# How to Add Tags to Fluentd Events
Here is how you can add tags to Fluentd events.
Let's assume you configured Fluentd to process Nginx access logs from the `access.log` file with a source configuration like this:
```text
[label /etc/fluent/fluentd.conf]
@type tail
path /var/log/nginx/access.log
pos_file /var/log/access.log.pos
format nginx
```
To organize and identify these logs effectively, you can assign a specific tag using the `tag` property in the configuration. Here's how you can set it:
```text
[label /etc/fluent/fluentd.conf]
@type tail
path /var/log/nginx/access.log
pos_file /var/log/access.log.pos
tag nginx.access
format nginx
```
In this example, the logs are tagged with `nginx.access`. This tag is crucial as it allows you to filter or match logs based on it in subsequent Fluentd configurations.
Now, with the tag defined, it can be referenced in a `match` or `filter` directive. Here's an example of using the `match` directive to forward all logs with the `nginx.access` tag to standard output:
```text
@type tail
path /var/log/nginx/access.log
pos_file /var/log/access.log.pos
tag nginx.access
format nginx
@type stdout
```
This setup ensures that all log events tagged as `nginx.access` are directed to the standard output, providing a streamlined way to manage and view these specific logs.
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