우분투 16.04 nginx 1.10 에서 1.16으로 업그레이드

situation

• on Ubuntu 16.04 xenial, apt install nginx whose version is 1.10.3

    # cannot find newer than 1.10.
    $ sudo apt-get install nginx=1.17.*
    Reading package lists... Done
    Building dependency tree       
    Reading state information... Done
    E: Version '1.17.*' for 'nginx' was not found
  
    $ sudo apt-get install nginx=1.10.*
    Reading package lists... Done
    Building dependency tree       
    Reading state information... Done
    ... 

• $sudo apt install nginx $nginx -v nginx version: nginx/1.10.3 (Ubuntu)
• to upgrade to the latest version, the following needs to be implemented (reference)
  • sudo apt-get install software-properties-common
  • sudo add-apt-repository ppa:nginx/stable
  • sudo apt-get update
  • sudo apt-get install nginx
• upgrade verification
• $ nginx -v nginx version: nginx/1.16.1