The Fluent::Logger
library is used to post records from Perl applications to Fluentd.
This article explains how to use it.
Basic knowledge of Perl
Basic knowledge of Fluentd
Perl 5.10 or higher
Please refer to the following documents to install fluentd:
Configure Fluentd to use the forward
input plugin as its data source:
<source>@type forwardport 24224</source><match fluentd.test.**>@type stdout</match>
Restart agent after configuring.
# for rpm/deb only$ sudo /etc/init.d/td-agent restart​# or systemd$ sudo systemctl restart td-agent.service
Install Fluent::Logger
library via CPAN:
$ cpancpan[1]> install Fluent::Logger
Create a script to post the records:
# test.pluse Fluent::Logger;my $logger = Fluent::Logger->new(host => '127.0.0.1',port => 24224,tag_prefix => 'fluentd.test',);$logger->post("follow", { "entry1" => "value1", "entry2" => 2 });
Executing the script will send the logs to Fluentd:
$ perl test.pl
The logs should be output to /var/log/td-agent/td-agent.log
or the standard output of the Fluentd process via stdout
output plugin.
Various output plugins are available for writing records to other destinations:
Examples
List of Plugin References
​Output to MongoDB or MongoDB ReplicaSet​
​Output to Hadoop​
​Output to File​
​etc...​
For high-traffic websites (more than 5 application nodes), we recommend using the high-availability configuration for td-agent
. This will improve the reliability of data transfer and query performance.
Monitoring Fluentd itself is also important. The article below describes the general monitoring methods for td-agent
.
​Monitoring Fluentd​
If this article is incorrect or outdated, or omits critical information, please let us know. Fluentd is an open-source project under Cloud Native Computing Foundation (CNCF). All components are available under the Apache 2 License.