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# Use imutable image tags rather than mutable tags (like ubuntu:22.04) | ||
FROM ubuntu:jammy-20230308 | ||
# Some tools like yamllint need this | ||
# Pip needs this as well at the moment to install ansible | ||
# (and potentially other packages) | ||
# See: https://github.com/pypa/pip/issues/10219 | ||
ENV LANG=C.UTF-8 \ | ||
DEBIAN_FRONTEND=noninteractive \ | ||
PYTHONDONTWRITEBYTECODE=1 | ||
WORKDIR /kubespray | ||
COPY *.yml ./ | ||
COPY *.cfg ./ | ||
COPY roles ./roles | ||
COPY contrib ./contrib | ||
COPY inventory ./inventory | ||
COPY library ./library | ||
COPY extra_playbooks ./extra_playbooks | ||
COPY playbooks ./playbooks | ||
COPY plugins ./plugins | ||
|
||
RUN apt update -q \ | ||
&& apt install -yq --no-install-recommends \ | ||
curl \ | ||
python3 \ | ||
python3-pip \ | ||
sshpass \ | ||
vim \ | ||
rsync \ | ||
openssh-client \ | ||
&& pip install --no-compile --no-cache-dir \ | ||
ansible==7.6.0 \ | ||
ansible-core==2.14.6 \ | ||
cryptography==41.0.1 \ | ||
jinja2==3.1.2 \ | ||
netaddr==0.8.0 \ | ||
jmespath==1.0.1 \ | ||
MarkupSafe==2.1.3 \ | ||
ruamel.yaml==0.17.21 \ | ||
passlib==1.7.4 \ | ||
&& KUBE_VERSION=$(sed -n 's/^kube_version: //p' roles/kubespray-defaults/defaults/main.yaml) \ | ||
&& curl -L https://dl.k8s.io/release/$KUBE_VERSION/bin/linux/$(dpkg --print-architecture)/kubectl -o /usr/local/bin/kubectl \ | ||
&& echo $(curl -L https://dl.k8s.io/release/$KUBE_VERSION/bin/linux/$(dpkg --print-architecture)/kubectl.sha256) /usr/local/bin/kubectl | sha256sum --check \ | ||
&& chmod a+x /usr/local/bin/kubectl \ | ||
&& rm -rf /var/lib/apt/lists/* /var/log/* \ | ||
&& find /usr -type d -name '*__pycache__' -prune -exec rm -rf {} \; |
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mitogen: | ||
@echo Mitogen support is deprecated. | ||
@echo Please run the following command manually: | ||
@echo ansible-playbook -c local mitogen.yml -vv | ||
clean: | ||
rm -rf dist/ | ||
rm *.retry |
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# Deploy a Production Ready Kubernetes Cluster | ||
|
||
![Kubernetes Logo](https://raw.githubusercontent.com/kubernetes-sigs/kubespray/master/docs/img/kubernetes-logo.png) | ||
|
||
If you have questions, check the documentation at [kubespray.io](https://kubespray.io) and join us on the [kubernetes slack](https://kubernetes.slack.com), channel **\#kubespray**. | ||
You can get your invite [here](http://slack.k8s.io/) | ||
|
||
- Can be deployed on **[AWS](docs/aws.md), GCE, [Azure](docs/azure.md), [OpenStack](docs/openstack.md), [vSphere](docs/vsphere.md), [Equinix Metal](docs/equinix-metal.md) (bare metal), Oracle Cloud Infrastructure (Experimental), or Baremetal** | ||
- **Highly available** cluster | ||
- **Composable** (Choice of the network plugin for instance) | ||
- Supports most popular **Linux distributions** | ||
- **Continuous integration tests** | ||
|
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## Quick Start | ||
|
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Below are several ways to use Kubespray to deploy a Kubernetes cluster. | ||
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### Ansible | ||
|
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#### Usage | ||
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Install Ansible according to [Ansible installation guide](/docs/ansible.md#installing-ansible) | ||
then run the following steps: | ||
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```ShellSession | ||
# Copy ``inventory/sample`` as ``inventory/mycluster`` | ||
cp -rfp inventory/sample inventory/mycluster | ||
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# Update Ansible inventory file with inventory builder | ||
declare -a IPS=(10.10.1.3 10.10.1.4 10.10.1.5) | ||
CONFIG_FILE=inventory/mycluster/hosts.yaml python3 contrib/inventory_builder/inventory.py ${IPS[@]} | ||
|
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# Review and change parameters under ``inventory/mycluster/group_vars`` | ||
cat inventory/mycluster/group_vars/all/all.yml | ||
cat inventory/mycluster/group_vars/k8s_cluster/k8s-cluster.yml | ||
|
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# Clean up old Kubernetes cluster with Ansible Playbook - run the playbook as root | ||
