build(metal): add target for ansible-console

docs/src/tutorials/run-commands-on-multiple-nodes.md

@@ -2,15 +2,15 @@
 
 Use [ansible-console](https://docs.ansible.com/ansible/latest/cli/ansible-console.html):
 
-```
-ansible-console -i metal/inventories/prod.yml -u root
+```sh
+cd metal
+make console
 ```
 
-For example:
-
-`root@all (4)[f:5]$ uptime`
+Then enter the command(s) you want to run, for example:
 
 ```
+root@all (4)[f:5]$ uptime
 metal0 | CHANGED | rc=0 >>
  10:52:02 up 2 min,  1 user,  load average: 0.17, 0.15, 0.06
 metal1 | CHANGED | rc=0 >>

metal/Makefile

@@ -17,5 +17,9 @@ cluster:
 		--inventory inventories/${env}.yml \
 		cluster.yml
 
+console:
+	ansible-console \
+		--inventory inventories/${env}.yml
+
 vagrant:
 	vagrant up