CODEWITHSUNDEEP
nlog
Mister Epic
Mister Epic

Reputation: 16723

Changing nLog logging level in Production

What's the best practice for changing the logging level for nLog in a production environment. The only way I can change it is to modify the NLog.config file, and then recycle the app pool. Is that how it should be done?

Thanks,

Chris

Upvotes: 3

Views: 2097

Answers (2)

Rolf Kristensen
Rolf Kristensen

Reputation: 19867

NLog 4.6.7 allows you to change NLog LogLevel dynamically with minimum effort:

<nlog>
   <variable name="myLevel" value="Warn" />
    <rules>
      <logger minLevel="${var:myLevel}" writeTo="file" />
    </rules>
</nlog>

Then you can have a Debug-button that changes the myLevel-variable (and maybe setup a Timer that restores the default value):

LogManager.Configuration.Variables["myLevel"] = "Debug";
LogManager.ReconfigExistingLoggers(); // Explicit refresh of Layouts and updates active Logger-objects

See also: https://github.com/NLog/NLog/wiki/Filtering-log-messages#semi-dynamic-routing-rules

See also: https://github.com/NLog/NLog/wiki/Environment-specific-NLog-Logging-Configuration

Upvotes: 0

oakio
oakio

Reputation: 1898

If you want to change logging configuration, without restarting application, you should set autoReload="true".

NLog.config file:

<nlog autoReload="true">
   ...
</nlog>

More: https://github.com/nlog/NLog/wiki/Configuration-file#wiki-automatic-reconfiguration

Upvotes: 10

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