K8’s and Heartbreak

Words = Albums

Deploy me!

Build the docker images
```
docker-compose build
```

Deploy the app to Kubernetes as a stack using the compose file:

export DOCKER_ORCHESTRATOR=kubernetes
docker stack deploy k8s-and-heartbreak -c docker-compose.yml

Note:

WARNING: experimental environment variable DOCKER_ORCHESTRATOR is set. Please use DOCKER_STACK_ORCHESTRATOR instead

Note: On windows, had to enable Kubernetes from the settings in docker

Kubernetes Debugging (Because why would anything work right the first time)

Having to debug the albums failure
Get the services
```
kubectl get services
```

NAME            TYPE           CLUSTER-IP     EXTERNAL-IP   PORT(S)          AGE
albums-here     ClusterIP      None           <none>        55555/TCP        10m
db              ClusterIP      None           <none>        55555/TCP        20m
kubernetes      ClusterIP      10.96.0.1      <none>        443/TCP          22m
web             ClusterIP      None           <none>        55555/TCP        20m
web-published   LoadBalancer   10.110.251.1   localhost     8080:32681/TCP   20m

Get the pods
Input:
```
kubectl get pods
```

Output:

kubectl get pods
NAME                     READY   STATUS             RESTARTS   AGE
albums-dc8878d5d-6v464   0/1     CrashLoopBackOff   4          2m39s
albums-dc8878d5d-ln9m2   0/1     CrashLoopBackOff   4          2m39s
albums-dc8878d5d-mkpcj   0/1     CrashLoopBackOff   4          2m39s
albums-dc8878d5d-rmgbv   0/1     CrashLoopBackOff   4          2m39s
albums-dc8878d5d-zx898   0/1     CrashLoopBackOff   4          2m39s
db-bbb557c66-7cb6j       1/1     Running            0          26m
web-8658499d7c-8g4db     1/1     Running            0          26m

Get logs: kubectl logs albums-dc8878d5d-mkpcj

Example:

Error: Unable to access jarfile /app/words.jar

Why?
```
<artifactId>albums</artifactId>
```
and then the Dockerfile points to /app/words.jar => wrong
/app/albums.jar => correct

Question: How do I update a deployment?
Answer: ?