如何在node-mongodb-native中启用分析?

问题描述

我想通过node-mongodb-native驱动程序对我的MongoDB数据库之一启用概要分析.

I want to enable profiling on one of my MongoDB databases, via the node-mongodb-native driver.

但是，似乎没有Db.setProfilingLevel()方法(除了在管理数据库上).

However there doesn't seem to be a Db.setProfilingLevel() method (apart from on the Admin DB).

我尝试使用db.command({setProfilingLevel: 2})，但得到no such cmd: setProfilingLevel.

通过db.setProfilingLevel(2)

推荐答案

我明白了您对这些方法的含义，但是我认为db.command尝试的问题在于您试图将Shell Helper作为命令运行而不是命令本身.实际的命令是这样的格式:

I see what you mean about the methods, but I think the issue with the db.command attempt is that you are trying to run a shell helper as a command rather than the command itself. The actual command is this format:

// get current levels
db.runCommand({ profile : -1 })
// set the level to log slow ops
db.runCommand({ profile : 1 })
// set to log slow ops and change the threshold to 200ms
db.runCommand({ profile : 1, slowms : 200 })
//revert to defaults
db.runCommand({ profile : 0, slowms : 100 })

因此，如果您尝试将相关值传递到应该起作用的db.command中.

So, if you try passing the relevant value into db.command that should work.

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