Cannot read configmap with name: [xx] in namespace

Question

New to k8s.

Trying to read values from profile based config map. My configmap exists in default namespace. But, spring boot is not pickingup the values.

Config map looks like:

apiVersion: v1
kind: ConfigMap
metadata:
    name: example-configmap-overriding-new-01
data:
    application.properties: |-
        globalkey = global key value
    application-qa.properties: |-
        globalkey = global key qa value    
    application-prod.properties: |-
        globalkey = global key prod value

The config map is created in default namespace too.

kubectl get configmap -n default 

NAME                                  DATA   AGE
example-configmap-overriding-new-01   3      8d

My deployment file looks like

apiVersion: apps/v1
kind: Deployment
metadata: 
    name: demo-configmapk8testing
spec:  
    selector:
        matchLabels:
            app: demo-configmapk8testing
replicas: 1
template: 
    metadata:
        labels:
            app: demo-configmapk8testing        
    spec:
        containers:
          - name: demo-configmapk8testing
            image: Path to image
            ports:
            - containerPort: 8080
            args: [
            "--spring.profiles.active=prod",
            "--spring.application.name=example-configmap-overriding-new-01",
            "--spring.cloud.kubernetes.config.name=example-configmap-
            overriding-new-01",
            "--spring.cloud.kubernetes.config.namespace=default",
            "--spring.cloud.kubernetes.config.enabled=true"]
            envFrom:
            - configMapRef:
                name: example-configmap-overriding-new-01

But the spring boot log says:-

2019-07-02 22:10:38.092  WARN 1 --- [           main] 
o.s.c.k.config.ConfigMapPropertySource   : Can't read configMap with name: 
[example-configmap-overriding-new-01] in namespace:[default]. Ignoring

2019-07-02 22:10:38.331  INFO 1 --- [           main] 
b.c.PropertySourceBootstrapConfiguration : Located property source: 
CompositePropertySource {name='composite-configmap', propertySources= 
[ConfigMapPropertySource {name='configmap.example-configmap-overriding-new- 
01.default'}]}

2019-07-02 22:10:38.420  INFO 1 --- [           main] 
b.c.PropertySourceBootstrapConfiguration : Located property source: 
SecretsPropertySource {name='secrets.example-configmap-overriding-new- 
01.default'}

2019-07-02 22:10:38.692  INFO 1 --- [           main] 
c.e.c.ConfigconsumerApplication          : **The following profiles are 
active: prod**

--some logs--

Injection of autowired dependencies failed; nested exception is 
java.lang.IllegalArgumentException: **Could not resolve placeholder 
'globalkey' in value "${globalkey}"**

My spring boot config file looks like

@Configuration
public class ConfigConsumerConfig {

    @Value(value = "${globalkey}")
    private String globalkey;

    // with getter and setters 
}

My pom.xml has the following dependency too.

    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-kubernetes-config</artifactId>
        <version>1.0.2.RELEASE</version>
    </dependency>

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-configuration-processor</artifactId>
        <optional>true</optional>
    </dependency>

I am running minikube in my local machine. Am I missing something here?

Could someone share some inputs here.

Answer 1

the configmap manifest needs to be corrected. the format is incorrect

try this

apiVersion: v1
kind: ConfigMap
metadata:
  name: example-configmap-overriding-new-01
data:
  application.properties: |
    globalkey=global-key-value
  application-qa.properties: |
    globalkey=global-key-qa-value
  application-prod.properties: |
    globalkey=global-key-prod-value

you should mount configmap as volume to use the config file in your application

          volumeMounts:
          - name: config
            mountPath: /config
        volumes:
        - name: config
          configMap:        
            name: example-configmap-overriding-new-01

Answer 2

Can you please try to mount your configmap also, may be that can help

volumeMounts:
- mountPath: /app/config
  name: example-configmap-overriding-new-01

volumes:
- name: example-configmap-overriding-new-01
  configMap:
      name: example-configmap-overriding-new-01

Let me know please if it works. Thanks

Corrected syntax mistake