helmchart to deploy clowder2 in kubernetes

[robkooper]

This is an initial helm chart

[robkooper]

this is still work in progress, however we got it to work on local machine with docker/kubernetes

• need to import keycloak.json realm @longshuicy is minifying it
• need to import theme into keycloak container
• need to setup redirect in keycloak.json file when importing
• need to fix hardcode redirect in backend deployment
• elasticsearch fails in backend, hardcoded url? WARNING:elastic_transport.node_pool:Node <Urllib3HttpNode(http://localhost:9200)> has failed for 2 times in a row, putting on 2 second timeout
• different username/password for minio fails, hardcoded username/password in backend?
• allow to configure external keycloak
• setup externalsecrets as a way to not hardcode the secrets in the helm chart.

[robkooper]

this fixes #112

[longshuicy]

for minio i see these hardcoded in config.py?

 MINIO_SERVER_URL: str = "localhost:9000"
    MINIO_BUCKET_NAME: str = "clowder"
    MINIO_ACCESS_KEY: str = "minioadmin"
    MINIO_SECRET_KEY: str = "minioadmin"
    MINIO_UPLOAD_CHUNK_SIZE: int = 10 * 1024 * 1024

For elasticsearch I see those:

# Elasticsearch local config
    elasticsearch_url = "http://localhost:9200"
    elasticsearch_no_of_shards = 5
    elasticsearch_no_of_replicas = 5

[lmarini]

Is this ready to go?

[robkooper]

Did the hardcoded values in minio get fixed? One option is to merge for now and create some issues for the left over pieces.

[longshuicy]

I created issues to capture the things left to do #200
Maybe a few are duplicated even but we'll see