Examples

Deploying a Static File Server

Lets start with a basic go static file server, copy-and-paste below to server.go:

package main

import (
    "log"
    "net/http"
)

func main() {
    fs := http.FileServer(http.Dir("static"))
    http.Handle("/", fs)

    log.Println("Listening...on 8080")
    http.ListenAndServe(":8080", nil)
}

Now build server.go:

$ GOOS=linux go build server.go

Prepare the HTML content:

$ mkdir static
$ cd static

Create hello.html:

<!doctype html>
<html>
<head>
<meta charset="utf-8">
    <title>A static page</title>
</head>
<body>
    <h1>Hello from a static page</h1>
</body>
</html>

Create a config file named config.json:

{
    "Dirs" : ["static"],
    "Files":["/lib/x86_64-linux-gnu/libnss_dns.so.2", "/etc/ssl/certs/ca-certificates.crt"]
}

If you are on linux you can use the above example to enable dns/tls, otherwise you can use this for local Mac examples.

Note: This is more than likely to change in the very near future.

{
    "Dirs" : ["static"]
}

The directory structure should look like below after these steps:

.
├── config.json
├── server
└── static
    └── hello.html

Package and deploy:

$ ops run -p 8080 -c config.json server

Notice that we are using KVM user-mode networking and have to forward host port 8080 to VM.

Curl it:

curl http://localhost:8080/hello.html

To learn more about various config options visit OPS GitHub repository. More examples can be found from the ops-examples repository.

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