# The option `--become` is required, as for example cleaning up SSL keys in /etc/, | ||
# uninstalling old packages and interacting with various systemd daemons. | ||
# Without --become the playbook will fail to run! | ||
# And be mind it will remove the current kubernetes cluster (if it's running)! | ||
ansible-playbook -i inventory/mycluster/hosts.yaml --become --become-user=root reset.yml | ||
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# Deploy Kubespray with Ansible Playbook - run the playbook as root | ||
# The option `--become` is required, as for example writing SSL keys in /etc/, | ||
# installing packages and interacting with various systemd daemons. | ||
# Without --become the playbook will fail to run! | ||
ansible-playbook -i inventory/mycluster/hosts.yaml --become --become-user=root cluster.yml | ||
``` | ||
|
||
Note: When Ansible is already installed via system packages on the control node, | ||
Python packages installed via `sudo pip install -r requirements.txt` will go to | ||
a different directory tree (e.g. `/usr/local/lib/python2.7/dist-packages` on | ||
Ubuntu) from Ansible's (e.g. `/usr/lib/python2.7/dist-packages/ansible` still on | ||
Ubuntu). As a consequence, the `ansible-playbook` command will fail with: | ||
|
||
```raw | ||
ERROR! no action detected in task. This often indicates a misspelled module name, or incorrect module path. | ||
``` | ||
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This likely indicates that a task depends on a module present in ``requirements.txt``. | ||
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One way of addressing this is to uninstall the system Ansible package then | ||
reinstall Ansible via ``pip``, but this not always possible and one must | ||
take care regarding package versions. | ||
A workaround consists of setting the `ANSIBLE_LIBRARY` | ||
and `ANSIBLE_MODULE_UTILS` environment variables respectively to | ||
the `ansible/modules` and `ansible/module_utils` subdirectories of the ``pip`` | ||
installation location, which is the ``Location`` shown by running | ||
`pip show [package]` before executing `ansible-playbook`. | ||
|
||
A simple way to ensure you get all the correct version of Ansible is to use | ||
the [pre-built docker image from Quay](https://quay.io/repository/kubespray/kubespray?tab=tags). | ||
You will then need to use [bind mounts](https://docs.docker.com/storage/bind-mounts/) | ||
to access the inventory and SSH key in the container, like this: | ||
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```ShellSession | ||
git checkout v2.23.0 | ||
docker pull quay.io/kubespray/kubespray:v2.23.0 | ||
docker run --rm -it --mount type=bind,source="$(pwd)"/inventory/sample,dst=/inventory \ | ||
--mount type=bind,source="${HOME}"/.ssh/id_rsa,dst=/root/.ssh/id_rsa \ | ||
quay.io/kubespray/kubespray:v2.23.0 bash | ||
# Inside the container you may now run the kubespray playbooks: | ||
ansible-playbook -i /inventory/inventory.ini --private-key /root/.ssh/id_rsa cluster.yml | ||
``` | ||
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#### Collection | ||
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See [here](docs/ansible_collection.md) if you wish to use this repository as an Ansible collection | ||
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### Vagrant | ||
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For Vagrant we need to install Python dependencies for provisioning tasks. | ||
Check that ``Python`` and ``pip`` are installed: | ||
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```ShellSession | ||
python -V && pip -V | ||
``` | ||
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If this returns the version of the software, you're good to go. If not, download and install Python from here <https://www.python.org/downloads/source/> | ||
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Install Ansible according to [Ansible installation guide](/docs/ansible.md#installing-ansible) | ||
then run the following step: | ||
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```ShellSession | ||
vagrant up | ||
``` | ||
|
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## Documents | ||
|
||
- [Requirements](#requirements) | ||
- [Kubespray vs ...](docs/comparisons.md) | ||
- [Getting started](docs/getting-started.md) | ||
- [Setting up your first cluster](docs/setting-up-your-first-cluster.md) | ||
- [Ansible inventory and tags](docs/ansible.md) | ||
- [Integration with existing ansible repo](docs/integration.md) | ||
- [Deployment data variables](docs/vars.md) | ||
- [DNS stack](docs/dns-stack.md) | ||
- [HA mode](docs/ha-mode.md) | ||
- [Network plugins](#network-plugins) | ||
- [Vagrant install](docs/vagrant.md) | ||
- [Flatcar Container Linux bootstrap](docs/flatcar.md) | ||
- [Fedora CoreOS bootstrap](docs/fcos.md) | ||
- [Debian Jessie setup](docs/debian.md) | ||
- [openSUSE setup](docs/opensuse.md) | ||
- [Downloaded artifacts](docs/downloads.md) | ||
- [Cloud providers](docs/cloud.md) | ||
- [OpenStack](docs/openstack.md) | ||
- [AWS](docs/aws.md) | ||
- [Azure](docs/azure.md) | ||
- [vSphere](docs/vsphere.md) | ||
- [Equinix Metal](docs/equinix-metal.md) | ||
- [Large deployments](docs/large-deployments.md) | ||
- [Adding/replacing a node](docs/nodes.md) | ||
- [Upgrades basics](docs/upgrades.md) | ||
- [Air-Gap installation](docs/offline-environment.md) | ||
- [NTP](docs/ntp.md) | ||
- [Hardening](docs/hardening.md) | ||
- [Mirror](docs/mirror.md) | ||
- [Roadmap](docs/roadmap.md) | ||
|
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## Supported Linux Distributions | ||
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- **Flatcar Container Linux by Kinvolk** | ||
- **Debian** Bookworm, Bullseye, Buster | ||
- **Ubuntu** 20.04, 22.04 | ||
- **CentOS/RHEL** 7, [8, 9](docs/centos.md#centos-8) | ||
- **Fedora** 37, 38 | ||
- **Fedora CoreOS** (see [fcos Note](docs/fcos.md)) | ||
- **openSUSE** Leap 15.x/Tumbleweed | ||
- **Oracle Linux** 7, [8, 9](docs/centos.md#centos-8) | ||
- **Alma Linux** [8, 9](docs/centos.md#centos-8) | ||
- **Rocky Linux** [8, 9](docs/centos.md#centos-8) | ||
- **Kylin Linux Advanced Server V10** (experimental: see [kylin linux notes](docs/kylinlinux.md)) | ||
- **Amazon Linux 2** (experimental: see [amazon linux notes](docs/amazonlinux.md)) | ||
- **UOS Linux** (experimental: see [uos linux notes](docs/uoslinux.md)) | ||
- **openEuler** (experimental: see [openEuler notes](docs/openeuler.md)) | ||
|
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Note: Upstart/SysV init based OS types are not supported. | ||
|
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## Supported Components | ||
|
||
- Core | ||
- [kubernetes](https://github.com/kubernetes/kubernetes) v1.28.2 | ||
- [etcd](https://github.com/etcd-io/etcd) v3.5.9 | ||
- [docker](https://www.docker.com/) v20.10 (see note) | ||
- [containerd](https://containerd.io/) v1.7.6 | ||
- [cri-o](http://cri-o.io/) v1.27 (experimental: see [CRI-O Note](docs/cri-o.md). Only on fedora, ubuntu and centos based OS) | ||
- Network Plugin | ||
- [cni-plugins](https://github.com/containernetworking/plugins) v1.2.0 | ||
- [calico](https://github.com/projectcalico/calico) v3.26.1 | ||
- [cilium](https://github.com/cilium/cilium) v1.13.4 | ||
- [flannel](https://github.com/flannel-io/flannel) v0.22.0 | ||
- [kube-ovn](https://github.com/alauda/kube-ovn) v1.11.5 | ||
- [kube-router](https://github.com/cloudnativelabs/kube-router) v1.6.0 | ||
- [multus](https://github.com/k8snetworkplumbingwg/multus-cni) v3.8 | ||
- [weave](https://github.com/weaveworks/weave) v2.8.1 | ||
- [kube-vip](https://github.com/kube-vip/kube-vip) v0.5.12 | ||
- Application | ||
- [cert-manager](https://github.com/jetstack/cert-manager) v1.11.1 | ||
- [coredns](https://github.com/coredns/coredns) v1.10.1 | ||
- [ingress-nginx](https://github.com/kubernetes/ingress-nginx) v1.8.2 | ||
- [krew](https://github.com/kubernetes-sigs/krew) v0.4.4 | ||
- [argocd](https://argoproj.github.io/) v2.8.0 | ||
- [helm](https://helm.sh/) v3.12.3 | ||
- [metallb](https://metallb.universe.tf/) v0.13.9 | ||
- [registry](https://github.com/distribution/distribution) v2.8.1 | ||
- Storage Plugin | ||
- [cephfs-provisioner](https://github.com/kubernetes-incubator/external-storage) v2.1.0-k8s1.11 | ||
- [rbd-provisioner](https://github.com/kubernetes-incubator/external-storage) v2.1.1-k8s1.11 | ||
- [aws-ebs-csi-plugin](https://github.com/kubernetes-sigs/aws-ebs-csi-driver) v0.5.0 | ||
- [azure-csi-plugin](https://github.com/kubernetes-sigs/azuredisk-csi-driver) v1.10.0 | ||
- [cinder-csi-plugin](https://github.com/kubernetes/cloud-provider-openstack/blob/master/docs/cinder-csi-plugin/using-cinder-csi-plugin.md) v1.22.0 | ||
- [gcp-pd-csi-plugin](https://github.com/kubernetes-sigs/gcp-compute-persistent-disk-csi-driver) v1.9.2 | ||
- [local-path-provisioner](https://github.com/rancher/local-path-provisioner) v0.0.24 | ||
- [local-volume-provisioner](https://github.com/kubernetes-sigs/sig-storage-local-static-provisioner) v2.5.0 | ||
|
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## Container Runtime Notes | ||
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- Supported Docker versions are 18.09, 19.03, 20.10, 23.0 and 24.0. The *recommended* Docker version is 20.10 (except on Debian bookworm which without supporting for 20.10 and below any more). `Kubelet` might break on docker's non-standard version numbering (it no longer uses semantic versioning). To ensure auto-updates don't break your cluster look into e.g. the YUM ``versionlock`` plugin or ``apt pin``). | ||
- The cri-o version should be aligned with the respective kubernetes version (i.e. kube_version=1.20.x, crio_version=1.20) | ||
|
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## Requirements | ||
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- **Minimum required version of Kubernetes is v1.26** | ||
- **Ansible v2.14+, Jinja 2.11+ and python-netaddr is installed on the machine that will run Ansible commands** | ||
- The target servers must have **access to the Internet** in order to pull docker images. Otherwise, additional configuration is required (See [Offline Environment](docs/offline-environment.md)) | ||
- The target servers are configured to allow **IPv4 forwarding**. | ||
- If using IPv6 for pods and services, the target servers are configured to allow **IPv6 forwarding**. | ||
- The **firewalls are not managed**, you'll need to implement your own rules the way you used to. | ||
in order to avoid any issue during deployment you should disable your firewall. | ||
- If kubespray is run from non-root user account, correct privilege escalation method | ||
should be configured in the target servers. Then the `ansible_become` flag | ||
or command parameters `--become or -b` should be specified. | ||
|
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Hardware: | ||
These limits are safeguarded by Kubespray. Actual requirements for your workload can differ. For a sizing guide go to the [Building Large Clusters](https://kubernetes.io/docs/setup/cluster-large/#size-of-master-and-master-components) guide. | ||
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- Master | ||
- Memory: 1500 MB | ||
- Node | ||
- Memory: 1024 MB | ||
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## Network Plugins | ||
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You can choose among ten network plugins. (default: `calico`, except Vagrant uses `flannel`) | ||
|
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- [flannel](docs/flannel.md): gre/vxlan (layer 2) networking. | ||
|
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- [Calico](https://docs.tigera.io/calico/latest/about/) is a networking and network policy provider. Calico supports a flexible set of networking options | ||
designed to give you the most efficient networking across a range of situations, including non-overlay | ||
and overlay networks, with or without BGP. Calico uses the same engine to enforce network policy for hosts, | ||
pods, and (if using Istio and Envoy) applications at the service mesh layer. | ||
|
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- [cilium](http://docs.cilium.io/en/latest/): layer 3/4 networking (as well as layer 7 to protect and secure application protocols), supports dynamic insertion of BPF bytecode into the Linux kernel to implement security services, networking and visibility logic. | ||
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- [weave](docs/weave.md): Weave is a lightweight container overlay network that doesn't require an external K/V database cluster. | ||
(Please refer to `weave` [troubleshooting documentation](https://www.weave.works/docs/net/latest/troubleshooting/)). | ||
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- [kube-ovn](docs/kube-ovn.md): Kube-OVN integrates the OVN-based Network Virtualization with Kubernetes. It offers an advanced Container Network Fabric for Enterprises. | ||
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- [kube-router](docs/kube-router.md): Kube-router is a L3 CNI for Kubernetes networking aiming to provide operational | ||
simplicity and high performance: it uses IPVS to provide Kube Services Proxy (if setup to replace kube-proxy), | ||
iptables for network policies, and BGP for ods L3 networking (with optionally BGP peering with out-of-cluster BGP peers). | ||
It can also optionally advertise routes to Kubernetes cluster Pods CIDRs, ClusterIPs, ExternalIPs and LoadBalancerIPs. | ||
|
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- [macvlan](docs/macvlan.md): Macvlan is a Linux network driver. Pods have their own unique Mac and Ip address, connected directly the physical (layer 2) network. | ||
|
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- [multus](docs/multus.md): Multus is a meta CNI plugin that provides multiple network interface support to pods. For each interface Multus delegates CNI calls to secondary CNI plugins such as Calico, macvlan, etc. | ||
|
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- [custom_cni](roles/network-plugin/custom_cni/) : You can specify some manifests that will be applied to the clusters to bring you own CNI and use non-supported ones by Kubespray. | ||
See `tests/files/custom_cni/README.md` and `tests/files/custom_cni/values.yaml`for an example with a CNI provided by a Helm Chart. | ||
|
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The network plugin to use is defined by the variable `kube_network_plugin`. There is also an | ||
option to leverage built-in cloud provider networking instead. | ||
See also [Network checker](docs/netcheck.md). | ||
|
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## Ingress Plugins | ||
|
||
- [nginx](https://kubernetes.github.io/ingress-nginx): the NGINX Ingress Controller. | ||
|
||
- [metallb](docs/metallb.md): the MetalLB bare-metal service LoadBalancer provider. | ||
|
||
## Community docs and resources | ||
|
||
- [kubernetes.io/docs/setup/production-environment/tools/kubespray/](https://kubernetes.io/docs/setup/production-environment/tools/kubespray/) | ||
- [kubespray, monitoring and logging](https://github.com/gregbkr/kubernetes-kargo-logging-monitoring) by @gregbkr | ||
- [Deploy Kubernetes w/ Ansible & Terraform](https://rsmitty.github.io/Terraform-Ansible-Kubernetes/) by @rsmitty | ||
- [Deploy a Kubernetes Cluster with Kubespray (video)](https://www.youtube.com/watch?v=CJ5G4GpqDy0) | ||
|
||
## Tools and projects on top of Kubespray | ||
|
||
- [Digital Rebar Provision](https://github.com/digitalrebar/provision/blob/v4/doc/integrations/ansible.rst) | ||
- [Terraform Contrib](https://github.com/kubernetes-sigs/kubespray/tree/master/contrib/terraform) | ||
- [Kubean](https://github.com/kubean-io/kubean) | ||
|
||
## CI Tests | ||
|
||
[![Build graphs](https://gitlab.com/kargo-ci/kubernetes-sigs-kubespray/badges/master/pipeline.svg)](https://gitlab.com/kargo-ci/kubernetes-sigs-kubespray/-/pipelines) | ||
|
||
CI/end-to-end tests sponsored by: [CNCF](https://cncf.io), [Equinix Metal](https://metal.equinix.com/), [OVHcloud](https://www.ovhcloud.com/), [ELASTX](https://elastx.se/). | ||
|
||
See the [test matrix](docs/test_cases.md) for details. |
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# Defined below are the security contacts for this repo. | ||
# | ||
# They are the contact point for the Product Security Committee to reach out | ||
# to for triaging and handling of incoming issues. | ||
# | ||
# The below names agree to abide by the | ||
# [Embargo Policy](https://git.k8s.io/security/private-distributors-list.md#embargo-policy) | ||
# and will be removed and replaced if they violate that agreement. | ||
# | ||
# DO NOT REPORT SECURITY VULNERABILITIES DIRECTLY TO THESE NAMES, FOLLOW THE | ||
# INSTRUCTIONS AT https://kubernetes.io/security/ | ||
mattymo | ||
floryut | ||
oomichi | ||
cristicalin |
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