This is first private wiki pages. i aims to save my experience for future reference. most likely, i will save lots of practice experience on code/programming/cs. 

It is a good experience to setup this wiki. i do following and have this wiki now.

  - First, i have an Aliyun VM (actully, it runs my worldpress blog). then i install doku wiki to save my experience.
  - I install Dokuwiki following this page: https://www.dokuwiki.org/installer. it is very straightforward for me, i only need to download and extract it to my VM.
  -  Follow the instruction will get following error. it is actually a permission issue, following instruction here https://forum.dokuwiki.org/post/56689 will resolve it.
"DokuWiki Setup Error
The datadir ('pages') at ./data/pages is not found, isn't accessible or writable. You should check your config and permission settings. Or maybe you want to run the installer?"

I also evaluate mediawiki, it seems dokuwiki is more simple, so i choose dokuwiki.