Automatically rotate the files in the MongoDB

[ajduke]

The log rotate does the work when done manually by running the command.

Does mongo have any thing as such which rotate file when certain log file limit is reached ?

[Andre de Frere]

Hi,

MongoDB does not currently automatically rotate logs.  You would need to do this as part of a cron job or similar.

There is an open SERVER ticket for you to comment and vote on at https://jira.mongodb.org/browse/SERVER-4797

Regards,

André

[Andre de Frere]

Hi,

I should also mention the ability to log to syslog, which is a new feature in 2.2.

You can find more information on this option in the following places:

http://docs.mongodb.org/manual/reference/mongod/#cmdoption-mongod--syslog

http://docs.mongodb.org/manual/release-notes/2.2/#support-for-logging-to-syslog

Regards,

André

[ajduke]

Thanks Andre for reply.

When this feature will be included, any idea on this ?

[Andre de Frere]

Hi,

This feature is currently planned but not scheduled.  I encourage you to vote and comment on the Jira ticket if this feature would be useful to you, so that we can more accurately prioritise any work to be done.

Cheers,

André

[ajduke]

Okay, sounds great.

Thanks André.

[HYG_cn]

Hi Andre:

        That's really a feature needs to be done,the log is very big and we can not make it quiet because we may analyze the log to see if something goes wrong.Now we use "killall -SIGUSR1 mongod" to rotate the log,is that right?Is there some potential harm to the mongod？

HYG 

[HYG_cn]

Hi Andre:

        That's really a feature needs to be done,the log is very big and we can not make it quiet because we may analyze the log to see if something goes wrong.Now we use "killall -SIGUSR1 mongod" to rotate the log,is that right?Is there some potential harm to the mongod？

HYG 

On Monday, November 26, 2012 8:08:19 AM UTC+8, Andre de Frere wrote:

[Stephen Steneker]

 

        That's really a feature needs to be done,the log is very big and we can not make it quiet because we may analyze the log to see if something goes wrong.Now we use "killall -SIGUSR1 mongod" to rotate the log,is that right?Is there some potential harm to the mongod？

Hi,

As noted on the Logging page, SIGUSR1 on Linux can be used for log rotation:

  http://www.mongodb.org/display/DOCS/Logging#Logging-Rotatingthelogfiles

This won't cause any "harm" to the mongod, however as also noted on the logging page there is a potential bug to be aware of:

  https://jira.mongodb.org/browse/SERVER-4739

The current recommendation to avoid SERVER-4739 is to instead use the logRotate command from the mongo shell.

It's also worth noting that the --syslog option added in MongoDB 2.2 will let you use standard syslog features like filtering & log rotation.  With syslog filtering you can generally use regular expressions to separate messages of interest into different log files (or suppress those that are just noise).

For example, Rsyslog is the current default for Ubuntu Server 10.04+:

 http://www.rsyslog.com/doc/rsyslog_conf_filter.html

 http://www.rsyslog.com/doc/log_rotation_fix_size.html

Cheers,

Stephen

[Orizon H]

Hi Stephen:

         Thanks for your answer.

Cheers,

HYG

2012/11/26 Stephen Steneker <stephen....@10gen.com>

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