whoamI

This is a fork from https://github.com/containous/whoami.

Tiny Go webserver that prints os information and HTTP request to output

$ docker run -d -P --name iamfoo bee42/whoami:1.2.0
$ docker inspect --format '{{ .NetworkSettings.Ports }}'  iamfoo
map[80/tcp:[{0.0.0.0 32769}]]
$ curl "http://0.0.0.0:32769"
Hostname :  6e0030e67d6a
IP :  127.0.0.1
IP :  ::1
IP :  172.17.0.27
IP :  fe80::42:acff:fe11:1b
GET / HTTP/1.1
Host: 0.0.0.0:32769
User-Agent: curl/7.35.0
Accept: */*

Endpoints

1.2.0

• GET / prints runtime information, ip addresses
• GET /health returns current healthstatus of the app
• POST /health sets current healthstatus of the app
• GET /echo prints an echo back
• GET /api prints runtime information, ip addresses in json
• GET /bench wait a long time before repsonse

2.0.0

• GET /version prints podinfo version and git commit hash

Versions

Setting version in 2.0.0

$ docker run -d -p 8086:80 -e WHOAMI_VERSION=2.0.0-release bee42/whoami:2.0.0
$ curl 127.0.0.1:8086/version

Metrics with prometheus

• GET /metrics get prometheus metrics form go process

2.1.0

$ docker run -d -p 8087:80 -e WHOAMI_VERSION=2.1.0-release bee42/whoami:2.1.0
$ curl 127.0.0.1:8087/
$ curl 127.0.0.1:8087/metrics

Currently the request of ´/api´ and ´/´ are measured.

Kubernetes deployment with the helm charts

$ cd whoami
$ helm install -n whoami --namespace whoami .

With --set nginx-ingress.enabled=trueyou can deploy a local NodePort nginx

Look inside values.yaml for more options.

Links of metrics

• https://prometheus.io/docs/guides/go-application/
• https://povilasv.me/prometheus-go-metrics/
• https://github.com/alexellis/hash-browns
• https://blog.alexellis.io/prometheus-monitoring/
• https://alex.dzyoba.com/blog/go-prometheus-service/
• https://ordina-jworks.github.io/monitoring/2016/09/23/Monitoring-with-Prometheus.html

Regards Peter Rossbach ([email protected])