查看 mongodb 状态 ​​sudo systemctl status mongod​​如下：

sudo mongod --repair --dbpath /var/lib/mongodb

chown -R mongodb:mongodb /var/lib/mongodb
chown mongodb:mongodb /tmp/mongodb-27017.sock

sudo systemctl restart mongod

ok

取自​​http://5.9.10.113/67051214/cant-start-mongodb-database-server-on-ubuntu20-04​​