https://www.runoob.com/mongodb/mongodb-linux-install.html

1、下载mongodb并解压缩

wget https://fastdl.mongodb.org/linux/mongodb-linux-x86_64-ubuntu1804-4.4.1.tgz

tar -zxvf mongodb-linux-x86_64-ubuntu1804-4.4.1.tgz

mv mongodb-linux-x86_64-ubuntu1804-4.4.1 mongodb

sudo mv mongodb /usr/local

2、设置环境变量

sudo gedit /etc/profile

export MONGODB_HOME=/usr/local/mongodb

export PATH=$MONGODB_HOME/bin:$PATH

source /etc/profile

3、创建目录及日志文件

mkdir -p /usr/local/mongodb/data

mkdir -p /usr/local/mongodb/log

touch /usr/local/mongodb/log/mongodb.log

sudo chown `whoami` /usr/local/mongodb/data   # 设置权限

sudo chown `whoami` /usr/local/mongodb/log    # 设置权限

4、安装依赖项

sudo apt-get install libcurl4 openssl liblzma5

5、修改配置文件，并按照配置文件启动

mongod --dbpath /usr/local/mongodb/data --logpath /usr/local/mongodb/log/mongodb.log –fork