ONAP on Kubernetes

The official documentation for installation of ONAP with OOM / Kubernetes is located in readthedocs here (TBD). The supported versions of Kubernetes is as follows:

Release	Kubernetes	Helm	Kubectl	Docker
amsterdam	1.7.x	2.3.x	1.7.x	1.12.x
beijing/master	1.8.x	2.7.x	1.8.x	17.03-ce

1) To start - pick your infrastructure - ONAP supports deployment to all the major public clouds such as:

2) On your VM in the above infrastructure - create a Kubernetes environment (a one time activity) follow one of these guides:

3) Install ONAP - use the cd.sh script provided as a patch in review

https://gerrit.onap.org/r/#/c/32653/

Installation templates for Kubernetes and deploying ONAP via OOM for the master and amsterdam branches are in the following locations

OOM-710 - Getting issue details... STATUS

Kubernetes devops / workarounds / troubleshooting content restored from version 378 - into the page ONAP on Kubernetes on Rancher

Example End to End Kubernetes based ONAP install and deployment

Scenario: installing Rancher on clean Ubuntu 16.04 64g VM (single collocated server/host)

Either
git clone https://gerrit.onap.org/r/oom
cd oom
git pull https://gerrit.onap.org/r/oom refs/changes/19/32019/6
cd install/rancher
./oom_rancher_install.sh -b master -s 192.168.241.132 -e onap


or using temporary attachments until the gerrit review is done
wget https://jira.onap.org/secure/attachment/11117/oom_rancher_setup.sh 
./oom_rancher_setup.sh -b master -s 10.12.5.168 -e onap
# wait about 15 min to completion

clone continuous deployment script - until it is merged

wget https://jira.onap.org/secure/attachment/11122/cd.sh
chmod 777 cd.sh
wget https://jira.onap.org/secure/attachment/11124/aaiapisimpledemoopenecomporg.cer
wget https://jira.onap.org/secure/attachment/11125/onap-parameters.yaml
wget https://jira.onap.org/secure/attachment/11126/aai-cloud-region-put.json
./cd.sh -b master
# wait about 25-60 min depending on the speed of your network pulling docker images

Manual Quickstart Installation - Please use script instead

(Manual instructions) - try to use the script at Setting up Kubernetes with Rancher via https://gerrit.onap.org/r/#/c/32019

ONAP Minimum R1 Installation Helm Apps

oom/kubernetes/oneclick/setenv.bash maybe updated to the following reduce app set.

HELM_APPS=('mso' 'message-router' 'sdnc' 'vid' 'robot' 'portal' 'policy' 'appc' 'aai' 'sdc' 'log')
#HELM_APPS=('consul' 'msb' 'mso' 'message-router' 'sdnc' 'vid' 'robot' 'portal' 'policy' 'appc' 'aai' 'sdc' 'dcaegen2' 'log' 'cli' 'multicloud' 'clamp' 'vnfsdk' 'uui' 'aaf' 'vfc' 'kube2msb' 'esr')

1) install rancher, clone oom, run config-init pod, run one or all onap components

*****************

Note: uninstall docker if already installed - as Kubernetes 1.8 under rancher supports 17.03.2 as of 20180124

% sudo apt-get remove docker-engine

*****************

Install Rancher

ONAP deployment in kubernetes is modelled in the oom project as a 1:1 set of service:pod sets (1 pod per docker container). The fastest way to get ONAP Kubernetes up is via Rancher on any bare metal or VM that supports a clean Ubuntu 16.04 install and more than 55G ram.

TODO: REMOVE from table cell - wrapping is not working

(on each host) add to your /etc/hosts to point your ip to your hostname (add your hostname to the end). Add entries for all other hosts in your cluster.

For example on openlab - you will need to add the name of your host before you install docker - to avoid the error below

sudo: unable to resolve host onap-oom

sudo vi /etc/hosts
<your-ip> <your-hostname>

Open Ports

On most hosts like openstack or EC2 you can open all the ports or they are open by default - on some environments like Rackspace VM's you need to open them

sudo iptables -I INPUT 1 -p tcp --dport 8880 -j ACCEPT
iptables-save > /etc/iptables.rules

Fix virtual memory allocation (to allow onap-log:elasticsearch to come up under Rancher 1.6.11+)

sudo sysctl -w vm.max_map_count=262144

clone oom (scp your onap_rsa private key first - or clone anon - Ideally you get a full gerrit account and join the community)

see ssh/http/http access links below

https://gerrit.onap.org/r/#/admin/projects/oom

git clone http://gerrit.onap.org/r/oom

(on each host (server and client(s) which may be the same machine)) Install only the 17.03.2 version of Docker (the only version that works with Kubernetes in Rancher 1.6.13+)

Install Docker

# for root just run the following line and skip to next section - master branch
curl https://releases.rancher.com/install-docker/17.03.sh | sh
# when running as non-root (ubuntu) run the following and logout/log back in
sudo usermod -aG docker ubuntu

Pre pull docker images the first time you install onap. Currently the pre-pull will take 16-180 min depending on your network. Pre pulling the images will allow the entire ONAP to start in 3-8 min instead of up to 3 hours.

