The latest articles on Debug School by Nallasivan (@shivaarchie). https://www.debug.school/shivaarchie https://www.debug.school/images/CPDdQlGexClW9WOTxwLbEDeLKxuBxqind7bvkmstzXo/rs:fill:90:90/g:sm/mb:500000/ar:1/aHR0cHM6Ly90aGVw/cmFjdGljYWxkZXYu/czMuYW1hem9uYXdz/LmNvbS9pLzk5bXZs/c2Z1NXRmajltN2t1/MjVkLnBuZw https://www.debug.school/shivaarchie en Nallasivan Mon, 26 Jun 2023 06:43:54 +0000 https://www.debug.school/shivaarchie/my-note-helm-basics-la7 https://www.debug.school/shivaarchie/my-note-helm-basics-la7 <h2> What is helm? </h2> <div class="highlight js-code-highlight"> <pre class="highlight plaintext"><code> Helm is package manager to Kubernetes resources. it handles the complexity of managing the Charts/packages for Kubernetes resources using simple commands like install, upgrade, uninstall etc.it is a tool which connects to Chart/Package repositories and download the Charts/Packages and deploy it into the k8s cluster.<br> </code></pre> </div> <h2> <br> <br> <br> Top 5 reason for using helm?<br> </h2> <ol> <li>Managing the complexities of deployments of multiple K8s resource yml files</li> <li>easy to have different configuration for different environment like prod, stag, dev with common templates</li> <li>managing the dependencies of a chart </li> <li>easy to create version, share the chart/app to others and publish it in repository.</li> <li>support for parametrized templates to easy the configuration update</li> </ol> <h2> How helm works? Inlcude some pic </h2> <p>Helm is a tool which connects to repository and download the packages/charts and install it into the k8s cluster using kubeconfig. it applies the configuration from values.yml and updated it on k8s resource templates then deploy them into the cluster</p> <p><a href="https://www.debug.school/images/vLHBoW8z_rA33yMT_WlJdmwG49cm1jst754575nPj8s/w:880/mb:500000/ar:1/aHR0cHM6Ly93d3cu/ZGVidWcuc2Nob29s/L3VwbG9hZHMvYXJ0/aWNsZXMvOXh5bTQ1/Y3pxYTJ3Z240bWx6/enAucG5n" class="article-body-image-wrapper"><img src="https://www.debug.school/images/vLHBoW8z_rA33yMT_WlJdmwG49cm1jst754575nPj8s/w:880/mb:500000/ar:1/aHR0cHM6Ly93d3cu/ZGVidWcuc2Nob29s/L3VwbG9hZHMvYXJ0/aWNsZXMvOXh5bTQ1/Y3pxYTJ3Z240bWx6/enAucG5n" alt="Image description" width="880" height="479"></a></p> <h2> Helm Architecture? Inlcude some pic </h2> <p><a href="https://www.debug.school/images/_A-xS5djS1ozhOuzVl2a_H7_h6D9Uf9a2lRKcC5t03w/w:880/mb:500000/ar:1/aHR0cHM6Ly93d3cu/ZGVidWcuc2Nob29s/L3VwbG9hZHMvYXJ0/aWNsZXMvajN2MGlh/cHdvd3I3NGx4NGl1/dXkucG5n" class="article-body-image-wrapper"><img src="https://www.debug.school/images/_A-xS5djS1ozhOuzVl2a_H7_h6D9Uf9a2lRKcC5t03w/w:880/mb:500000/ar:1/aHR0cHM6Ly93d3cu/ZGVidWcuc2Nob29s/L3VwbG9hZHMvYXJ0/aWNsZXMvajN2MGlh/cHdvd3I3NGx4NGl1/dXkucG5n" alt="Image description" width="880" height="548"></a></p> <h2> What is chart and what it contains? </h2> <p>Chart is a directory structure which contains the chart.yml, values.yml , Charts director to have umbrella charts, templates directory, test directory to test charts.</p> <p>Chart.yml is a meta data for the application to be deployed.<br> values.yml contains the configuration information for each k8s resource<br> tempaltes: contains all k8s resources in go template type yml</p>