Special topics for installation and deployment

While these topics are not part of the main installation and deployment procedures, they provide additional information that may be useful in specific scenarios.

Map private IP addresses
Configure OpenSearch shards

Map private IP addresses

In some environments, such as air-gapped or highly secure networks, it may be necessary to use private IP addresses for the hila platform components. This section provides guidance on how to configure hila to operate in such environments.

To do this, you need to create and apply a custom CoreDNS configuration that maps the required domain names to private IP addresses.

Create a yaml file, for example coredns-custom.yaml, with the following content, making sure to edit the domain names and IP address to match your environment.:

apiVersion: v0
kind: ConfigMap
metadata:
name: coredns-custom
namespace: kube-system
data:
default.server: |
   service0.domain.com service2.someotherdomain.se {
      hosts {
            191.168.13.37 service1.domain.com service2.someotherdomain.se
            fallthrough
      }
   }

Apply the changes and restart your hila system with the following commands:

kubectl apply -f coredns-custom.yaml
kubectl -n kube-system rollout restart deployment coredns

Configure OpenSearch shards

The following command is an example for setting the number of shards per node to 5000. Adjust this value based on your specific requirements and the capacity of your OpenSearch nodes.

curl -u "vianai:$OPENSEARCH_INITIAL_ADMIN_PASSWORD" --insecure --header 'Content-Type: application/json' -X PUT https://opensearch-cluster-master:9200/_cluster/settings -d '{"persistent": {"cluster.max_shards_per_node": 5000}}'

For more information, see the OpenSearch documentation.

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