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diff --git a/docs/oom_setup_kubernetes_rancher.rst b/docs/oom_setup_kubernetes_rancher.rst new file mode 100644 index 0000000000..8e55bf1b66 --- /dev/null +++ b/docs/oom_setup_kubernetes_rancher.rst @@ -0,0 +1,478 @@ +.. This work is licensed under a Creative Commons Attribution 4.0 International License. +.. http://creativecommons.org/licenses/by/4.0 +.. Copyright 2018 Amdocs, Bell Canada + +.. Links +.. _HELM Best Practices Guide: https://docs.helm.sh/chart_best_practices/#requirements +.. _kubectl Cheat Sheet: https://kubernetes.io/docs/reference/kubectl/cheatsheet/ +.. _Kubernetes documentation for emptyDir: https://kubernetes.io/docs/concepts/storage/volumes/#emptydir +.. _Docker DevOps: https://wiki.onap.org/display/DW/Docker+DevOps#DockerDevOps-DockerBuild +.. _http://cd.onap.info:30223/mso/logging/debug: http://cd.onap.info:30223/mso/logging/debug +.. _Onboarding and Distributing a Vendor Software Product: https://wiki.onap.org/pages/viewpage.action?pageId=1018474 +.. _README.md: https://gerrit.onap.org/r/gitweb?p=oom.git;a=blob;f=kubernetes/README.md + +.. figure:: oomLogoV2-medium.png + :align: right + +.. _onap-on-kubernetes-with-rancher: + +ONAP on Kubernetes with Rancher +############################### + +The following instructions will step you through the installation of Kubernetes +on an OpenStack environment with Rancher. The development lab used for this +installation is the ONAP Windriver lab. + +This guide does not cover all of the steps required to setup your OpenStack +environment: e.g. OAM networks and security groups but there is a wealth of +OpenStack information on the web. + +Rancher Installation +==================== + +The following instructions describe how to create an Openstack VM running +Rancher. This node will not be used to host ONAP itself, it will be used +exclusively by Rancher. + +Launch new VM instance to host the Rancher Server +------------------------------------------------- + +.. image:: Rancher-Launch_new_VM_instance_to_host_the_Rancher_Server.jpeg + +Select Ubuntu 16.04 as base image +--------------------------------- +Select "No" on "Create New Volume" + +.. image:: Rancher-Select_Ubuntu_16.04_as_base_image.jpeg + +Select Flavor +------------- +Known issues exist if flavor is too small for Rancher. Please select a flavor +with at least 4 vCPU and 8GB ram. + +.. image:: Rancher-Select_Flavor.jpeg + +Networking +---------- + +.. image:: Rancher-Networking.jpeg + +Security Groups +--------------- + +.. image:: Rancher-Security_Groups.jpeg + +Key Pair +-------- +Use an existing key pair (e.g. onap_key), import an existing one or create a +new one to assign. + +.. image:: Rancher-Key_Pair.jpeg + +Apply customization script for the Rancher VM +--------------------------------------------- + +Click :download:`openstack-rancher.sh <openstack-rancher.sh>` to download the script. + +.. literalinclude:: openstack-rancher.sh + :language: bash + +This customization script will: + +* setup root access to the VM (comment out if you wish to disable this + capability and restrict access to ssh access only) +* install docker +* install rancher +* install kubectl +* install helm +* install nfs server + +.. note:: + The Beijing release of OOM only supports Helm 2.8.2 not the 2.7.2 shown in + the screen capture below. The supported versions of all the software components + are listed in the :ref:`cloud-setup-guide-label`. + +.. image:: Apply_customization_script_for_the_Rancher_VM.jpeg + +Launch Instance +--------------- + +.. image:: Rancher-Launch_Instance.jpeg + +Assign Floating IP for external access +-------------------------------------- + +.. image:: Rancher-Allocate_Floating_IP.jpeg + +.. image:: Rancher-Manage_Floating_IP_Associations.jpeg + +.. image:: Rancher-Launch_Instance.jpeg + +Kubernetes Installation +======================= + +Launch new VM instance(s) to create a Kubernetes single host or cluster +----------------------------------------------------------------------- + +To create a cluster: + +.. note:: + #. do not append a '-1' suffix (e.g. sb4-k8s) + #. increase