Fluentd

Setting up Fluentd is very straightforward:
1.Install Fluentd on your server according to the documentation.
2.Install and set up Fluentd input plugins to suit your needs (e.g., Syslog).
3.Install the Logtail plugin:
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td-agent-gem install fluent-plugin-logtail
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Depending on how you're using Fluentd, you might have to install the plugin gem using fluent-gem instead of td-agent-gem. Read more about Plugin Management in the Fluentd documentation.
4. Modify the Fluentd configuration to start sending the logs to your Logtail source. A basic configuration that forwards logs from all inputs to a single Logtail source could look like this:
/etc/td-agent/td-agent.conf
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<match *>
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  @type logtail
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  @id output_logtail
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  source_token YOUR_LOGTAIL_SOURCE_TOKEN
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  flush_interval 2 # in seconds
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</match>
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Make sure you replace YOUR_LOGTAIL_SOURCE_TOKEN with your own source token from Logtail.com.
5. Once you're happy with your configuration, restart the Fluentd service:
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sudo systemctl restart td-agent.service
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You should start seeing your logs in Logtail 🎉

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