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I'm trying to learn Helm with the help of a book, through a minikube instance.

This one says: after having declared some charts repository, just install Drupal, for example, with the command:

helm install mysite bitnami/drupal

that will soon respond that it is ready (what it does),
and that it is ready to be joined on http://drupal.local/,
and this doesn't work at all, the web site isn't found.

I wonder what's happening, and type a command:

sudo kubectl get pods

and see this:

NAME                            READY   STATUS    RESTARTS        AGE    IP           NODE       NOMINATED NODE   READINESS GATES
mysite-drupal-d6d99c65f-lvtxf   1/1     Running   2 (2d17h ago)   6d8h   172.17.0.5   minikube   <none>           <none>
mysite-mariadb-0                1/1     Running   2 (2d17h ago)   6d8h   172.17.0.2   minikube   <none>           <none>

And I would like to understand what can trouble my installation if the book says it should work like a charm.

But when I do a:

sudo docker ps

I'm receiving an empty list of active containers. (stopped ones aren't related to Drupal or Kubernetes)

CONTAINER ID   IMAGE                    COMMAND                  CREATED        STATUS      PORTS                                         NAMES

Where are my pods? The ones that helm/kubernetes say that they are running?

I'd like to investigate their logs, for instance.

I've found the drupal's logs by a

kubectl logs mysite-drupal-d6d99c65f-lvtxf --all-containers

and it doesn't look really unhappy,

drupal 12:37:14.77 
drupal 12:37:14.77 Welcome to the Bitnami drupal container
drupal 12:37:14.77 Subscribe to project updates by watching https://github.com/bitnami/containers
drupal 12:37:14.77 Submit issues and feature requests at https://github.com/bitnami/containers/issues
drupal 12:37:14.77 
drupal 12:37:14.77 INFO  ==> ** Starting Drupal setup **
realpath: /bitnami/apache/conf: No such file or directory
drupal 12:37:14.79 INFO  ==> Configuring the HTTP port
drupal 12:37:14.79 INFO  ==> Configuring the HTTPS port
drupal 12:37:14.79 INFO  ==> Configuring Apache ServerTokens directive
drupal 12:37:14.80 INFO  ==> Configuring PHP options
drupal 12:37:14.80 INFO  ==> Setting PHP expose_php option
drupal 12:37:14.81 INFO  ==> Validating settings in MYSQL_CLIENT_* env vars
drupal 12:37:14.83 WARN  ==> You set the environment variable ALLOW_EMPTY_PASSWORD=yes. For safety reasons, do not use this flag in a production environment.
drupal 12:37:14.86 INFO  ==> Restoring persisted Drupal installation
drupal 12:37:14.90 INFO  ==> Trying to connect to the database server

drupal 12:37:55.95 INFO  ==> ** Drupal setup finished! **
drupal 12:37:55.96 INFO  ==> ** Starting Apache **
[Thu Sep 01 12:37:56.024007 2022] [ssl:warn] [pid 1] AH01909: www.example.com:8443:0 server certificate does NOT include an ID which matches the server name
[Thu Sep 01 12:37:56.024617 2022] [ssl:warn] [pid 1] AH01909: www.example.com:443:0 server certificate does NOT include an ID which matches the server name
[Thu Sep 01 12:37:56.040330 2022] [ssl:warn] [pid 1] AH01909: www.example.com:8443:0 server certificate does NOT include an ID which matches the server name
[Thu Sep 01 12:37:56.040483 2022] [ssl:warn] [pid 1] AH01909: www.example.com:443:0 server certificate does NOT include an ID which matches the server name
[Thu Sep 01 12:37:56.049575 2022] [mpm_prefork:notice] [pid 1] AH00163: Apache/2.4.54 (Unix) OpenSSL/1.1.1n configured -- resuming normal operations
[Thu Sep 01 12:37:56.049597 2022] [core:notice] [pid 1] AH00094: Command line: '/opt/bitnami/apache/bin/httpd -f /opt/bitnami/apache/conf/httpd.conf -D FOREGROUND'
172.17.0.1 - - [01/Sep/2022:12:37:56 +0000] "GET /user/login HTTP/1.1" 200 17473
172.17.0.1 - - [01/Sep/2022:12:38:01 +0000] "GET /user/login HTTP/1.1" 200 17473

but it doesn't give me a clue about where my underlying containers, installation of MariaDB Drupal uses, physically are, if they aren't on Docker, which I believed, was the default choice of Kubernetes/Helm.

Marc Le Bihan
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  • perhaps your kubernetes is not configured to use docker as container runtime. – The Fool Sep 01 '22 at 13:06
  • @TheFool Thanks. But then, what will it use instead, by default? Because kubernetes says it knows these pods installed and running: I deduct it installed drupal component somewhere... But where? – Marc Le Bihan Sep 01 '22 at 13:08
  • Now using `crictl` is encouraged for these kind of operations. https://kubernetes.io/docs/tasks/debug/debug-cluster/crictl/#:~:text=crictl%20is%20a%20command%2Dline,in%20the%20cri%2Dtools%20repository. – P.... Sep 01 '22 at 13:14
  • @P.... But I don't have it. A `crictl` or `sudo crictl` responds _command not found_. – Marc Le Bihan Sep 01 '22 at 13:17
  • The Kubernetes application is running in a possibly-remote cluster; you shouldn't expect to be able to use `docker` or similar commands to interact with the containers directly. You'll need to somehow make your application accessible from outside the cluster; [What's the difference between ClusterIP, NodePort and LoadBalancer service types in Kubernetes?](https://stackoverflow.com/questions/41509439/whats-the-difference-between-clusterip-nodeport-and-loadbalancer-service-types) could be a good starting point. – David Maze Sep 01 '22 at 13:27
  • @MarcLeBihan the command needs to be installed on the node where POD is scheduled. – P.... Sep 01 '22 at 13:43
  • Where is your Kubernetes Cluster ? – Reda E. Sep 01 '22 at 13:50
  • If you are using minikube, then you will not see containers on your laptop. You will find containers inside the minikube vm. Do `minikube ssh` to login into it. – P.... Sep 01 '22 at 14:40
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    is your cluster running?. If minikube is up and running, it should be listed as a container under docker ps. Also, did helm install fail? – JasonY Sep 14 '22 at 20:17
  • @JasonY Sorry I wasn't able to check these days. I hope this week. – Marc Le Bihan Sep 14 '22 at 20:48

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