Broke apart the playbook into roles.

iot/roles/influxdb/defaults/main.yaml

@@ -0,0 +1,6 @@
+---
+# Default variables for InfluxDB role
+influx_user: "{{ ansible_user }}"
+influx_image: "influxdb:latest"
+influx_directory: "/var/lib/influxtestroledir"
+influx_container: "influxtestrole"

iot/roles/influxdb/tasks/main.yaml

@@ -0,0 +1,50 @@
+---
+# Tasks for InfluxDB role
+- getent:
+    database: passwd
+    key: "{{ influx_user }}"
+    split: ":"
+
+- name: Pull InfluxDB image
+  docker_image:
+    name: "{{ influx_image }}"
+    source: pull
+    force_source: yes
+
+- name: Ensure Influx Directory exists
+  file:
+      path: "{{ influx_directory }}"
+      state: directory
+      group: "{{ influx_user }}"
+      owner: "{{ influx_user }}"
+      mode: 0755
+
+- name: Ensure Influx Data Directory exists
+  file:
+      path: "{{ influx_directory }}/data"
+      state: directory
+      group: "{{ influx_user }}"
+      owner: "{{ influx_user }}"
+      mode: 0755
+
+- name: Ensure Influx Config Directory exists
+  file:
+      path: "{{ influx_directory }}/config"
+      state: directory
+      group: "{{ influx_user }}"
+      owner: "{{ influx_user }}"
+      mode: 0755
+
+- name: Create InfluxDB container
+  docker_container:
+    name: "{{ influx_container }}"
+    image: "{{ influx_image }}"
+    state: started
+    restart_policy: "unless-stopped"
+    user: "{{ getent_passwd[influx_user][1] }}:{{ getent_passwd[influx_user][2] }}"
+    published_ports:
+      - 127.0.0.1:8088:8086
+    volumes:
+      - "{{ influx_directory }}/data:/var/lib/influxdb2"
+      - "{{ influx_directory }}/config:/etc/influxdb2"
+