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syslog-ng Premium Edition 7.0.30 - Administration Guide

Preface Introduction to syslog-ng The concepts of syslog-ng Installing syslog-ng PE The syslog-ng PE quick-start guide The syslog-ng PE configuration file Collecting log messages — sources and source drivers
How sources work default-network-drivers: Receive and parse common syslog messages internal: Collecting internal messages file: Collecting messages from text files google-pubsub: collecting messages from the Google Pub/Sub messaging service wildcard-file: Collecting messages from multiple text files linux-audit: Collecting messages from Linux audit logs mssql, oracle, sql: collecting messages from an SQL database network: Collecting messages using the RFC3164 protocol (network() driver) office365: Fetching logs from Office 365 osquery: Collect and parse osquery result logs pipe: Collecting messages from named pipes program: Receiving messages from external applications python: writing server-style Python sources python-fetcher: writing fetcher-style Python sources snmptrap: Read Net-SNMP traps syslog: Collecting messages using the IETF syslog protocol (syslog() driver) system: Collecting the system-specific log messages of a platform systemd-journal: Collecting messages from the systemd-journal system log storage systemd-syslog: Collecting systemd messages using a socket tcp, tcp6,udp, udp6: Collecting messages from remote hosts using the BSD syslog protocol udp-balancer: Receiving UDP messages at very high rate unix-stream, unix-dgram: Collecting messages from UNIX domain sockets windowsevent: Collecting Windows event logs
Sending and storing log messages — destinations and destination drivers
elasticsearch2>: Sending messages directly to Elasticsearch version 2.0 or higher (DEPRECATED) elasticsearch-http: Sending messages to Elasticsearch HTTP Event Collector file: Storing messages in plain-text files google_pubsub(): Sending logs to the Google Cloud Pub/Sub messaging service hdfs: Storing messages on the Hadoop Distributed File System (HDFS) http: Posting messages over HTTP kafka(): Publishing messages to Apache Kafka (Java implementation) (DEPRECATED) kafka-c(): Publishing messages to Apache Kafka using the librdkafka client (C implementation) logstore: Storing messages in encrypted files mongodb: Storing messages in a MongoDB database network: Sending messages to a remote log server using the RFC3164 protocol (network() driver) pipe: Sending messages to named pipes program: Sending messages to external applications python: writing custom Python destinations sentinel(): Sending logs to the Microsoft Azure Sentinel cloud snmp: Sending SNMP traps smtp: Generating SMTP messages (email) from logs splunk-hec: Sending messages to Splunk HTTP Event Collector sql(): Storing messages in an SQL database stackdriver: Sending logs to the Google Stackdriver cloud syslog: Sending messages to a remote logserver using the IETF-syslog protocol syslog-ng(): Forward logs to another syslog-ng node tcp, tcp6, udp, udp6: Sending messages to a remote log server using the legacy BSD-syslog protocol (tcp(), udp() drivers) unix-stream, unix-dgram: Sending messages to UNIX domain sockets usertty: Sending messages to a user terminal — usertty() destination Client-side failover
Routing messages: log paths, flags, and filters Global options of syslog-ng PE TLS-encrypted message transfer Advanced Log Transport Protocol Reliability and minimizing the loss of log messages Manipulating messages parser: Parse and segment structured messages Processing message content with a pattern database Correlating log messages Enriching log messages with external data Monitoring statistics and metrics of syslog-ng Multithreading and scaling in syslog-ng PE Troubleshooting syslog-ng Best practices and examples The syslog-ng manual pages Glossary

Element: urls

Location

/patterndb/ruleset/rules/rule/patterns/urls

Description

OPTIONAL — An element containing one or more URLs referring to further information about the patterns or the matching log messages.

Attributes

N/A

Children

  • url: OPTIONAL — An URL referring to further information about the patterns or the matching log messages.

Example

N/A

Element: values

Location

/patterndb/ruleset/rules/rule/patterns/values

Description

OPTIONAL — Name-value pairs that are assigned to messages matching the patterns, for example, the representation of the event in the message according to the Common Event Format (CEF) or Common Event Exchange (CEE). The names can be used as macros to reference the assigned values.

Attributes

N/A

Children

  • value: OPTIONAL — Contains the value of the name-value pair that is assigned to the message.

    The <value> element of name-value pairs can include template functions. For details, see Using template functions, for examples, see if.

    When used together with message correlation, the <value> element of name-value pairs can include references to the values of earlier messages from the same context. For details, see Correlating log messages using pattern databases.

  • name: The name of the name-value pair. It can also be used as a macro to reference the assigned value.

Example
<values>
    <value name=".classifier.outcome">/Success</value>
</values>

Element: examples

Location

/patterndb/ruleset/rules/rule/patterns/examples

Description

OPTIONAL — A container element for sample log messages that should be recognized by the pattern. These messages can be used also to test the patterns and the parsers.

Attributes

N/A

Children
Example
<examples>
    <example>
        <test_message>Accepted password for sampleuser from 10.50.0.247 port 42156 ssh2</test_message>
        <test_values>
            <test_value name="SSH.AUTH_METHOD">password</test_value>
            <test_value name="SSH_USERNAME">sampleuser</test_value>
            <test_value name="SSH_CLIENT_ADDRESS">10.50.0.247</test_value>
            <test_value name="SSH_PORT_NUMBER">42156</test_value>
        </test_values>
    </example>
</examples>

Element: example

Location

/patterndb/ruleset/rules/rule/patterns/examples/example

Description

OPTIONAL — A container element for a sample log message.

Attributes

N/A

Children

  • test_message: OPTIONAL — A sample log message that should match this pattern. For example:

    <test_message program="myapplication">Content filter has been enabled</test_message>

    • program: The program pattern of the test message. For example:

      <test_message program="proftpd">ubuntu (::ffff:192.168.2.179[::ffff:192.168.2.179]) - FTP session closed.</test_message>

  • test_values: OPTIONAL — A container element to test the results of the parsers used in the pattern.

    • test_value: OPTIONAL — The expected value of the parser when matching the pattern to the test message. For example:

      <test_value name=".dict.ContentFilter">enabled</test_value>

      • name: The name of the parser to test.

Example
<examples>
    <example>
        <test_message>Accepted password for sampleuser from 10.50.0.247 port 42156 ssh2</test_message>
        <test_values>
            <test_value name="SSH.AUTH_METHOD">password</test_value>
            <test_value name="SSH_USERNAME">sampleuser</test_value>
            <test_value name="SSH_CLIENT_ADDRESS">10.50.0.247</test_value>
            <test_value name="SSH_PORT_NUMBER">42156</test_value>
        </test_values>
    </example>
</examples>
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