官方安装：install-mongodb-on-ubuntu
这里采用基于 deb 的方式安装(以清华源)：
wget https://mirrors.tuna.tsinghua.edu.cn/mongodb/apt/ubuntu/dists/focal/mongodb-org/5.0/multiverse/binary-amd64/mongodb-cli_1.20.3_amd64.deb
wget https://mirrors.tuna.tsinghua.edu.cn/mongodb/apt/ubuntu/dists/focal/mongodb-org/5.0/multiverse/binary-amd64/mongodb-database-tools_100.5.0_amd64.deb
wget https://mirrors.tuna.tsinghua.edu.cn/mongodb/apt/ubuntu/dists/focal/mongodb-org/5.0/multiverse/binary-amd64/mongodb-mongosh_0.15.6_amd64.deb
wget https://mirrors.tuna.tsinghua.edu.cn/mongodb/apt/ubuntu/dists/focal/mongodb-org/5.0/multiverse/binary-amd64/mongodb-mongosh_1.1.0_amd64.deb
wget https://mirrors.tuna.tsinghua.edu.cn/mongodb/apt/ubuntu/dists/focal/mongodb-org/5.0/multiverse/binary-amd64/mongodb-org-database-tools-extra_5.0.3_amd64.deb
wget https://mirrors.tuna.tsinghua.edu.cn/mongodb/apt/ubuntu/dists/focal/mongodb-org/5.0/multiverse/binary-amd64/mongodb-org-database_5.0.3_amd64.deb
wget https://mirrors.tuna.tsinghua.edu.cn/mongodb/apt/ubuntu/dists/focal/mongodb-org/5.0/multiverse/binary-amd64/mongodb-org-mongos_5.0.3_amd64.deb
wget https://mirrors.tuna.tsinghua.edu.cn/mongodb/apt/ubuntu/dists/focal/mongodb-org/5.0/multiverse/binary-amd64/mongodb-org-server_5.0.3_amd64.deb
wget https://mirrors.tuna.tsinghua.edu.cn/mongodb/apt/ubuntu/dists/focal/mongodb-org/5.0/multiverse/binary-amd64/mongodb-org-shell_5.0.3_amd64.deb
wget https://mirrors.tuna.tsinghua.edu.cn/mongodb/apt/ubuntu/dists/focal/mongodb-org/5.0/multiverse/binary-amd64/mongodb-org-tools_5.0.3_amd64.deb
wget https://mirrors.tuna.tsinghua.edu.cn/mongodb/apt/ubuntu/dists/focal/mongodb-org/5.0/multiverse/binary-amd64/mongodb-org_5.0.3_amd64.deb安装：
sudo dpkg -i *.deb启动 Mongodb:
sudo systemctl start mongod
#sudo systemctl daemon-reload
sudo systemctl status mongod
sudo systemctl enable mongod
sudo systemctl stop mongod
sudo systemctl restart mongod
Mongodb 日志路径：/var/log/mongodb/mongod.log.
Mongodb 命令行工具：mongosh. (mongodb-shell)