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Une autre manière de faire fonctionner OpenStack au-dessus de Kubernetes avec Atmosphere …

Karim
17 min readJun 3, 2024

Plusieurs projets de déploiement d’OpenStack qui reposent sur un cluster Kubernetes existent à commencer par OpenStack Helm :

Openstack-helm

The objective of OpenStack-Helm is to facilitate the deployment, maintenance, and upgrading of modular OpenStack…

wiki.openstack.org

GitHub - openstack/openstack-helm: Helm charts for deploying OpenStack on Kubernetes. Mirror of…

Helm charts for deploying OpenStack on Kubernetes. Mirror of code maintained at opendev.org. - openstack/openstack-helm

github.com

Mais c’est aussi le cas du projet open source Atmosphere du fournisseur Cloud Vexxhost qui fournit un large éventail de fonctionnalités d’infrastructure, notamment des machines virtuelles, Kubernetes, du bare metal, du stockage en bloc et en objet, des équilibreurs de charge en tant que service, et plus encore …

Atmosphere deployment tool | VEXXHOST

Use the latest deployment tool to get a fully integrated OpenStack environment

vexxhost.com

Atmosphere fait tourner OpenStack au-dessus de Kubernetes. Cette configuration permet des déploiements, des mises à niveau et des contrôles de santé simples et facile.

VEXXHOST Launches Atmosphere, a New Open Source, OpenStack Deployment Tool

VEXXHOST launched Atmosphere a new tool that can deploy fully integrated OpenStack clouds. The company has made it open…

vexxhost.com

GitHub - vexxhost/atmosphere: Simple & easy private cloud platform featuring VMs, Kubernetes &…

Simple & easy private cloud platform featuring VMs, Kubernetes & bare-metal - vexxhost/atmosphere

github.com

Je vais simplement suivre le modus operandi proposé par Vexxhost pour un serveur Bare Metal :

Quick Start - Atmosphere 1.10.4.post231.dev0+f2e3b279 documentation

There are several ways that you can quickly get started with Atmosphere to explore it's capabilities. This section…

vexxhost.github.io

OpenStack sur LXD avec Juju et k3sup dans phoenixNAP …

La plate-forme cloud bare metal de phoenixNAP est sortie de la version Beta le mois dernier. L’offre Bare Metal Cloud…

deep75.medium.com

“OpenStack on LXD” et “k0s” dans un serveur Bare Metal ARM 64 Bits d’AWS …

Amazon a développé des processeurs AWS Graviton optimisés pour les applications en nuage et offrant des optimisations…

deep75.medium.com

Créer simplement un cluster k8s dans PhoenixNAP avec Rancher en quelques clics ...

https://deep75.medium.com/cr%C3%A9er-simplement-un-cluster-k8s-dans-phoenixnap-avec-rancher-en-quel... Tagged with…

dev.to

Pour cela je pars d’un serveur dans PhoenixNAP sous Ubuntu 22.04 LTS :

Mise à jour de ce dernier et installation des paquets nécessaires au lancement du déploiement d’Atmosphere :

ubuntu@atmosphere:~$ sudo apt-get update && sudo apt-get install git python3-pip -y && sudo pip install poetry

ubuntu@atmosphere:~$ git clone https://github.com/vexxhost/atmosphere.git
Cloning into 'atmosphere'...
remote: Enumerating objects: 25111, done.
remote: Counting objects: 100% (825/825), done.
remote: Compressing objects: 100% (398/398), done.
remote: Total 25111 (delta 377), reused 704 (delta 306), pack-reused 24286
Receiving objects: 100% (25111/25111), 10.78 MiB | 50.17 MiB/s, done.
Resolving deltas: 100% (14299/14299), done.
ubuntu@atmosphere:~$ cd atmosphere/
ubuntu@atmosphere:~/atmosphere$ ls
CHANGELOG.md  Jenkinsfile  build   doc         galaxy.yml  hack      meta        playbooks    pyproject.toml              test-requirements.txt  tox.ini
Dockerfile    README.md    charts  flake.lock  go.mod      images    mkdocs.yml  plugins      release-please-config.json  tests                  zuul.d
Earthfile     atmosphere   cmd     flake.nix   go.sum      internal  molecule    poetry.lock  roles                       tools
ubuntu@atmosphere:~/atmosphere$ sudo poetry install --with dev
Creating virtualenv atmosphere-NEvTTHEY-py3.10 in /root/.cache/pypoetry/virtualenvs
Installing dependencies from lock file

