adding echo pod container
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baschno
13
echo-pod/Dockerfile
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13
echo-pod/Dockerfile
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FROM nginx:alpine
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COPY ./html /usr/share/nginx/html
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COPY pod_name.sh /usr/local/bin/pod_name.sh
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RUN chmod +x /usr/local/bin/pod_name.sh
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ENTRYPOINT [ "/usr/local/bin/pod_name.sh" ]
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EXPOSE 80
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CMD ["nginx", "-g", "daemon_off;"]
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3
echo-pod/README.md
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3
echo-pod/README.md
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Thanks to
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https://github.com/anveshmuppeda/kubernetes/tree/main/dockerfiles/echo-pod
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https://medium.com/@muppedaanvesh/building-an-echo-pod-to-display-kubernetes-pod-and-node-names-037801b27826
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39
echo-pod/echo-pod-deployment/echo-pod-deployment.yaml
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39
echo-pod/echo-pod-deployment/echo-pod-deployment.yaml
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apiVersion: apps/v1
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kind: Deployment
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metadata:
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name: echopod
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labels:
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app: echopod
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spec:
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replicas: 2 # Number of pod replicas
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selector:
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matchLabels:
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app: echopod
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template:
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metadata:
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labels:
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app: echopod
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spec:
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containers:
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- name: echopod
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image: bschnorbus/echo-pod
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ports:
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- containerPort: 80
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env:
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- name: NODE_NAME
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valueFrom:
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fieldRef:
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fieldPath: spec.nodeName
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---
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apiVersion: v1
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kind: Service
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metadata:
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name: echopod-service
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spec:
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type: NodePort # Change to LoadBalancer if using a cloud provider
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ports:
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- port: 80
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targetPort: 80
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nodePort: 30080 # Port to expose on the node
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selector:
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app: echopod
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36
echo-pod/html/index.html
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36
echo-pod/html/index.html
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>Pod Info</title>
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<link rel="stylesheet" href="styles.css">
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</head>
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<body>
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<div class="container">
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<!-- Logo and Kubernetes text -->
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<div class="logo-container">
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<img src="k8s-logo.png" alt="Kubernetes Logo" class="logo-img">
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<span class="k8s-text">Kubernetes</span>
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</div>
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<!-- Information Box -->
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<div class="info-box">
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<!-- Welcome message -->
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<div class="welcome-message">
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Welcome from Echo Pod
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</div>
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<!-- Node name section -->
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<div class="node-name">
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Node Name: {{NODE_NAME}}
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</div>
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<!-- Pod name section -->
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<div class="pod-name">
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Pod Name: {{POD_NAME}}
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</div>
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</div>
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</div>
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</body>
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</html>
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BIN
echo-pod/html/k8s-logo.png
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BIN
echo-pod/html/k8s-logo.png
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Binary file not shown.
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After Width: | Height: | Size: 85 KiB |
66
echo-pod/html/style.css
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66
echo-pod/html/style.css
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body {
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margin: 0;
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padding: 0;
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font-family: Arial, sans-serif;
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background-color: #f0f0f0;
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display: flex;
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justify-content: center;
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align-items: center;
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height: 100vh;
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position: relative; /* Allow absolute positioning of the footer */
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}
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.container {
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text-align: center;
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}
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.logo-container {
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display: flex;
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align-items: center;
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justify-content: center;
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margin-bottom: 20px;
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}
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.logo-img {
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width: 100px; /* Adjust the logo size here */
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margin-right: 10px; /* Space between the logo and text */
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}
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.k8s-text {
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font-size: 65px;
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font-weight: bold;
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color: #007acc;
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}
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.info-box {
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background-color: white; /* Background color of the box */
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border: 2px solid #007acc; /* Border color */
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border-radius: 8px; /* Rounded corners */
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padding: 20px; /* Space inside the box */
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box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1); /* Subtle shadow */
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margin: 20px auto; /* Center the box with margin */
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width: fit-content; /* Allow width to adjust based on content */
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max-width: 90%; /* Max width to prevent overflow */
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}
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.welcome-message, .node-name, .pod-name {
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font-size: 20px; /* Font size for all messages */
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color: #333; /* Text color for contrast */
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margin: 10px 0; /* Margin for spacing */
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}
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.welcome-message {
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font-size: 20px; /* Font size for all messages */
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font-weight: bold;
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}
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#footer {
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font-size: 14px;
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color: #666;
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position: absolute; /* Change to absolute positioning */
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bottom: 10px; /* Distance from the bottom */
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left: 50%; /* Center horizontally */
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transform: translateX(-50%); /* Adjust to center */
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text-align: center; /* Center text inside footer */
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font-style: italic;
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}
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15
echo-pod/pod_name.sh
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15
echo-pod/pod_name.sh
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@@ -0,0 +1,15 @@
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#!/bin/sh
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# Get hostname
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POD_NAME=$(hostname)
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POD_NAME=${POD_NAME:-"Unknown Pod Name"}
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# Get node name
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NODE_NAME=${NODE_NAME:-"Unknown Node Name"}
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# Replace the placeholders in the HTML with the actual pod name and node name
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sed -i "s/{{POD_NAME}}/${POD_NAME}/g" /usr/share/nginx/html/index.html
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sed -i "s/{{NODE_NAME}}/${NODE_NAME}/g" /usr/share/nginx/html/index.html
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# Start Nginx
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nginx -g 'daemon off;'
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