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healthz

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Waylon Walker 2024-03-17 21:44:55 -05:00
parent 4ad7bdd164
commit 701b43a22a
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4 changed files with 89 additions and 8 deletions
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1
hello-world/Dockerfile
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@ -4,5 +4,6 @@ WORKDIR /app
COPY hello-world/app.py . COPY hello-world/app.py .
ENV FLASK_APP=app.py ENV FLASK_APP=app.py
ENV FLASK_RUN_HOST=0.0.0.0 ENV FLASK_RUN_HOST=0.0.0.0
HEALTHCHECK CMD curl --fail http://localhost:5000/healthz || exit 1
CMD ["flask", "run"] CMD ["flask", "run"]

86
hello-world/app.py
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@ -1,8 +1,90 @@
from flask import Flask from pathlib import Path
from flask import Flask, request
app = Flask(__name__) app = Flask(__name__)
LIVE = Path("livez")
LIVE.write_text("ok")
@app.route("/") @app.route("/")
def hello_world(): def hello_world():
return "Hello, V2" version = "v3"
if "5000" in request.base_url:
mode = "local"
header_color = "#a0dfa0"
elif "30001" in request.base_url:
mode = "active"
header_color = "#a0c0df"
elif "30002" in request.base_url:
mode = "preview"
header_color = "#dfa0df"
else:
mode = "unknown"
header_color = "#dfc0a0"
import time
LIVE.write_text("no")
time.sleep(10)
LIVE.write_text("ok")
return f"""
<html>
<head>
<title>{mode}: Hello, World!</title>
<style>
body {{
width: 100vw;
height: calc(100vh - 100px);
background-color: #333;
color: #eee;
margin: 0 auto;
font-family: Tahoma, Verdana, Arial, sans-serif;
}}
main {{
width: 100%;
height: 100%;
display: flex;
flex-direction: column;
justify-content: center;
align-items: center;
}}
header {{
width: 100%;
height: 100px;
background-color: {header_color};
color: #333;
display: flex;
justify-content: center;
align-items: center;
}}
</style>
</head>
<body>
<header>
<h2>{mode}: Hello, World! {version}</h2>
</header>
<main>
<h1>Hello, World!</h1>
<p>Mode: {mode}</p>
<p>Version: {version}</p>
</main>
</body>
</html>
"""
@app.route("/healthz")
def healthz():
# return "failed", 500
return "I'm still here.", 200
@app.route("/livez")
def livez():
if LIVE.read_text() == "ok":
return "All done working here."
return "I'm working here!", 500

4
hello-world/deployments/deployment.yaml
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@ -31,6 +31,10 @@ spec:
image: docker.io/waylonwalker/learn-rollouts:v1 image: docker.io/waylonwalker/learn-rollouts:v1
ports: ports:
- containerPort: 5000 - containerPort: 5000
livenessProbe:
httpGet:
path: /-/healthz
port: 5000
strategy: strategy:
blueGreen: blueGreen:
# activeService specifies the service to update with the new template hash at time of promotion. # activeService specifies the service to update with the new template hash at time of promotion.

6
rollouts-app/rollouts.yaml
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@ -1,9 +1,3 @@
# create argo-rollouts namespace
apiVersion: v1
kind: Namespace
metadata:
name: argo-rollouts
# This is an auto-generated file. DO NOT EDIT # This is an auto-generated file. DO NOT EDIT
apiVersion: apiextensions.k8s.io/v1 apiVersion: apiextensions.k8s.io/v1
kind: CustomResourceDefinition kind: CustomResourceDefinition