Package operations: 89 installs, 0 updates, 0 removals

  - Installing attrs (23.2.0)
  - Installing pycparser (2.22)
  - Installing rpds-py (0.18.0)
  - Installing cffi (1.16.0)
  - Installing markupsafe (2.1.5)
  - Installing mdurl (0.1.2)
  - Installing referencing (0.35.0)
  - Installing cryptography (42.0.5)
  - Installing jinja2 (3.1.3)
  - Installing jsonschema-specifications (2023.12.1)
  - Installing markdown-it-py (3.0.0)
  - Installing packaging (24.0)
  - Installing pbr (6.0.0)
  - Installing pygments (2.17.2)
  - Installing pyyaml (6.0.1)
  - Installing resolvelib (1.0.1)
  - Installing wrapt (1.16.0)
  - Installing ansible-core (2.16.6)
  - Installing bracex (2.4)
  - Installing certifi (2024.2.2)
  - Installing charset-normalizer (3.3.2)
  - Installing click (8.1.7)
  - Installing debtcollector (3.0.0)
  - Installing idna (3.7)
  - Installing iso8601 (2.1.0)
  - Installing jsonschema (4.21.1)
  - Installing netaddr (0.8.0)
  - Installing netifaces (0.11.0)
  - Installing oslo-i18n (6.3.0)
  - Installing pyparsing (3.1.2)
  - Installing rich (13.7.1)
  - Installing subprocess-tee (0.4.1)
  - Installing tzdata (2024.1)
  - Installing urllib3 (2.2.1)
  - Installing ansible-compat (4.1.11)
  - Installing click-help-colors (0.9.4)
  - Installing decorator (5.1.1)
  - Installing distro (1.9.0)
  - Installing enrich (1.2.7)
  - Installing exceptiongroup (1.2.1)
  - Installing iniconfig (2.0.0)
  - Installing jsonpointer (2.4)
  - Installing mccabe (0.7.0)
  - Installing msgpack (1.0.8)
  - Installing os-service-types (1.7.0)
  - Installing oslo-utils (7.1.0)
  - Installing pluggy (1.5.0)
  - Installing pycodestyle (2.9.1)
  - Installing pyflakes (2.5.0)
  - Installing requests (2.31.0)
  - Installing rfc3986 (2.0.0)
  - Installing six (1.16.0)
  - Installing stevedore (5.2.0)
  - Installing tomli (2.0.1)
  - Installing typing-extensions (4.11.0)
  - Installing wcmatch (8.5.1)
  - Installing appdirs (1.4.4)
  - Installing coverage (7.5.0)
  - Installing docker (7.0.0)
  - Installing dogpile-cache (1.3.2)
  - Installing execnet (2.1.1)
  - Installing flake8 (5.0.4)
  - Installing isort (5.13.2)
  - Installing jmespath (1.0.1)
  - Installing jsonpatch (1.33)
  - Installing keystoneauth1 (5.6.0)
  - Installing molecule (6.0.3)
  - Installing munch (4.0.0)
  - Installing oslo-config (9.4.0)
  - Installing oslo-context (5.5.0)
  - Installing oslo-serialization (5.4.0)
  - Installing py (1.11.0)
  - Installing pyinotify (0.9.6)
  - Installing pytest (7.4.4)
  - Installing python-dateutil (2.9.0.post0)
  - Installing regex (2024.4.28)
  - Installing requestsexceptions (1.4.0)
  - Installing selinux (0.3.0)
  - Installing docker-image-py (0.1.12)
  - Installing flake8-isort (4.2.0)
  - Installing molecule-plugins (23.5.3)
  - Installing openstacksdk (0.62.0)
  - Installing oslo-log (5.5.1)
  - Installing pytest-cov (3.0.0)
  - Installing pytest-forked (1.6.0)
  - Installing pytest-mock (3.14.0)
  - Installing pytest-xdist (3.6.1)
  - Installing rjsonnet (0.5.4)
  - Installing ruyaml (0.91.0)

Installing the current project: atmosphere (1.10.4.post186.dev0+779cb921)

Très rapidement, je lance le déploiement qui prend un peu moins d’une heure ici :

ubuntu@atmosphere:~/atmosphere$ sudo poetry run molecule converge -s aio
INFO     aio scenario test matrix: dependency, create, prepare, converge
INFO     Performing prerun with role_name_check=0...
INFO     Running aio > dependency
WARNING  Skipping, missing the requirements file.
WARNING  Skipping, missing the requirements file.
INFO     Running aio > create

PLAY [Wait for user to read warning] *******************************************

TASK [Gathering Facts] *********************************************************
Monday 03 June 2024  12:02:39 +0000 (0:00:00.020)       0:00:00.020 ***********
ok: [localhost]
.
.
.
.
.
PLAY [Configure networking] ****************************************************

TASK [Gathering Facts] *********************************************************
Monday 03 June 2024  12:49:26 +0000 (0:00:00.418)       0:45:34.621 ***********
ok: [instance]

TASK [Add IP address to "br-ex"] ***********************************************
Monday 03 June 2024  12:49:28 +0000 (0:00:02.159)       0:45:36.781 ***********
ok: [instance]

TASK [Set "br-ex" interface to "up"] *******************************************
Monday 03 June 2024  12:49:28 +0000 (0:00:00.153)       0:45:36.934 ***********
ok: [instance]

PLAY RECAP *********************************************************************
instance                   : ok=669  changed=267  unreachable=0    failed=0    skipped=246  rescued=0    ignored=1   

