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Create a python openstack webserver example (#1004)
* Create a python openstack webserver example Shows how to create an openstack instance starting with image upload, addition of security group rules, creating a keypari for ssh access and a custom user data script to run on the instance * Use openstack and horizon in step description
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‎README.md

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- [Python](#python-3)
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- [Go](#go-3)
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- [C#](#c-3)
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- [Openstack](#openstack)
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- [Cloud](#cloud)
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- [DigitalOcean](#digitalocean)
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- [Multicloud](#multicloud)
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--------- | --------- |
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[Guestbook](kubernetes-go-guestbook) | Build and deploy a simple, multi-tier web application using Kubernetes and Docker.
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## Openstack
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### Python
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[Web Server](openstack-py-webserver) | Deploy an Openstack instance and open port 8000.
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## Cloud
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### TypeScript

‎openstack-py-webserver/Pulumi.yaml

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name: pulum
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runtime:
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name: python
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options:
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virtualenv: venv
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description: A minimal OpenStack Python Pulumi program

‎openstack-py-webserver/README.md

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[![Deploy](https://get.pulumi.com/new/button.svg)](https://app.pulumi.com/new)
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# Web Server Using Openstack
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## Prerequisites
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1. [Install Pulumi](https://www.pulumi.com/docs/get-started/install/)
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1. [Configure Pulumi for Openstack](https://www.pulumi.com/docs/intro/cloud-providers/openstack/setup/)
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1. [Configure Pulumi for Python](https://www.pulumi.com/docs/intro/languages/python/)
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## Deploying and running the program
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1. Create a new stack:
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```bash
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$ pulumi stack init
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```
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2. Modify `__main__.py` to include your keypair and image
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3. Run `pulumi up` to preview and deploy changes:
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```bash
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$ pulumi up
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Previewing update (dev):
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Type Name Plan
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pulumi:pulumi:Stack pulum-dev
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+ ├─ openstack:images:Image fedora create
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+ ├─ openstack:compute:Keypair default create
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+ ├─ openstack:networking:SecGroupRule secgroupRule1 create
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+ ├─ openstack:networking:SecGroupRule secgroupRule2 create
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+ ├─ openstack:networking:SecGroupRule secgroupRule3 create
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+ └─ openstack:compute:Instance test_fedora create
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Outputs:
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~ instance_ip: "192.168.0.243" => output<string>
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Resources:
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+ 6 to create
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1 unchanged
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Resources:
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+ 6 created
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1 unchanged
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Duration: 38s
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```
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4. View the host name and IP address of the instance via `stack output`:
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```bash
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$ pulumi stack output
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Current stack outputs (1):
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OUTPUT VALUE
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instance_ip 192.168.0.243
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```
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5. Verify that the Openstack instance exists, by either using the Horizon dashboard or running `openstack server list`.
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```bash
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$ openstack server list
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+--------------------------------------+-------------+--------+-------------------------------------+--------------------------+----------+
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| ID | Name | Status | Networks | Image | Flavor |
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+--------------------------------------+-------------+--------+-------------------------------------+--------------------------+----------+
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| 8bdf8a6d-ac53-4448-ae09-e2a08ad554a0 | test_fedora | ACTIVE | public=192.168.0.243, 2001:db8::36b | fedora | m1.small |
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+--------------------------------------+-------------+--------+-------------------------------------+--------------------------+----------+
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```
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## Clean up
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To clean up resources, run `pulumi destroy` and answer the confirmation question at the prompt.

‎openstack-py-webserver/__main__.py

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"""An OpenStack Python Pulumi program"""
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import pulumi
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import pulumi_openstack as openstack
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fedora_image = openstack.images.Image(
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"fedora",
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name="fedora",
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container_format="bare",
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disk_format="qcow2",
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image_source_url="https://ftp.plusline.net/fedora/linux/releases/34/Cloud/x86_64/images/Fedora-Cloud-Base-34-1.2.x86_64.qcow2",
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visibility="public",
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)
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default_keypair = openstack.compute.keypair.Keypair(
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"default",
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name="default",
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public_key="ssh-ed25519 <public key>",
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)
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secgroup_default = openstack.networking.get_sec_group(name="default")
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secgroup_rule_ssh = openstack.networking.SecGroupRule(
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"secgroupRule1",
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direction="ingress",
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ethertype="IPv4",
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port_range_max=22,
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port_range_min=22,
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protocol="tcp",
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remote_ip_prefix="0.0.0.0/0",
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description="Allow ssh",
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security_group_id=secgroup_default.id,
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)
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secgroup_rule_python_server = openstack.networking.SecGroupRule(
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"secgroupRule2",
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direction="ingress",
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ethertype="IPv4",
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port_range_max=8000,
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port_range_min=8000,
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protocol="tcp",
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remote_ip_prefix="0.0.0.0/0",
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description="Allow python http server",
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security_group_id=secgroup_default.id,
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)
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secgroup_rule_icmp = openstack.networking.SecGroupRule(
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"secgroupRule3",
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direction="ingress",
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ethertype="IPv4",
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protocol="icmp",
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remote_ip_prefix="0.0.0.0/0",
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description="Allow ping",
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security_group_id=secgroup_default.id,
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)
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network_public = openstack.networking.get_network(name="public")
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user_data = """
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#!/bin/bash
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echo "Hello, World!" > index.html
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nohup python3 -m http.server &
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"""
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fedora = openstack.compute.Instance(
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"test_fedora",
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name="test_fedora",
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flavor_name="m1.small",
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image_id=fedora_image.id,
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key_pair=default_keypair.id,
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security_groups=["default"],
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networks=[
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openstack.compute.InstanceNetworkArgs(uuid=network_public.id),
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],
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user_data=user_data,
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)
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# Export the IP of the instance
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pulumi.export("instance_ip", fedora.access_ip_v4)

‎openstack-py-webserver/requirements.txt

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pulumi>=3.0.0,<4.0.0
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pulumi-openstack>=3.0.0,<4.0.0

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