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3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../cloud/VM-created-with-option-Create-New-Volume-Yes-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> VM created with option Create New Volume Yes on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../cloud/What-is-an-OpenStack-domain-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> What is an OpenStack domain on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../cloud/What-is-an-OpenStack-project-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> What is an OpenStack project on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../cloud/How-to-create-a-Linux-VM-and-access-it-from-Windows-desktop-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> How to create a Linux VM and access it from Windows desktop on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a 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Cloud </span> </a> </li> <li class=md-nav__item> <a href=../cloud/Block-storage-and-object-storage-performance-limits-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> Block storage and object storage performance limits on 3Engines Cloud </span> </a> </li> </ul> </nav> </li> <li class="md-nav__item md-nav__item--nested"> <input class="md-nav__toggle md-toggle " type=checkbox id=__nav_3> <label class=md-nav__link for=__nav_3 id=__nav_3_label tabindex=0> <span class=md-ellipsis> Data Volume </span> <span class="md-nav__icon md-icon"></span> </label> <nav class=md-nav data-md-level=1 aria-labelledby=__nav_3_label aria-expanded=false> <label class=md-nav__title for=__nav_3> <span class="md-nav__icon md-icon"></span> Data Volume </label> <ul class=md-nav__list data-md-scrollfix> <li class=md-nav__item> <a href=../datavolume/datavolume.html.html class=md-nav__link> <span class=md-ellipsis> Overview </span> </a> </li> <li class=md-nav__item> <a 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</nav> </div> </div> </div> <div class="md-sidebar md-sidebar--secondary" data-md-component=sidebar data-md-type=toc> <div class=md-sidebar__scrollwrap> <div class=md-sidebar__inner> <nav class="md-nav md-nav--secondary" aria-label="On this page"> <label class=md-nav__title for=__toc> <span class="md-nav__icon md-icon"></span> On this page </label> <ul class=md-nav__list data-md-component=toc data-md-scrollfix> <li class=md-nav__item> <a href=#what-we-are-going-to-cover class=md-nav__link> <span class=md-ellipsis> What We are Going to Cover🔗 </span> </a> </li> <li class=md-nav__item> <a href=#prerequisites class=md-nav__link> <span class=md-ellipsis> Prerequisites🔗 </span> </a> </li> <li class=md-nav__item> <a href=#step-1-authenticate-to-the-cluster class=md-nav__link> <span class=md-ellipsis> Step 1 Authenticate to the cluster🔗 </span> </a> </li> <li class=md-nav__item> <a href=#step-2-apply-preliminary-configuration class=md-nav__link> <span class=md-ellipsis> Step 2 Apply preliminary configuration🔗 </span> </a> </li> <li class=md-nav__item> <a href=#step-3-run-jupyterhub-helm-chart-installation class=md-nav__link> <span class=md-ellipsis> Step 3 Run Jupyterhub Helm chart installation🔗 </span> </a> </li> <li class=md-nav__item> <a href=#step-4-retrieve-details-of-your-service class=md-nav__link> <span class=md-ellipsis> Step 4 Retrieve details of your service🔗 </span> </a> </li> <li class=md-nav__item> <a href=#step-5-run-on-https class=md-nav__link> <span class=md-ellipsis> Step 5 Run on HTTPS🔗 </span> </a> </li> <li class=md-nav__item> <a href=#what-to-do-next class=md-nav__link> <span class=md-ellipsis> What To Do Next🔗 </span> </a> </li> </ul> </nav> </div> </div> </div> <div class=md-content data-md-component=content> <article class="md-content__inner md-typeset"> <h1 id=installing-jupyterhub-on-magnum-kubernetes-cluster-in-3engines-cloud-cloud>Installing JupyterHub on Magnum Kubernetes Cluster in 3Engines Cloud Cloud<a href=#installing-jupyterhub-on-magnum-kubernetes-cluster-in-brand-name-cloud-name-cloud title="Permalink to this headline">🔗</a><a class=headerlink href=#installing-jupyterhub-on-magnum-kubernetes-cluster-in-3engines-cloud-cloud title="Permanent link">&para;</a></h1> <p>Jupyter notebooks are a popular method of presenting application code, as well as running exploratory experiments and analysis, conveniently, from a web browser. From a Jupyter notebook, one can run code, see the generated results in attractive visual form, and often also interactively interact with the generated output.