Monday 03 June 2024  12:49:28 +0000 (0:00:00.304)       0:45:37.239 ***********
===============================================================================
vexxhost.atmosphere.percona_xtradb_cluster : Apply Percona XtraDB cluster - 203.51s
vexxhost.atmosphere.cinder : Deploy Helm chart ------------------------ 157.84s
vexxhost.atmosphere.keycloak : Deploy Helm chart ---------------------- 156.65s
vexxhost.atmosphere.heat : Deploy Helm chart -------------------------- 120.67s
vexxhost.atmosphere.manila : Deploy Helm chart ------------------------ 104.84s
vexxhost.atmosphere.nova : Deploy Helm chart -------------------------- 100.67s
vexxhost.ceph.osd : Install OSDs --------------------------------------- 89.67s
vexxhost.atmosphere.glance : Deploy Helm chart ------------------------- 88.95s
vexxhost.atmosphere.magnum : Deploy Helm chart ------------------------- 88.06s
vexxhost.atmosphere.octavia : Deploy Helm chart ------------------------ 83.51s
vexxhost.atmosphere.keystone : Deploy Helm chart ----------------------- 80.67s
vexxhost.atmosphere.neutron : Deploy Helm chart ------------------------ 74.13s
vexxhost.atmosphere.barbican : Deploy Helm chart ----------------------- 67.48s
vexxhost.ceph.mon : Run Bootstrap coomand ------------------------------ 62.21s
vexxhost.atmosphere.placement : Deploy Helm chart ---------------------- 58.82s
vexxhost.kubernetes.cluster_api : Set node selector for Cluster API components -- 57.15s
vexxhost.atmosphere.glance_image : Download image ---------------------- 53.93s
vexxhost.atmosphere.glance_image : Check if image exists --------------- 50.38s
vexxhost.atmosphere.neutron : Create networks -------------------------- 36.62s
vexxhost.atmosphere.rabbitmq : Deploy cluster -------------------------- 35.65s

Le cluster est déployé et je peux vérifier les accès disponibles localement sur ce serveur physique :

