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@euank
Last active Aug 30, 2017
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What would you like to do?
ECS / EC2 Metadata entrypoint example
FROM golang:1.4
COPY entrypoint.sh /entrypoint.sh
COPY main.go main.go
RUN go build -o main main.go
RUN chmod +x /entrypoint.sh
EXPOSE 8080
ENTRYPOINT ["/entrypoint.sh"]
CMD ["./main"]
#!/bin/sh
export HOST=$(curl --retry 5 --connect-timeout 3 -s 169.254.169.254/latest/meta-data/local-hostname)
export LOCAL_IP=$(curl --retry 5 --connect-timeout 3 -s 169.254.169.254/latest/meta-data/local-ipv4)
exec "$@"
package main
import (
"encoding/json"
"log"
"net/http"
"os"
)
func main() {
log.Fatal(http.ListenAndServe(":8080", http.HandlerFunc(func(resp http.ResponseWriter, req *http.Request) {
resp.Header().Set("Content-Type", "application/json")
body, err := json.Marshal(map[string]string{"hostname": os.Getenv("HOST"), "localIp": os.Getenv("LOCAL_IP")})
if err != nil {
panic(err)
}
resp.Write(body)
})))
}
{
"family": "test-hostenv-entrypoint",
"containerDefinitions": [{
"name": "test",
"image": "euank/play:2015-08-10",
"memory": 50,
"portMappings": [{
"containerPort": 8080,
"hostPort": 8080
}]
}]
}
@ccit-spence
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Thank for this, I will try later today. The issue I have had in my attempts is the session the export of the variables is placed. I am using a Spring/Java jar file. Needing to get the env variables into the properties files.

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