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Daryl Metzler djmetzle

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@djmetzle
djmetzle / description.md
Last active September 25, 2023 21:04
Ractor Play 
graph LR
    Clock-->Driver
    Driver-->Printer
    Driver-->Logger
@djmetzle
djmetzle / thumbprint.sh
Last active December 12, 2022 23:29
Script to fetch and calculate OpenID Connect thumbprint for Github Actions (or others)
GITHUB_ACTIONS='token.actions.githubusercontent.com'
OIDC_PATH='.well-known/openid-configuration'
HOST=$(curl https://$GITHUB_ACTIONS/$OIDC_PATH \
| jq -r '.jwks_uri | split("/")[2]')
echo "Fetching thumbprint for: $HOST"
RAWCERT=$(echo | openssl s_client -servername $HOST -showcerts -connect $HOST:443 2> /dev/null)
CERT=$(echo "$RAWCERT" | sed -n -e '/BEGIN/h' -e '/BEGIN/,/END/H' -e '$x' -e '$p' | tail -n +2)
SSLPRINT=$(openssl x509 -fingerprint -noout <<< $CERT)
@djmetzle
djmetzle / graphite-udp-dumper.rb
Created March 24, 2022 21:47
StatsD UDP dumper
require 'socket'
sock = UDPSocket.new()
sock.bind('', 8125)
p sock
while true do
p sock.recvfrom(2000)
end
sock.close
@djmetzle
djmetzle / kubeadm-cert-renew-howto.md
Last active October 12, 2022 17:33
Update certs on old kubeadm clusters

Howto renew certs on older kubeadm clusters

There's a bug with old versions of kubeadm, in that it can update certificates, but doesn't correctly "wire them in".

Are you trying to connect to the cluster and getting:

$ kubectl <foo>
Unable to connect to the server: x509: certificate has expired or is not yet valid
@djmetzle
djmetzle / checkS3Logging.sh
Created October 2, 2019 21:31
List which S3 buckets have logging enabled
#!/bin/bash -e
S3_BUCKETS=( `aws s3api list-buckets --query "Buckets[].Name" --output=text` )
for bucket in "${S3_BUCKETS[@]}"; do
BUCKET_LOGGING=`aws s3api get-bucket-logging --bucket $bucket`
if [ -n "$BUCKET_LOGGING" ]; then
echo "$bucket: $BUCKET_LOGGING"
fi
done
@djmetzle
djmetzle / dispatch.rb
Created September 18, 2019 16:12
Class dispatch
class Foo
def quack
puts "quack"
end
end
class Bar
def bark
puts "woof"
end
@djmetzle
djmetzle / cycle-test.yml
Created August 21, 2019 23:10
Proof that docker-compose gracefully handles cyclic dependency resolution
---
version: '3'
services:
aaa:
container_name: aaa
image: busybox
command:
- ping
- bbb
restart: on-failure
@djmetzle
djmetzle / tree.rb
Created June 19, 2019 19:52
Procedurally generated background
require 'victor'
require 'rgb'
WIDTH=3840
HEIGHT=2160
prng = Random.new
RING_RAD = prng.rand(30..80)
ANGLE_SPREAD=Random.new.rand(3..10)
@djmetzle
djmetzle / AbstractController.php
Created June 4, 2019 21:34
a new attempt at a controller interface
<?
declare(strict_types = 1);
namespace iFixit\Framework\Interfaces;
abstract class AbstractController {
abstract public function routes(): RouteList {}
}
@djmetzle
djmetzle / gist:d46f20889e953a095998dc4ec2549033
Created May 30, 2019 23:23
default Fedora FPM settings
[www]
user = apache
group = apache
listen = /run/php-fpm/www.sock
listen.allowed_clients = 127.0.0.1
pm = dynamic
pm.max_children = 50
pm.start_servers = 5
pm.min_spare_servers = 5
pm.max_spare_servers = 35