Update spire-agent daemonset to use node IP from downward API (#4147). (#117)

* Update spire-agent daemonset to use node IP from downward API (#4147).

Signed-off-by: Krishnakumar Venkataraman <krishna_kumar08@infosys.com>

k8s/quickstart/agent-configmap.yaml

@@ -34,6 +34,7 @@ data:
           # Minikube does not have a cert in the cluster CA bundle that
           # can authenticate the kubelet cert, so skip validation.
           skip_kubelet_verification = true
+          node_name_env = "MY_NODE_NAME"
         }
       }
 

k8s/quickstart/agent-daemonset.yaml

@@ -30,6 +30,11 @@ spec:
         - name: spire-agent
           image: ghcr.io/spiffe/spire-agent:1.5.1
           args: ["-config", "/run/spire/config/agent.conf"]
+          env:
+          - name: MY_NODE_NAME
+            valueFrom:
+              fieldRef:
+                fieldPath: status.podIP
           volumeMounts:
             - name: spire-config
               mountPath: /run/spire/config