Install

Jenkins install

# war
deps：git/maven
java -jar jenkins.war

MongoDB install

# install mongodb-linux-x86—64-amazon-3.6.5
nyk.conf => auth=true

start: ./bin/mongod -f nyk.conf

# mongo shell
./bin/mongo 127.0.0.1:3170

MySQL install

## mysql 8 支

```
# create user
>create user 'root'@'%' identified by 'PASSWORD';

# alter user
>alter user 'root'@'%' identified with mysql_native_password by 'PASSWORD';

# drop user 
>drop user 'root'@'%';

# add privileges
>grant all privileges on *.* 'root'@'%' with grant option;

# flush
>flush privileges;
```
##
https://dev.mysql.com/doc/refman/8.0/en/binary-installation.html
https://dev.mysql.com/doc/refman/8.0/en/drop-user.html

https://blog.csdn.net/vkingnew/article/details/81267223
https://blog.csdn.net/seventopalsy/article/details/80195246