SlideShare a Scribd company logo
ELK
Eberhard Wolff - @ewolff
Docker
•  No true virtualization
•  Linux Containers (lxc)
•  i.e. shared kernel
•  i.e. separate file systems
Eberhard Wolff - @ewolff
Docker File Systems
•  Read only base images
•  +read/write image
•  Can be stacked
Eberhard Wolff - @ewolff
Docker
•  Linux only
•  So: Run it in VM
•  Controlled by Vagrant
Docker Demo
Eberhard Wolff - @ewolff
Communication Between
Docker Container
•  Via ports
•  Via data volumes
Docker is a
Component
System
Eberhard Wolff - @ewolff
Example
•  Log file analysis
•  ELK Stack
•  Elasticsearch: Store
•  Logstash: Parse
•  Kibana: Web based GUI
•  Install three servers
•  Automate installation ... L
Eberhard Wolff - @ewolff
Dockerized ELK Stack
•  1 Vagrantfile (25 lines)
•  6 Dockerfiles (total 28 lines)
•  1 HTML file (11 lines)
•  1 Config (Logstash) (29 lines)
•  Total: 93 lines, 9 files
•  Including one RegExp L
Eberhard Wolff - @ewolff
Vagrant VM
Container
user-registration
8080
8081
Port
8081
Container
elasticsearch
Container
logstash
9200
9200
Port
9200
9200
link
Container
kibana
Port
8080
8080
8080
Browser
Volume
/log
Demo ELK
Stack
Eberhard Wolff - @ewolff
date time level
1988-10-12 19:42:07.350 INFO 683 [http-nio-8080-exec-6] --- c.e.u.service.RegistrationService : email=eberhard.wolff@gmail.com geloesc
pid thread class logmessage
Eberhard Wolff - @ewolff
Scaling Elasticsearch
•  More servers
•  Shards
•  Easy to set up
•  Index per day or week or month
•  Smaller dataset
Eberhard Wolff - @ewolff
Ideas about Logstash
•  No parsing
•  Send JSON
Eberhard Wolff - @ewolff
Break Logstash apart
•  Logstash does parsing and
communication
•  Not too sensible in a distributed
sytem
•  Separate process per responsibility
Eberhard Wolff - @ewolff
Shipper
•  Ship data from logging system
•  Logstash
•  Beaver
https://github.com/josegonzalez/
beaver
•  Woodchuck
https://github.com/danryan/
woodchuck
Eberhard Wolff - @ewolff
Broker
•  Buffer data for later processing
•  Redis
•  In-Memory NoSQL database
•  Small
•  Fast
•  ...and then Parse (Logstash)
Eberhard Wolff - @ewolff
Links
•  https://github.com/ewolff/user-
registration
Eberhard Wolff - @ewolff
Thank You!!
eberhard.wolff@gmail.com
@ewolff

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ELK Stack

  • 1. ELK
  • 2. Eberhard Wolff - @ewolff Docker •  No true virtualization •  Linux Containers (lxc) •  i.e. shared kernel •  i.e. separate file systems
  • 3. Eberhard Wolff - @ewolff Docker File Systems •  Read only base images •  +read/write image •  Can be stacked
  • 4. Eberhard Wolff - @ewolff Docker •  Linux only •  So: Run it in VM •  Controlled by Vagrant
  • 6. Eberhard Wolff - @ewolff Communication Between Docker Container •  Via ports •  Via data volumes
  • 8. Eberhard Wolff - @ewolff Example •  Log file analysis •  ELK Stack •  Elasticsearch: Store •  Logstash: Parse •  Kibana: Web based GUI •  Install three servers •  Automate installation ... L
  • 9. Eberhard Wolff - @ewolff Dockerized ELK Stack •  1 Vagrantfile (25 lines) •  6 Dockerfiles (total 28 lines) •  1 HTML file (11 lines) •  1 Config (Logstash) (29 lines) •  Total: 93 lines, 9 files •  Including one RegExp L
  • 10. Eberhard Wolff - @ewolff Vagrant VM Container user-registration 8080 8081 Port 8081 Container elasticsearch Container logstash 9200 9200 Port 9200 9200 link Container kibana Port 8080 8080 8080 Browser Volume /log
  • 12. Eberhard Wolff - @ewolff date time level 1988-10-12 19:42:07.350 INFO 683 [http-nio-8080-exec-6] --- c.e.u.service.RegistrationService : email=eberhard.wolff@gmail.com geloesc pid thread class logmessage
  • 13. Eberhard Wolff - @ewolff Scaling Elasticsearch •  More servers •  Shards •  Easy to set up •  Index per day or week or month •  Smaller dataset
  • 14. Eberhard Wolff - @ewolff Ideas about Logstash •  No parsing •  Send JSON
  • 15. Eberhard Wolff - @ewolff Break Logstash apart •  Logstash does parsing and communication •  Not too sensible in a distributed sytem •  Separate process per responsibility
  • 16. Eberhard Wolff - @ewolff Shipper •  Ship data from logging system •  Logstash •  Beaver https://github.com/josegonzalez/ beaver •  Woodchuck https://github.com/danryan/ woodchuck
  • 17. Eberhard Wolff - @ewolff Broker •  Buffer data for later processing •  Redis •  In-Memory NoSQL database •  Small •  Fast •  ...and then Parse (Logstash)
  • 18. Eberhard Wolff - @ewolff Links •  https://github.com/ewolff/user- registration
  • 19. Eberhard Wolff - @ewolff Thank You!! eberhard.wolff@gmail.com @ewolff