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64 lines
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on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../cloud/How-to-start-a-VM-from-a-snapshot-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> How to start a VM from a snapshot on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../cloud/Status-Power-State-and-dependences-in-billing-of-instances-VMs-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> Status Power State and dependencies in billing of instance VMs on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../cloud/How-to-upload-your-custom-image-using-OpenStack-CLI-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> How to upload your custom image using OpenStack CLI on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../cloud/VM-created-with-option-Create-New-Volume-No-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> VM created with option Create New Volume No on 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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3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../cloud/How-to-start-a-VM-from-instance-snapshot-using-Horizon-dashboard-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> How to start a VM from instance snapshot using Horizon dashboard on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../cloud/How-to-create-a-VM-using-the-OpenStack-CLI-client-on-3Engines-Cloud-cloud.html.html class=md-nav__link> <span class=md-ellipsis> How to create a VM using the OpenStack CLI client on 3Engines Cloud cloud </span> </a> </li> <li class=md-nav__item> <a href=../cloud/OpenStack-user-roles-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> OpenStack User Roles on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../cloud/Resizing-a-virtual-machine-using-OpenStack-Horizon-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> Resizing a virtual machine using OpenStack Horizon on 3Engines 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-create-a-magnum-kubernetes-cluster-with-nginx-ingress-enabled class=md-nav__link> <span class=md-ellipsis> Step 1 Create a Magnum Kubernetes cluster with NGINX Ingress enabled🔗 </span> </a> </li> <li class=md-nav__item> <a href=#step-2-creating-services-for-nginx-and-apache-webserver class=md-nav__link> <span class=md-ellipsis> Step 2 Creating services for Nginx and Apache webserver🔗 </span> </a> </li> <li class=md-nav__item> <a href=#step-3-create-ingress-resource class=md-nav__link> <span class=md-ellipsis> Step 3 Create Ingress Resource🔗 </span> </a> </li> <li class=md-nav__item> <a href=#step-4-verify-that-it-works class=md-nav__link> <span class=md-ellipsis> Step 4 Verify that it works🔗 </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=using-kubernetes-ingress-on-3engines-cloud-openstack-magnum>Using Kubernetes Ingress on 3Engines Cloud OpenStack Magnum<a href=#using-kubernetes-ingress-on-brand-name-cloud-name-openstack-magnum title="Permalink to this headline">🔗</a><a class=headerlink href=#using-kubernetes-ingress-on-3engines-cloud-openstack-magnum title="Permanent link">¶</a></h1> <p>The Ingress feature in Kubernetes can be associated with routing the traffic from outside of the cluster to the services within the cluster. With Ingress, multiple Kubernetes services can be exposed using a single Load Balancer.</p> <p>In this article, we will provide insight into how Ingress is implemented on the cloud. We will also demonstrate a practical example of exposing Kubernetes services using Ingress on the cloud. In the end, you will be able to create one or more sites and services running on a Kubernetes cluster. The services you create in this way will</p> <blockquote> <ul> <li>run on the same IP address without need of creating extra LoadBalancer per service and will also</li> <li>automatically enjoy all of the Kubernetes cluster benefits – reliability, scalability etc.</li> </ul> </blockquote> <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">¶</a></h2> <blockquote> <ul> <li>Create Magnum Kubernetes cluster with NGINX Ingress enabled</li> <li>Build and expose Nginx and Apache webservers for testing</li> <li>Create Ingress Resource</li> <li>Verify that Ingress can access both testing servers</li> </ul> </blockquote> <h2 id=prerequisites>Prerequisites<a href=#prerequisites title="Permalink to this headline">🔗</a><a class=headerlink href=#prerequisites title="Permanent link">¶</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>Basic knowledge of Kubernetes fundamentals</strong></p> <p>Basic knowledge of Kubernetes fundamentals will come handy: cluster creation, pods, deployments, services and so on.</p> <p>No. 3 <strong>Access to kubectl command</strong></p> <p>To install necessary software (if you haven’t done so already), see article <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>The net result of following instructions in that and the related articles will be</p> <blockquote> <ul> <li>a cluster formed, healthy and ready to be used, as well as</li> <li>enabling access to the cluster from the local machine (i.e. having <em>kubectl</em> command operational).</li> </ul> </blockquote> <h2 id=step-1-create-a-magnum-kubernetes-cluster-with-nginx-ingress-enabled>Step 1 Create a Magnum Kubernetes cluster with NGINX Ingress enabled<a href=#step-1-create-a-magnum-kubernetes-cluster-with-nginx-ingress-enabled title="Permalink to this headline">🔗</a><a class=headerlink href=#step-1-create-a-magnum-kubernetes-cluster-with-nginx-ingress-enabled title="Permanent link">¶</a></h2> <p>When we create a Kubernetes cluster on the cloud, we can deploy it with a preconfigured ingress setup. This requires minimal setting and is described in this help section: <a href=How-to-Create-a-Kubernetes-Cluster-Using-3Engines-Cloud-OpenStack-Magnum.html.html>How to Create a Kubernetes Cluster Using 3Engines Cloud OpenStack Magnum</a>.</p> <p>Such a cluster is deployed with an NGINX <em>ingress controller</em> and the default <em>ingress backend</em>. The role of the controller is to enable the provisioning of the infrastructure e.g. the (virtual) load balancer. The role of the backend is to provide access to this infrastructure in line with the rules defined by the <strong>ingress resource</strong> (explained later).</p> <p>We can verify the availability of these artifacts by typing the following command:</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>kubectl get pods -n kube-system
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</span></code></pre></div> <p>The output should be similar to the one below. We see that there is an ingress controller created, and also an ingress backend, both running as pods on our cluster.</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>kubectl get pods -n kube-system
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</span><span id=__span-1-2><a id=__codelineno-1-2 name=__codelineno-1-2 href=#__codelineno-1-2></a>NAME READY STATUS RESTARTS AGE
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</span><span id=__span-1-3><a id=__codelineno-1-3 name=__codelineno-1-3 href=#__codelineno-1-3></a>...
