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#kubernetes
Title
# kubernetes
p

proud-spoon-58287

08/05/2020, 10:00 AM
Hi all, got a very novice question: got the following deployment
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apiVersion: apps/v1
apiVersion: apps/v1
kind: Deployment
metadata:
  annotations:
    kompose.cmd: kompose convert
    kompose.version: 1.21.0 ()
  labels:
    io.kompose.service: ksqldb-server
  name: ksqldb-server
spec:
  replicas: 1
  selector:
    matchLabels:
      io.kompose.service: ksqldb-server
  strategy: {}
  template:
    metadata:
      annotations:
        kompose.cmd: kompose convert
        kompose.version: 1.21.0 ()
      labels:
        io.kompose.service: ksqldb-server
    spec:
      containers:
      - env:
        - name: KSQL_BOOTSTRAP_SERVERS
          value: pkc-4r297.europe-west1.gcp.confluent.cloud:9092
        - name: KSQL_KSQL_INTERNAL_TOPIC_REPLICAS
          value: "3"
        - name: KSQL_KSQL_LOGGING_PROCESSING_STREAM_AUTO_CREATE
          value: "true"
        - name: KSQL_KSQL_LOGGING_PROCESSING_TOPIC_AUTO_CREATE
          value: "true"
        - name: KSQL_KSQL_LOGGING_PROCESSING_TOPIC_REPLICATION_FACTOR
          value: "3"
        - name: KSQL_KSQL_SINK_REPLICAS
          value: "3"
        - name: KSQL_KSQL_STREAMS_REPLICATION_FACTOR
          value: "3"
        - name: KSQL_LISTENERS
          value: <http://0.0.0.0:8088>
        - name: KSQL_SASL_JAAS_CONFIG
          value: |
            org.apache.kafka.common.security.plain.PlainLoginModule required username="USERNAME" password="PASSOWRD";
        - name: KSQL_SASL_MECHANISM
          value: PLAIN
        - name: KSQL_SECURITY_PROTOCOL
          value: SASL_SSL
        image: confluentinc/ksqldb-server:0.10.1
        imagePullPolicy: ""
        name: ksqldb-server
        ports:
        - containerPort: 8088
        resources: {}
      hostname: ksqldb-server
      restartPolicy: Always
      serviceAccountName: ""
      volumes: []
and I need to replace USERNAME and PASSWORD 🙂
I work with Pulumi, and I can manipulate the yaml before getting deployed in order to replace USERNAME and PASSWORD with the right values.
what I do not like of my current implementation is that I am binded to this deployment structure and it is very inflexible
Is there a way to pass something link another yaml to the deployment file which contains the right values and reference those?
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valueFrom:
            secretKeyRef:
              key:
can I put the pulumi config key? 🙂
k

kind-mechanic-53546

08/05/2020, 11:56 AM
Check out this stack
specifically,
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// Create secret from MongoDB connection string.
const mongoConnStrings = new k8s.core.v1.Secret(
    "mongo-secrets",
    {
        metadata: { name: "mongo-secrets", namespace: config.appsNamespaceName},
        data: mongoHelpers.parseConnString(cosmosdb.connectionStrings),
    },
    { provider },
);
and
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name: "WORDPRESS_DATABASE_PASSWORD",
                                valueFrom: {
                                    secretKeyRef: {
                                        name: mariadbSecret.metadata.name,
                                        key: "mariadb-password"
                                    }
                                }
from here
p

proud-spoon-58287

08/05/2020, 12:58 PM
thanks @kind-mechanic-53546
@kind-mechanic-53546 This is all clear now thanks
only thing I do not understand is this
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// Create a Secret with the database credentials.
const databaseSecret = new k8s.core.v1.Secret("db-secret", {
    stringData: {
        "database-username": config.databaseUsername,
        "database-password": config.databasePassword,
    }
}, { provider: provider });
config.X
does not exists
but I can do config.get(SECRET-KEY)
but I got an error
can you help?
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const config = new pulumi.Config();
const ksqlDbSecret = new k8s.core.v1.Secret("ksqldb-secret", {
    stringData: {
        'kafka-cluster-username': config.get('kafkaApiKey'),
        'kafaka-cluster-password': config.get('kafkaApiSecret')
    }
}, { provider: clusterProvider });
that has compilation errors
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'kafka-cluster-username': config.requireSecret('kafkaApiKey'),
        'kafaka-cluster-password': config.requireSecret('kafkaApiSecret')
that sorts it 🙂
@kind-mechanic-53546 got another question
@billowy-army-68599 this does not work
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const config = new pulumi.Config();
const ksqlDbSecret = new k8s.core.v1.Secret("ksqldb-secret", {
    stringData: {
        'kafka-cluster-username': config.get('kafkaApiKey'),
        'kafaka-cluster-password': config.get('kafkaApiSecret')
    }
}, { provider: clusterProvider });
pulumi asks me to set 'kafka-cluster-username' ...?
thought it is a key : value
b

billowy-army-68599

08/05/2020, 4:15 PM
can you show the error?
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