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Add ability to build images within Openstack
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# Building Images on OpenStack | ||
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## Hypervisor | ||
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The image is built using OpenStack. | ||
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### Prerequisites for OpenStack builds | ||
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First, check for prerequisites at [Packer docs for the OpenStack builder](https://developer.hashicorp.com/packer/plugins/builders/openstack). | ||
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Also ensure that you have a [Ubuntu 20.04](https://cloud-images.ubuntu.com/focal/current/) or [Ubuntu 22.04](https://cloud-images.ubuntu.com/jammy/current/) cloud image available in your OpenStack instance before continuing as it will need to be referenced. | ||
This build process also supports Flatcar Linux, but only Stable has been tested. | ||
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#### Note | ||
> Other operating systems could be supported and additions are welcome. | ||
## Setup Openstack authentication | ||
Ensure you have set up your method of authentication. See the [examples here](https://docs.openstack.org/python-openstackclient/zed/cli/authentication.html). | ||
You can also check out the [packer builder](https://developer.hashicorp.com/packer/plugins/builders/openstack#configuration-reference) for more information on authentication. | ||
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You should be able to run commands against OpenStack before running this builder, otherwise it will fail. | ||
You can test with a simple command such as `openstack image list`. | ||
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## Building Images | ||
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The build [prerequisites](../capi.md#prerequisites) for using `image-builder` for | ||
building OpenStack images are managed by running: | ||
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```bash | ||
cd image-builder/images/capi | ||
make deps-openstack | ||
``` | ||
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### Define variables for OpenStack build | ||
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Using the [Openstack packer provider](https://developer.hashicorp.com/packer/plugins/builders/openstack), an instance will be deployed and an image built from it. | ||
A certain set of environment variables must be defined in a json file and referenced as shown below in the build example. | ||
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Replace UPPERCASE variables with your values. | ||
```json | ||
{ | ||
"source_image": "OPENSTACK_SOURCE_IMAGE_ID", | ||
"networks": "OPENSTACK_NETWORK_ID", | ||
"flavor": "OPENSTACK_INSTANCE_FLAVOR_NAME", | ||
"floating_ip_network": "OPENSTACK_FLOATING_IP_NETWORK_NAME", | ||
"image_name": "KUBE-UBUNTU", | ||
"image_visibility": "public", | ||
"image_disk_format": "raw", | ||
"volume_type": "", | ||
"ssh_username": "ubuntu" | ||
} | ||
``` | ||
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Check out `images/capi/packer/openstack/packer.json` for more variables such as allowing the use of floating IPs and config drives. | ||
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### Building Image on OpenStack | ||
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From the `images/capi` directory, run `PACKER_VAR_FILES=var_file.json make build-openstack-<DISTRO>`. | ||
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An instance is built in OpenStack from the source image defined. Once completed, the instance is shut down and the image is created. | ||
This image will default to private, however this can be controlled via `image_visibility`. | ||
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For building a ubuntu 22.04-based CAPI image with Kubernetes 1.23.15, run the following commands: | ||
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#### Example | ||
```bash | ||
$ git clone https://github.com/kubernetes-sigs/image-builder.git | ||
$ cd image-builder/images/capi/ | ||
$ make deps-openstack | ||
$ PACKER_VAR_FILES=var_file.json make build-openstack-ubuntu-2204 | ||
``` | ||
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The resulting image will be named `ubuntu-2204-kube-v1.23.15` based on the following format: `<OS>-kube-<KUBERNETES_SEMVER>`. | ||
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This can be modified by overriding the `image_name` variable if required. |
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# Copyright 2020 The Kubernetes Authors. | ||
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# Licensed under the Apache License, Version 2.0 (the "License"); | ||
# you may not use this file except in compliance with the License. | ||
# You may obtain a copy of the License at | ||
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# http://www.apache.org/licenses/LICENSE-2.0 | ||
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# Unless required by applicable law or agreed to in writing, software | ||
# distributed under the License is distributed on an "AS IS" BASIS, | ||
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
# See the License for the specific language governing permissions and | ||
# limitations under the License. | ||
--- | ||
- name: Install cloud-init packages | ||
apt: | ||
name: "{{ packages }}" | ||
state: present | ||
force_apt_get: yes | ||
vars: | ||
packages: | ||
- cloud-init | ||
- cloud-guest-utils | ||
- cloud-initramfs-copymods | ||
- cloud-initramfs-dyn-netconf | ||
when: ansible_os_family == "Debian" | ||
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- name: Disable Hyper-V KVP protocol daemon on Ubuntu | ||
systemd: | ||
name: hv-kvp-daemon | ||
state: stopped | ||
enabled: false | ||
when: ansible_os_family == "Debian" |
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# See the OWNERS docs at https://go.k8s.io/owners | ||
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approvers: | ||
- cluster-api-openstack-maintainers | ||
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reviewers: | ||
- cluster-api-openstack-maintainers | ||
- image-builder-openstack-reviewers | ||
- image-builder-openstack-maintainers |
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{ | ||
"ansible_extra_vars": "ansible_python_interpreter=/opt/bin/python", | ||
"build_name": "flatcar", | ||
"crictl_source_type": "http", | ||
"distro_name": "flatcar", | ||
"kubernetes_cni_source_type": "http", | ||
"kubernetes_source_type": "http", | ||
"source_image": "flatcar", | ||
"systemd_prefix": "/etc/systemd", | ||
"sysusr_prefix": "/opt", | ||
"sysusrlocal_prefix": "/opt" | ||
} |
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