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https://papertrailapp.com/events
  • core-db-01.sjc sshd: Accepted publickey for samantha from 4.28.11.28 port 37884 ssh2
  • core-db-01.sjc sshd: pam_unix(sshd:session): session opened for user samantha by (ui
  • www2 tomcat.log: 16:47:40,446 INFO [web.scripts.AbstractRuntimeContainer] Initiali
  • haproxy epa-http.txt: mac6100.home.edu.yamaguchi-u.ac.jp [30:00:52:22] "GET /docs/ci
  • www2 tomcat.log: 16:47:40,868 INFO [web.site.FrameworkHelper] Successfully Initial
  • farm-trivia-72 app/web.1: method=GET path=/a/product format=html controller=rails_ad
  • farm-trivia-72 app/web.1: User Load (1.2ms) SELECT "users".* FROM
  • dyno=web.1 connect=1ms service=44ms status=200 bytes=6407
  • haproxy epa-http.txt: 202.96.29.111 [30:01:48:16] "GET /waisicons/text.xbm HTTP/1.0"
  • haproxy epa-http.txt: dd14-034.compuserve.com [30:01:48:22] "GET /Rules.html HTTP/1.
  • haproxy epa-http.txt: www-c8.proxy.aol.com [30:01:48:23] "GET /docs/Searchable.html
  • farm-trivia-72 app/web.1: method=GET path=/a/ format=html controller=rails_admin/mai
  • remote_ip=23.252.53.179 user_id=1 params={}
  • www1 tomcat.log: 17:32:59,713 INFO [web.scripts.DeclarativeRegistry] Registered 67
  • www2 tomcat.log: Aug 27, 2009 4:52:30 PM org.apache.coyote.http11.Http11BaseProtocol
  • www1 tomcat.log: 17:32:59,714 INFO [web.scripts.AbstractRuntimeContainer] Initiali
  • www1 tomcat.log: 17:33:59,965 INFO [web.scripts.DeclarativeRegistry] Registered 10
  • haproxy epa-http.txt: sfsp03.slip.net [30:00:46:11] "GET /docs/Access HTTP/1.0" 302
  • www1 tomcat.log: 17:33:59,965 INFO [web.scripts.AbstractRuntimeContainer] Initiali
  • www2 tomcat.log: INFO: Pausing Coyote HTTP/1.1 on http-8080
  • www2 tomcat.log: Aug 27, 2009 4:52:31 PM org.apache.catalina.core.StandardService st
  • haproxy epa-http.txt: sfsp03.slip.net [30:00:46:18] "GET /Access/ HTTP/1.0" 200 2376
  • farm-trivia-72 heroku/router: at=info method=GET path="/a/product?_pjax=%5Bdata-pjax
  • farm-trivia-72 app/web.1: Product Load (1.7ms) SELECT "products".* FROM "product
  • farm-trivia-72 app/web.1: User Load (1.2ms) SELECT "users".* FROM "users" WHERE
  • farm-trivia-72 app/web.1: (1.3ms) SELECT COUNT(*) FROM "products"

Colors

Merriam-Webster defines "judicious" as "having, showing, or done with good judgment or sense." That's our guiding principle regarding colors.

As engineers, we're able to comprehend more logs in less time thanks to:

  • ANSI colors. Frameworks like Ruby on Rails and Java's log4j can output special codes to intelligently colorize log messages, but it's up to the receiver - us - to decide what to do with them. In Papertrail's event viewer, they just work and they look beautiful.
  • Subdued defaults. The event viewer isn't a painting we look at once in a museum. It may be open for hours at a time, and predictable colors help it stay easy on our eyes.