Ted Hahn GauntletWizard

Read one link per day, mull on it, and ask clarifying questions from your local SRE

What is a deployment?
- Don't ready the whole doc - It's long and technical. Just read the preview, and know the primitives it mentions - Create, Update, Rollback, Scale, Pause, Status, Cleanup.
Pods
Persistent Volumes in k8s.
- Editorializing for a bit; there's a bunch here, its very complex and only adds more. There's very few good reasons to use volumes. It doesn't reduce complexity vs. provisioning your backing store in more traditional ways. K8s is great because we're moving to stateless microservices; for stateful services like database backends, generally a losing proposition. Except when you can rapidly and automatically rebuild from quorum; I'll discuss those later.
[What is a node?](https://kuber

Must Dos:

Use terraform, or other declarative infrastructure
Use Organizations for billing. Set up an Org account, with an Infra account for build artifacts/login, and development, staging, and prod accounts with appropriate permissions.
Developers should all have admin permissions in dev, and only necessary permissions in staging and prod. Staging should be exactly like prod except that customers aren't using it. Dev should be as close as possible, with any changes being backed out and repeated in staging before they make it to staging.

I hereby claim:

To claim this, I am signing this object:

	kubectl --context CLUSTER run --image ubuntu pgtool -- /bin/bash -c "apt-get update; apt-get install -y postgresql-client; trap : TERM INT; sleep infinity & wait"
	kubectl --context gke_lido-staging_us-east1_lido-staging-us-east1 run --image redis redis -- /bin/bash -c "trap : TERM INT; sleep infinity & wait"

	kubectl --context CLUSTER run --image amazon/aws-cli --command --overrides='{"spec": { "serviceAccountName": "default"}}' cli -- /bin/bash -c "trap : TERM INT;sleep infinity"
	yq -o json '.spec.template \| .metadata.name="bc-test" \| .kind = "Pod" \| .apiVersion = "v1" \| .spec.containers[].command = ["/bin/bash", "-c", "sleep 86400"] \| .spec.containers[].livenessProbe=null \| .spec.containers[].readinessProbe=null' deployment.yaml \| kubectl apply -f -

	#!/bin/bash
	# honeysave.sh - Saves honeycomb boards for version control purposes

	WRITEKEY=""

	honeycurl() {
	curl -H "X-Honeycomb-Team: ${WRITEKEY}" https://api.honeycomb.io/1/boards/$*
	}

	save() {

	# Find our image, and first and last images.
	# Gimp GIF export animates from bottom to top, so these are backwards.
	foo = gimp.image_list()[0]
	start = foo.layers[0]
	end = foo.layers[1]


	start.visible = False
	end.visible = False
	# Step - How much we increase opacity each time.

	#!/usr/bin/env python
	# gceips.py - A script to print the cidr ranges of all of GCE.
	# https://cloud.google.com/compute/docs/faq#where_can_i_find_short_product_name_ip_ranges

	import re
	# pip install dnspython
	import dns.resolver
	from dns.rdatatype import TXT

	includesmatch = re.compile(r'include:([\w\.-]*)')