fix variable for name of source container

Signed-off-by: Jakub Sokołowski <jakub@status.im>

README.md

@@ -6,7 +6,15 @@ The image used by default is [statusteam/geth_exporter:latest](https://hub.docke
 
 # Configuration
 
+The main thing to change is name of container to connect to and IPC path:
 ```yaml
+geth_source_cont_name:
+```
+
+The rest of the defaults should be fine, but if you want to change anything change those:
+```yaml
+geth_expo_cont_name: 'metrics-geth-01'
+geth_expo_cont_port: 9300
 ```
 
 # Known Issues

defaults/main.yml

@@ -1,4 +1,9 @@
 ---
+# source container
+geth_source_cont_name: ~
+geth_source_cont_ipc_path: '/data/geth.ipc'
+
+# metrics container settings
 geth_expo_cont_image: statusteam/geth_exporter:latest
 geth_expo_cont_name: geth-exporter
 geth_expo_cont_addr: '0.0.0.0'
@@ -13,6 +18,7 @@ geth_expo_consul_tags:
   - metrics
   - geth
 
+# generic container settings
 cont_state: started
 cont_recreate: false
 cont_restart: false

tasks/consul.yml

@@ -9,7 +9,7 @@
         address: '{{ geth_expo_consul_addr }}'
         tags: '{{ geth_expo_consul_tags }}'
         meta:
-          container: '{{ geth_expo_cont_name }}'
+          container: '{{ geth_source_cont_name | mandatory }}'
         checks:
           - id: '{{ geth_expo_consul_name }}'-health
             name: 'geth-exporter healthcheck'

tasks/container.yml

@@ -10,9 +10,9 @@
     recreate: '{{ cont_recreate }}'
     restart: '{{ cont_restart }}'
     entrypoint: geth_exporter 
-    volumes_from: '{{ cont_name }}'
+    volumes_from: '{{ geth_source_cont_name | mandatory }}'
     command: |
-      -ipc /data/geth.ipc
+      -ipc {{ geth_source_cont_ipc_path }}
       -port 9200
     ports:
       - '{{ geth_expo_cont_port }}:9200/tcp'