</p> <p>JupyterHub is an open-source service that creates cloud-based Jupyter notebook servers, on-demand, enabiling users to run their notebooks without being concerned about the setup and required resources.</p> <p>It is straightforward to quickly deploy JupyterHub using Magnum Kubernetes service, which we present in this article.</p> <h2 id=what-we-are-going-to-cover>What We are Going to Cover<a href=#what-we-are-going-to-cover title="Permalink to this headline">🔗</a><a class=headerlink href=#what-we-are-going-to-cover title="Permanent link">&para;</a></h2> <blockquote> <ul> <li>Authenticate to the cluster</li> <li>Run Jupyterhub Helm chart installation</li> <li>Retrieve details of Jupyterhub service</li> <li>Run Jupyterhub on HTTPS</li> </ul> </blockquote> <h2 id=prerequisites>Prerequisites<a href=#prerequisites title="Permalink to this headline">🔗</a><a class=headerlink href=#prerequisites title="Permanent link">&para;</a></h2> <p>No. 1 <strong>Account</strong></p> <p>You need a 3Engines Cloud hosting account with access to the Horizon interface: <a href=https://horizon.3Engines.com>https://horizon.3Engines.com</a>.</p> <p>No. 2 <strong>kubectl up and running</strong></p> <p>For further instructions refer to <a href=How-To-Access-Kubernetes-Cluster-Post-Deployment-Using-Kubectl-On-3Engines-Cloud-OpenStack-Magnum.html.html>How To Access Kubernetes Cluster Post Deployment Using Kubectl On 3Engines Cloud OpenStack Magnum</a></p> <p>No. 3 <strong>Helm up and running</strong></p> <p>Helm is package manager for Kubernetes as explained in article</p> <p><a href=Deploying-Helm-Charts-on-Magnum-Kubernetes-Clusters-on-3Engines-Cloud-Cloud.html.html>Deploying Helm Charts on Magnum Kubernetes Clusters on 3Engines Cloud Cloud</a></p> <p>No. 4 <strong>A registered domain name available</strong></p> <p>To see the results of the installation, you should have a registered domain of your own. You will use it in Step 5 to run JupyterHub on HTTPS in a browser.</p> <h2 id=step-1-authenticate-to-the-cluster>Step 1 Authenticate to the cluster<a href=#step-1-authenticate-to-the-cluster title="Permalink to this headline">🔗</a><a class=headerlink href=#step-1-authenticate-to-the-cluster title="Permanent link">&para;</a></h2> <p>First of all, we need to authenticate to the cluster. It may so happen that you already have a cluster at your disposal and that the config file is already in place. In other words, you are able to execute the <strong>kubectl</strong> command immediately.</p> <p>You may also create a new cluster and call it, say, <em>jupyter-cluster</em>, as explained in Prerequisite No. 2. In that case, run from your local machine the following command to create config file in the present working directory:</p> <div class=highlight><pre><span></span><code><span id=__span-0-1><a id=__codelineno-0-1 name=__codelineno-0-1 href=#__codelineno-0-1></a>openstack coe cluster config jupyter-cluster
</span></code></pre></div> <p>This will output the command to set the KUBECONFIG <em>env</em>, which is a variable pointing to the location of your newly created cluster e.g.</p> <div class=highlight><pre><span></span><code><span id=__span-1-1><a id=__codelineno-1-1 name=__codelineno-1-1 href=#__codelineno-1-1></a>export KUBECONFIG=/home/eouser/config
