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<!DOCTYPE HTML>
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<title>Scale app · IBM Cloud Kubernetes Service Lab</title>
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<ul class="summary">
<li class="header">Introduction</li>
<li class="chapter " data-level="1.1" data-path="./">
<a href="./">
<b>1.1.</b>
Lab Overview
</a>
</li>
<li class="header">Preparation</li>
<li class="chapter " data-level="2.1" data-path="prepare-prereq.html">
<a href="prepare-prereq.html">
<b>2.1.</b>
Pre-Requisites
</a>
</li>
<li class="chapter " data-level="2.2" data-path="prepare-plugins.html">
<a href="prepare-plugins.html">
<b>2.2.</b>
Install Container Plugins
</a>
</li>
<li class="chapter " data-level="2.3" data-path="prepare-cli.html">
<a href="prepare-cli.html">
<b>2.3.</b>
Main command lines
</a>
</li>
<li class="chapter " data-level="2.4" data-path="prepare-get-cluster.html">
<a href="prepare-get-cluster.html">
<b>2.4.</b>
Get a cluster
</a>
</li>
<li class="header">Lab 1 - Deploy an app in a Kubernetes cluster</li>
<li class="chapter " data-level="3.1" data-path="view-cluster.html">
<a href="view-cluster.html">
<b>3.1.</b>
View your cluster
</a>
</li>
<li class="chapter " data-level="3.2" data-path="kube-dashboard.html">
<a href="kube-dashboard.html">
<b>3.2.</b>
Kubernetes Dashboard
</a>
</li>
<li class="chapter " data-level="3.3" data-path="connect-via-cli.html">
<a href="connect-via-cli.html">
<b>3.3.</b>
Connect via CLI
</a>
</li>
<li class="chapter " data-level="3.4" data-path="get-app.html">
<a href="get-app.html">
<b>3.4.</b>
Get and run the app locally
</a>
</li>
<li class="chapter " data-level="3.5" data-path="docker-build.html">
<a href="docker-build.html">
<b>3.5.</b>
Build docker image
</a>
</li>
<li class="chapter " data-level="3.6" data-path="docker-push.html">
<a href="docker-push.html">
<b>3.6.</b>
Push docker image
</a>
</li>
<li class="chapter " data-level="3.7" data-path="deploy-app.html">
<a href="deploy-app.html">
<b>3.7.</b>
Deploy app
</a>
</li>
<li class="chapter active" data-level="3.8" data-path="scale-app.html">
<a href="scale-app.html">
<b>3.8.</b>
Scale app
</a>
</li>
<li class="chapter " data-level="3.9" data-path="connect-database.html">
<a href="connect-database.html">
<b>3.9.</b>
Optional: Connect to a database
</a>
</li>
<li class="chapter " data-level="3.10" data-path="test-resiliency.html">
<a href="test-resiliency.html">
<b>3.10.</b>
Optional: Test the resiliency
</a>
</li>
<li class="chapter " data-level="3.11" data-path="clean-up.html">
<a href="clean-up.html">
<b>3.11.</b>
Clean up
</a>
</li>
<li class="header">Lab 2 - DevOps and Helm charts</li>
<li class="chapter " data-level="4.1" data-path="devops-helm.html">
<a href="devops-helm.html">
<b>4.1.</b>
Deploy with Helm
</a>
</li>
<li class="chapter " data-level="4.2" data-path="devops-continuous-delivery.html">
<a href="devops-continuous-delivery.html">
<b>4.2.</b>
Deploy with Continuous Delivery
</a>
</li>
<li class="chapter " data-level="4.3" data-path="monitor-debug.html">
<a href="monitor-debug.html">
<b>4.3.</b>
Optional: Troubleshoot and Debug
</a>
</li>
<li class="header">Lab 3 - Monitor your cluster</li>
<li class="chapter " data-level="5.1" data-path="monitor-cluster-logs.html">
<a href="monitor-cluster-logs.html">
<b>5.1.</b>
Cluster Logs
</a>
</li>
<li class="chapter " data-level="5.2" data-path="monitor-cluster-metrics.html">
<a href="monitor-cluster-metrics.html">
<b>5.2.</b>
Monitoring your cluster
</a>
</li>
<li class="header">Advanced</li>
<li class="chapter " data-level="6.1" data-path="appendix-create-cluster-cli.html">
<a href="appendix-create-cluster-cli.html">
<b>6.1.</b>
Create a cluster with CLI
</a>
</li>
<li class="chapter " data-level="6.2" data-path="appendix-create-cluster-ui.html">
<a href="appendix-create-cluster-ui.html">
<b>6.2.</b>
Create a cluster in the Console
</a>
</li>
<li class="chapter " data-level="6.3" data-path="weavescope.html">
<a href="weavescope.html">
<b>6.3.</b>
Weavescope
</a>
</li>
<li class="chapter " data-level="6.4" data-path="appendix-terraform.html">
<a href="appendix-terraform.html">
<b>6.4.</b>
Provisioning with Terraform
</a>
</li>
<li class="chapter " data-level="6.5" data-path="calico.html">
<a href="calico.html">
<b>6.5.</b>
Controlling traffic with network policies
</a>
</li>
<li class="chapter " data-level="6.6" data-path="appendix.html">
<a href="appendix.html">
<b>6.6.</b>
Appendix
</a>
</li>
<li class="header">Resources</li>
<li class="chapter " data-level="7.1" data-path="resources.html">
<a href="resources.html">
<b>7.1.</b>
Resources
</a>
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Published with GitBook
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<h1>
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<a href="." >Scale app</a>
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<h1 id="scale-the-application-using-the-replica">Scale the application using the replica</h1>
<p>The application was deployed with 2 replicas. Let's scale it to 3 replicas.</p>
<ol>
<li><p>Let's scale up to 3 replicas</p>
<pre class="language-"><code class="lang-sh"> kubectl scale --replicas<span class="token operator">=</span>3 deployment/mytodos
</code></pre>
</li>
<li><p>Then, inspect your Pods again.</p>
<pre class="language-"><code class="lang-sh"> kubectl get pods
</code></pre>
<p> You should now see 3 pods.</p>
</li>
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