When I somehow login and logout my linode vps where I start the service of mongodb for some times, then I got these errors: # service mongod startStarting mongod: Wed Oct 30 01:28:42.557Wed Oct 30 01:28:42.558 warning: 32-bit servers don't
When I somehow login and logout my linode vps where I start the service of mongodb for some times, then I got these errors:
# service mongod start
Starting mongod: Wed Oct 30 01:28:42.557
Wed Oct 30 01:28:42.558 warning: 32-bit servers don't have journaling enabled by default. Please use --journal if you want durability.
Wed Oct 30 01:28:42.558
about to fork child process, waiting until server is ready for connections.
forked process: 6873
all output going to: /var/log/mongo/mongod.log
ERROR: child process failed, exited with error number 100
[FAILED]
So, after googling, I find the reason:
Unclean shutdown detected.
Please visit http://dochub.mongodb.org/core/repair for recovery instructions.
How to resolve it?
First, kill the process if it exists
ps -ef | grep mongo*
ps -ef | grep mongod
kill -9 pid
Second, remove the lock file for mongodb
rm -rf /var/lib/mongo/mongod.lock
Third, boot it with repair mode
mongod -f /etc/mongod.conf --repair
Forth, boot again without repair mode
mongod -f /etc/mongod.conf
Now we can check if the mongodb process is running:
ps -ef | grep mongo*
ps -ef | grep mongod
And try it: mongo
Done!
原文地址：repair and boot mongodb on centos, 感谢原作者分享。
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