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Powered by GitBook
On this page
  • Overview
  • Prerequisites
  • Setup Fluentd
  • Step 1. Install Fluentd (td-agent)
  • Step 2. Install the Fluent Plugin for MacOS Logs
  • Step 3. Edit Fluentd Configuration
  • Step 4. Point Fluentd to Configuration File and Validate
  • Step 5. Verify Logging
  • Panther Console
  • Step 1. Create a Custom Schema
  • Step 2. Onboard the S3 bucket

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  1. Data Sources & Transports
  2. Data Pipeline Tools
  3. Fluentd Onboarding Guide

MacOS System Logs to S3 via Fluentd

PreviousGeneral log forwarding via FluentdNextSyslog to S3 via Fluentd

Last updated 1 year ago

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Overview

Consider using instead of Fluentd to forward logs to Panther. Fluent Bit is easier to set up and less resource intensive than Fluentd.

This guide provides a method to deliver MacOS System Logs to S3 using Fluentd. There are two different pipeline flows: via an AWS Firehose delivery stream and directly to an AWS S3 bucket

Prerequisites

This guide assumes that an S3 bucket or Firehose has already been created. If you need to create either of these resources, please see the . If you have already provisioned the resources, you can adapt the guide below to fit your needs.

Setup Fluentd

Step 1. Install Fluentd (td-agent)

Follow the Fluentd installation for the machine from which you want to collect MacOS System Logs. This guide will specifically cover using td-agent as the service to collect logs.

Step 2. Install the Fluent Plugin for MacOS Logs

Use the command below to install the Fluentd MacOS plugin.

sudo /opt/td-agent/bin/fluent-gem install fluent-plugin-macos-log

Further documentation about this plugin can be found on .

Step 3. Edit Fluentd Configuration

The configuration information that is included by default can be removed if not in use. Use the Fluentd configuration below and add your aws_key_id, aws_sec_key, s3_bucket, and s3_region information.

Fluentd and td-agent will attempt to run services on conflicting ports. If this is a new installation you will need to change the ports in the configuration file or remove the default configuration from the file.

/etc/td-agent/td-agent.conf
<source>
  @type macoslog
  style ndjson
  tag macos
  pos_file last-starttime.log
  run_interval 10s
  <parse>
    @type json
    time_type string
    time_key timestamp
    time_format %Y-%m-%d %H:%M:%S.%L%z
  </parse>
</source>

<match **>
  @type s3
  aws_key_id <Key ID>
  aws_sec_key <Key>
  s3_bucket <Bucket>
  s3_region <Region>
  path macoslog/%Y/%m/%d/
  store_as gzip
  <buffer tag,time>
    @type file
    path /var/log/fluent/s3
    timekey 300 # 5 min partition to post to S3
    timekey_wait 2m
    timekey_use_utc true # use utc
    chunk_limit_size 256m
  </buffer>
  <format>
    @type json
  </format>
</match>

Step 4. Point Fluentd to Configuration File and Validate

# Point fluentd to configuration file
fluentd -c /etc/td-agent/td-agent.conf

# Validate configuration
/opt/td-agent/usr/sbin/td-agent --dry-run

Step 5. Verify Logging

After a few minutes have passed, verify that events are being logged to the S3 bucket. Logs should be showing up under the macos/ prefix within the bucket.

Panther Console

Step 1. Create a Custom Schema

Go to Configure > Schemas. Click +New Schema then enter the values below into the schema fields:

Name: Custom.MacOSSystemLogs Description: MacOS System Logs for Application, Security, System

version: 0
fields:
- name: pid
  type: bigint
- name: ppid
  type: bigint
- name: message
  type: string
- name: worker
  type: bigint
- name: creatorActivityID
  type: float
- name: messageType
  type: string
- name: activityIdentifier
  type: bigint
- name: backtrace
  type: object
  fields:
  - name: frames
    required: true
    type: array
    element:
      type: object
      fields:
      - name: imageOffset
        required: true
        type: bigint
      - name: imageUUID
        required: true
        type: string
- name: bootUUID
  type: string
- name: category
  type: string
- name: eventMessage
  type: string
- name: eventType
  type: string
- name: formatString
  type: string
- name: machTimestamp
  type: bigint
- name: parentActivityIdentifier
  type: bigint
- name: processID
  type: bigint
- name: processImagePath
  type: string
- name: processImageUUID
  type: string
- name: senderImagePath
  type: string
- name: senderImageUUID
  type: string
- name: senderProgramCounter
  type: bigint
- name: subsystem
  type: string
- name: threadID
  type: bigint
- name: timezoneName
  type: string
- name: traceID
  type: float

Step 2. Onboard the S3 bucket

Select the log type Custom.MacOSSystemLogs and prefix macos/ in the onboarding steps. After completing the bucket onboarding, data should now be flowing into Panther!

Follow the onboarding documentation and use the S3 Bucket used in the previous setup.

Fluent Bit
Fluentd Onboarding Guide
instructions
Github
S3 source