</span></code></pre></div> <p>Run this command.</p> <h2 id=step-2-apply-preliminary-configuration>Step 2 Apply preliminary configuration<a href=#step-2-apply-preliminary-configuration title="Permalink to this headline">🔗</a><a class=headerlink href=#step-2-apply-preliminary-configuration title="Permanent link">&para;</a></h2> <p>OpenStack Magnum by default applies certain security restrictions for pods running on the cluster, in line with “least privileges” practice. JupyterHub will require some additional privileges in order to run correctly.</p> <p>We will start by creating a dedicated namespace for our JupyterHub Helm artifacts:</p> <div class=highlight><pre><span></span><code><span id=__span-2-1><a id=__codelineno-2-1 name=__codelineno-2-1 href=#__codelineno-2-1></a>kubectl create namespace jupyterhub
</span></code></pre></div> <p>The next step is to create a <em>RoleBinding</em> that will add a <em>magnum:podsecuritypolicy:privileged</em> ClusterRole to the ServiceAccount which will be later deployed by JupyterHub Helm chart in the <em>jupyterhub</em> namespace. This role will enable additional privileges to this Service Account. Create a file <em>jupyterhub-rolebinding.yaml</em> with the following contents:</p> <p><strong>jupyterhub-rolebinding.yaml</strong></p> <div class=highlight><pre><span></span><code><span id=__span-3-1><a id=__codelineno-3-1 name=__codelineno-3-1 href=#__codelineno-3-1></a>apiVersion: rbac.authorization.k8s.io/v1
</span><span id=__span-3-2><a id=__codelineno-3-2 name=__codelineno-3-2 href=#__codelineno-3-2></a>kind: RoleBinding
</span><span id=__span-3-3><a id=__codelineno-3-3 name=__codelineno-3-3 href=#__codelineno-3-3></a>metadata:
</span><span id=__span-3-4><a id=__codelineno-3-4 name=__codelineno-3-4 href=#__codelineno-3-4></a> name: jupyterhub-rolebinding
</span><span id=__span-3-5><a id=__codelineno-3-5 name=__codelineno-3-5 href=#__codelineno-3-5></a> namespace: jupyterhub
</span><span id=__span-3-6><a id=__codelineno-3-6 name=__codelineno-3-6 href=#__codelineno-3-6></a>subjects:
</span><span id=__span-3-7><a id=__codelineno-3-7 name=__codelineno-3-7 href=#__codelineno-3-7></a>- apiGroup: rbac.authorization.k8s.io
</span><span id=__span-3-8><a id=__codelineno-3-8 name=__codelineno-3-8 href=#__codelineno-3-8></a> kind: Group
</span><span id=__span-3-9><a id=__codelineno-3-9 name=__codelineno-3-9 href=#__codelineno-3-9></a> name: system:serviceaccounts
</span><span id=__span-3-10><a id=__codelineno-3-10 name=__codelineno-3-10 href=#__codelineno-3-10></a>roleRef:
</span><span id=__span-3-11><a id=__codelineno-3-11 name=__codelineno-3-11 href=#__codelineno-3-11></a> apiGroup: rbac.authorization.k8s.io
</span><span id=__span-3-12><a id=__codelineno-3-12 name=__codelineno-3-12 href=#__codelineno-3-12></a> kind: ClusterRole
</span><span id=__span-3-13><a id=__codelineno-3-13 name=__codelineno-3-13 href=#__codelineno-3-13></a> name: magnum:podsecuritypolicy:privileged
</span></code></pre></div> <p>Then apply with:</p> <div class=highlight><pre><span></span><code><span id=__span-4-1><a id=__codelineno-4-1 name=__codelineno-4-1 href=#__codelineno-4-1></a>kubectl apply -f jupyterhub-rolebinding.yaml
</span></code></pre></div> <h2 id=step-3-run-jupyterhub-helm-chart-installation>Step 3 Run Jupyterhub Helm chart installation<a href=#step-3-run-jupyterhub-helm-chart-installation title="Permalink to this headline">🔗</a><a class=headerlink href=#step-3-run-jupyterhub-helm-chart-installation title="Permanent link">&para;</a></h2> <p>To install Helm chart with the default settings use the below set of commands. This will</p> <blockquote> <ul> <li>download and update the JupyterHub repository, and</li> <li>install the chart to the <em>jupyterhub</em> namespace.</li> </ul> </blockquote> <div class=highlight><pre><span></span><code><span id=__span-5-1><a id=__codelineno-5-1 name=__codelineno-5-1 href=#__codelineno-5-1></a>helm repo add jupyterhub https://hub.jupyter.org/helm-chart/
</span><span id=__span-5-2><a id=__codelineno-5-2 name=__codelineno-5-2 href=#__codelineno-5-2></a>helm repo update
</span><span id=__span-5-3><a id=__codelineno-5-3 name=__codelineno-5-3 href=#__codelineno-5-3></a>helm install jupyterhub jupyterhub/jupyterhub --version 2.0.0 --namespace jupyterhub
