The document discusses warnings and errors encountered on a Ubuntu 15.04 desktop, as well as recommendations for addressing them, such as running e2fsck and reducing log levels. It emphasizes the importance of actionable error messages for effective troubleshooting. Additionally, it reflects on the responsibilities associated with system errors and user-related issues.

1. www.immobilienscout24.de
Berlin | 26.10.2015 | Schlomo Schapiro
Systems Architect / Open Source Evangelist
http://creativecommons.org/licenses/by-nd/4.0
WARNING
is a waste of my time
@schlomoschapiro

2. WARNING - Datafile Has
Warnings And/Or Errors
Oct 24 07:54:25 brho colord[1110]:
(colord:1110): Cd-WARNING **: failed to
get session [pid 5151]: Unknown error -2
Oct 17 07:54:09 brho kernel:
[292950.865647] EXT4-fs (sdb1): warning:
mounting fs with errors, running e2fsck
is recommended
dpkg: warning: ignoring
pre-dependency problem!

3. DEBUG INFO WARN ERROR FATAL
3 95 171 97 0
Analysis of /var/log* on my
Ubuntu 15.04 desktop:

4. DEBUG INFO WARN ERROR FATAL

5. DEBUG INFO WARN ERROR FATAL

6. DEBUG INFO WARN ERROR FATAL
AUTOMATION
FRIENDLY
?
DEBUG INFO WARN ERROR FATAL
3 95 171 97 0

7. WARN
= Not
Responsible

8. DEBUG INFO WARN ERROR FATAL
INFO FATAL
Nothing
happened:
Keep
working
System
broken:
Replace
automatically

9. Take Away
◉ Reduce Log Levels
◉ PLEASE: Actionable Error Messages
◉ Server Logs = Server Trouble
➨ ERROR connection to DB
➨ ERROR disk full
➨ …
◉ User Trouble = Customer Support
➨ ERROR user tried 100 times wrong password
➨ ERROR invalid user email, not sending order confirmation
➨ ERROR user did not save shopping basket
➨ …
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