skriebel

https://www.simpleprecision.com/ubuntu-16-04-lxd-networking-simple-bridge/

skriebel

# On the host
=============

lxc config set openvpn raw.lxc 'lxc.cgroup.devices.allow = c 10:200 rwm'
lxc config device add openvpn tun unix-char path=/dev/net/tun

# In the container
==================

1. mknod /dev/net/tun c 10 200

skriebel

ruby {
    code => "event['_logstash_host'] = Socket.gethostname"
}

skriebel

Problem:  We have a log line that includes a perl class that we want to log the class 
and method in their respected fields.  An example class and method in perl:

Animal::Dog::bark

In this example, "bark" is the method.  "Animal::Dog" is the class.

After some searching and hacking, I found a solution that works with Logstash 1.4.2

Assume the input is "Animal::Dog::bark".

skriebel

#!/usr/bin/perl


#
# Useful for making maps like the one at http://backspace.com/mapapp/javascript_world
#


use XML::TreeBuilder;

skriebel

Shell + Perl one-liner to sort and show the sizes of your pwd.

du -k | sort -n | perl -ne 'if ( /^(\d+)\s+(.*$)/){$l=log($1+.1);$m=int($l/log(1024)); printf  ("%6.1f\t%s\t%25s  %s\n",($1/(2**(10*$m))),(("K","M","G","T","P")[$m]),"*"x (1.5*$l),$2);}'