[CSE373] Lecture, winston-cloudwatch process inspection, Ubuntu 16.10 daily crash (-168)
CSE373 2012 - Lecture 18 - Exhaustive Search & Backtracking
https://www.youtube.com/watch?v=usxrn66JDEo&feature=youtu.be&list=PLOtl7M3yp-DV69F32zdK7YJcNXpTunF2b
winston-cloudwatch process inspection
Started creating a couple scripts to mimic a real life process that logs
to AWS CloudWatch, basically a running process that listens for SIGUSR1
and a sh script that sends that signal.
The goal is to find out if calling setInterval in winston-cloudwatch
is working as I think it is, I am seeing some weird behaviour. One example
is that logEvents is passed through to the integration library file as empty,
which is something that should not happen, feels like I a missing something
obvious about how Node.js works in this scenario.
Also it looks like when I'm logging twice in a row as in
winston.loggers.get('category1').error('1');
winston.loggers.get('category2').error('2');two intervals are started, which is something that should not happen.
Dealing with continuous crashes on my Ubuntu 16.10
I have half a dozen error reports a day, plus once a day the screen freezes with a gray color with a graphical effect as if it was an old TV being turned off (a central white line collapsing to a dot).
Sometimes I get an extended error report saying
avahi-demon crashed with SIGABRT in avahi_malloc
This is avahi-demon man page https://linux.die.net/man/8/avahi-daemon, which looks like a service
discovery tool.
I gave a look at avahi-demon --help and it looks like avahi-demon -k killed it.
I will give it a couple days to see if I still get so many crashes and error reports. If it will turn out to be responsible I could either remove it, update it, or just disable it at startup, so if I will ever need to discover something like a printer I could always turn it back on. (and of course I will never remember of this decision)