root@instance:~# apt install python3-openstackclient -y

root@instance:~# source openrc
root@instance:~# openstack endpoint list
+----------------------------------+-----------+--------------+-----------------+---------+-----------+------------------------------------------------------------------------------+
| ID                               | Region    | Service Name | Service Type    | Enabled | Interface | URL                                                                          |
+----------------------------------+-----------+--------------+-----------------+---------+-----------+------------------------------------------------------------------------------+
| 0584539654844f7f956088e43836ed4c | RegionOne | swift        | object-store    | True    | public    | https://object-store.131-153-200-197.nip.io/swift/v1/%(tenant_id)s           |
| 069df7eb37584d91a22a95e7d36493d3 | RegionOne | manila       | share           | True    | internal  | http://manila-api.openstack.svc.cluster.local:8786/v1                        |
| 08b5e9b96ddf4ce79f270f582dc6bf7b | RegionOne | manilav2     | sharev2         | True    | public    | https://share.131-153-200-197.nip.io/v2                                      |
| 0b95720b8c0e4de692acf18b769ce8be | RegionOne | heat-cfn     | cloudformation  | True    | admin     | http://heat-cfn.openstack.svc.cluster.local:8000/v1                          |
| 120958efeb924a0a98bf03ce807c0ace | RegionOne | cinderv3     | volumev3        | True    | internal  | http://cinder-api.openstack.svc.cluster.local:8776/v3/%(tenant_id)s          |
| 1427e413681e4518ac03d768bb44cb60 | RegionOne | placement    | placement       | True    | admin     | http://placement-api.openstack.svc.cluster.local:8778/                       |
| 1611e222d7b8447596aa44c0965aec1a | RegionOne | cinderv3     | volumev3        | True    | public    | https://volume.131-153-200-197.nip.io/v3/%(tenant_id)s                       |
| 19047158ec1446b5b746682bc8d9dd93 | RegionOne | heat-cfn     | cloudformation  | True    | internal  | http://heat-cfn.openstack.svc.cluster.local:8000/v1                          |
| 1e04bacc8aae44b3818de40e386cf68e | RegionOne | barbican     | key-manager     | True    | admin     | http://barbican-api.openstack.svc.cluster.local:9311/                        |
| 27d7b0d81a104b54a3dcb8632297707f | RegionOne | keystone     | identity        | True    | admin     | http://keystone-api.openstack.svc.cluster.local:5000/                        |
| 2c4218a3da784f98890bcb6ac6cb20ae | RegionOne | heat         | orchestration   | True    | admin     | http://heat-api.openstack.svc.cluster.local:8004/v1/%(project_id)s           |
| 2f19518bd66c421eb6a5e25f7c93c96e | RegionOne | manila       | share           | True    | public    | http://manila.openstack.svc.cluster.local/v1                                 |
| 3578d37453854cfbafdc18f2be4f0a62 | RegionOne | glance       | image           | True    | public    | https://image.131-153-200-197.nip.io/                                        |
| 3a2e106afdbf43689676c85718319f88 | RegionOne | glance       | image           | True    | admin     | http://glance-api.openstack.svc.cluster.local:9292/                          |
| 3e3240df5df847bc84c204e0b18783f1 | RegionOne | glance       | image           | True    | internal  | http://glance-api.openstack.svc.cluster.local:9292/                          |
| 3f51c888203c433ea31d2ca67cf3e359 | RegionOne | manilav2     | sharev2         | True    | admin     | http://manila-api.openstack.svc.cluster.local:8786/v2                        |
| 44f08551b541410d8bb28b3a148dca0f | RegionOne | heat         | orchestration   | True    | internal  | http://heat-api.openstack.svc.cluster.local:8004/v1/%(project_id)s           |
| 6501cca34cd5401d8561522f062ec126 | RegionOne | magnum       | container-infra | True    | internal  | http://magnum-api.openstack.svc.cluster.local:9511/v1                        |
| 65c4f687017d4ff4b774a61cd670de52 | RegionOne | barbican     | key-manager     | True    | public    | https://key-manager.131-153-200-197.nip.io/                                  |
| 695342e32bf84ae48cc0c873227ce1ce | RegionOne | heat         | orchestration   | True    | public    | https://orchestration.131-153-200-197.nip.io/v1/%(project_id)s               |
| 71af00dd937e49c28827dadbe6d55bbe | RegionOne | swift        | object-store    | True    | internal  | http://rook-ceph-rgw-ceph.openstack.svc.cluster.local/swift/v1/%(tenant_id)s |
| 7ada3efd05b64af1ae726d495fe61a6e | RegionOne | cinderv3     | volumev3        | True    | admin     | http://cinder-api.openstack.svc.cluster.local:8776/v3/%(tenant_id)s          |
| 87e74af69cbb4577b4dd29d106aed5fa | RegionOne | magnum       | container-infra | True    | public    | https://container-infra.131-153-200-197.nip.io/v1                            |
| 8dae31f3eed946eea30025e56fbfd83a | RegionOne | nova         | compute         | True    | admin     | http://nova-api.openstack.svc.cluster.local:8774/v2.1                        |
| 8e562226dccc4df0af3c8cdfdec95084 | RegionOne | barbican     | key-manager     | True    | internal  | http://barbican-api.openstack.svc.cluster.local:9311/                        |
| 8f629f7e748d4c3087bf17aaa0ce2e47 | RegionOne | manila       | share           | True    | admin     | http://manila-api.openstack.svc.cluster.local:8786/v1                        |
| 91149164a0584145b6344ae1d525457b | RegionOne | keystone     | identity        | True    | public    | https://identity.131-153-200-197.nip.io/                                     |
| a936e3ca42a54b6e97672f20e17c095b | RegionOne | neutron      | network         | True    | admin     | http://neutron-server.openstack.svc.cluster.local:9696/                      |
| b987ba9af66c4a14ba42d1fd8c1b2285 | RegionOne | placement    | placement       | True    | public    | https://placement.131-153-200-197.nip.io/                                    |
| b9e2e43e90d649d5b6089c7474ba30cd | RegionOne | octavia      | load-balancer   | True    | internal  | http://octavia-api.openstack.svc.cluster.local:9876/                         |
| bf2839c099f946e39d21a0b6bcad0b87 | RegionOne | neutron      | network         | True    | public    | https://network.131-153-200-197.nip.io/                                      |
| bf959da766554e91972fe1da9cff6d8e | RegionOne | heat-cfn     | cloudformation  | True    | public    | https://cloudformation.131-153-200-197.nip.io/v1                             |
| d027a62b34ca4eaabc508c04ad8f94e7 | RegionOne | magnum       | container-infra | True    | admin     | http://magnum-api.openstack.svc.cluster.local:9511/v1                        |
| d3e857109be14bfabf82e962068b54af | RegionOne | nova         | compute         | True    | public    | https://compute.131-153-200-197.nip.io/v2.1                                  |
| d6985c01aca54ec49e0ec1c728fc271b | RegionOne | nova         | compute         | True    | internal  | http://nova-api.openstack.svc.cluster.local:8774/v2.1                        |
| d74feae56d034bd7ad421e4588f0731e | RegionOne | octavia      | load-balancer   | True    | admin     | http://octavia-api.openstack.svc.cluster.local:9876/                         |
| e7bcb22c547e41489cc7d5732bca4a84 | RegionOne | manilav2     | sharev2         | True    | internal  | http://manila-api.openstack.svc.cluster.local:8786/v2                        |
| f005b62e7769497eb54b0c0a3fa3c587 | RegionOne | octavia      | load-balancer   | True    | public    | https://load-balancer.131-153-200-197.nip.io/                                |
| f40bb006a4984428b581042a78539ef8 | RegionOne | neutron      | network         | True    | internal  | http://neutron-server.openstack.svc.cluster.local:9696/                      |
| f4d8af60368645c7a5f1d9605afb5494 | RegionOne | placement    | placement       | True    | internal  | http://placement-api.openstack.svc.cluster.local:8778/                       |
| f5aa8f8ba519480199f224800480e8cb | RegionOne | keystone     | identity        | True    | internal  | http://keystone-api.openstack.svc.cluster.local:5000/                        |
+----------------------------------+-----------+--------------+-----------------+---------+-----------+------------------------------------------------------------------------------+

Ainsi que des accès via l’Ingress Controller du cluster Kubernetes sous-jacent :

root@instance:~# kubectl cluster-info
Kubernetes control plane is running at https://10.96.240.10:6443
CoreDNS is running at https://10.96.240.10:6443/api/v1/namespaces/kube-system/services/kube-dns:dns/proxy

