Log File Name Pattern

[r-anwar]

Support Request

Is it possible to add the Servers Hostname to the filename? Like $HOSTNAME_blitz-2025-01-27.log

We would provide the hostname through the .env file.

Plugin Version

4.23.7

[bencroker]

Not currently, and I don’t think Craft allows this either. You can create your own logger to catch specific logs and format them however you like using Monolog. I have an article that should help you get started:
https://putyourlightson.com/articles/adding-logging-to-craft-plugins-with-monolog

[r-anwar]

Hi Ben, I got following answer from craft support:

I just had a quick test and I was able to rename the web log for Craft via the config/app.php file:
$currentHost = $_SERVER['HTTP_HOST'] ?? 'localhost';

return [
'components' => [
'log' => [
'monologTargetConfig' => [
'name' => $currentHost .'-web',
],
],
],
];
As far as I know, queue and console are no domain specific so those would be tricky.
For Blitz, again, I'm not sure how loggin is done there, but It might be as straightforward as adding a config/app.blitz.php file with similar code to above.
I hope that helps!

We require the hostname in the log file name because our setup consists of multiple nodes that share a storage folder. This storage folder is an NFS mount that is used by all nodes

[bencroker]

It’s not possible to modify the Blitz log target via config, but you can add your own using a custom plugin/module.

if (Craft::getLogger()->dispatcher instanceof Dispatcher) {
    Craft::getLogger()->dispatcher->targets[] = new MonologTarget([
        'name' => ($_SERVER['HTTP_HOST'] ?? 'localhost') . '-blitz',
        'categories' => ['blitz'],
        'level' => LogLevel::INFO,
        'logContext' => false,
        'allowLineBreaks' => false,
        'formatter' => new LineFormatter(
            format: "[%datetime%] %message%\n",
            dateFormat: 'Y-m-d H:i:s',
        ),
    ]);
}

This is basically a copy of the registerLogTarget method.
https://github.com/putyourlightson/craft-blitz/blob/18893251941da7d75db573560caa6c9af2d028fb/src/Blitz.php#L291C22-L306

Let me know if this helps.

[r-anwar]

Would that replace the default blitz log file?

[bencroker]

No, that would add a new logger. You could remove the existing Blitz logger using something like this.

if (Craft::getLogger()->dispatcher instanceof Dispatcher) {
    foreach (Craft::getLogger()->dispatcher->targets as $key => $target) {
        if ($target instanceof MonologTarget && $target->getName() === 'blitz') {
            unset(Craft::getLogger()->dispatcher->targets[$key]);
        }
    }

    // Add a custom Blitz logger
}

[r-anwar]

Hi Ben, is there an event I can hook on to unset the blitz logger? Because my module's code is executed before Blitz is initialized, or rather, the existing logger targets are web, console, & queue at the runtime of my module, so at the time there is no blitz logger present.

[bencroker]

Wrapping your code in this should work.

Craft::$app->onInit(function() {

});