Pencil OJ 02 安装

Mongo

官方的安装方法

官方教程已经很好啦，这里就不罗嗦了。

源码编译

待补。我是从这里看到的。

遇到的问题

启动时的警告信息

2015-03-06T21:01:15.526-0800 I CONTROL  [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'.
2015-03-06T21:01:15.526-0800 I CONTROL  [initandlisten] **        We suggest setting it to 'never'

解决方法：

stackoverflow上的回答

Official MongoDB documentation gives several solutions for this issue. You can also try this solution, which worked for me:

Open /etc/init/mongod.conf file.

Add the lines below immediately after chown $DEAMONUSER /var/run/mongodb.pid and before end script.

Restart mongod (service mongod restart).

Here are the lines to add to /etc/init/mongod.conf:

if test -f /sys/kernel/mm/transparent_hugepage/enabled; then

echo never > /sys/kernel/mm/transparent_hugepage/enabled

fi

if test -f /sys/kernel/mm/transparent_hugepage/defrag; then

echo never > /sys/kernel/mm/transparent_hugepage/defrag

fi

That's it!

shareimprove this answer

edited Apr 2 at 7:56

answered Mar 21 at 10:59

可惜我英语太渣，居然没有理解这句话（看漏了个单词before，然后就加在end script后面了）：Add the lines below immediately after chown $DEAMONUSER /var/run/mongodb.pid and before end script.

service mongod stop 不起作用

返回信息：

stop: Unknown instance

解决方法：

删除/var/lib/mongodb/mongod.lock，然后重启。

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