use host directory for opensearch data

Author: sjpb

ansible/roles/opensearch/defaults/main.yml

@@ -4,3 +4,4 @@
 
 opensearch_podman_user: "{{ ansible_user }}"
 opensearch_version: '2.1.0' # https://hub.docker.com/r/opensearchproject/opensearch/tags
+opensearch_data_path: /usr/share/opensearch/data

ansible/roles/opensearch/tasks/config.yml

@@ -18,7 +18,7 @@
     reload: yes
   become: true
 
-- name: Ensure parent directory exists
+- name: Ensure parent config directory exists
   file:
     state: directory
     path: "/etc/opensearch"

ansible/roles/opensearch/tasks/deploy.yml

@@ -1,4 +1,12 @@
 ---
+- name: Create data directory
+  file:
+    path: "{{ opensearch_data_path }}"
+    state: directory
+    owner: "{{ opensearch_podman_user }}"
+    group: "{{ opensearch_podman_user }}"
+  become: true
+  notify: Restart opensearch container
 
 - name: Create systemd unit file
   template:

ansible/roles/opensearch/templates/opensearch.service.j2

@@ -15,7 +15,7 @@ ExecStart=/usr/bin/podman run \
     --network slirp4netns:cidr={{ podman_cidr }} \
     --sdnotify=conmon --cgroups=no-conmon -d --replace --name opensearch --restart=no --user opensearch \
     --ulimit memlock=-1:-1 --ulimit nofile=65536:65536 \
-    --volume opensearch:/usr/share/opensearch/data \
+    --volume {{ opensearch_data_path }}:/usr/share/opensearch/data:U \
     --volume /etc/opensearch/internal_users.yml:/usr/share/opensearch/config/opensearch-security/internal_users.yml:ro \
     --volume /etc/opensearch/opensearch.yml:/usr/share/opensearch/config/opensearch.yml \
     --env node.name=opensearch --env discovery.type=single-node --env bootstrap.memory_lock=true --env "OPENSEARCH_JAVA_OPTS=-Xms512m -Xmx512m" \