Kf supports a variety of buildpacks. This document covers some starter examples for using them.
Before you begin
- You should have Kf running on a cluster.
- You should have run
kf target -s <space-name>to target your space.
Java (v2) buildpack
Use spring initializr to create a Java 8 maven project with a spring web dependency and JAR packaging. Download it, extract it, and once extracted you can generate a JAR.
./mvnw
package
Push the JAR to Kf with the Java v2 buildpack.
kf
push
java-v2
--path
target/helloworld-0.0.1-SNAPSHOT.jar
Java (v3) buildpack
Use spring initializr to create a Java 8 maven project with a spring web dependency and JAR packaging. Download it, extract it, and once extracted, push to Kf with the cloud native buildpack.
kf
push
java-v3
--stack
org.cloudfoundry.stacks.cflinuxfs3
Python (v2) buildpack
Create a new directory with files as shown in the following structure.
tree
.
├──
Procfile
├──
requirements.txt
└──
server.py
cat
Procfile
web:
python
server.py
cat
requirements.txt
Flask
cat server.py from flask import Flask import osapp = Flask ( __name__ )@app.route ( '/' ) def hello_world () : return 'Hello, World!'if __name__ == "__main__" : port = int ( os.getenv ( "PORT" , 8080 )) app.run ( host = '0.0.0.0' , port = port )
Push the Python flask app using v2 buildpacks.
kf
push
python
--buildpack
python \_
buildpack
Python (v3) buildpack
(same as above)
Push the Python flask app using cloud native buildpacks.
kf
push
pythonv3
--stack
org.cloudfoundry.stacks.cflinuxfs3
Staticfile (v2) buildpack
Create a new directory that holds your source code.
Add an index.html
file with this content.
<!DOCTYPE html>
<html lang="en">
<head><title>Hello, world!</title></head>
<body><h1>Hello, world!</h1></body>
</html>
Push the static content with the staticfile buildpack.
kf
push
staticsite
--buildpack
staticfile \_
buildpack
