✨ Add support for nomad's client template config (#175)

README.md

@@ -429,6 +429,23 @@ nomad_host_networks:
 - Install Docker subsystem on nodes?
 - Default value: **false**
 
+### `nomad_template_config`
+- Allow you configure client's [template config](https://developer.hashicorp.com/nomad/docs/configuration/client#template-parameters).
+- Default: {}
+
+Example:
+
+```yaml
+nomad_template_config:
+  vault_retry:
+    attempts: 12
+    backoff: "750ms"
+    max_backoff: "2m"
+  wait:
+    min: "10s"
+    max: "4m"
+```
+
 ### `nomad_plugins`
 - Allow you configure nomad plugins.
 - Default: {}

defaults/main.yml

@@ -125,6 +125,7 @@ nomad_meta: {}
 nomad_bootstrap_expect: "{{ nomad_servers | count or 3 }}"
 nomad_chroot_env: false
 nomad_plugins: {}
+nomad_template_config: {}
 
 ### Addresses
 nomad_bind_address: "{{ hostvars[inventory_hostname]['ansible_'+ nomad_iface ]['ipv4']['address'] }}"

templates/client.hcl.j2

@@ -77,6 +77,26 @@ client {
     {% endfor -%}
     }
     {% endif %}
+
+    {% macro template_config(config, count=1, width=4) %}
+    {% set next_count = count + 1 %}
+    {% for key, value in config.items() %}
+    {% if value is mapping %}
+    {{ key | indent(count*width, first=True) }} {
+    {{ template_config(value, count=next_count, width=width) }}
+    {{ '}' | indent(count*width, first=True) }}
+    {% else %}
+    {{ key | indent(count*width, first=True) }} = {% if value is string %}"{{ value }}"{% else %}{{ value | string | lower }}{% endif %}
+
+    {% endif %}
+    {% endfor %}
+    {% endmacro %}
+
+    {% if nomad_template_config|length >0 %}
+    template {
+    {{ template_config(nomad_template_config) | replace('\'', '\"') }}
+    }
+    {% endif %}
 }
 
 {% macro plugin_config(config, count=1, width=4) %}