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32 changes: 32 additions & 0 deletions releases/v3.0/CNIGenieFeatureSet.md
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# Features covered in each CNI-Genie version:

## Existing features

**Feature 1: CNI-Genie "Multiple CNI Plugins"**
* Interface Connector to 3rd party CNI-Plugins. The user can [manually select one of the multiple CNI plugins](multiple-cni-plugins/README.md)

**Feature 2: CNI-Genie "Multiple IP Addresses"**
* Injects multiple IPs to a single container. The container is reachable using any of the [multiple IP Addresses](multiple-ips/README.md)

**Feature 3: CNI-Genie "Network Attachment Definition"**
* [Network Attachment Definition](network-attachment-definitions/README.md) feature incorporates Kubernetes Network Custom Resource Definition De-facto Standard in CNI-Genie

**Feature 4: CNI-Genie "Smart CNI Plugin Selection"**
* Intelligence in selecting the CNI plugin. CNI-Genie [watches the KPI of interest and selects](smart-cni-genie/README.md) the CNI plugin, accordingly

**Feature 5: CNI-Genie "Default Plugin Selection"**
* Support to set default plugin of user choice to be used for all the pods being created

**Feature 6: CNI-Genie "Network Isolation"**
* Dedicated 'physical' network for a tenant
* Isolated 'logical' networks for different tenants on a shared 'physical'network

## Future features

**Feature 7: CNI-Genie "Network Policy Engine"**
* [CNI-Genie network policy engine](network-policy/README.md) allows for network level ACLs

**Feature 8: CNI-Genie "Real-time Network Switching"**
* Price minimization: dynamically switching workload to a cheaper network as network prices change
* Maximizing network utilization: dynamically switching workload to the less congested network at a threshold

80 changes: 80 additions & 0 deletions releases/v3.0/GettingStarted.md
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# Getting started

### Prerequisite

* Linux box with
* We tested on Ubuntu 14.04 & 16.04
* Docker installed
* Kubernetes cluster running with CNI enabled
* One easy way to bring up a cluster is to use [kubeadm](https://kubernetes.io/docs/getting-started-guides/kubeadm/):
* We tested on Kubernetes 1.5, 1.6, 1.7, 1.8

Till 1.7 version:
```
$ kubeadm init --use-kubernetes-version=v1.7.0 --pod-network-cidr=10.244.0.0/16
```
Version 1.8 onwards:
```
$ kubeadm init --pod-network-cidr=10.244.0.0/16
```
Next steps:
```
$ mkdir -p $HOME/.kube
$ sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
$ sudo chown $(id -u):$(id -g) $HOME/.kube/config
```
* To schedule pods on the master, e.g. for a single-machine Kubernetes cluster,
Till 1.7 version, run:
```
$ kubectl taint nodes --all dedicated-
```
Version 1.8 onwards, run:
```
$ kubectl taint nodes --all node-role.kubernetes.io/master-
```
* One (or more) CNI plugin(s) installed, e.g., Calico, Weave, Flannel
* Use this [link](https://docs.projectcalico.org/v3.2/getting-started/kubernetes) to install Calico
* Use this [link](https://www.weave.works/docs/net/latest/kube-addon/) to install Weave
* Use this [link](https://github.com/coreos/flannel/blob/master/Documentation/kube-flannel.yml) to install Flannel
### Installing genie
We install genie as a Docker Container on every node
Till Kubernetes 1.7 version:
```
$ kubectl apply -f https://raw.githubusercontent.com/Huawei-PaaS/CNI-Genie/master/conf/1.5/genie.yaml
```
Kubernetes 1.8 version onwards:
```
$ kubectl apply -f https://raw.githubusercontent.com/Huawei-PaaS/CNI-Genie/master/releases/v3.0/genie.yaml
```
### Building, Testing, Making changes to source code
Refer to our [Developer's Guide](developer-guide.md) section.
### Genie Logs
For now Genie logs are stored in /var/log/syslog
To see the logs:
```
$ cat /dev/null > /var/log/syslog

$ tail -f /var/log/syslog | grep 'CNI'
```
### Troubleshooting
* Note: one a single node cluster, after your Kubernetes master is initialized successfully, make sure you are able to schedule pods on the master by running:
```
$ kubectl taint nodes --all node-role.kubernetes.io/master-
```
* Note: most plugins use differenet installation files for Kuberenetes 1.5, 1.6, 1.7 & 1.8. Make sure you use the right one!
76 changes: 76 additions & 0 deletions releases/v3.0/README.md
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# CNI-Genie

CNI-Genie enables container orchestrators ([Kubernetes](https://github.com/kubernetes/kubernetes), [Mesos](https://mesosphere.com/)) to seamlessly connect to the choice of CNI plugins installed on a host, including
1. ['reference' CNI plugins](https://github.com/containernetworking/plugins), e.g., bridge, macvlan, ipvlan, loopback
2. '3rd-party' CNI plugins, e.g., ([Calico](https://github.com/projectcalico/calico), [Romana](https://github.com/romana/romana), [Weave-net](https://github.com/weaveworks/weave))
3. 'specialized' CNI plugins, e.g., [SR-IOV](https://github.com/hustcat/sriov-cni), DPDK (work-in-progress)
4. any generic CNI plugin of choice installed on the host

Without CNI-Genie, the orchestrator is bound to only a single CNI plugin. E.g., for the case of Kubernetes, without CNI-Genie, kubelet is bound to only a single CNI plugin passed to kubelet on start. CNI-Genie allows for the co-existance of multiple CNI plugins in runtime.

