我有Ubuntu 16.04。并在官方mongo网站上按照教程重新安装mongobd- https : //docs.mongodb.com/manual/tutorial/install-mongodb-on-ubuntu/结果我得到了：mongo -version
MongoDB shell version v4.0.5
git version: 3739429dd92b92d1b0ab120911a23d50bf03c412
OpenSSL version: OpenSSL 1.0.2g 1 Mar 2016
allocator: tcmalloc
modules: none
build environment:
distmod: ubuntu1604
distarch: x86_64
target_arch: x86_64
但是我无法启动mongodb（（
sudo systemctl status mongodb
● mongodb.service - High-performance, schema-free document-oriented database
Loaded: loaded (/etc/systemd/system/mongodb.service; disabled; vendor preset: enabled)
Active: failed (Result: exit-code) since Tue 2019-01-22 16:27:13 UTC; 10s ago
Process: 29736 ExecStart=/usr/bin/mongod --quiet --config /etc/mongod.conf (code=exited, status=1/FAILURE)
Main PID: 29736 (code=exited, status=1/FAILURE)
Jan 22 16:27:13 mahumachinen systemd[1]: Started High-performance, schema-free document-oriented database.
Jan 22 16:27:13 mahumachinen systemd[1]: mongodb.service: Main process exited, code=exited, status=1/FAILURE
Jan 22 16:27:13 mahumachinen systemd[1]: mongodb.service: Unit entered failed state.
Jan 22 16:27:13 mahumachinen systemd[1]: mongodb.service: Failed with result 'exit-code'.
请帮忙！
我可以通过在文件夹上设置错误的所有权来重现您的问题/var/log/mongodb：
root@demo:~# ls -lh /var/log/mongodb/
total 512
-rw-r--r-- 1 root root 0 Jan 22 17:57 mongod.log
root@demo:~# systemctl restart mongod
root@demo:~# systemctl status mongod
● mongod.service - MongoDB Database Server
Loaded: loaded (/lib/systemd/system/mongod.service; disabled; vendor preset: enabled)
Active: failed (Result: exit-code) since Tue 2019-01-22 17:57:13 UTC; 2s ago
Docs: https://docs.mongodb.org/manual
Process: 795 ExecStart=/usr/bin/mongod --config /etc/mongod.conf (code=exited, status=1/FAILURE)
Main PID: 795 (code=exited, status=1/FAILURE)
Jan 22 17:57:13 demo systemd[1]: Started MongoDB Database Server.
Jan 22 17:57:13 demo systemd[1]: mongod.service: Main process exited, code=exited, status=1/FAILURE
Jan 22 17:57:13 demo systemd[1]: mongod.service: Unit entered failed state.
Jan 22 17:57:13 demo systemd[1]: mongod.service: Failed with result 'exit-code'.
尝试更正MongoDB日志和数据目录的所有权：
root@demo:~# chown -Rc mongodb. /var/log/mongodb
changed ownership of '/var/log/mongodb/mongod.log' from root:root to mongodb:nogroup
changed ownership of '/var/log/mongodb' from root:root to mongodb:nogroup
root@demo:~# chown -Rc mongodb. /var/lib/mongodb
root@demo:~# systemctl restart mongod
root@demo:~# systemctl status mongod
● mongod.service - MongoDB Database Server
Loaded: loaded (/lib/systemd/system/mongod.service; disabled; vendor preset: enabled)
Active: active (running) since Tue 2019-01-22 17:58:30 UTC; 1s ago
Docs: https://docs.mongodb.org/manual
Main PID: 802 (mongod)
CGroup: /system.slice/mongod.service
└─802 /usr/bin/mongod --config /etc/mongod.conf
Jan 22 17:58:30 demo systemd[1]: Started MongoDB Database Server.
如果这不起作用，请尝试重新安装MongoDB，删除所有现有数据：
sudo apt purge mongodb-org mongodb-org-mongos mongodb-org-server mongodb-org-shell mongodb-org-tools
sudo rm -rfv /etc/mongod.conf /var/log/mongodb /var/lib/mongodb
sudo find /tmp -type s -iname '*mongodb*' -delete
sudo apt install mongodb-org
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我来说两句