OOM-328 - Preload docker images script before createAll.bash will allow 7 min startup REOPENED

Use script above in oom/kubernetes/config once it is merged.

https://git.onap.org/oom/tree/kubernetes/config/prepull_docker.sh

cp oom/kubernetes/config/prepull_docker.sh .
chmod 777 prepull_docker.sh
nohup ./prepull_docker.sh > prepull.log &

To monitor when prepull is finished see section: Prepulldockerimages. It is advised to wait until pre pull has finished before continuing.

(on the master only) Install rancher (Optional: use 8880 instead of 8080 if there is a conflict) - note there may be issues with the dns pod in Rancher after a reboot or when running clustered hosts - a clean system will be OK -

docker run -d --restart=unless-stopped -p 8880:8080 --name rancher-server rancher/server:v1.6.14

In Rancher UI - dont use (http://127.0.0.1:8880) - use the real IP address - so the client configs are populated correctly with callbacks

You must deactivate the default CATTLE environment - by adding a KUBERNETES environment - and Deactivating the older default CATTLE one - your added hosts will attach to the default

- Default → Manage Environments
- Select "Add Environment" button
- Give the Environment a name and description, then select Kubernetes as the Environment Template
- Hit the "Create" button. This will create the environment and bring you back to the Manage Environments view
- At the far right column of the Default Environment row, left-click the menu ( looks like 3 stacked dots ), and select Deactivate. This will make your new Kubernetes environment the new default.

Register your host

Register your host(s) - run following on each host (including the master if you are collocating the master/host on a single machine/vm)

For each host, In Rancher > Infrastructure > Hosts. Select "Add Host"

The first time you add a host - you will be presented with a screen containing the routable IP - hit save only on a routable IP.

Enter IP of host: (if you launched racher with 127.0.0.1/localhost - otherwise keep it empty - it will autopopulate the registration with the real IP)

Copy command to register host with Rancher,

Execute command on each host, for example:

sudo docker run --rm --privileged -v /var/run/docker.sock:/var/run/docker.sock -v /var/lib/rancher:/var/lib/rancher rancher/agent:v1.2.9 http://rackspace.onap.info:8880/v1/scripts/CDE31E5CDE3217328B2D:1514678400000:xLr2ySIppAaEZYWtTVa5V9ZGc

wait for kubernetes menu to populate with the CLI

Install Kubectl

The following will install kubectl (for Kubernetes 1.8.6 ) https://github.com/kubernetes/kubernetes/issues/57528 on a linux host. Once configured, this client tool will provide management of a Kubernetes cluster.

curl -LO https://storage.googleapis.com/kubernetes-release/release/v1.8.6/bin/linux/amd64/kubectl
chmod +x ./kubectl
sudo mv ./kubectl /usr/local/bin/kubectl
mkdir ~/.kube
vi ~/.kube/config

Paste kubectl config from Rancher (you will see the CLI menu in Rancher / Kubernetes after the k8s pods are up on your host)

Click on "Generate Config" to get your content to add into .kube/config

Verify that Kubernetes config is good

root@obrien-kube11-1:~# kubectl cluster-info
Kubernetes master is running at ....
Heapster is running at....
KubeDNS is running at ....
kubernetes-dashboard is running at ...
monitoring-grafana is running at ....
monitoring-influxdb is running at ...
tiller-deploy is running at....

Install Helm

The following will install Helm - currently 2.8.0 on a linux host. Helm is used by OOM for package and configuration management.

https://lists.onap.org/pipermail/onap-discuss/2018-January/007674.html

Prerequisite: Install Kubectl (2.6.1 comes with Rancher 1.6.14 - for master)

wget http://storage.googleapis.com/kubernetes-helm/helm-v2.6.1-linux-amd64.tar.gz
tar -zxvf helm-v2.6.1-linux-amd64.tar.gz
sudo mv linux-amd64/helm /usr/local/bin/helm
# verify version
helm version
# Rancher 1.6.14 installs 2.6.1 - if you upgrade to 2.8.0 - you will need to upgrade helm on the server to the version to level of client
helm init --upgrade

NOTE: If helm version takes long time and eventually errors out, this is most likely because incoming access to port 10250 (exposed by kubelet) is blocked by firewall. Make sure to configure firewall accordingly

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