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</span><span id=__span-1-4><a id=__codelineno-1-4 name=__codelineno-1-4 href=#__codelineno-1-4></a>magnum-nginx-ingress-controller-zxgj8 1/1 Running 0 65d
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</span><span id=__span-1-5><a id=__codelineno-1-5 name=__codelineno-1-5 href=#__codelineno-1-5></a>magnum-nginx-ingress-default-backend-9dfb4c685-8fjdv 1/1 Running 0 83d
|
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</span><span id=__span-1-6><a id=__codelineno-1-6 name=__codelineno-1-6 href=#__codelineno-1-6></a>...
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</span></code></pre></div> <p>There is also an ingress class available in the default namespace:</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 get ingressclass
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</span><span id=__span-2-2><a id=__codelineno-2-2 name=__codelineno-2-2 href=#__codelineno-2-2></a>NAME CONTROLLER PARAMETERS AGE
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</span><span id=__span-2-3><a id=__codelineno-2-3 name=__codelineno-2-3 href=#__codelineno-2-3></a>nginx k8s.io/ingress-nginx <none> 7m36s
|
||
</span></code></pre></div> <h2 id=step-2-creating-services-for-nginx-and-apache-webserver>Step 2 Creating services for Nginx and Apache webserver<a href=#step-2-creating-services-for-nginx-and-apache-webserver title="Permalink to this headline">🔗</a><a class=headerlink href=#step-2-creating-services-for-nginx-and-apache-webserver title="Permanent link">¶</a></h2> <p>You are now going to build and expose two minimal applications:</p> <blockquote> <ul> <li>Nginx server</li> <li>Apache webserver</li> </ul> </blockquote> <p>They will be both exposed from a single public IP address using a single default ingress Load Balancer. The web pages served from each server will be accessible in the browser with a unified routing scheme. In a similar fashion, one could mix and match applications written in a variety of other technologies.</p> <p>First, let’s create the Nginx server app. For brevity, we use the command line with default settings:</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>kubectl create deployment nginx-web --image=nginx
|
||
</span><span id=__span-3-2><a id=__codelineno-3-2 name=__codelineno-3-2 href=#__codelineno-3-2></a>kubectl expose deployment nginx-web --type=NodePort --port=80
|
||
</span></code></pre></div> <p>Similarly, we create the Apache app:</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 create deployment apache-web --image=httpd
|
||
</span><span id=__span-4-2><a id=__codelineno-4-2 name=__codelineno-4-2 href=#__codelineno-4-2></a>kubectl expose deployment apache-web --type=NodePort --port=80
|
||
</span></code></pre></div> <p>The above actions result in creating a service for each app, which can be inspected using the below command. Behind each service, there is a deployment and a running pod.</p> <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>kubectl get services
|
||
</span></code></pre></div> <p>You should see an output similar to the following:</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
|
||
</span><span id=__span-6-2><a id=__codelineno-6-2 name=__codelineno-6-2 href=#__codelineno-6-2></a>NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
|
||
</span><span id=__span-6-3><a id=__codelineno-6-3 name=__codelineno-6-3 href=#__codelineno-6-3></a>apache-web NodePort 10.254.80.182 <none> 80:32660/TCP 75s
|
||
</span><span id=__span-6-4><a id=__codelineno-6-4 name=__codelineno-6-4 href=#__codelineno-6-4></a>kubernetes ClusterIP 10.254.0.1 <none> 443/TCP 84d
|
||
</span><span id=__span-6-5><a id=__codelineno-6-5 name=__codelineno-6-5 href=#__codelineno-6-5></a>nginx-web NodePort 10.254.101.230 <none> 80:32532/TCP 36m
|
||
</span></code></pre></div> <p>The services were created with the type <em>NodePort</em>, which is a required type to work with ingress. Therefore, they are not yet exposed under a public IP. The servers are, however, already running and serving their default welcome pages.</p> <p>You could verify that by assigning a floating IP to one of the nodes (see <a href=../networking/How-to-Add-or-Remove-Floating-IPs-to-your-VM-on-3Engines-Cloud.html.html>How to Add or Remove Floating IP’s to your VM on 3Engines Cloud</a>). Then SSH to the node and run the following command:</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>curl <name-of-node>:<port-number>
