lm-logs-fluentd (beta)

This output plugin sends Fluentd records to the configured LogicMonitor account.

Prerequisites

Install the plugin:

• With gem: gem install fluent-plugin-lm-logs
• For deb packages: td-agent-gem install fluent-plugin-lm-logs

Alternatively, you can add out_lm.rb to your Fluentd plugins directory.

Configure the output plugin

Create a custom fluent.conf or edit the existing one to specify which logs should be forwarded to LogicMonitor.

# Match events tagged with "lm.**" and
# send them to LogicMonitor
<match lm.**>
    @type lm
    company_name <account_name>
    resource_mapping {"<event_key>": "<lm_property>"}
    access_id <your_lm_access_id>
    access_key <your_lm_access_key>
      <buffer>
        @type memory
        flush_interval 1s
        chunk_limit_size 5m
      </buffer> 
    debug false
</match>

Request example

Sending:

curl -X POST -d 'json={"message":"hello LogicMonitor from fluentd", "event_key":"lm_property_value"}' http://localhost:8888/lm.test

Returns the event:

{
    "message": "hello LogicMonitor from fluentd"
}

Note: Make sure that logs have a message field. Requests sent without a message will not be accepted.

Kubernetes

Logic Monitor collects k8s logs automatically via FluentD daemonset, It requires a plugin for this. We recommend using fluent-plugin-kubernetes_metadata_filter to collect Kubernetes metadata.

See the example to forward k8s logs to Logic Monitor.

Resource mapping examples

• {"message":"Hey!!", "event_key":"lm_property_value"} with mapping {"event_key": "lm_property"}
• {"message":"Hey!!", "a":{"b":{"c":"lm_property_value"}} } with mapping {"a.b.c": "lm_property"}
• {"message":"Hey!!", "_lm.resourceId": { "lm_property_name" : "lm_property_value" } } this will override resource mapping.

LogicMonitor properties

Property	Description
company_name	LogicMonitor account name.
resource_mapping	The mapping that defines the source of the log event to the LM resource. In this case, the <event_key> in the incoming event is mapped to the value of <lm_property>.
access_id	LM API Token access ID.
access_key	LM API Token access key.
flush_interval	Defines the time in seconds to wait before sending batches of logs to LogicMonitor. Default is 60s.
debug	When true, logs more information to the fluentd console.