[![Build Status](https://travis-ci.org/Huawei-PaaS/CNI-Genie.svg)](https://travis-ci.org/Huawei-PaaS/CNI-Genie)
[![Go Report Card](https://goreportcard.com/badge/github.com/Huawei-PaaS/CNI-Genie)](https://goreportcard.com/report/github.com/Huawei-PaaS/CNI-Genie)

Please feel free to post your feedback, questions on CNI-Genie [Slack channel](https://cni-genie.slack.com/)

## Demo
Here is a 6 minute demo video that demonstrates 3 scenarios
1. Assign an IP address to a pod from a particular network solution, e.g., 'Weave-net'
2. Assign multi-IP addresses to a pod from multiple network solutions, e.g., 1st IP address from 'Weave-net', 2nd IP address from 'Canal'
3. Assign an IP address to a pod from the "less congested" network solution, e.g., from 'Canal' that is less congested

[![asciicast](https://asciinema.org/a/118191.png)](https://asciinema.org/a/118191)

# Contributing
[Contributing](../../CONTRIBUTING.md)

[Code of Conduct](../../CODE_OF_CONDUCT.md)

# Why we created CNI-Genie?

CNI Genie is an add-on to [Kuberenets](https://github.com/kubernetes/kubernetes) open-source project and is designed to provide the following features:

1. [wide range of network offerings, CNI plugins](../../docs/multiple-cni-plugins/README.md), available to the users in runtime. This figure shows Kubernetes CNI Plugin landscape before and after CNI-Genie
![image](../../docs/multiple-cni-plugins/what-cni-genie.png)
- User-story: based on "performance" requirements, "application" requirements, “workload placement” requirements, the user could be interested to use different CNI plugins for different application groups
- Different CNI plugins are different in terms of need for port-mapping, NAT, tunneling, interrupting host ports/interfaces

[Watch multiple CNI plugins demo](https://github.com/Huawei-PaaS/CNI-Genie/blob/master/docs/multiple-cni-plugins/README.md#demo)


2. [Multiple NICs per container & per pod](../../docs/multiple-ips/README.md). The user can select multiple NICs to be added to a container upon creating them. Each NIC can get an IP address from an existing CNI plugin of choice. This makes the container reachable across multiple networks. Some use-cases from [SIG-Network](https://github.com/kubernetes/community/wiki/SIG-Network) are depicted in the figure below
![image](../../docs/multiple-ips/multi-interface.PNG)

[Watch multi-NICs per 'container' demo](https://github.com/Huawei-PaaS/CNI-Genie/blob/master/docs/multiple-ips/README.md#demo)

[Watch multi-NICs per 'pod' demo](https://github.com/Huawei-PaaS/CNI-Genie/blob/master/docs/multiple-ips/README.md#feature-2-extension-cni-genie-multiple-ip-addresses-per-pod) (IP addresses assigned not only to the container, but also to the Pod)

3. [Network Attachment Definition](../../docs/network-attachment-definitions/README.md). CNI-Genie supports [NPWG Multi-Network Specification v1](https://github.com/K8sNetworkPlumbingWG/multi-net-spec) style network attachment to pods, where pods can be assigned IP according to network-attachment-definition CRD objects created by user.

4. The user can leave the CNI plugin selection to CNI-Genie. CNI-Genie watches the Key Performance Indicator (KPI) that is of interest to the user and [selects the CNI plugin](../../docs/smart-cni-genie/README.md), accordingly.
- CNI Genie watches KPI(s) of interest for existing CNI plugins, e.g., occupancy rate, number of subnets, latency, bandwidth

[Watch Smart CNI Plugin Selection demo](https://github.com/Huawei-PaaS/CNI-Genie/blob/master/docs/smart-cni-genie/README.md#demo)


5. [Default plugin support](../../docs/default-plugin/README.md). Another useful feature from genie. Using this, we can ensure to get ip address(es) for a pod by selecting default set of plugins


6. Network isolation, i.e.,
- Dedicated 'physical' network for a tenant
- Isolated 'logical' networks for different tenants on a shared 'physical'network

Usecase : [Obtaining Pod Ip address from customized subnet](../../docs/network-isolation/README.md)

7. [CNI-Genie network policy engine](../../docs/network-policy/README.md) for network level ACLs

8. Real-time switching between different (physical or logical) networks for a given workload. This allows for
- Price minimization: dynamically switching workload to a cheaper network as network prices change
- Maximizing network utilization: dynamically switching workload to the less congested network at a threshold

![image](../../docs/network-switching.PNG)

Note: CNI-Genie itself is NOT a routing solution! It makes a call to CNI plugins that provide routing service

### More docs here [Getting started](GettingStarted.md), [CNI-Genie Feature Set](CNIGenieFeatureSet.md)

38 changes: 38 additions & 0 deletions releases/v3.0/developer-guide.md
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## Developer's Guide

### Build process

After making any modification to source files, below steps can be followed to build and use the new binary.

