101 lines
2.4 KiB
Bash
101 lines
2.4 KiB
Bash
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#!/bin/bash
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set -euo pipefail
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#
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# Helper functions
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#
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declare -i term_width=80
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h1() {
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declare border padding text
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border='\e[1;34m'"$(printf '=%.0s' $(seq 1 "$term_width"))"'\e[0m'
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padding="$(printf ' %.0s' $(seq 1 $(((term_width - $(wc -m <<<"$*")) / 2))))"
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text="\\e[1m$*\\e[0m"
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echo -e "$border"
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echo -e "${padding}${text}${padding}"
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echo -e "$border"
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}
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h2() {
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printf '\e[1;33m==>\e[37;1m %s\e[0m\n' "$*"
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}
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domain="$(hostname --domain)"
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h1 "Deploy example app"
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# deploy.
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kubectl apply -f - <<EOF
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---
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# see https://kubernetes.io/docs/concepts/services-networking/ingress/
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# see https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.21/#ingress-v1-networking-k8s-io
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apiVersion: networking.k8s.io/v1
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kind: Ingress
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metadata:
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name: example-app
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spec:
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rules:
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- host: example-app.$domain
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http:
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paths:
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- path: /
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pathType: Prefix
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backend:
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service:
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name: example-app
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port:
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name: web
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---
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# see https://kubernetes.io/docs/concepts/services-networking/service/
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# see https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.21/#service-v1-core
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apiVersion: v1
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kind: Service
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metadata:
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name: example-app
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spec:
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selector:
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app: example-app
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type: ClusterIP
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ports:
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- name: web
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protocol: TCP
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port: 80
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targetPort: web
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---
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# see https://kubernetes.io/docs/concepts/workloads/controllers/daemonset/
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# see https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.21/#daemonset-v1-apps
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# see https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.21/#podtemplatespec-v1-core
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# see https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.21/#container-v1-core
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apiVersion: apps/v1
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kind: DaemonSet
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metadata:
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name: example-app
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spec:
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selector:
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matchLabels:
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app: example-app
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template:
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metadata:
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labels:
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app: example-app
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spec:
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nodeSelector:
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kubernetes.io/os: linux
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containers:
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- name: example-app
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image: ruilopes/example-docker-buildx-go:v1.2.0
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args:
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- -listen=:8000
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ports:
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- name: web
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containerPort: 8000
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resources:
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requests:
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memory: 20Mi
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cpu: "0.1"
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limits:
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memory: 20Mi
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cpu: "0.1"
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EOF
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