A configuration helper to provide external IP discovery.
Replaces a placeholder in a configuration file with the external IP reported by kubernetes.
Can be released to your private GCP registry with:
REGISTRY=gcr.io/yourproject make release
Deployment spec
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
name: app
spec:
initContainers:
- name: app-config
image: foo:bar
args:
- -configmap=config
- -filename=/app/config/appsettings.xml
volumeMounts:
- name: conf
mountPath: /app/config
containers:
- name: app
image: app:latest
volumeMounts:
- name: conf
mountPath: /app/config
volumes:
- name: conf
emptyDir: {}Config map
apiVersion: v1
kind: ConfigMap
metadata:
name: config
data:
appsettings.xml: |
<?xml version="1.0" encoding="utf-8"?>
<Settings>
<MatchPoolName>MatchPool</MatchPoolName>
<ExternalAddress>K8S_EXTERNALADDRESS</ExternalAddress>
</Settings>This will replace appsettings.xml values before it is read by the container.