I think you are asking two different questions:

1. How can I specify host(s) without an inventory? The answer to this is to use "-i tomcat-webApp, tomcat-all,". You must include the trailing comma after the last hostname.

      ansible-playbook DeployWar.yml \
      -i tomcat-webApp,tomcat-all,
   

   Reference: Run Ansible playbook without inventory

2. How can I pass multiple extra-vars from command line?

   • Option 2a: specify multiple extra-vars

   ansible-playbook DeployWar.yml \
   --extra-vars="testvar1=testing1" --extra-vars="testvar2=testing2"
   

   • Option 2b: pass one var and split it inside your playbook:

   ansible-playbook DeployWar.yml \
   --extra-vars="servers=tomcast-webApp tomcast-all"
   

   Then inside your playbook: {{ servers | split }}