Hi All,
I have deployed Cassandra operator and trying to add custom labels in CassandraDatacenter yaml, where statefulset/Cassandra cluster should use those labels
can you help me in adding custom labels in example-cassdc-full.yaml .
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Erick Ramirez for the following reason: The question is answered, right answer was accepted
Is it possible to add custom labels in CassandraDatacenter?
Hi @phaniharsha It is possible to do what you want using the .spec.podTemplateSpec property. Here is an example:
apiVersion: cassandra.datastax.com/v1beta1
kind: CassandraDatacenter
metadata:
name: dc1
spec:
clusterName: custom-labels-example
serverType: cassandra
serverVersion: "3.11.10"
dockerImageRunsAsCassandra: true
serverImage: datastax/cassandra-mgmtapi-3_11_10:v0.1.23
managementApiAuth:
insecure: {}
size: 1
storageConfig:
cassandraDataVolumeClaimSpec:
storageClassName: persistent-storage
accessModes:
- ReadWriteOnce
resources:
requests:
storage: 5Gi
podTemplateSpec:
metadata:
labels:
foo: bar
This will result in the label foo=bar being added to the pods in the StatefulSet.
The podTemplateSpec property is really powerful and flexible. It is powerful in that it allows you to override or custom define quite a bit.
It is flexible because it has merge behavior. In other words, you can add something for the cassandra container and cass-operator will merge that into the StatefulSet as opposed to just overwriting it.
I hope that helps :)
Cheers
John
Thanks for the response
I have tried adding labels under podTemplateSpec in CassandraDatacenter but no luck, labels are not being added to the pods in statefulset. am i missing something? can you please help me.
storageConfig:
cassandraDataVolumeClaimSpec:
storageClassName: {
{ .Values.cr.storageConfig.storageClassName }}
accessModes:
- {
{ .Values.cr.storageConfig.accessMode }}
resources:
requests:
storage: {
{ .Values.cr.storageConfig.storage }}
podTemplateSpec:
metadata:
labels:
foo: bar
By describing pod result as follow:
By describing sts result as follow:
Thanks,
Phani
Hi @phaniharsha
Is the code that you shared from a Helm chart template (or something similar)? Maybe it is not generating the CassandraDatacenter spec as expected. Let's see what it looks like. Can you please share the output of `kubectl get cassandradatacenter dc1 -o yaml`.
Yes, you can add custom labels.
For example:
metadata:
name: dc1
labels:
label_1: value_1
label_2: value_2
Is this what you're after? If not, please let us know what outcome you're after or what problem you're trying to solve so we can provide a better answer. Cheers!
Hi Eric, Thanks for the response.
I am trying to add some extra labels/custom labels in statefulset through Cassandradatacenter
I tried adding labels under metadata object in cassandradatacenter but same custom labels are not being taken by statefulset instead i am only seeing pre-defined labels or pods, my goal is, statefulset or pods should also take custom labels along with predefined labels.
Cassandradatacenter:
dc1:
Statefulset:
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