安装MongoDB
# 官网下载，解压，放到：
/usr/local
#环境变量
vim ~/.bash_profile
#添加
PATH=/usr/local/mongodb/bin:${PATH}
export PATH
# 使生效
source vim ~/.bash_profile
mongod -version
db version v4.2.3
git version: 6874650b362138df74be53d366bbefc321ea32d4
allocator: system
modules: none
build environment:
distarch:
