155 lines
7.3 KiB
Markdown
155 lines
7.3 KiB
Markdown
# Offline environment
|
|
|
|
In case your servers don't have access to the internet directly (for example
|
|
when deploying on premises with security constraints), you need to get the
|
|
following artifacts in advance from another environment where has access to the internet.
|
|
|
|
* Some static files (zips and binaries)
|
|
* OS packages (rpm/deb files)
|
|
* Container images used by Kubespray. Exhaustive list depends on your setup
|
|
* [Optional] Python packages used by Kubespray (only required if your OS doesn't provide all python packages/versions
|
|
listed in `requirements.txt`)
|
|
* [Optional] Helm chart files (only required if `helm_enabled=true`)
|
|
|
|
Then you need to setup the following services on your offline environment:
|
|
|
|
* an HTTP reverse proxy/cache/mirror to serve some static files (zips and binaries)
|
|
* an internal Yum/Deb repository for OS packages
|
|
* an internal container image registry that need to be populated with all container images used by Kubespray
|
|
* [Optional] an internal PyPi server for python packages used by Kubespray
|
|
* [Optional] an internal Helm registry for Helm chart files
|
|
|
|
You can get artifact lists with [generate_list.sh](/contrib/offline/generate_list.sh) script.
|
|
In addition, you can find some tools for offline deployment under [contrib/offline](/contrib/offline/README.md).
|
|
|
|
## Configure Inventory
|
|
|
|
Once all artifacts are accessible from your internal network, **adjust** the following variables
|
|
in [your inventory](/inventory/sample/group_vars/all/offline.yml) to match your environment:
|
|
|
|
```yaml
|
|
# Registry overrides
|
|
kube_image_repo: "{{ registry_host }}"
|
|
gcr_image_repo: "{{ registry_host }}"
|
|
docker_image_repo: "{{ registry_host }}"
|
|
quay_image_repo: "{{ registry_host }}"
|
|
github_image_repo: "{{ registry_host }}"
|
|
|
|
kubeadm_download_url: "{{ files_repo }}/kubernetes/{{ kube_version }}/kubeadm"
|
|
kubectl_download_url: "{{ files_repo }}/kubernetes/{{ kube_version }}/kubectl"
|
|
kubelet_download_url: "{{ files_repo }}/kubernetes/{{ kube_version }}/kubelet"
|
|
# etcd is optional if you **DON'T** use etcd_deployment=host
|
|
etcd_download_url: "{{ files_repo }}/kubernetes/etcd/etcd-{{ etcd_version }}-linux-{{ image_arch }}.tar.gz"
|
|
cni_download_url: "{{ files_repo }}/kubernetes/cni/cni-plugins-linux-{{ image_arch }}-{{ cni_version }}.tgz"
|
|
crictl_download_url: "{{ files_repo }}/kubernetes/cri-tools/crictl-{{ crictl_version }}-{{ ansible_system | lower }}-{{ image_arch }}.tar.gz"
|
|
# If using Calico
|
|
calicoctl_download_url: "{{ files_repo }}/kubernetes/calico/{{ calico_ctl_version }}/calicoctl-linux-{{ image_arch }}"
|
|
# If using Calico with kdd
|
|
calico_crds_download_url: "{{ files_repo }}/kubernetes/calico/{{ calico_version }}.tar.gz"
|
|
# Containerd
|
|
containerd_download_url: "{{ files_repo }}/containerd-{{ containerd_version }}-linux-{{ image_arch }}.tar.gz"
|
|
runc_download_url: "{{ files_repo }}/runc.{{ image_arch }}"
|
|
nerdctl_download_url: "{{ files_repo }}/nerdctl-{{ nerdctl_version }}-{{ ansible_system | lower }}-{{ image_arch }}.tar.gz"
|
|
# Insecure registries for containerd
|
|
containerd_registries_mirrors:
|
|
- prefix: "{{ registry_addr }}"
|
|
mirrors:
|
|
- host: "{{ registry_host }}"
|
|
capabilities: ["pull", "resolve"]
|
|
skip_verify: true
|
|
|
|
# CentOS/Redhat/AlmaLinux/Rocky Linux
|
|
## Docker / Containerd
|
|
docker_rh_repo_base_url: "{{ yum_repo }}/docker-ce/$releasever/$basearch"
|
|
docker_rh_repo_gpgkey: "{{ yum_repo }}/docker-ce/gpg"
|
|
|
|
# Fedora
|
|
## Docker
|
|
docker_fedora_repo_base_url: "{{ yum_repo }}/docker-ce/{{ ansible_distribution_major_version }}/{{ ansible_architecture }}"
|
|
docker_fedora_repo_gpgkey: "{{ yum_repo }}/docker-ce/gpg"
|
|
## Containerd
|
|
containerd_fedora_repo_base_url: "{{ yum_repo }}/containerd"
|
|
containerd_fedora_repo_gpgkey: "{{ yum_repo }}/docker-ce/gpg"
|
|
|
|
# Debian
|
|
## Docker
|
|
docker_debian_repo_base_url: "{{ debian_repo }}/docker-ce"
|
|
docker_debian_repo_gpgkey: "{{ debian_repo }}/docker-ce/gpg"
|
|
## Containerd
|
|
containerd_debian_repo_base_url: "{{ ubuntu_repo }}/containerd"
|
|
containerd_debian_repo_gpgkey: "{{ ubuntu_repo }}/containerd/gpg"
|
|
containerd_debian_repo_repokey: 'YOURREPOKEY'
|
|
|
|
# Ubuntu
|
|
## Docker
|
|
docker_ubuntu_repo_base_url: "{{ ubuntu_repo }}/docker-ce"
|
|
docker_ubuntu_repo_gpgkey: "{{ ubuntu_repo }}/docker-ce/gpg"
|
|
## Containerd
|
|
containerd_ubuntu_repo_base_url: "{{ ubuntu_repo }}/containerd"
|
|
containerd_ubuntu_repo_gpgkey: "{{ ubuntu_repo }}/containerd/gpg"
|
|
containerd_ubuntu_repo_repokey: 'YOURREPOKEY'
|
|
```
|
|
|
|
For the OS specific settings, just define the one matching your OS.
|
|
If you use the settings like the one above, you'll need to define in your inventory the following variables:
|
|
|
|
* `registry_host`: Container image registry. If you _don't_ use the same repository path for the container images that
|
|
the ones defined
|
|
in [kubesprays-defaults's role defaults](https://github.com/kubernetes-sigs/kubespray/blob/master/roles/kubespray-defaults/defaults/main/download.yml)
|
|
, you need to override the `*_image_repo` for these container images. If you want to make your life easier, use the
|
|
same repository path, you won't have to override anything else.
|
|
* `registry_addr`: Container image registry, but only have [domain or ip]:[port].
|
|
* `files_repo`: HTTP webserver or reverse proxy that is able to serve the files listed above. Path is not important, you
|
|
can store them anywhere as long as it's accessible by kubespray. It's recommended to use `*_version` in the path so
|
|
that you don't need to modify this setting everytime kubespray upgrades one of these components.
|
|
* `yum_repo`/`debian_repo`/`ubuntu_repo`: OS package repository depending on your OS, should point to your internal
|
|
repository. Adjust the path accordingly. Used only for Docker/Containerd packages (if needed); other packages might
|
|
be installed from other repositories. You might disable installing packages from other repositories by skipping
|
|
the `system-packages` tag
|
|
|
|
## Install Kubespray Python Packages
|
|
|
|
### Recommended way: Kubespray Container Image
|
|
|
|
The easiest way is to use [kubespray container image](https://quay.io/kubespray/kubespray) as all the required packages
|
|
are baked in the image.
|
|
Just copy the container image in your private container image registry and you are all set!
|
|
|
|
### Manual installation
|
|
|
|
Look at the `requirements.txt` file and check if your OS provides all packages out-of-the-box (Using the OS package
|
|
manager). For those missing, you need to either use a proxy that has Internet access (typically from a DMZ) or setup a
|
|
PyPi server in your network that will host these packages.
|
|
|
|
If you're using an HTTP(S) proxy to download your python packages:
|
|
|
|
```bash
|
|
sudo pip install --proxy=https://[username:password@]proxyserver:port -r requirements.txt
|
|
```
|
|
|
|
When using an internal PyPi server:
|
|
|
|
```bash
|
|
# If you host all required packages
|
|
pip install -i https://pypiserver/pypi -r requirements.txt
|
|
|
|
# If you only need the ones missing from the OS package manager
|
|
pip install -i https://pypiserver/pypi package_you_miss
|
|
```
|
|
|
|
## Run Kubespray as usual
|
|
|
|
Once all artifacts are in place and your inventory properly set up, you can run kubespray with the
|
|
regular `cluster.yaml` command:
|
|
|
|
```bash
|
|
ansible-playbook -i inventory/my_airgap_cluster/hosts.yaml -b cluster.yml
|
|
```
|
|
|
|
If you use [Kubespray Container Image](#recommended-way:-kubespray-container-image), you can mount your inventory inside
|
|
the container:
|
|
|
|
```bash
|
|
docker run --rm -it -v path_to_inventory/my_airgap_cluster:inventory/my_airgap_cluster myprivateregisry.com/kubespray/kubespray:v2.14.0 ansible-playbook -i inventory/my_airgap_cluster/hosts.yaml -b cluster.yml
|
|
```
|