Adding arrays as Kubernetes environment variables
You can inject your entire application.conf with a mechanism of ConfigMaps:
apiVersion: v1
kind: ConfigMap
metatada:
name: app-config
data:
application.conf: |
play.cache.redis {
# enable cluster mode
source: cluster
# nodes are defined as a sequence of objects:
cluster: [
{
# required string, defining a host the node is running on
host: localhost
# required integer, defining a port the node is running on
port: 6379
# optional string, defines a password to use
password: null
}
]
}
and then mount it directly to your container:
apiVersion: v1
kind: Pod
metadata:
name: ....
spec:
containers:
- name: ...
image: ...
volumeMounts:
- name: config-volume
mountPath: /etc/config
volumes:
- name: config-volume
configMap:
name: app-config
The app can access it then at /etc/config/application.conf.
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Jonathan Perry
Currently working as a Software Engineer working mainly in Javascript / Mobile aspects (JS at work, mobile for fun, occasionally)
Updated on September 14, 2022Comments
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Jonathan Perry about 1 year
I'm working on a Java Play project, and in my
application.conf
file I have a Redis cluster set-up that receives an array of Redis server nodes.Now, I want to inject that value in Kubernetes deployment as an environment variable and can't find the right syntax to do so.
My current
application.conf
looks something like this:play.cache.redis { # enable cluster mode source: cluster # nodes are defined as a sequence of objects: cluster: [ { # required string, defining a host the node is running on host: localhost # required integer, defining a port the node is running on port: 6379 # optional string, defines a password to use password: null } ] }
Can someone please tell me how to pass the
play.cache.redis.cluster
variable to a Kubernetes deployment so it stays like this?