To further debug and diagnose cluster problems, use 'kubectl cluster-info dump'.
root@instance:~# kubectl get nodes -o wide
NAME       STATUS   ROLES           AGE   VERSION   INTERNAL-IP       EXTERNAL-IP   OS-IMAGE             KERNEL-VERSION       CONTAINER-RUNTIME
instance   Ready    control-plane   60m   v1.28.4   131.153.200.197   <none>        Ubuntu 22.04.4 LTS   5.15.0-105-generic   containerd://1.7.9
root@instance:~# kubectl get ing -A
NAMESPACE     NAME                                 CLASS        HOSTS                                             ADDRESS        PORTS     AGE
auth-system   keycloak                             atmosphere   keycloak.131-153-200-197.nip.io                   10.98.36.135   80, 443   54m
monitoring    kube-prometheus-stack-alertmanager   atmosphere   alertmanager.131-153-200-197.nip.io               10.98.36.135   80, 443   53m
monitoring    kube-prometheus-stack-grafana        atmosphere   grafana.131-153-200-197.nip.io                    10.98.36.135   80, 443   53m
monitoring    kube-prometheus-stack-prometheus     atmosphere   prometheus.131-153-200-197.nip.io                 10.98.36.135   80, 443   53m
openstack     cloudformation                       atmosphere   cloudformation.131-153-200-197.nip.io             10.98.36.135   80, 443   33m
openstack     compute                              atmosphere   compute.131-153-200-197.nip.io                    10.98.36.135   80, 443   38m
openstack     compute-novnc-proxy                  atmosphere   vnc.131-153-200-197.nip.io                        10.98.36.135   80, 443   38m
openstack     container-infra                      atmosphere   container-infra.131-153-200-197.nip.io            10.98.36.135   80, 443   27m
openstack     container-infra-registry             atmosphere   container-infra-registry.131-153-200-197.nip.io   10.98.36.135   80, 443   27m
openstack     dashboard                            atmosphere   dashboard.131-153-200-197.nip.io                  10.98.36.135   80, 443   23m
openstack     identity                             atmosphere   identity.131-153-200-197.nip.io                   10.98.36.135   80, 443   51m
openstack     image                                atmosphere   image.131-153-200-197.nip.io                      10.98.36.135   80, 443   46m
openstack     key-manager                          atmosphere   key-manager.131-153-200-197.nip.io                10.98.36.135   80, 443   49m
openstack     load-balancer                        atmosphere   load-balancer.131-153-200-197.nip.io              10.98.36.135   80, 443   30m
openstack     network                              atmosphere   network.131-153-200-197.nip.io                    10.98.36.135   80, 443   36m
openstack     orchestration                        atmosphere   orchestration.131-153-200-197.nip.io              10.98.36.135   80, 443   33m
openstack     placement                            atmosphere   placement.131-153-200-197.nip.io                  10.98.36.135   80, 443   41m
openstack     rook-ceph-cluster                    atmosphere   object-store.131-153-200-197.nip.io               10.98.36.135   80, 443   48m
openstack     sharev2                              atmosphere   share.131-153-200-197.nip.io                      10.98.36.135   80, 443   23m
openstack     volumev3                             atmosphere   volume.131-153-200-197.nip.io                     10.98.36.135   80, 443   42m

Le domaine WildCard utilisé ici me donne accès au Dashboard Horizon pour plus de simplicité :

Je charge une image locale d’Ubuntu 24.04 LTS dans le cluster :

root@instance:~# cat openrc 
# Ansible managed: Do NOT edit this file manually!

export OS_IDENTITY_API_VERSION=3

export OS_AUTH_URL="https://identity.131-153-200-197.nip.io/v3"
export OS_AUTH_TYPE=password
export OS_REGION_NAME="RegionOne"
export OS_USER_DOMAIN_NAME=Default
export OS_USERNAME="admin-RegionOne"
export OS_PASSWORD="lzi232PTaHpzoC2HjwSLKepZELQd6ENJ"
export OS_PROJECT_DOMAIN_NAME=Default
export OS_PROJECT_NAME=admin

export OS_CACERT=/usr/local/share/ca-certificates/atmosphere.crt
root@instance:~# wget -c https://cloud-images.ubuntu.com/noble/current/noble-server-cloudimg-amd64.img

Saving to: ‘noble-server-cloudimg-amd64.img’

noble-server-cloudimg-amd64.img                 100%[=====================================================================================================>] 454.00M  17.9MB/s    in 30s     

2024-06-03 13:22:40 (15.3 MB/s) - ‘noble-server-cloudimg-amd64.img’ saved [476053504/476053504]

root@instance:~# openstack image create --public --container-format bare --disk-format qcow2 --file ~/noble-server-cloudimg-amd64.img ubuntu-24.04
+------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Field            | Value                                                                                                                                                            |
+------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| container_format | bare                                                                                                                                                             |
| created_at       | 2024-06-03T13:23:12Z                                                                                                                                             |
| disk_format      | qcow2                                                                                                                                                            |
| file             | /v2/images/81d8eafa-4054-455c-9640-4e83c0566d21/file                                                                                                             |
| id               | 81d8eafa-4054-455c-9640-4e83c0566d21                                                                                                                             |
| min_disk         | 0                                                                                                                                                                |
| min_ram          | 0                                                                                                                                                                |
| name             | ubuntu-24.04                                                                                                                                                     |
| owner            | 43321f42e8434f8aa53531bd104e2809                                                                                                                                 |
| properties       | locations='[]', os_hidden='False', owner_specified.openstack.md5='', owner_specified.openstack.object='images/ubuntu-24.04', owner_specified.openstack.sha256='' |
| protected        | False                                                                                                                                                            |
| schema           | /v2/schemas/image                                                                                                                                                |
| status           | queued                                                                                                                                                           |
| tags             |                                                                                                                                                                  |
| updated_at       | 2024-06-03T13:23:12Z                                                                                                                                             |
| visibility       | public                                                                                                                                                           |
+------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------+

