title: MongoDB Shell Startup Warnings on Linux Mint 18
body: <p>The warning messages are below. I'm using Linux Mint 18. When I start the database with "sudo service mongodb start" no warning signs, but when I run the "mongo" shell that's when I encounter this warning messages. Did I miss a step in the installation process? Any advice would be helpful, thank you.</p>
  
  <pre><code>--Warnings--
  Server has startup warnings: 
  2017-08-21T13:23:20.551-0700 I STORAGE  [initandlisten] 
  2017-08-21T13:23:20.551-0700 I STORAGE  [initandlisten] ** WARNING: Using the XFS filesystem is strongly recommended with the WiredTiger storage engine
  2017-08-21T13:23:20.551-0700 I STORAGE  [initandlisten] **          See http://dochub.mongodb.org/core/prodnotes-filesystem
  2017-08-21T13:23:20.899-0700 I CONTROL  [initandlisten] 
  2017-08-21T13:23:20.899-0700 I CONTROL  [initandlisten] ** WARNING: Access control is not enabled for the database.
  2017-08-21T13:23:20.899-0700 I CONTROL  [initandlisten] **          Read and write access to data and configuration is unrestricted.
  2017-08-21T13:23:20.899-0700 I CONTROL  [initandlisten] 
  2017-08-21T13:23:20.899-0700 I CONTROL  [initandlisten] 
  2017-08-21T13:23:20.899-0700 I CONTROL  [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'.
  2017-08-21T13:23:20.899-0700 I CONTROL  [initandlisten] **        We suggest setting it to 'never'
  2017-08-21T13:23:20.899-0700 I CONTROL  [initandlisten] 
  </code></pre>