【发布时间】：2018-02-05 18:18:47
【问题描述】：
我有一个运行了数月的带有 MongoDB 服务器的 Google 云虚拟机。今天虚拟机重新启动，MongoDB 不会作为服务运行（我可以将它作为进程手动运行并正常启动）。
- 操作系统：CentOS 7
- MongoDB 版本：3.2.16
抛出的错误：
>sudo service mongod start
Starting mongod (via systemctl): Job for mongod.service failed because the control process exited with error code. See "systemctl status mongod.service" and "journalctl -xe" for details.
[FAILED]所以如果我运行“systemctl status mongod.service”：
>sudo systemctl status mongod.service
mongod.service - SYSV: Mongo is a scalable, document-oriented database.
Loaded: loaded (/etc/rc.d/init.d/mongod; bad; vendor preset: disabled)
Active: failed (Result: exit-code) since Mon 2018-02-05 18:05:49 UTC; 1min 20s ago
Docs: man:systemd-sysv-generator(8)
Process: 3755 ExecStart=/etc/rc.d/init.d/mongod start (code=exited, status=1/FAILURE)
Feb 05 18:05:49 todoturnos-testing systemd[1]: Starting SYSV: Mongo is a scalable, document-oriented database....
Feb 05 18:05:49 todoturnos-testing runuser[3762]: pam_unix(runuser:session): session opened for user mongod by (uid=0)
Feb 05 18:05:49 todoturnos-testing mongod[3755]: Starting mongod: [FAILED]
Feb 05 18:05:49 todoturnos-testing systemd[1]: mongod.service: control process exited, code=exited status=1
Feb 05 18:05:49 todoturnos-testing systemd[1]: Failed to start SYSV: Mongo is a scalable, document-oriented database..
Feb 05 18:05:49 todoturnos-testing systemd[1]: Unit mongod.service entered failed state.
Feb 05 18:05:49 todoturnos-testing systemd[1]: mongod.service failed.如果我运行“journalctl -xe”
>sudo journalctl -xe
Feb 05 18:09:58 todoturnos-testing sudo[3827]: janokpodelmundi : TTY=pts/0 ; PWD=/usr/lib/tmpfiles.d ; USER=root ; COMMAND=/sbin/service mongod start
Feb 05 18:09:58 todoturnos-testing polkitd[348]: Registered Authentication Agent for unix-process:3847:870363 (system bus name :1.242 [/usr/bin/pkttyagent --notify-fd 5 --fallback], object path /or
Feb 05 18:09:58 todoturnos-testing systemd[1]: Starting SYSV: Mongo is a scalable, document-oriented database....
-- Subject: Unit mongod.service has begun start-up
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- Unit mongod.service has begun starting up.
Feb 05 18:09:58 todoturnos-testing runuser[3860]: pam_unix(runuser:session): session opened for user mongod by (uid=0)
Feb 05 18:09:58 todoturnos-testing runuser[3860]: pam_unix(runuser:session): session closed for user mongod
Feb 05 18:09:58 todoturnos-testing mongod[3853]: Starting mongod: [FAILED]
Feb 05 18:09:58 todoturnos-testing systemd[1]: mongod.service: control process exited, code=exited status=1
Feb 05 18:09:58 todoturnos-testing systemd[1]: Failed to start SYSV: Mongo is a scalable, document-oriented database..
-- Subject: Unit mongod.service has failed
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- Unit mongod.service has failed.
--
-- The result is failed.
Feb 05 18:09:58 todoturnos-testing systemd[1]: Unit mongod.service entered failed state.
Feb 05 18:09:58 todoturnos-testing systemd[1]: mongod.service failed.
Feb 05 18:09:58 todoturnos-testing polkitd[348]: Unregistered Authentication Agent for unix-process:3847:870363 (system bus name :1.242, object path /org/freedesktop/PolicyKit1/AuthenticationAgent,
Feb 05 18:10:00 todoturnos-testing sudo[3866]: janokpodelmundi : TTY=pts/0 ; PWD=/usr/lib/tmpfiles.d ; USER=root ; COMMAND=/bin/journalctl -xe
lines 2280-2321/2321 (END)“janokpodelmundi”是我的用户名。
所以，我已禁用 SELINUX，因为我知道它可能与此问题有关，但没有解决。 我还更改了“pid”文件位置以确保权限正常，并且在配置中也禁用了分叉。
我的 mongodb 配置：
systemLog:
destination: file
logAppend: true
path: /var/log/mongodb/mongod.log
# Where and how to store data.
storage:
dbPath: /var/lib/mongo
journal:
enabled: true
# engine:
# mmapv1:
# wiredTiger:
# how the process runs
processManagement:
fork: true # fork d run in background
pidFilePath: /var/run/mongo/mongod.pid # location of pidfile
# network interfaces
net:
port: 27017
bindIp: 0.0.0.0 # Listen to local interface only, comment to listen on all interfaces.mongodb 日志为空，任何时候都不生成行。
我一直在尝试我在互联网上找到的许多替代方案，但问题仍然存在。
任何帮助都会很棒。
解决方案： 在尝试“mongod -f /path-to-config-file”并在第 29 行得到“不正确的 YAML”错误后，我从原始 mongo conf 粘贴了第 26-29 行：
# network interfaces
net:
port: 27017
bindIp: 0.0.0.0 #之后我再次尝试“mongod -f path-to-config-file”并成功。
【问题讨论】：
-
您是否尝试过在禁用分叉的情况下从命令行
mongod -f <path_to_conf>/conf_file_name.conf启动mongod -
应该是
systemLog:，你漏掉了一个s，或者这只是一个错字... -
我在这里粘贴了一个错字...配置文件的“systemLog”正确。我用配置文件尝试了 mongod -f，它抛出以下错误：解析 YAML 配置文件时出错：yaml-cpp：第 29 行错误，第 2 列：未找到地图结尾
-
@*.com/users/7174775/trdrake 您是否在 YAML 文件中使用空格而不是制表符？似乎您的 conf 文件中有一个有趣的字符或缩进。最简单的调试方法是从一个基本的 conf 文件开始并添加选项，并确保在添加另一个选项之前您的缩进等是正确的
-
也许用 YAML 错误更新你的 OP :-)