root@instance:~# openstack image list
+--------------------------------------+---------------------------+--------+
| ID                                   | Name                      | Status |
+--------------------------------------+---------------------------+--------+
| 04e2f39a-e4ff-426b-aeee-b82acd3bf611 | amphora-x64-haproxy       | active |
| 49a3b09d-c191-4c36-8541-31efaffb404d | cirros                    | active |
| b7e75cdb-37b0-4f2a-badf-cfdee7bca83d | manila-service-image      | active |
| 3c5df46c-7015-411c-8009-afa6695672a6 | ubuntu-2204-kube-v1.27.8s | active |
| 81d8eafa-4054-455c-9640-4e83c0566d21 | ubuntu-24.04              | active |
+--------------------------------------+---------------------------+--------+

Configuration d’une topologie réseau pour un rapide test :

Avec l’image chargée dans Glance, lancement de trois petites instances Ubuntu 24.04 LTS …

root@instance:~# openstack server list
+--------------------------------------+-------+--------+--------------------------------------+--------------+----------+
| ID                                   | Name  | Status | Networks                             | Image        | Flavor   |
+--------------------------------------+-------+--------+--------------------------------------+--------------+----------+
| 07d6bf6e-edff-4729-9133-31849ea6fe87 | k0s-3 | ACTIVE | network1=10.96.250.216, 11.12.13.185 | ubuntu-24.04 | m1.small |
| afd10cda-f99c-4877-9948-a7f25b5e756a | k0s-1 | ACTIVE | network1=10.96.250.211, 11.12.13.99  | ubuntu-24.04 | m1.small |
| d70230a1-9fdf-40d9-959d-c9960479b4a5 | k0s-2 | ACTIVE | network1=10.96.250.208, 11.12.13.80  | ubuntu-24.04 | m1.small |
+--------------------------------------+-------+--------+--------------------------------------+--------------+----------+

Un cluster kubernetes simple sur la base de ces trois instances est alors possible avec k0sctl.

GitHub - k0sproject/k0sctl: A bootstrapping and management tool for k0s clusters.

A bootstrapping and management tool for k0s clusters. - k0sproject/k0sctl

github.com

root@instance:~# wget -c https://github.com/k0sproject/k0sctl/releases/download/v0.17.8/k0sctl-linux-x64
root@instance:~# mv k0sctl-linux-x64 /usr/local/bin/k0sctl && chmod +x /usr/local/bin/k0sctl 
root@instance:~# k0sctl
NAME:
   k0sctl - k0s cluster management tool

USAGE:
   k0sctl [global options] command [command options] 

COMMANDS:
   version     Output k0sctl version
   apply       Apply a k0sctl configuration
   kubeconfig  Output the admin kubeconfig of the cluster
   init        Create a configuration template
   reset       Remove traces of k0s from all of the hosts
   backup      Take backup of existing clusters state
   config      Configuration related sub-commands
   completion  
   help, h     Shows a list of commands or help for one command

GLOBAL OPTIONS:
   --debug, -d  Enable debug logging (default: false) [$DEBUG]
   --trace      Enable trace logging (default: false) [$TRACE]
   --no-redact  Do not hide sensitive information in the output (default: false)
   --help, -h   show help
root@instance:~# k0sctl init --k0s > k0sctl.yaml

root@instance:~# cat k0sctl.yaml 
apiVersion: k0sctl.k0sproject.io/v1beta1
kind: Cluster
metadata:
  name: k0s-cluster
spec:
  hosts:
  - ssh:
      address: 10.96.250.211
      user: ubuntu
      port: 22
      keyPath: /root/.ssh/id_rsa
    role: controller
  - ssh:
      address: 10.96.250.208
      user: ubuntu
      port: 22
      keyPath: /root/.ssh/id_rsa
    role: worker
  - ssh:
      address: 10.96.250.216
      user: ubuntu
      port: 22
      keyPath: /root/.ssh/id_rsa
    role: worker
  k0s:
    config:
      apiVersion: k0s.k0sproject.io/v1beta1
      kind: Cluster
      metadata:
        name: k0s
      spec:
        api:
          k0sApiPort: 9443
          port: 6443
        installConfig:
          users:
            etcdUser: etcd
            kineUser: kube-apiserver
            konnectivityUser: konnectivity-server
            kubeAPIserverUser: kube-apiserver
            kubeSchedulerUser: kube-scheduler
        konnectivity:
          adminPort: 8133
          agentPort: 8132
        network:
          kubeProxy:
            disabled: false
            mode: iptables
          kuberouter:
            autoMTU: true
            mtu: 0
            peerRouterASNs: ""
            peerRouterIPs: ""
          podCIDR: 10.244.0.0/16
          provider: kuberouter
          serviceCIDR: 10.96.0.0/12
        podSecurityPolicy:
          defaultPolicy: 00-k0s-privileged
        storage:
          type: etcd
        telemetry:
          enabled: true
root@instance:~# k0sctl apply --config k0sctl.yaml 