Note that you should install genie first before making changes to the source. This ensures genie conf file is generated successfully.

Please make sure to run the below commands with root privilege.

#### *Building and Using CNI-Genie plugin:*

Build genie binary by running:
```
make plugin
```
Place "genie" binary from dest/ into /opt/cni/bin/ directory.
```
cp dist/genie /opt/cni/bin/genie
```
### Test process

#### prerequisites

A running kubernetes cluster is required to run the tests.

#### Running the tests

To run ginkgo tests for CNI-Genie run the following command:

If Kubernetes cluster is 1.7+
```
make test testKubeVersion=1.7 testKubeConfig=/etc/kubernetes/admin.conf
```

If Kubernetes cluster is 1.5.x
```
make test testKubeVersion=1.5
163 changes: 163 additions & 0 deletions releases/v3.0/genie.yaml
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---
kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1beta1
metadata:
name: genie
rules:
- apiGroups:
- ""
resources:
- pods
verbs:
- get
- update
- patch
- apiGroups:
- "alpha.network.k8s.io"
resources:
- logicalnetworks
verbs:
- get
- update
- patch
- apiGroups:
- "alpha.network.k8s.io"
resources:
- physicalnetworks
verbs:
- get
- update
- patch
- apiGroups:
- "k8s.cni.cncf.io"
resources:
- network-attachment-definitions
verbs:
- get
- update
- apiGroups:
- ""
resources:
- configmaps
verbs:
- get
- apiGroups:
- "admissionregistration.k8s.io"
resources:
- validatingwebhookconfigurations
verbs:
- get
- update
- create
- delete

---
kind: ClusterRoleBinding
apiVersion: rbac.authorization.k8s.io/v1beta1
metadata:
name: genie
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: genie
subjects:
- kind: ServiceAccount
name: genie
namespace: kube-system
- kind: Group
name: system:authenticated
apiGroup: rbac.authorization.k8s.io

---
apiVersion: v1
kind: ServiceAccount
metadata:
name: genie
namespace: kube-system

---
# This ConfigMap can be used to configure a self-hosted CNI-Genie installation.
kind: ConfigMap
apiVersion: v1
metadata:
name: genie-config
namespace: kube-system
data:
# The CNI network configuration to install on each node.
cni_genie_network_config: |-
{
"name": "k8s-pod-network",
"type": "genie",
"log_level": "info",
"datastore_type": "kubernetes",
"hostname": "__KUBERNETES_NODE_NAME__",
"policy": {
"type": "k8s",
"k8s_auth_token": "__SERVICEACCOUNT_TOKEN__"
},
"kubernetes": {
"k8s_api_root": "https://__KUBERNETES_SERVICE_HOST__:__KUBERNETES_SERVICE_PORT__",
"kubeconfig": "/etc/cni/net.d/genie-kubeconfig"
},
"romana_root": "http://__ROMANA_SERVICE_HOST__:__ROMANA_SERVICE_PORT__",
"segment_label_name": "romanaSegment"
}
---
# Install CNI-Genie plugin on each slave node.
kind: DaemonSet
apiVersion: extensions/v1beta1
metadata:
name: genie-plugin
namespace: kube-system
labels:
k8s-app: genie
spec:
selector:
matchLabels:
k8s-app: genie
template:
metadata:
labels:
k8s-app: genie
annotations:
scheduler.alpha.kubernetes.io/critical-pod: ''
spec:
hostNetwork: true
hostPID: true
serviceAccountName: genie
tolerations:
- key: CriticalAddonsOnly
operator: Exists
- key: node.kubernetes.io/not-ready
effect: NoSchedule
operator: Exists
containers:
# Create a container with install.sh that
# Installs required 00-genie.conf and genie binary
# on slave node.
- name: install-cni
image: cnigenie/genie-plugin:v3.0
imagePullPolicy: Always
command: ["/launch.sh"]
env:
- name: CNI_NETWORK_CONFIG
valueFrom:
configMapKeyRef:
name: genie-config
key: cni_genie_network_config
- name: KUBERNETES_NODE_NAME
valueFrom:
fieldRef:
fieldPath: spec.nodeName
volumeMounts:
- mountPath: /host/opt/cni/bin
name: cni-bin-dir
- mountPath: /host/etc/cni/net.d
name: cni-net-dir
volumes:
- name: cni-bin-dir
hostPath:
path: /opt/cni/bin
- name: cni-net-dir
hostPath:
path: /etc/cni/net.d

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