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Contents

2.3.2. Relay mode

Figure 2.3. Relay-mode operation

Relay-mode operation

In relay mode, syslog-ng receives logs through the network from syslog-ng clients and forwards them to the central syslog-ng server using a network connection. Relays also log the messages from the relay host into a local file, or forward these messages to the central syslog-ng server.

You cannot use the following destinations in relay mode: elasticsearch(), elasticsearch2(), hdfs(), kafka(), mongodb(), pipe(), smtp(), sql(). The file() and logstore() destinations work only for local messages that are generated on the relay.

No license file is required to run syslog-ng in relay mode.