Syslog Configuration

Your log data must not contain any personal data, such as names, email addresses, etc. It is your responsibility to ensure this data is filtered out before being sent to AppSignal, and when identifying a person is necessary that your application uses alternative forms of identification such as a user ID, hash, or pseudonym.

Install TLS Package

To send logs to AppSignal via syslog, you'll need to have installed rsyslog's TLS (Transport Layer Security) package. You can check to see if the package is already installed on your server using the below command:

sudo apt list rsyslog-gnutls --installed

If the package is not installed, you can install it using the below command:

sudo apt install rsyslog-gnutls

Setup Syslog

AppSignal generates a Syslog code snippet for you, available on the source management page. To view this snippet, find the source you wish to configure from the Manage Sources overview and click "Manage source". You will be redirected to a page, that will look similar to the example below:

Screenshot of Source Management

On this page, you will be able to find the "Installation instructions" for your source. These instructions will include a code snippet you copy and use as your configuration file. You should save this file in the etc/rsyslog.d directory.

Once you've created and saved your configuration, you will need to restart rsyslog so that it begins sending logs to AppSignal, using the restart command from a terminal with root access:

/etc/rc.d/init.d/systemctl restart rsyslogd

If you are unsure about this step, you can always reach out for assistance. We'll help you to get those logs flowing!

Domain and Port Information

Our domain and port are as follows:


Structured messages

The message part of a syslog message can be formatted either in JSON, Logfmt or Plaintext.

Formatting the message in JSON or Logfmt allows you to add additional (structured) data attributes that can be used to find/filter messages on.

For more information about the specifics of message formatting, see our formatting documentation.