</span></code></pre></div> <p>This is the result of successful Helm chart installation:</p> <p><a class=glightbox href=../_images/installation_done.png data-type=image data-width=100% data-height=auto data-desc-position=bottom><img alt=installation_done.png src=../_images/installation_done.png></a></p> <h2 id=step-4-retrieve-details-of-your-service>Step 4 Retrieve details of your service<a href=#step-4-retrieve-details-of-your-service title="Permalink to this headline">🔗</a><a class=headerlink href=#step-4-retrieve-details-of-your-service title="Permanent link">&para;</a></h2> <p>Once all the Helm resources get deployed to the <em>jupyterhub</em> namespace, we can view their state and definitions using standard <strong>kubectl</strong> commands.</p> <p>To view the services resource created by Helm, execute the following command:</p> <div class=highlight><pre><span></span><code><span id=__span-6-1><a id=__codelineno-6-1 name=__codelineno-6-1 href=#__codelineno-6-1></a>kubectl get services -n jupyterhub
</span></code></pre></div> <p>There are several resources created and a few services. The one most interesting to us is the proxy-public service of type LoadBalancer, which exposes JupyterHub to the public network:</p> <div class=highlight><pre><span></span><code><span id=__span-7-1><a id=__codelineno-7-1 name=__codelineno-7-1 href=#__codelineno-7-1></a>$ kubectl get services -n jupyterhub
</span><span id=__span-7-2><a id=__codelineno-7-2 name=__codelineno-7-2 href=#__codelineno-7-2></a>NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
</span><span id=__span-7-3><a id=__codelineno-7-3 name=__codelineno-7-3 href=#__codelineno-7-3></a>hub ClusterIP 10.254.209.133 &lt;none&gt; 8081/TCP 18d
</span><span id=__span-7-4><a id=__codelineno-7-4 name=__codelineno-7-4 href=#__codelineno-7-4></a>proxy-api ClusterIP 10.254.86.239 &lt;none&gt; 8001/TCP 18d
</span><span id=__span-7-5><a id=__codelineno-7-5 name=__codelineno-7-5 href=#__codelineno-7-5></a>proxy-public LoadBalancer 10.254.168.141 64.225.131.136 80:31027/TCP 18d
</span></code></pre></div> <p>The External IP of the proxy-public service will be initially in <em><pending></em> state. Refresh this command and after 2-5 minutes, you will see the floating IP assigned to the service. You can then type this IP into the browser.</p> <p>First, you will enter the login screen. Provide any combination of dummy login and password, after a moment JupyterHub gets loaded into the browser:</p> <p><a class=glightbox href=../_images/image2023-1-13_13-6-5.png data-type=image data-width=100% data-height=auto data-desc-position=bottom><img alt=image2023-1-13_13-6-5.png src=../_images/image2023-1-13_13-6-5.png></a></p> <p>JupyterHub is now working on HTTP and a direct IP address and you can use it as is.</p> <p>Warning</p> <p>If in the next step you start running a JupyterHub on HTTPS, you will not be able to run it as a HTTP service unless it has been relaunched.</p> <h2 id=step-5-run-on-https>Step 5 Run on HTTPS<a href=#step-5-run-on-https title="Permalink to this headline">🔗</a><a class=headerlink href=#step-5-run-on-https title="Permanent link">&para;</a></h2> <p>JupyterHub Helm chart enables HTTPS deployments natively. Once we deployed the chart above, we can simply upgrade the chart to enable serving it on HTTPS. Under the hood, it will generate the certificates using Let’s Encrypt certificate authority.</p> <p>In order to do enable HTTPS, prepare a file for the configuration override e.g. <em>jupyter-https-values.yaml</em> with the following contents (adjust the email and domain to your own):</p> <p><strong>jupyter-https-values.yaml</strong></p> <div class=highlight><pre><span></span><code><span id=__span-8-1><a id=__codelineno-8-1 name=__codelineno-8-1 href=#__codelineno-8-1></a>proxy:
</span><span id=__span-8-2><a id=__codelineno-8-2 name=__codelineno-8-2 href=#__codelineno-8-2></a> https:
</span><span id=__span-8-3><a id=__codelineno-8-3 name=__codelineno-8-3 href=#__codelineno-8-3></a> enabled: true
