These aren't the logs...Kibana - authentication Elastic Shield - provides security for entire...

These aren't the logs you're looking for

Alicja Kwasniewska, Intel Eric Lemoine, MirantisMichal Jastrzebski, Intel

Alicja Kwasniewska Eric Lemoine Michal Jastrzebski

Agenda

KollaLogging

in dockers

Hacking Rsyslog

Central logging service

Elk or Ehk? Demo

KollaDocker containers Ansible playbooks

Kolla

● Production-ready Docker containers and deployment tools foroperating OpenStack clouds

● Both out of the box configuration and possibility for complete customization

● Images built in the kollaglue namespace for every tagged release, but you can also build images on your own

Docker containers

Deployment tools

Out of the boxconfiguration

Kollaglue

Customization

Logging in

docker containers

Docker logs● What? Anything that is written out to the container’s standard output/error● Logging capabilities available in the Docker are exposed as drivers

Default

● How to get path to this file? docker inspect -f "{{.LogPath}}" containerName● The docker logs command retrieves logs present at the time of execution.

NOTE: available only for containers with json-file and journald logging drivers

json syslog journald gelf fluentd

Hacking

rsyslog

Previous solution based on rsyslog

● Hacky● Shared /dev/log● Not meant for containers● New versions of docker breaks● Syslog doesn’t work well with tracebacks● Removed in both Liberty and Mitaka

Central logging serviceadvantages

“One Ring to rule them all, One Ring to find them...”

Which node? Which

container? Where should

I look first?

No need to search many places !

→ data stored in one location and accessed from single interface

One more second and I will find the right place in one of the

10000+ lines...

“Developer looking at production logs after a regression with downtime” oil canvas, circa 1580; source: http://classicprogrammerpaintings.tumblr.com

No need to search for one line in million !

→ interface provides filtering options and visual representation of data using graphs and charts

Kolla Central logging serviceNew feature in Mitaka

How it works?

Heka Feed data Elasticsearch View Kibana/var/lib/kolla/...

Search

Interact

HekaFeed data

/var/lib/kolla/...

Heka Feed data

/var/lib/kolla/...

HekaUnified data processing

Introduction to HekaStream processing software

● Open source● Developed by Mozilla● Used in production (by Mozilla)● Written in Go● http://hekad.readthedocs.org

Why Heka?

→“Unified Data Processing”

One tool for all the data:

● Ops data/metrics● Business data● Logging output● Error

reports/tracebacks

Ops data/ metrics

Business data

Logging output

Error reports/ tracebacks

Heka PipelinePlugins at each stage of the pipeline

Heka Highlights

● Lightweight● Flexible● Configurable● Easily and safely extendable

Lightweight Flexible

Configurable Easily and safely

extendable

ELK or EHK?

Logstash vs HekaWhy did we choose Heka over Logstash?

● Avoid running a JVM on each node● Heka is faster and more lightweight*● Heka is very flexible (plugins defined w/ code)

* https://github.com/elemoine/heka-logstash-comparison

→ EHK

ElasticsearchOpen-source text search and analytics engine

Introduction to Elasticsearch

● Open source product from Elastic group - https://github.com/elastic/elasticsearch

● Highly-scalable full-text search and analytics engine● Used by applications with complex search requirements● Written in Java

Elasticsearch Highlights

HighlyScalable

HighlyAvailable

RESTfulAPI

Full-TextSearch

Document-oriented

KibanaOpen-source analytics and visualization platform

Introduction to Kibana

● Open source product from Elastic group - https://github.com/elastic/kibana

● Written mainly in JavaScript, comes with Node.js server app ● Server component has a built-in proxy to Elasticsearch (designed to

work with Elasticsearch)

Kibana concepts

● Allows to search, view, and interact with data stored in Elasticsearch indices● Possibility to analyse and visualize data in a variety of charts, tables, and

maps

Search

Interact

View

Visualize

Analyse

Kibana - authentication

Elastic Shield - provides security for entire stack, including Kibana plugin for session support and login screen, but requires a license…

Nginx - use it as proxy with simple auth mechanism for Kibana

HAProxy - add HTTP Basic authentication with ACL that uses the http_auth criterion and http-request auth rule

ShieldFrom Elastic

GroupNginx HAProxy

HTTP Basic authentication with ACL

Deploy

EHK with Kolla

3 easy steps

Build images with one

command

Adapt configuration

files and enable central logging

Deploy Kolla with one

command

For details please watch webinar presented by Steven Dake - link provided at the last slide

Demo →

Thank you for your attentionAlicja Kwasniewska alicja.kwasniewska@intel.com

Eric Lemoine elemoine@mirantis.com Michal Jastrzebski michal.jastrzebski@intel.com

Irc: #openstack-kolla Webinar: https://vimeopro.com/midokura/345kl392