
name: cn-hello
ports:
- containerPort: 8080
name: http-env
resources: {}
resources: {}
Running Next.js app container with Fission
You can run a sample Next.js based app.
$ fission fn run-container --name=nextapp --image fission/next-sample-app:1.0.0 --port 3000
function 'nextapp' created
$ fission route create --name nextapp --function nextapp --prefix /nextapp --keepprefix
trigger 'nextapp' created
Visit app URL, http://<router_url>/nextapp/
You can refer it source for the application here.
Command options
You can also use alias, fission fn runc instead of fission function run-container OR
fission fn updatec instead of fission fn updatec.
Please check command help for more options while creating container based functions.