count to the # of of kubernetes worker nodes you want (eg. 3) + +.. image:: K8s-Launch_new_VM_instance_to_create_a_Kubernetes_single_host_or_cluster.jpeg + +Select Ubuntu 16.04 as base image +--------------------------------- +Select "No" on "Create New Volume" + +.. image:: K8s-Select_Ubuntu_16.04_as_base_image.jpeg + +Select Flavor +------------- +The size of a Kubernetes host depends on the size of the ONAP deployment that +will be installed. + +As of the Beijing release a minimum of 3 x 32GB hosts will be needed to run a +full ONAP deployment (all components). + +If a small subset of ONAP components are being deployed for testing purposes, +then a single 16GB or 32GB host should suffice. + +.. image:: K8s-Select_Flavor.jpeg + +Networking +----------- + +.. image:: K8s-Networking.jpeg + +Security Group +--------------- + +.. image:: K8s-Security_Group.jpeg + +Key Pair +-------- +Use an existing key pair (e.g. onap_key), import an existing one or create a +new one to assign. + +.. image:: K8s-Key_Pair.jpeg + +Apply customization script for Kubernetes VM(s) +----------------------------------------------- + +Click :download:`openstack-k8s-node.sh <openstack-k8s-node.sh>` to +download the script. + +.. literalinclude:: openstack-k8s-node.sh + :language: bash + +This customization script will: + +* setup root access to the VM (comment out if you wish to disable this + capability and restrict access to ssh access only) +* install docker +* install kubectl +* install helm +* install nfs common (see configuration step here) + +.. note:: + Ensure you are using the correct versions as described in the + :ref:`cloud-setup-guide-label` + +Launch Instance +--------------- + +.. image:: K8s-Launch_Instance.jpeg + +Assign Floating IP for external access +-------------------------------------- + +.. image:: K8s-Assign_Floating_IP_for_external_access.jpeg + +.. image:: K8s-Manage_Floating_IP_Associations.jpeg + +.. image:: K8s-Launch_Instance.jpeg + +Setting up an NFS share for Multinode Kubernetes Clusters +========================================================= +The figure below illustrates a possible topology of a multinode Kubernetes +cluster. + +.. image:: k8s-topology.jpg + +One node, the Master Node, runs Rancher and Helm clients and connects to all +the Kubernetes nodes in the cluster. Kubernetes nodes, in turn, run Rancher, +Kubernetes and Tiller (Helm) agents, which receive, execute, and respond to +commands issued by the Master Node (e.g. kubectl or helm operations). Note that +the Master Node can be either a remote machine that the user can log in to or a +local machine (e.g. laptop, desktop) that has access to the Kubernetes cluster. + +Deploying applications to a Kubernetes cluster requires Kubernetes nodes to +share a common, distributed filesystem. One node in the cluster plays the role +of NFS Master (not to confuse with the Master Node that runs Rancher and Helm +clients, which is located outside the cluster), while all the other cluster +nodes play the role of NFS slaves. In the figure above, the left-most cluster +node plays the role of NFS Master (indicated by the crown symbol). To properly +set up an NFS share on Master and Slave nodes, the user can run the scripts +below. + +Click :download:`master_nfs_node.sh <master_nfs_node.sh>` to download the script. + +.. literalinclude:: master_nfs_node.sh + :language: bash + +Click :download:`slave_nfs_node.sh <slave_nfs_node.sh>` to download the script. + +.. literalinclude:: slave_nfs_node.sh + :language: bash + +The master_nfs_node.sh script runs in the NFS Master node and needs the list of +NFS Slave nodes as input, e.g.:: + + > sudo ./master_nfs_node.sh node1_ip node2_ip ... nodeN_ip + +The slave_nfs_node.sh script runs in each NFS Slave node and needs the IP of +the NFS Master node as input, e.g.:: + + > sudo ./slave_nfs_node.sh master_node_ip + +Configuration (Rancher and Kubernetes) +====================================== + +Access Rancher server via web browser +------------------------------------- +(e.g. http://10.12.6.16:8080/env/1a5/apps/stacks) + +.. image:: Access_Rancher_server_via_web_browser.jpeg + +Add Kubernetes Environment to Rancher +------------------------------------- + +1. Select “Manage Environments” + +.. image:: Add_Kubernetes_Environment_to_Rancher.png + +2. Select “Add Environment” + +.. image:: Select_Add_Environment.png + +3. Add unique name for your new Rancher environment + +4. Select the Kubernetes template + +5. Click "create" + +.. image:: Click_create.jpeg + +6. Select the new named environment (ie. SB4) from the dropdown list (top left). + +Rancher is now waiting for a Kubernetes Host to be added. + +.. image:: K8s-Assign_Floating_IP_for_external_access.jpeg + +Add Kubernetes Host +------------------- + +1. If this is the first (or only) host being added - click on the "Add a host" link + +.. image:: K8s-Assign_Floating_IP_for_external_access.jpeg + +and click on "Save" (accept defaults). + +.. image:: and_click_on_Save_accept_defaults.jpeg + +otherwise select INFRASTRUCTURE→ Hosts and click on "Add Host" + +.. image:: otherwise_select_INFRASTRUCTURE_Hosts_and_click_on_Add_Host.jpg + +2. Enter the management IP for the k8s VM (e.g. 10.0.0.4) that was just created. + +3. Click on “Copy to Clipboard” button + +4. Click on “Close” button + +.. image:: Click_on_Close_button.jpeg + +Without the 10.0.0.4 IP - the CATTLE_AGENT will be derived on the host - but it +may not be a routable IP. + +Configure Kubernetes Host +------------------------- + +1. Login to the new Kubernetes Host:: + + > ssh -i ~/oom-key.pem ubuntu@10.12.5.1 + The authenticity of host '10.12.5.172 (10.12.5.172)' can't be established. + ECDSA key fingerprint is SHA256:tqxayN58nCJKOJcWrEZzImkc0qKQHDDfUTHqk4WMcEI. + Are you sure you want to continue connecting (yes/no)? yes + Warning: Permanently added '10.12.5.172' (ECDSA) to the list of known hosts. + Welcome to Ubuntu 16.04.2 LTS (GNU/Linux 4.4.0-64-generic x86_64) + + * Documentation: https://help.ubuntu.com + * Management: https://landscape.canonical.com + * Support: https://ubuntu.com/advantage + + Get cloud support with Ubuntu Advantage Cloud Guest: + http://www.ubuntu.com/business/services/cloud + + 180 packages can be updated. + 100 updates are security updates. + + The programs included with the Ubuntu system are free software; + the exact distribution terms for each program are described in the + individual files in /usr/share/doc/*/copyright. + + Ubuntu comes with ABSOLUTELY NO WARRANTY, to the extent permitted by + applicable law. + + To run a command as administrator (user "root"), use "sudo <command>". + See "man sudo_root" for details. + + ubuntu@sb4-k8s-1:~$ + + +2. Paste Clipboard content and hit enter to install Rancher Agent:: + + ubuntu@sb4-k8s-1:~$ sudo docker run -e CATTLE_AGENT_IP="10.0.0.4“ --rm --privileged -v /var/run/docker.sock:/var/run/docker.sock -v /var/lib/rancher:/var/lib/rancher rancher/agent:v1.2.9 http://10.12.6.16:8080/v1/scripts/5D757C68BD0A2125602A:1514678400000:yKW9xHGJDLvq6drz2eDzR2mjato + Unable to find image 'rancher/agent:v1.2.9' locally + v1.2.9: Pulling From rancher/agent + b3e1c725a85f: Pull complete + 6071086409fc: Pull complete + d0ac3b234321: Pull complete + 87f567b5cf58: Pull complete + a63e24b217c4: Pull complete + d0a3f58caef0: Pull complete + 16914729cfd3: Pull complete + dc5c21984c5b: Pull complete + d7e8f9784b20: Pull complete + Digest: sha256:c21255ac4d94ffbc7b523F870F20ea5189b68Fa3d642800adb4774aab4748e66 + Status: Downloaded newer image for rancher/agent:v1.2.9 + + INFO: Running Agent Registration Process, CATTLE_URL=http://10.12.6.16:8080/v1 + INFO: Attempting to connect to: http://10.12.6.16:8080/v1 + INFO: http://10.12.6.16:8080/v1 is accessible + INFO: Inspecting host capabilities + INFO: Boot2Docker: false + INFO: Host writable: true + INFO: Token: xxxxxxxx + INFO: Running registration + INFO: Printing Environment + INFO: ENV: CATTLE_ACCESS_KEY=98B35AC484FBF820E0AD + INFO: ENV: CATTLE_AGENT_IP=10.0.9.4 + INFO: ENV: CATTLE_HOME=/var/lib/cattle + INFO: ENV: CATTLE_REGISTRATION_ACCESS_KEY=registrationToken + INFO: ENV: CATTLE_REGISTRATION_SECRET_KEY=xxxxxxx + INFO: ENV: CATTLE_SECRET_KEY=xxxxxxx + INFO: ENV: CATTLE_URL=http://10.12.6.16:8080/v1 + INFO: ENV: DETECTED_CATTLE_AGENT_IP=10.12.5.172 + INFO: ENV: RANCHER_AGENT_IMAGE=rancher/agent:v1.2.9 + INFO: Launched Rancher Agent: c27ee0f3dc4c783b0db647ea1f73c35b3843a4b8d60b96375b1a05aa77d83136 + ubuntu@sb4-k8s-1:~$ + +3. Return to Rancher environment (e.g. SB4) and wait for services to complete + (~ 10-15 mins) + +.. image:: Return_to_Rancher_environment_eg_SB4_and_wait_for_services_to_complete_10-15_mins.jpeg + +Configure kubectl and helm +========================== +In this example we are configuring kubectl and helm that have been installed +(as a convenience) onto the rancher and kubernetes hosts. Typically you would +install them both on your PC and remotely connect to the cluster. The following +procedure would remain the same. + +1. Click on CLI and then click on “Generate Config” + +.. image:: Click_on_CLI_and_then_click_on_Generate_Config.jpeg + +2. Click on “Copy to Clipboard” - wait until you see a "token" - do not copy + user+password - the server is not ready at that point + +.. image:: Click_on_Copy_to_Clipboard-wait_until_you_see_a_token-do_not_copy_user+password-the_server_is_not_ready_at_that_point.jpeg + +3. Create a .kube directory in user directory (if one does not exist):: + + ubuntu@sb4-kSs-1:~$ mkdir .kube + ubuntu@sb4-kSs-1:~$ vi .kube/config + +4. Paste contents of Clipboard into a file called “config” and save the file:: + + apiVersion: v1 + kind : Config + clusters: + - cluster: + api-version: v1 + insecure-skip-tls-verify: true + server: "https://10.12.6.16:8080/r/projects/1a7/kubernetes:6443" + name: "SB4" + contexts: + - context: + cluster: "SB4" + user: "SB4" + name: "SB4" + current-context: "SB4" + users: + - name: "SB4" + user: + token: "QmFzaWMgTlRBd01qZzBOemc)TkRrMk1UWkNOMFpDTlVFNlExcHdSa1JhVZreE5XSm1TRGhWU2t0Vk1sQjVhalZaY0dWaFVtZGFVMHQzWW1WWVJtVmpSQT09" + ~ + ~ + ~ + - INSERT -- + +5. Validate that kubectl is able to connect to the kubernetes cluster:: + + ubuntu@sb4-k8s-1:~$ kubectl config get-contexts + CURRENT NAME CLUSTER AUTHINFO NAMESPACE + * SB4 SB4 SB4 + ubuntu@sb4-kSs-1:~$ + +and show running pods:: + + ubuntu@sb4-k8s-1:~$ kubectl get pods --all-namespaces -o=wide + NAMESPACE NAME READY STATUS RESTARTS AGE IP NODE + kube-system heapster—7Gb8cd7b5 -q7p42 1/1 Running 0 13m 10.42.213.49 sb4-k8s-1 + kube-system kube-dns-5d7bM87c9-c6f67 3/3 Running 0 13m 10.42.181.110 sb4-k8s-1 + kube-system kubernetes-dashboard-f9577fffd-kswjg 1/1 Running 0 13m 10.42.105.113 sb4-k8s-1 + kube-system monitoring-grafana-997796fcf-vg9h9 1/1 Running 0 13m 10.42,141.58 sb4-k8s-1 + kube-system monitoring-influxdb-56chd96b-hk66b 1/1 Running 0 13m 10.4Z.246.90 sb4-k8s-1 + kube-system tiller-deploy-cc96d4f6b-v29k9 1/1 Running 0 13m 10.42.147.248 sb4-k8s-1 + ubuntu@sb4-k8s-1:~$ + +6. Validate helm is running at the right version. If not, an error like this + will be displayed:: + + ubuntu@sb4-k8s-1:~$ helm list + Error: incompatible versions c1ient[v2.8.2] server[v2.6.1] + ubuntu@sb4-k8s-1:~$ + +7. Upgrade the server-side component of helm (tiller) via `helm init --upgrade`:: + + ubuntu@sb4-k8s-1:~$ helm init --upgrade + Creating /home/ubuntu/.helm + Creating /home/ubuntu/.helm/repository + Creating /home/ubuntu/.helm/repository/cache + Creating /home/ubuntu/.helm/repository/local + Creating /home/ubuntu/.helm/plugins + Creating /home/ubuntu/.helm/starters + Creating /home/ubuntu/.helm/cache/archive + Creating /home/ubuntu/.helm/repository/repositories.yaml + Adding stable repo with URL: https://kubernetes-charts.storage.googleapis.com + Adding local repo with URL: http://127.0.0.1:8879/charts + $HELM_HOME has been configured at /home/ubuntu/.helm. + + Tiller (the Helm server-side component) has been upgraded to the current version. + Happy Helming! + ubuntu@sb4-k8s-1:~$ + +ONAP Deployment via OOM +======================= +Now that kubernetes and Helm are installed and configured you can prepare to +deploy ONAP. Follow the instructions in the README.md_ or look at the official +documentation to get started: + +- :ref:`quick-start-label` - deploy ONAP on an existing cloud +- :ref:`user-guide-label` - a guide for operators of an ONAP instance + + |