Create and install script to re-start Apache Solr server for Drupal and add Basic HTTP authetication

I have installed and Apache-solr server (version 3.6 running with tomcat) in my VPS to index content and run queries on a Drupal 7 website. Whenever tomcat restarts, Solr needs to be restarted. I need to implement a script and anything else that might be needed to re-start solr automatically and ensure it stays running. I also need to implement some basic http authentication to ensure I can protect my indexes. Please only apply if you have had previous experience doing a similar job. There are different ways of doing this so please state your preferred approach on your application.