# Description

DaemonsetDNS kubernetes manifests to install the daemonsetdns deployment in the `daemonsetdns` namespace.

A `daemonsetdns` service is created allowing all clients to find the IP of a pod in a daemonset on a particular node.

Requests should be made to port 53 of the service at

```
daemonsetdns.daemonsetdns.svc.cluster.local.
```

Requests should be of the form

```
<node name>.<daemonset name>.<namespace>.pod-locator.
```

Further details can be found in the daemonsetdns Readme at `cmd/sds/daemonsetdns/README.md`

# Manifest updates

The daemonsetdnstest component embeds the base kustomization of these manifests.
If these manifests are modified you should recreate the generated manifest using
the command

```bash
bazel run //pkg/sds/k8s/daemonsetdns/daemonsetdnstest:daemonsetdns_base_manifests
```

# Environment Variables

## Environment Setup

Create an `.env` file with the following variables:

```dotenv
# gke, sds, or generic. use "generic" for any K8s cluster that isn't GKE or 
# SDS.
export CLUSTER_PROVIDER=
# uuid is necessary for generating a cluster_hash, existing resources should
# have this in their annotations already but one can be created by using
# uuidgen
export CLUSTER_UUID=
# google cloud project id
export GCP_PROJECT_ID=
# defaults to us and east1-b, otherwise needs to be valid GCP value
export GCP_REGION=
export GCP_ZONE=
# set to same value as gcp project ID when developing within a single
# project.
export FOREMAN_GCP_PROJECT_ID=
# enables split scheduling
export INFRA=true
# name of the kubeconfig context to use to schedule infra objects; 
# default behavior is to apply all objects to the same K8s context
# To deploy to local IEN clusters, set the INFRA_CONTEXT to the context name specified in local kubeconfig
export INFRA_CONTEXT=
# target namespace for all applied infrastructure resources, including 
# dependencies; the namespace is created if it does not already exist.
export INFRA_NAMESPACE=
```

# Applying the Pallet

The following is the example applying daemonsetdns to an sds cluster

```shell
source ~/.env

lift pack config/pallets/sds/daemonsetdns
lift apply config/pallets/sds/daemonsetdns
```

NOTE: For pushing to local registry, add the flag -registry localhost:21700 to the pack and apply commands.