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Introduction

Based on:

• https://training.linuxfoundation.org/certification/lfcs

Environment setup (Virtual Machine)

We've selected Ubuntu 14.04 as our preferred Linux distribution.

We use vagrant to create VM:

• Install vagrant (https://www.vagrantup.com/docs/installation/)
• vagrant box add ubuntu/trusty64 (this installs the image for Ubuntu 14.04)
• in a new directory:

vagrant init ubuntu/trusty64
vagrant up 
vagrant ssh

Project

Overall goal:

• Setup 3-tier WebApp architecture and optimize:
• Webserver: (NGINX)
• Application server (NodeJS)
• database (PostgreSQL)

...also, add data analysis (Jupyter).

Meta: collect, analysis, report on data generated by the system itself

System administration specific tasks

• optimize for China (packages from Chinese mirrors)
• security
• automate setup and installation
• test different workloads
• benchmark and tune operating system and each tier
• depending on simulated load and hardware profile, select:
• sysctl settings tweaks
• service configuration and optimization
• filesystem / configuration
• VPN setup
• services monitoring
• load monitoring (memory, disk, cpu)
• log monitoring
• networking configuration
• firewall configuration

Measurement/test

• transactions or queries per second

installation

 apt-get install nginx postgresql nodejs