Docker for Serverless Applications

Deploying and invoking

To deploy the newly built function, we use the faas-cli deploy command. It reads the function specification with -f, similar to other sub-commands. In this example, it uses the value of the provider's gateway to deploy the function. If there's already a previous function running as a service on Docker Swarm, the old one will be deleted before deploying the new one. After deployment, the URL for manually invoking the function, such as via curl, will be shown:

$ faas-cli deploy -f hello.yml Deploying: hello.Removing old function.Deployed.URL: http://localhost:8080/function/hello200 OK

To obtain all running functions on the cluster, we can run the faas-cli list command. The command also shows the number of invocations ...