Logging logs with Logstash - Devops MK 10-02-2016

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Steve Howe

Small presentation describing a typical Logstash environment, why and what is Logstash.

Software

Logging logs with Logstash
Steve Howe – RetailMeNot UK Ltd.
showe@rmn.com

About me..
Devops engineer at RetailMeNot
Obsessed with making things better
Husband, father, frequently busy

Why Logstash?
Jordan Sissel
Noticed a problem

What does Logstash provide?
Empowerment
Aggregation

What does Logstash provide?
Empowerment
Aggregation
Search

What is Logstash (ELK stack)?
Centralization

What is Logstash (ELK stack)?
Centralization
Visualization

What is Logstash (ELK stack)?
Centralization
Visualization
Segregation

Components
httpd
Logstash
shipper
redis
Logstash
indexer
Elastic
search
Kibana
MySQL
Logstash
shipper

Logstash-forwarder shipper
Small package (java) (used to be “lumberjack”)

Logstash-forwarder shipper
Small package (java) (used to be “lumberjack”)
Grok processing can happen on client

Logstash-forwarder shipper
Small package (java) (used to be “lumberjack”)
Grok processing can happen on client
One shipper, multiple logfiles (perms)

Redis
Message broker
SSL encryption for non-VPN networks

Redis
Message broker
SSL encryption for non-VPN networks
Scalable

Logstash Indexer
Java app
Grok processing of logs off app-servers

Logstash Indexer
Java app
Grok processing of logs off app-servers
Outputs to multiple endpoints, if required

Logstash Indexer
Java app
Grok processing of logs off app-servers
Outputs to multiple endpoints, if required
Scalable

Elasticsearch
Mature, scalable db
Document-based index, Query DSL API

Elasticsearch
Mature, scalable db
Document-based index, Query DSL API
Sharded, clustered

Elasticsearch
Mature, scalable db
Document-based index, Query DSL API
Sharded, clustered
Indices are stored in date format

Kibana
Standalone (used to be simple website)

Kibana
Standalone (used to be simple website)
Points directly at the Elasticsearch db

Kibana
Standalone (used to be simple website)
Points directly at the Elasticsearch db
Solr Lucene syntax

Kibana
Standalone (used to be simple website)
Points directly at the Elasticsearch db
Solr Lucene syntax
Scalable

Tricks
Elasticsearch Curator, single indices

Tricks
Elasticsearch Curator, single indices
Outputs to Graphite, Nagios, Cloudwatch,
Datadog, GELF, Slack, Hipchat, PagerDuty etc.

Tricks
Elasticsearch Curator, single indices
Outputs to Graphite, Nagios, Cloudwatch,
Datadog, GELF, Slack, Hipchat, PagerDuty etc.
Kibana dashboards

Gotchas
Logstash Elasticsearch client (versions, AWS)

Gotchas
Logstash Elasticsearch client (versions, AWS)
Enterprise ready? (utter lack of users/security,
streams, alerting)

Gotchas
Logstash Elasticsearch client (versions, AWS)
Enterprise ready? (utter lack of users/security,
streams, alerting)
Graylog – Alternative log engine

Links
Jordan Sissels Github - https://github.com/jordansissel
Jordan Sissel pres - http://semicomplete.com/presentations/logstash-
scale11x/#/33
Logstash book - http://www.logstashbook.com/
Enterprise ready? (users, streams, alerting)

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