Book Image

Mastering Python Networking - Fourth Edition

By : Eric Chou
Book Image

Mastering Python Networking - Fourth Edition

By: Eric Chou

Overview of this book

Networks in your infrastructure set the foundation for how your application can be deployed, maintained, and serviced. Python is the ideal language for network engineers to explore tools that were previously available to systems engineers and application developers. In Mastering Python Networking, Fourth edition, you'll embark on a Python-based journey to transition from a traditional network engineer to a network developer ready for the next generation of networks. This new edition is completely revised and updated to work with the latest Python features and DevOps frameworks. In addition to new chapters on introducing Docker containers and Python 3 Async IO for network engineers, each chapter is updated with the latest libraries with working examples to ensure compatibility and understanding of the concepts. Starting with a basic overview of Python, the book teaches you how it can interact with both legacy and API-enabled network devices. You will learn to leverage high-level Python packages and frameworks to perform network automation tasks, monitoring, management, and enhanced network security, followed by AWS and Azure cloud networking. You will use Git for code management, GitLab for continuous integration, and Python-based testing tools to verify your network.
Table of Contents (19 chapters)
17
Other Books You May Enjoy
18
Index

Data Ingestion with Logstash

In the last example, we used Logstash to ingest log data from network devices. Let's build on that example and add a few more configuration changes in network_config/config_2.cfg:

input {
  udp {
    port => 5144
    type => "syslog-core"
  }
  udp {
    port => 5145
    type => "syslog-edge"
  }
}
filter {
 if [type] == "syslog-edge" {
    grok {
      match => { "message" => ".*" }
      add_field => [ "received_at", "%{@timestamp}" ]
    }
  } 
}
output {
  stdout { codec => json }
  elasticsearch {
    hosts => ["https://192.168.2.126:9200"]
    <skip>
  }
}

In the input section, we will listen on two UDP ports, 5144 and 5145. When the logs are received, we will tag the log entries with either syslog-core or syslog-edge. We will also add a filter section to the configuration to specifically...