explore.txt

https://github.com/poanetwork/blockscout#getting-started
https://forum.poa.network/c/blockscout
https://forum.poa.network/t/manual-blockscout-deployment/2458
#knowledge elixir
https://elixir-lang.org/getting-started/introduction.html
http://blog.jobbole.com/106663/
https://www.oschina.net/translate/a-week-with-elixir
https://elixirschool.com/zh-hans/lessons/advanced/erlang/
https://ruby-china.org/topics/37718
https://www.zhihu.com/question/58447086
#prepare
1. postgresql
yum install postgresql10-contrib
service postgresql-9.4 stop 

http://www.ruanyifeng.com/blog/2013/12/getting_started_with_postgresql.html
https://www.cnblogs.com/terrysun/archive/2012/11/30/2796479.html
https://help.ubuntu.com/stable/serverguide/postgresql.html
https://blog.csdn.net/XuHang666/article/details/81506297
https://www.postgresql.org/download/linux/redhat/
https://www3.ntu.edu.sg/home/ehchua/programming/sql/PostgreSQL_GetStarted.html

2. node
2.1
curl -sL https://rpm.nodesource.com/setup_10.x | bash -
2.2
can nopt install node-sass by default
npm install node-sass -- save --unsafe-perm=true