TL;DR

Setup a initialized OSM tile-server stack into k3d

# install cluster
./bin/createCluster.sh

# delete initialised database
sudo rm -rf ./tmp/postgis/data

# install cluster
# disconnect machine from the Internet
./bin/createClusterFromCache.sh

Still work in progress next step is the Ingres configuration

Some more details

Requirement

• Installed k3d
• Installed kubectl
• Installed helm

Steps to setup

Prepare the file system

mkdir -p tmp/postgis
mkdir -p tmp/tiles
mkdir -p tmp/import
mkdir -p tmp/dockerMirrorCache
mkdir -p tmp/dockerMirrorCerts

Provide a docker registry proxy

Create a fresh k3d cluster

We create a fresh cluster and mount three additional directories into it. The three directories are later used to serialize the postgis data, to store the rendered tiles and to take a initial data for the import.

k3d cluster create "osmTest" \
    -v `pwd`/tmp/postgis:/postgis \
    -v `pwd`/tmp/tiles:/tiles \
    -v `pwd`/tmp/import:/import \
    --agents 2

Provide host directories as volumes for persistence

# create the volumes
# Attention, this is wrong because k8 is running inside a docker container and therefor the
# common host directories are not visible
#export BASE_PATH=`pwd`; envsubst < init/postgis_volume_init.yaml | kubectl apply -f -
#export BASE_PATH=`pwd`; envsubst < init/tiles_volume_init.yaml | kubectl apply -f -

kubectl apply -f init/pv/postgis_pv.yaml
kubectl apply -f init/pv/tiles_pv.yaml
kubectl apply -f init/pv/init_pv.yaml

# bound the volumes to specific volume claims
kubectl apply -f init/pvc/postgis_pvc.yaml
kubectl apply -f init/pvc/tiles_pvc.yaml

# check the existence of the volume
kubectl get pv --all-namespaces
kubectl get pvc --all-namespaces

Install Postgresql

(documentation reference: https://github.com/bitnami/charts/tree/master/bitnami/postgresql)

• persistence.existingClaim
• persistence.size
• persistence.storageClass

helm install osm-db \
    -f init/others/postgis/bitnami_postgis_values.yaml \
    bitnami/postgresql

Install a job that initialize Postgis and import the OSM data

kubectl apply -f $basePath/init/jobs/postgis_init_job.yaml

Play around with Postgis

kubectl run osm-db-postgresql-client --rm -it --restart='Never' --namespace default --image docker.io/bitnami/postgresql:11.9.0-debian-10-r48 --env="PGPASSWORD=$POSTGRES_PASSWORD" --command -- psql --host osm-db-postgresql -U osm_db -d osm_db -p 5432

Other useful commands

# delete persistent volume
kubectl delete pv <pv_name> --grace-period=0 --force

# evaluate why a pod isn't starting
kubectl describe pod osm-db-postgresql-0

# decode secret value
kubectl get secrets/osm-db-user-pass --template={{.data.password}} | base64 -d

helm create osm_stack
cd osm_stack
helm dependency build