|
||
</span></code></pre></div> <p>E.g. for the scenario above we see:</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>curl ingress-tqwzjwu2lw7p-node-1:32660
|
||
</span><span id=__span-8-2><a id=__codelineno-8-2 name=__codelineno-8-2 href=#__codelineno-8-2></a><html><body><h1>It works!</h1></body></html>
|
||
</span></code></pre></div> <h2 id=step-3-create-ingress-resource>Step 3 Create Ingress Resource<a href=#step-3-create-ingress-resource title="Permalink to this headline">🔗</a><a class=headerlink href=#step-3-create-ingress-resource title="Permanent link">¶</a></h2> <p>To expose application to a public IP address, you will need to define an Ingress Resource. Since both applications will be available from the same IP address, the ingress resource will define the detailed rules of what gets served in which route. In this example, the <em>/apache</em> route will be served from the Apache service, and all other routes will be served by the Nginx service.</p> <p>Note</p> <p>There are multiple ways the routes can be configured, we present here just a fraction of the capability.</p> <p>Create a YAML file called <em>my-ingress-resource.yaml</em> with the following contents:</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>apiVersion: networking.k8s.io/v1
|
||
</span><span id=__span-9-2><a id=__codelineno-9-2 name=__codelineno-9-2 href=#__codelineno-9-2></a>kind: Ingress
|
||
</span><span id=__span-9-3><a id=__codelineno-9-3 name=__codelineno-9-3 href=#__codelineno-9-3></a>metadata:
|
||
</span><span id=__span-9-4><a id=__codelineno-9-4 name=__codelineno-9-4 href=#__codelineno-9-4></a> name: example-ingress
|
||
</span><span id=__span-9-5><a id=__codelineno-9-5 name=__codelineno-9-5 href=#__codelineno-9-5></a> annotations:
|
||
</span><span id=__span-9-6><a id=__codelineno-9-6 name=__codelineno-9-6 href=#__codelineno-9-6></a> nginx.ingress.kubernetes.io/rewrite-target: /
|
||
</span><span id=__span-9-7><a id=__codelineno-9-7 name=__codelineno-9-7 href=#__codelineno-9-7></a>spec:
|
||
</span><span id=__span-9-8><a id=__codelineno-9-8 name=__codelineno-9-8 href=#__codelineno-9-8></a> ingressClassName: nginx
|
||
</span><span id=__span-9-9><a id=__codelineno-9-9 name=__codelineno-9-9 href=#__codelineno-9-9></a> rules:
|
||
</span><span id=__span-9-10><a id=__codelineno-9-10 name=__codelineno-9-10 href=#__codelineno-9-10></a> - http:
|
||
</span><span id=__span-9-11><a id=__codelineno-9-11 name=__codelineno-9-11 href=#__codelineno-9-11></a> paths:
|
||
</span><span id=__span-9-12><a id=__codelineno-9-12 name=__codelineno-9-12 href=#__codelineno-9-12></a> - path: /*
|
||
</span><span id=__span-9-13><a id=__codelineno-9-13 name=__codelineno-9-13 href=#__codelineno-9-13></a> pathType: Prefix
|
||
</span><span id=__span-9-14><a id=__codelineno-9-14 name=__codelineno-9-14 href=#__codelineno-9-14></a> backend:
|
||
</span><span id=__span-9-15><a id=__codelineno-9-15 name=__codelineno-9-15 href=#__codelineno-9-15></a> service:
|
||
</span><span id=__span-9-16><a id=__codelineno-9-16 name=__codelineno-9-16 href=#__codelineno-9-16></a> name: nginx-web
|
||
</span><span id=__span-9-17><a id=__codelineno-9-17 name=__codelineno-9-17 href=#__codelineno-9-17></a> port:
|
||
</span><span id=__span-9-18><a id=__codelineno-9-18 name=__codelineno-9-18 href=#__codelineno-9-18></a> number: 80
|
||
</span><span id=__span-9-19><a id=__codelineno-9-19 name=__codelineno-9-19 href=#__codelineno-9-19></a> - path: /apache
|
||
</span><span id=__span-9-20><a id=__codelineno-9-20 name=__codelineno-9-20 href=#__codelineno-9-20></a> pathType: Prefix
|
||
</span><span id=__span-9-21><a id=__codelineno-9-21 name=__codelineno-9-21 href=#__codelineno-9-21></a> backend:
|
||
</span><span id=__span-9-22><a id=__codelineno-9-22 name=__codelineno-9-22 href=#__codelineno-9-22></a> service:
|
||
</span><span id=__span-9-23><a id=__codelineno-9-23 name=__codelineno-9-23 href=#__codelineno-9-23></a> name: apache-web
|
||
</span><span id=__span-9-24><a id=__codelineno-9-24 name=__codelineno-9-24 href=#__codelineno-9-24></a> port:
|
||