</span><span id=__span-8-4><a id=__codelineno-8-4 name=__codelineno-8-4 href=#__codelineno-8-4></a> hosts:
</span><span id=__span-8-5><a id=__codelineno-8-5 name=__codelineno-8-5 href=#__codelineno-8-5></a> - mysampledomain.info
</span><span id=__span-8-6><a id=__codelineno-8-6 name=__codelineno-8-6 href=#__codelineno-8-6></a> letsencrypt:
</span><span id=__span-8-7><a id=__codelineno-8-7 name=__codelineno-8-7 href=#__codelineno-8-7></a> contactEmail: [email protected]
</span></code></pre></div> <p>Then upgrade the chart with the following <strong>upgrade</strong> command:</p> <div class=highlight><pre><span></span><code><span id=__span-9-1><a id=__codelineno-9-1 name=__codelineno-9-1 href=#__codelineno-9-1></a>helm upgrade -n jupyterhub jupyterhub jupyterhub/jupyterhub -f jupyter-https-values.yaml
</span></code></pre></div> <p>As noted in Prerequisite No. 4, you should have an available registered domain so that you can now point it to address that the LoadBalancer for service <strong>proxy-public</strong> returned above. Please ensure that the records in your domain registrar are correctly associated. Concretely, we’ve associated the A record set of <em>mysampledomain.info</em> with the record <strong>64.225.131.136</strong> (the public IP address or our service). Once this is done, the JupyterHub gets served on HTTPS:</p> <p><a class=glightbox href=../_images/image2023-2-6_15-25-4.png data-type=image data-width=100% data-height=auto data-desc-position=bottom><img alt=image2023-2-6_15-25-4.png src=../_images/image2023-2-6_15-25-4.png></a></p> <h2 id=what-to-do-next>What To Do Next<a href=#what-to-do-next title="Permalink to this headline">🔗</a><a class=headerlink href=#what-to-do-next title="Permanent link">&para;</a></h2> <p>For the production environment: replace the dummy authenticator with an alternative authentication mechanism, ensure persistence by e.g. connecting to a Postgres database. These steps are beyond the scope of this article.</p> </article> </div> <script>var target=document.getElementById(location.hash.slice(1));target&&target.name&&(target.checked=target.name.startsWith("__tabbed_"))</script> </div> <button type=button class="md-top md-icon" data-md-component=top hidden> <svg xmlns=http://www.w3.org/2000/svg viewbox="0 0 24 24"><path d="M13 20h-2V8l-5.5 5.5-1.42-1.42L12 4.16l7.92 7.92-1.42 1.42L13 8z"/></svg> Back to top </button> </main> <footer class=md-footer> <div class="md-footer-meta md-typeset"> <div class="md-footer-meta__inner md-grid"> <div class=md-copyright> Made with <a href=https://squidfunk.github.io/mkdocs-material/ target=_blank rel=noopener> Material for MkDocs </a> </div> </div> </div> </footer> </div> <div class=md-dialog data-md-component=dialog> <div class="md-dialog__inner md-typeset"></div> </div> <script id=__config type=application/json>{"base": "..", "features": ["content.code.annotate", "content.code.copy", "content.tooltips", "navigation.tabs", "navigation.sections", "navigation.footer", "navigation.indexes", "navigation.sections", "navigation.top", "navigation.tracking", "search.highlight", "search.share", "search.suggest", "toc.follow"], "search": "../assets/javascripts/workers/search.d50fe291.min.js", "tags": null, "translations": {"clipboard.copied": "Copied to clipboard", "clipboard.copy": "Copy to clipboard", "search.result.more.one": "1 more on this page", "search.result.more.other": "# more on this page", "search.result.none": "No matching documents", "search.result.one": "1 matching document", "search.result.other": "# matching documents", "search.result.placeholder": "Type to start searching", "search.result.term.missing": "Missing", "select.version": "Select version"}, "version": null}</script> <script src=../assets/javascripts/bundle.13a4f30d.min.js></script> <script id="init-glightbox">const lightbox = GLightbox({"touchNavigation": false, "loop": false, "zoomable": true, "draggable": true, "openEffect": "zoom", "closeEffect": "zoom", "slideEffect": "slide"});
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