fix ansible systemd and enable address/port setting in ansible vars (#40

)

* fix systemd reload
* enable address/port in ansible role
* remove restarted from enable handler

ansible/roles/ansible-cassandra-exporter/README.md

@@ -9,6 +9,8 @@ Role Variables
 | Name           | Default Value | Description                        |
 | -------------- | ------------- | -----------------------------------|
 | `cassandra_exporter_version` | 2.2.0 | Cassandra exporter package version |
+| `cassandra_listen_address` | 0.0.0.0 | Cassandra exporter listening address |
+| `cassandra_listen_port` | 8080 | Cassandra exporter listening port |
 | `cassandra_exporter_binary_url` | https://github.com/criteo/cassandra_exporter/releases/download/{{cassandra_exporter_version}}/cassandra_exporter-{{cassandra_exporter_version}}-all.jar | Cassandra exporter jar download location |
 | `cassandra_exporter_config_url` | https://raw.githubusercontent.com/criteo/cassandra_exporter/master/config.yml | Cassandra exporter config download location |
 | `cassandra_exporter_user` | cassandra-exp | UNIX user to run the binary |

ansible/roles/ansible-cassandra-exporter/defaults/main.yml

@@ -2,6 +2,8 @@
 
 cassandra_exporter_version: 2.2.0
 
+cassandra_listen_address: "0.0.0.0"
+cassandra_listen_port: "8080"
 cassandra_exporter_binary_url: 'https://github.com/criteo/cassandra_exporter/releases/download/{{cassandra_exporter_version}}/cassandra_exporter-{{cassandra_exporter_version}}-all.jar'
 cassandra_exporter_config_url: 'https://raw.githubusercontent.com/criteo/cassandra_exporter/master/config.yml'
 

ansible/roles/ansible-cassandra-exporter/handlers/main.yml

@@ -1,7 +1,10 @@
 ---
 
 - name: reenable cassandra exporter service
-  command: systemctl reenable prometheus-cassandra-exporter.service
+  systemd:
+    daemon_reload: yes
+    enabled: yes
+    name: prometheus-cassandra-exporter
 
 - name: reinit cassandra exporter
   command: initctl reload-configuration

ansible/roles/ansible-cassandra-exporter/tasks/main.yml

@@ -24,6 +24,7 @@
   with_items:
     - '{{ cassandra_exporter_root_dir }}'
     - '{{ cassandra_exporter_dist_dir }}'
+    - '{{ cassandra_exporter_config_dir }}'
 
 - name: 'download cassandra exporter binary'
   get_url:
@@ -35,6 +36,18 @@
     url: '{{ cassandra_exporter_config_url }}'
     dest: '{{ cassandra_exporter_config_dir }}/config.yml'
 
+- name: 'set cassandra listen address'
+  lineinfile:
+    regexp: "^listenAddress"
+    dest:  "{{ cassandra_exporter_config_dir }}/config.yml"
+    line: "listenAddress: {{ cassandra_listen_address }}"
+
+- name: 'set cassandra listen port'
+  lineinfile:
+    regexp: "^listenPort"
+    dest:  "{{ cassandra_exporter_config_dir }}/config.yml"
+    line: "listenPort: {{ cassandra_listen_port }}"
+
 - name: 'generate the shell script'
   template:
     src: cassandra_exporter.sh.j2