KAWACHI Takashi tkawachi

Run this in order to backup all you k8s cluster data. It will be saved in a folder bkp. To restore the cluster, you can run kubectl apply -f bkp.

Please note: this recovers all resources correctly, including dynamically generated PV's. However, it will not recover ELB endpoints. You will need to update any DNS entries manually, and manually remove the old ELB's.

Please note: This has not been tested with all resource types. Supported resource types include:

services
replicationcontrollers
secrets
deployments
horizontal pod autoscalers

sbt dist

これだけで${PROJECT_ROOT}/target/universal/に起動スクリプトなどを含んだパッケージ(zip)が生成される。

内部でsbt-native-packagerが呼ばれる。

これは一応プラグインだけど、今のPlayではビルトインなので、addSbtPluginする必要はない。

けど、まだEBでそのままデプロイできるパッケージではない。

Procfile

鍵の作成

$ gpg --gen-key

いろいろ聞かれるので答える。

鍵をなくした時や盗まれた時に無効化できるように revoke certificate を作る。

$ gpg --gen-revoke -o "revoke.cert" "KeyID"

Kafkaつらい

Kafkaとは？

もともとLinkedinが作ったやつ
今はapacheプロジェクト
Scalaで作られてる
公式には "Apache Kafka is publish-subscribe messaging rethought as a distributed commit log." って書いてあった

基本的な(?)情報

Auto-deploying built products to gh-pages with GitHub Actions

This is a set up for projects which want to check in only their source files, but have their gh-pages branch automatically updated with some compiled output every time they push.

A file below this one contains the steps for doing this with Travis CI. However, these days I recommend GitHub Actions, for the following reasons:

It is much easier and requires less steps, because you are already authenticated with GitHub, so you don't need to share secret keys across services like you do when coordinate Travis CI and GitHub.
It is free, with no quotas.
Anecdotally, builds are much faster with GitHub Actions than with Travis CI, especially in terms of time spent waiting for a builder.

  /**
   * {{{
   * prop> import org.scalacheck.{Gen, Arbitrary}
   * prop> import org.scalacheck.Arbitrary._
   * prop> import foo.BarType
   * prop> val itemTypeGen = Gen.oneOf(BarType.values)
   * prop> implicit val barTypeArbitrary = Arbitrary(barTypeGen)
   * prop> (i: Int, t: BarType) => i > 10
   * }}}



	# ==== Emojis ====
	# 🐛 :bug: バグ修正
	# 👍 :+1: 機能改善
	# ✨ :sparkles: 部分的な機能追加
	# 🎉 :tada: 盛大に祝うべき大きな機能追加
	# ♻️ :recycle: リファクタリング
	# 🚿 :shower: 不要な機能・使われなくなった機能の削除
	# 💚 :green_heart: テストやCIの修正・改善

	// **************************************************
	// AWS セキュリティグループのモデル
	// **************************************************

	// 通信プロトコル
	enum Protocol { TCP, UDP, ICMP }

	// 通信ポート
	sig Port {}

	import scalaz._
	import Free.FreeC

	class DDD[Entity, ID] {
	// repositoryへの操作を代数的データ型で定義し、それをFreeとCoyonedaの力によりモナドにして使う
	sealed abstract class RepositoryDSL[A]

	// 見つからないかもしれないので結果はOption型
	final case class ResolveBy(id: ID) extends RepositoryDSL[Option[Entity]]

	//
	// References:
	// - http://www.tikalk.com/java/type-safe-builder-scala-using-type-constraints/
	// - http://www.blumenfeld-maso.com/2011/05/statically-controlling-calls-to-methods-in-scala/
	// - http://dcsobral.blogspot.com/2009/09/type-safe-builder-pattern.html
	// - http://blog.rafaelferreira.net/2008/07/type-safe-builder-pattern-in-scala.html
	// - http://jim-mcbeath.blogspot.com/2009/09/type-safe-builder-in-scala-part-4.html
	// - http://villane.wordpress.com/2010/03/05/taking-advantage-of-scala-2-8-replacing-the-builder/
	// - http://debasishg.blogspot.com/2010/08/using-generalized-type-constraints-how.html#sthash.GKfUGq9p.dpuf
	//