</span><span id=__span-9-25><a id=__codelineno-9-25 name=__codelineno-9-25 href=#__codelineno-9-25></a> number: 80
|
||
</span></code></pre></div> <p>And deploy with:</p> <div class=highlight><pre><span></span><code><span id=__span-10-1><a id=__codelineno-10-1 name=__codelineno-10-1 href=#__codelineno-10-1></a>kubectl apply -f my-ingress-resource.yaml
|
||
</span></code></pre></div> <p>After some time (usually 2 to 5 minutes), verify that the floating IP has been assigned to the ingress:</p> <div class=highlight><pre><span></span><code><span id=__span-11-1><a id=__codelineno-11-1 name=__codelineno-11-1 href=#__codelineno-11-1></a>kubectl get ingress
|
||
</span><span id=__span-11-2><a id=__codelineno-11-2 name=__codelineno-11-2 href=#__codelineno-11-2></a>NAME CLASS HOSTS ADDRESS PORTS AGE
|
||
</span><span id=__span-11-3><a id=__codelineno-11-3 name=__codelineno-11-3 href=#__codelineno-11-3></a>example-ingress nginx * 64.225.130.77 80 3m16s
|
||
</span></code></pre></div> <p>Note</p> <p>The address <strong>64.225.130.77</strong> is generated randomly and in your case it will be different. Be sure to copy and use the address shown by <strong>kubectl get ingress</strong>.</p> <h2 id=step-4-verify-that-it-works>Step 4 Verify that it works<a href=#step-4-verify-that-it-works title="Permalink to this headline">🔗</a><a class=headerlink href=#step-4-verify-that-it-works title="Permanent link">¶</a></h2> <p>Copy the ingress floating IP in the browser, followed by some example routes. You should see an output similar to the one below. Here is the screenshot for the <em>/apache</em> route:</p> <p><a class=glightbox href=../_images/apache_route.png data-type=image data-width=100% data-height=auto data-desc-position=bottom><img alt=apache_route.png src=../_images/apache_route.png></a></p> <p>This screenshot shows what happens on any other route – it defaults to Nginx:</p> <p><a class=glightbox href=../_images/any_other_route.png data-type=image data-width=100% data-height=auto data-desc-position=bottom><img alt=any_other_route.png src=../_images/any_other_route.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">¶</a></h2> <p>You now have two of the most popular web servers installed as services within a Kubernetes cluster. Here are some ideas how to use this setup:</p> <p><strong>Create another service on the same server</strong></p> <p>To create another service under the same IP address, repeat the entire procedure with another endpoint name instead of <em>/apache</em>. Don’t forget to add the apropriate entry into the YAML file.</p> <p><strong>Add other endpoints for use with Nginx</strong></p> <p>You can create other endpoints and use Nginx as the basic server instead of Apache.</p> <p><strong>Use images other than nginx and httpd</strong></p> <p>There are many sources of containers on the Internet but the most popular catalog is <a href="https://hub.docker.com/search?q=">dockerhub.com</a>. It contains operating systems images with preinstalled software you want to use, which will save you the effort of downloading and testing the installation.</p> <p><strong>Microservices</strong></p> <p>Instead of putting all of the code and data onto one virtual machine, the Kubernetes way is to deploy multiple custom containers. A typical setup would be like this:</p> <blockquote> <ul> <li>pod No. 1 would contain a database, say, MariaDB, as a backend,</li> <li>pod No. 2 could contain PHPMyAdmin for a front end to the database,</li> <li>pod No. 3 could contain installation of WordPress, which is the front end for the site visitor</li> <li>pod No. 4 could contain your proprietary code for WordPress plugins.</li> </ul> </blockquote> <p>Each of these pods will take code from a specialized image. If you want to edit a part of the code, you just update the relevant Docker image on docker hub and redeploy.</p> <p><strong>Use DNS to create a domain name for the server</strong></p> <p>You can use a DNS service to connect a proper domain name to the IP address used in this article. With the addition of a Cert Manager and a free service such as Let’s Encrypt, an ingress will be running HTTPS protocol in a straightforward way.</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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