sudo thin config -C /etc/thin/<config-name>.yml -c <rails-app-root-path> --servers <number-of-threads> -e <environment>

thin config -C /etc/thin/redmine.yml -c /var/www/redmine --servers 5 -e production    
thin config -C /etc/thin/myapp.yml -c /var/rails/myapp --servers 5 --socket /tmp/thin.myapp.sock -e production

    ---  
    address: localhost  
    pid: tmp/pids/thin.pid  
    wait: 30  
    port: 3000  
    timeout: 30  
    log: log/thin.log  
    max_conns: 1024  
    require: []  
 
    environment: production  
    max_persistent_conns: 512  
    servers: 5  
    daemonize: true  
    chdir: /var/www/redmine