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Jerry Chin
Jerry Chin

Reputation: 667

How to change log level for MongoDB logs?

Is there any way to change the default log level for MongoDB ?

There're too many insertion/update entries in the log file, causing it grow way too big.

command used to start mongo:

./bin/mongod --fork --bind_ip 0.0.0.0 --dbpath /data/db/ --logpath /data/log/mongodb/mongod.log --logappend --quiet --logRotate reopen

the log file is filled with:

2018-08-31T11:30:46.831+0800 I COMMAND  [conn564] command eques.$cmd command: insert

I just need error or more severe level entries.

Upvotes: 6

Views: 20133

Answers (2)

Elshan
Elshan

Reputation: 7693

Check the verbosity levels first

db.getLogComponents()

Note : All components not specified explicitly in the configuration have a verbosity level of -1, indicating that they inherit the verbosity level of their parent, if they have one, or the global verbosity level (systemLog.verbosity) if they do not.

Use the db.setLogLevel(<level>, <component>) method to update a single component log level.

For a component, you can specify verbosity level of 0 to 5, or you can specify -1 to inherit the verbosity of the parent.

For example, the following sets the systemLog.component.query.verbosity to its parent verbosity (i.e. default verbosity):

db.setLogLevel(-1, "query")

More info : https://docs.mongodb.com/manual/reference/method/db.setLogLevel/

Upvotes: 4

Vaibhav Magon
Vaibhav Magon

Reputation: 1503

The verbosity can be set to 0 overall and every individual component inherits the parent verbosity setting (of 0). That is as low as the verbosity setting goes. To further reduce the logging you can set systemLog.quiet but that is not recommended for production systems because it can make tracking down issues too difficult and it may not address the root cause in any case.

More - https://docs.mongodb.com/manual/reference/configuration-options/

Hope this helps!

Upvotes: 1

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