LOGGEN(1) The loggen manual page LOGGEN(1) NAME loggen - Generate syslog messages at a specified rate SYNOPSIS loggen [options]target [port] DESCRIPTION NOTE: The loggen application is distributed with the syslog-ng system logging application, and is usually part of the syslog-ng package. The latest version of the syslog-ng application is available at the official syslog-ng website[1]. This manual page is only an abstract, for the complete documentation of syslog-ng, see The syslog-ng Administrator Guide[2]. The loggen application is tool to test and stress-test your syslog server and the connection to the server. It can send syslog messages to the server at a specified rate, using a number of connection types and protocols, including TCP, UDP, and unix domain sockets. The messages can be generated automatically (repeating the PADDstring over and over), or read from a file or the standard input. When loggen finishes sending the messages, it displays the following statistics: o average rate: Average rate the messages were sent in messages/second. o count: The total number of messages sent. o time: The time required to send the messages in seconds. o average message size: The average size of the sent messages in bytes. o bandwidth: The average bandwidth used for sending the messages in kilobytes/second. OPTIONS --active-connections Number of connections loggen will use to send messages to the destination. This option is usable only when using TCP or TLS connections to the destination. Default value: 1 The loggen utility waits until every connection is established before starting to send messages. See also the --idle-connections option. --csv or -C Send the statistics of the sent messages to stdout as CSV. This can be used for plotting the message rate. --dgram or -D Use datagram socket (UDP or unix-dgram) to send the messages to the target. Requires the --inet option as well. --dont-parse or -d Do not parse the lines read from the input files, send them as received. --help or -h Display a brief help message. --idle-connections Number of idle connections loggen will establish to the destination. Note that loggen will not send any messages on idle connections, but the connection is kept open using keep-alive messages. This option is usable only when using TCP or TLS connections to the destination. See also the --active-connections option. Default value: 0 --inet or -i Use the TCP (by default) or UDP (when used together with the --dgram option) protocol to send the messages to the target. --interval or -I The number of seconds loggen will run. Default value: 10 Note Note that when the --interval and --number are used together, loggen will send messages until the period set in --interval expires or the amount of messages set in --number is reached, whichever happens first. --ipv6 or -6 Specify the destination using its IPv6 address. Note that the destination must have a real IPv6 address. --loop-reading or -l Read the file specified in --read-file option in loop: loggen will start reading from the beginning of the file when it reaches the end of the file. --number or -n Number of messages to generate. Note Note that when the --interval and --number are used together, loggen will send messages until the period set in --interval expires or the amount of messages set in --number is reached, whichever happens first. --no-framing or -F Do not use the framing of the IETF-syslog protocol style, even if the syslog-proto option is set. --quiet or -Q Output statistics only when the execution of loggen is finished. If not set, the statistics are displayed every second. --permanent or -T Keep sending logs indefinitely, without time limit. --rate or -r The number of messages generated per second for every active connection. Default value: 1000 --read-file or -R Read the messages from a file and send them to the target. See also the --skip-tokens option. Specify - as the input file to read messages from the standard input (stdio). Note that when reading messages from the standard input, loggen can only use a single thread. The -R - parameters must be placed at end of command, like: loggen 127.0.0.1 1061 --read-file - --sdata or -p Send the argument of the --sdata option as the SDATA part of IETF-syslog (RFC5424 formatted) messages. Use it together with the --syslog-proto option. For example: --sdata "[test name=\"value\"] --size or -s The size of a syslog message in bytes. Default value: 256. Minimum value: 127 bytes, maximum value: 8192 bytes. --skip-tokens Skips the specified number of space-separated tokens (words) at the beginning of every line. For example, if the messages in the file look like foo bar message, --skip-tokens 2 skips the foo bar part of the line, and sends only the message part. Works only when used together with the --read-file parameter. Default value: 0 --stream or -S Use a stream socket (TCP or unix-stream) to send the messages to the target. --syslog-proto or -P Use the new IETF-syslog message format as specified in RFC5424. By default, loggen uses the legacy BSD-syslog message format (as described in RFC3164). See also the --no-framing option. --unix or -x Use a UNIX domain socket to send the messages to the target. --use-ssl or -U Use an SSL-encrypted channel to send the messages to the target. Note that it is not possible to check the certificate of the target, or to perform mutual authentication. --version or -V Display version number of syslog-ng. EXAMPLES The following command generates 100 messages per second for ten minutes, and sends them to port 2010 of the localhost via TCP. Each message is 300 bytes long. loggen --stream --size 300 --rate 100 --interval 600 127.0.0.1 2010 The following command is similar to the one above, but uses the UDP protocol. loggen --inet --dgram --size 300 --rate 100 --interval 600 127.0.0.1 2010 Send a single message on TCP6 to the ::1 IPv6 address, port 1061: loggen --ipv6 --number 1 ::1 1061 Send a single message on UDP6 to the ::1 IPv6 address, port 1061: loggen --ipv6 --dgram --number 1 ::1 1061 Send a single message using a unix domain-socket: loggen --unix --stream --number 1 Read messages from the standard input (stdio) and send them to the localhost: loggen 127.0.0.1 1061 --read-file - FILES /usr/local/bin/loggen SEE ALSO syslog-ng.conf(5) Note For the detailed documentation of see The 4.6 Administrator Guide[2] If you experience any problems or need help with syslog-ng, visit the syslog-ng mailing list[3]. For news and notifications about of syslog-ng, visit the syslog-ng blogs[4]. AUTHOR This manual page was written by the Balabit Documentation Team . COPYRIGHT NOTES 1. the official syslog-ng website https://www.balabit.com/log-management 2. The syslog-ng Administrator Guide https://www.syslog-ng.com/technical-documents/doc/syslog-ng-open- source-edition/3.37/administration-guide 3. syslog-ng mailing list https://lists.balabit.hu/mailman/listinfo/syslog-ng 4. syslog-ng blogs https://syslog-ng.org/blogs/ 4.6 01/25/2024 LOGGEN(1)