⠀⣿⣿⡇⠀⠀⢀⣴⣾⣿⠟⠁⢸⣿⣿⣿⣿⣿⣿⣿⡿⠛⠁⠀⢸⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⠀█████████ █████████ ███
⠀⣿⣿⡇⣠⣶⣿⡿⠋⠀⠀⠀⢸⣿⡇⠀⠀⠀⣠⠀⠀⢀⣠⡆⢸⣿⣿⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀███          ███    ███
⠀⣿⣿⣿⣿⣟⠋⠀⠀⠀⠀⠀⢸⣿⡇⠀⢰⣾⣿⠀⠀⣿⣿⡇⢸⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⠀███          ███    ███
⠀⣿⣿⡏⠻⣿⣷⣤⡀⠀⠀⠀⠸⠛⠁⠀⠸⠋⠁⠀⠀⣿⣿⡇⠈⠉⠉⠉⠉⠉⠉⠉⠉⢹⣿⣿⠀███          ███    ███
⠀⣿⣿⡇⠀⠀⠙⢿⣿⣦⣀⠀⠀⠀⣠⣶⣶⣶⣶⣶⣶⣿⣿⡇⢰⣶⣶⣶⣶⣶⣶⣶⣶⣾⣿⣿⠀█████████    ███    ██████████
k0sctl v0.17.8 Copyright 2023, k0sctl authors.
Anonymized telemetry of usage will be sent to the authors.
By continuing to use k0sctl you agree to these terms:
https://k0sproject.io/licenses/eula
INFO ==> Running phase: Set k0s version  
INFO Looking up latest stable k0s version         
INFO Using k0s version v1.30.1+k0s.0              
INFO ==> Running phase: Connect to hosts 
INFO [ssh] 10.96.250.216:22: connected            
INFO [ssh] 10.96.250.208:22: connected            
INFO [ssh] 10.96.250.211:22: connected            
INFO ==> Running phase: Detect host operating systems 
INFO [ssh] 10.96.250.216:22: is running Ubuntu 24.04 LTS 
INFO [ssh] 10.96.250.208:22: is running Ubuntu 24.04 LTS 
INFO [ssh] 10.96.250.211:22: is running Ubuntu 24.04 LTS 
INFO ==> Running phase: Acquire exclusive host lock 
INFO ==> Running phase: Prepare hosts    
INFO ==> Running phase: Gather host facts 
INFO [ssh] 10.96.250.216:22: using k0s-3 as hostname 
INFO [ssh] 10.96.250.211:22: using k0s-1 as hostname 
INFO [ssh] 10.96.250.208:22: using k0s-2 as hostname 
INFO [ssh] 10.96.250.211:22: discovered ens3 as private interface 
INFO [ssh] 10.96.250.208:22: discovered ens3 as private interface 
INFO [ssh] 10.96.250.216:22: discovered ens3 as private interface 
INFO [ssh] 10.96.250.211:22: discovered 11.12.13.99 as private address 
INFO [ssh] 10.96.250.208:22: discovered 11.12.13.80 as private address 
INFO [ssh] 10.96.250.216:22: discovered 11.12.13.185 as private address 
INFO ==> Running phase: Validate hosts   
INFO ==> Running phase: Validate facts   
INFO ==> Running phase: Download k0s on hosts 
INFO [ssh] 10.96.250.216:22: downloading k0s v1.30.1+k0s.0 
INFO [ssh] 10.96.250.211:22: downloading k0s v1.30.1+k0s.0 
INFO [ssh] 10.96.250.208:22: downloading k0s v1.30.1+k0s.0 
INFO ==> Running phase: Install k0s binaries on hosts 
INFO [ssh] 10.96.250.211:22: validating configuration 
INFO ==> Running phase: Configure k0s    
INFO [ssh] 10.96.250.211:22: installing new configuration 
INFO ==> Running phase: Initialize the k0s cluster 
INFO [ssh] 10.96.250.211:22: installing k0s controller 
INFO [ssh] 10.96.250.211:22: waiting for the k0s service to start 
INFO [ssh] 10.96.250.211:22: waiting for kubernetes api to respond 
INFO ==> Running phase: Install workers  
INFO [ssh] 10.96.250.216:22: validating api connection to https://11.12.13.99:6443 
INFO [ssh] 10.96.250.208:22: validating api connection to https://11.12.13.99:6443 
INFO [ssh] 10.96.250.211:22: generating a join token for worker 1 
INFO [ssh] 10.96.250.211:22: generating a join token for worker 2 
INFO [ssh] 10.96.250.216:22: writing join token   
INFO [ssh] 10.96.250.208:22: writing join token   
INFO [ssh] 10.96.250.216:22: installing k0s worker 
INFO [ssh] 10.96.250.208:22: installing k0s worker 
INFO [ssh] 10.96.250.216:22: starting service     
INFO [ssh] 10.96.250.216:22: waiting for node to become ready 
INFO [ssh] 10.96.250.208:22: starting service     
INFO [ssh] 10.96.250.208:22: waiting for node to become ready 
INFO ==> Running phase: Release exclusive host lock 
INFO ==> Running phase: Disconnect from hosts 
INFO ==> Finished in 42s                 
INFO k0s cluster version v1.30.1+k0s.0 is now installed 
INFO Tip: To access the cluster you can now fetch the admin kubeconfig using: 
INFO      k0sctl kubeconfig

