define host {
    use linux-server            ; Name of host template to use
    host_name               srv
    alias                   srv
    address                 172.20.10.11
}
  define service{
        use                             generic-service
        host_name                       srv
        service_description             WWW
        check_command                   check_http
}
  define service{
        use                             generic-service
        host_name                       srv
        service_description            SSH
        check_command                   check_ssh
}