Book Image

Apache Mesos Cookbook

By : David Blomquist, Tomasz Janiszewski
Book Image

Apache Mesos Cookbook

By: David Blomquist, Tomasz Janiszewski

Overview of this book

Apache Mesos is open source cluster sharing and management software. Deploying and managing scalable applications in large-scale clustered environments can be difficult, but Apache Mesos makes it easier with efficient resource isolation and sharing across application frameworks. The goal of this book is to guide you through the practical implementation of the Mesos core along with a number of Mesos supported frameworks. You will begin by installing Mesos and then learn how to configure clusters and maintain them. You will also see how to deploy a cluster in a production environment with high availability using Zookeeper. Next, you will get to grips with using Mesos, Marathon, and Docker to build and deploy a PaaS. You will see how to schedule jobs with Chronos. We’ll demonstrate how to integrate Mesos with big data frameworks such as Spark, Hadoop, and Storm. Practical solutions backed with clear examples will also show you how to deploy elastic big data jobs. You will find out how to deploy a scalable continuous integration and delivery system on Mesos with Jenkins. Finally, you will configure and deploy a highly scalable distributed search engine with ElasticSearch. Throughout the course of this book, you will get to know tips and tricks along with best practices to follow when working with Mesos.
Table of Contents (15 chapters)
Title Page
About the Authors
About the Reviewer
Customer Feedback

Logging and debugging

In this recipe, we will configure logging options that will allow us to debug the state of Mesos.

Getting ready

We will assume Mesos is available on localhost port 5050. The steps provided here will work for either master or agents.

How to do it...

When Mesos is installed from pre-built packages, the logs are by default stored in /var/log/mesos/. When installing from a source build, storing logs is disabled by default. To change the log store location, we need to edit /etc/default/mesos and set the LOGS variable to the desired destination. For some reason, mesos-init-wrapper does not transfer the contents of /etc/mesos/log_dir to the --log_dir flag. That's why we need to set the log's destination in the environment variable.

Remember that only Mesos logs will be stored there. Logs from third-party applications (for example, ZooKeeper) will still be sent to STDERR.

Changing the default logging level can be done in one of two ways: by specifying the --logging_level flag or...