Error installing TimescaleDB with K8S / Helm : MountVolume.SetUp failed for volume "certificate" : secret "timescaledb-certificate" not found - kubernetes

Question

I just tried to install timescaleDB Single with Helm in minikube on Ubuntu 20.04.
After installing via:
helm install timescaledb timescaledb/timescaledb-single --namespace espace-client-v2
I got the message:
➜ ~ helm install timescaledb timescaledb/timescaledb-single --namespace espace-client-v2
NAME: timescaledb
LAST DEPLOYED: Fri Aug 7 17:17:59 2020
NAMESPACE: espace-client-v2
STATUS: deployed
REVISION: 1
TEST SUITE: None
NOTES:
TimescaleDB can be accessed via port 5432 on the following DNS name from within your cluster:
timescaledb.espace-client-v2.svc.cluster.local
To get your password for superuser run:
# superuser password
PGPASSWORD_POSTGRES=$(kubectl get secret --namespace espace-client-v2 timescaledb-credentials -o jsonpath="{.data.PATRONI_SUPERUSER_PASSWORD}" | base64 --decode)
# admin password
PGPASSWORD_ADMIN=$(kubectl get secret --namespace espace-client-v2 timescaledb-credentials -o jsonpath="{.data.PATRONI_admin_PASSWORD}" | base64 --decode)
To connect to your database, chose one of these options:
1. Run a postgres pod and connect using the psql cli:
# login as superuser
kubectl run -i --tty --rm psql --image=postgres \
--env "PGPASSWORD=$PGPASSWORD_POSTGRES" \
--command -- psql -U postgres \
-h timescaledb.espace-client-v2.svc.cluster.local postgres
# login as admin
kubectl run -i --tty --rm psql --image=postgres \
--env "PGPASSWORD=$PGPASSWORD_ADMIN" \
--command -- psql -U admin \
-h timescaledb.espace-client-v2.svc.cluster.local postgres
2. Directly execute a psql session on the master node
MASTERPOD="$(kubectl get pod -o name --namespace espace-client-v2 -l release=timescaledb,role=master)"
kubectl exec -i --tty --namespace espace-client-v2 ${MASTERPOD} -- psql -U postgres
It seemed to have installed well.
But then, when executing:
PGPASSWORD_POSTGRES=$(kubectl get secret --namespace espace-client-v2 timescaledb-credentials -o jsonpath="{.data.PATRONI_SUPERUSER_PASSWORD}" | base64 --decode)
Error from server (NotFound): secrets "timescaledb-credentials" not found
After that, I realized pod has not even been created, and it gives me the following errors
MountVolume.SetUp failed for volume "certificate" : secret "timescaledb-certificate" not found
Unable to attach or mount volumes: unmounted volumes=[certificate], unattached volumes=[storage-volume wal-volume patroni-config timescaledb-scripts certificate socket-directory timescaledb-token-svqqf]: timed out waiting for the condition
What should I do ?

Answer 1

I could do it. If the page https://github.com/timescale/timescaledb-kubernetes doesn't give much details about installation process, you can go here:
https://github.com/timescale/timescaledb-kubernetes/tree/master/charts/timescaledb-single
I had to use kustomize to generate content:
./generate_kustomization.sh my-release
and then it generate several files:
credentials.conf kustomization.yaml pgbackrest.conf timescaledbMap.yaml tls.crt tls.key
then I did:
kubectl kustomize ./
which generated a k8s yml file, which I saved with the name timescaledbMap.yaml
Finally, I did:
kubectl apply -f timescaledbMap.yaml
Then it created all necesarry secrets, and I could install chart
. Hope it helps others.