JeffPaine

i3 Window Manager Cheat Sheet

$mod refers to the modifier key (alt by default)

General

• startx i3 start i3 from command line
• $mod+<Enter> open a terminal
• $mod+d open dmenu (text based program launcher)
• $mod+r resize mode ( or to leave resize mode)
• $mod+shift+e exit i3

standaloneSA

msimmons@nagios:/opt/collectd/etc$ cat collectd.conf
# Generated by Puppet

#Hostname localhost
FQDNLookup true

#BaseDir "/var/lib/collectd"
#PluginDir "/usr/lib/collectd"
#TypesDB "/usr/share/collectd/types.db" "/etc/collectd/my_types.db"
Interval 10

shreyaskarnik

• With Docker 1.8.0 shipped new log-driver for GELF via UDP, this means that the logs from Docker Container(s) can be shipped directly to the ELK stack for further analysis.
• This tutorial will illustrate how to use the GELF log-driver with Docker engine.
• Step 1: Setup ELK Stack:
  • docker run -d --name es elasticsearch
  • docker run -d --name logstash --link es:elasticsearch logstash -v /tmp/logstash.conf:/config-dir/logstash.conf logstash logstash -f /config-dir/logstash.conf
  • Note the config for Logstash can be found at this link
  • docker run --link es:elasticsearch -d kibana
• Once the ELK stack is up now let's fire up our nginx container which ships its logs to ELK stack.

• LOGSTASH_ADDRESS=$(docker inspect --format '{{ .NetworkSettings.IPAddress }}' logstash)
• `docker run -d --net=host --log-driver=gelf --log-opt gelf-address=u

lazyfrosch

include ::profile::icinga2_global

# endpoints will be generated from zone
# no host value, so the agent will connect to the master

@@::icinga2::object::zone { $::fqdn:
  parent    => 'master',
  endpoints => {
    $::fqdn => {
    },

jtgiri

#!/bin/bash

set -e

# Those should be JENKINS vars
NAME=nginx-deployment-3
PODS_COUNT=3
CONTAINER_NAME=nginx
DOCKER_IMAGE='nginx:1.8'
# Template can be copied from deploy.tmp.yaml to update jenkins var

so0k

Kubectl output options

Let's look at some basic kubectl output options.

Our intention is to list nodes (with their AWS InstanceId) and Pods (sorted by node).

We can start with:

kubectl get no

olivere

package esi

import (
	"context"

	"github.com/olivere/elastic"
)

type BusinessLogic struct {
	s Searcher

jriquelme

cfg, err := external.LoadDefaultAWSConfig()
if err != nil {
  panic(err)
}
esCfg := elasticsearch.Config{
  Transport: &awssigner.V4Signer{
    RoundTripper: http.DefaultTransport,
    Credentials:  cfg.Credentials,
    Region:       cfg.Region,
  },

masterzen

Yubikey Setup

Preliminary steps

Install software

brew install gpg-suite
brew install yubico-piv-tool
brew install pinentry-mac