Kubernetes via k0s est actif et accessible via son fichier kubeconfigspécifique :

root@instance:~# k0sctl kubeconfig > kubeconfig
root@instance:~# kubectl --kubeconfig=kubeconfig cluster-info
Kubernetes control plane is running at https://10.96.250.211:6443
CoreDNS is running at https://10.96.250.211:6443/api/v1/namespaces/kube-system/services/kube-dns:dns/proxy

To further debug and diagnose cluster problems, use 'kubectl cluster-info dump'.
root@instance:~# kubectl --kubeconfig=kubeconfig get nodes -o wide
NAME    STATUS   ROLES    AGE     VERSION       INTERNAL-IP    EXTERNAL-IP   OS-IMAGE           KERNEL-VERSION     CONTAINER-RUNTIME
k0s-2   Ready    <none>   2m41s   v1.30.1+k0s   11.12.13.80    <none>        Ubuntu 24.04 LTS   6.8.0-31-generic   containerd://1.7.17
k0s-3   Ready    <none>   2m41s   v1.30.1+k0s   11.12.13.185   <none>        Ubuntu 24.04 LTS   6.8.0-31-generic   containerd://1.7.17
root@instance:~# kubectl --kubeconfig=kubeconfig get po,svc -A
NAMESPACE     NAME                                  READY   STATUS    RESTARTS   AGE
kube-system   pod/coredns-6997b8f8bd-957bd          1/1     Running   0          2m41s
kube-system   pod/coredns-6997b8f8bd-ddr5t          1/1     Running   0          2m41s
kube-system   pod/konnectivity-agent-2bxgl          1/1     Running   0          2m51s
kube-system   pod/konnectivity-agent-4gfsw          1/1     Running   0          2m51s
kube-system   pod/kube-proxy-2cq5w                  1/1     Running   0          2m51s
kube-system   pod/kube-proxy-m6rnv                  1/1     Running   0          2m51s
kube-system   pod/kube-router-p9s4t                 1/1     Running   0          2m51s
kube-system   pod/kube-router-qhcp4                 1/1     Running   0          2m51s
kube-system   pod/metrics-server-5cd4986bbc-rf4wc   1/1     Running   0          2m57s

NAMESPACE     NAME                     TYPE        CLUSTER-IP    EXTERNAL-IP   PORT(S)                  AGE
default       service/kubernetes       ClusterIP   10.96.0.1     <none>        443/TCP                  3m15s
kube-system   service/kube-dns         ClusterIP   10.96.0.10    <none>        53/UDP,53/TCP,9153/TCP   3m5s
kube-system   service/metrics-server   ClusterIP   10.97.91.41   <none>        443/TCP                  3m1s

Le démonstrateur FC en une commande (habituelle maintenant) :

root@instance:~# cat test.yaml 
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: fcdemo3
  labels:
    app: fcdemo3
spec:
  replicas: 4
  selector:
    matchLabels:
      app: fcdemo3
  template:
    metadata:
      labels:
        app: fcdemo3
    spec:
      containers:
      - name: fcdemo3
        image: mcas/franceconnect-demo2:latest
        ports:
        - containerPort: 3000
---
apiVersion: v1
kind: Service
metadata:
  name: fcdemo-service
spec:
  type: ClusterIP
  selector:
    app: fcdemo3
  ports:
  - protocol: TCP
    port: 80
    targetPort: 3000

root@instance:~# kubectl --kubeconfig=kubeconfig apply -f test.yaml
deployment.apps/fcdemo3 created
service/fcdemo-service created
root@instance:~# kubectl --kubeconfig=kubeconfig get po,svc
NAME                          READY   STATUS    RESTARTS   AGE
pod/fcdemo3-85f6bd87c-7jvpk   1/1     Running   0          13s
pod/fcdemo3-85f6bd87c-btv9m   1/1     Running   0          13s
pod/fcdemo3-85f6bd87c-nlw9x   1/1     Running   0          13s
pod/fcdemo3-85f6bd87c-v66bs   1/1     Running   0          13s

NAME                     TYPE        CLUSTER-IP     EXTERNAL-IP   PORT(S)   AGE
service/fcdemo-service   ClusterIP   10.98.123.24   <none>        80/TCP    13s
service/kubernetes       ClusterIP   10.96.0.1      <none>        443/TCP   8m19s

Redirection de port ici pour accès local à ce dernier …

root@instance:~# kubectl --kubeconfig=kubeconfig port-forward service/fcdemo-service 12222:80 --address='0.0.0.0'
Forwarding from 0.0.0.0:12222 -> 3000

Sachant qu’Atmosphere disposait de Magnum pour déployer un cluster Kubernetes intrinsèque …

Pour conclure, Atmosphere est un projet pour un déploiement simplifié d’un cluster Openstack conteneurisé dans un cluster Kubernetes de base (en reprenant OpenStack Helm) et que l’on retrouve également dans la nouvelle mouture de Canonical MicroStack par exemple …

OpenStack for the edge, micro clouds and developers

MicroStack delivers distilled OpenStack excellence with native K8s experience. OCI images, Kubernetes operators, lucid…

microstack.run

À suivre !

Kubernetes
Openstack
Phoenixnap
Cloud Computing
Docker

--

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Karim

Written by Karim

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