add: basic openvpn node setup

roles/opensearch/templates/opensearch-data.yaml

@@ -0,0 +1,28 @@
+version: '3'
+services:
+  opensearch-{{ node_name }}:
+    image: opensearchproject/opensearch:latest
+    container_name: {{ node_name }}
+    environment:
+      - cluster.name=atlantis-opensearch-cluster
+      - node.name={{ node_name }}
+      - network.publish_host=ipv4.atlantishq.de
+      - transport.port=930{{ node_name.split('-')[-1] | int - 1 }}
+      - discovery.seed_hosts={{ ",".join(opensearch_seed_hosts) }}
+      - cluster.initial_cluster_manager_nodes={{ ",".join(opensearch_manager_nodes) }}
+      - bootstrap.memory_lock=true # Disable JVM heap memory swapping
+      - "OPENSEARCH_JAVA_OPTS=-Xms512m -Xmx512m"
+      - OPENSEARCH_INITIAL_ADMIN_PASSWORD={{ opensearch_admin_password }}
+    ulimits:
+      memlock:
+        soft: -1
+        hard: -1
+      nofile:
+        soft: 65536
+        hard: 65536
+    volumes:
+      - /data/opensearch/{{ node_name }}/:/usr/share/opensearch/data
+    ports:
+      - 920{{ node_name.split('-')[-1] | int - 1 }}:9200 # REST API
+      - 930{{ node_name.split('-')[-1] | int - 1 }}:930{{ node_name.split('-')[-1] | int - 1 }} # Data Transport
+      - 960{{ node_name.split('-')[-1] | int - 1 }}:9600 # Performance Analyzer