Configuring Nexus as a Helm repo - Revision history

Scott68.chang at 09:08, 22 October 2018

2018-10-22T09:08:36Z

Scott68.chang at 09:08, 22 October 2018

2018-10-22T09:08:10Z

Scott68.chang at 09:07, 22 October 2018

2018-10-22T09:07:24Z

Scott68.chang at 09:05, 22 October 2018

2018-10-22T09:05:21Z

Scott68.chang at 08:58, 22 October 2018

2018-10-22T08:58:18Z

Scott68.chang at 08:57, 22 October 2018

2018-10-22T08:57:55Z

Scott68.chang at 08:53, 22 October 2018

2018-10-22T08:53:14Z

Scott68.chang at 08:51, 22 October 2018

2018-10-22T08:51:30Z

Scott68.chang at 08:44, 22 October 2018

2018-10-22T08:44:00Z

Scott68.chang at 08:35, 22 October 2018

2018-10-22T08:35:09Z

@@ Line 75: / Line 75: @@
        listen 80;
        location / {
-         return 200 "===============================\n\n &nbsp;&nbsp;This is your helm deploy! \n\n===============================\n";
+         return 200 "===============================\n\n  This is your helm deploy! \n\n===============================\n";
+       }
+     }
@@ Line 107: / Line 107: @@
   This is your helm deploy!
 ====== =================== ======
-</syntaxhighlight> Congratulations! We have created and deployed our first Helm chart.
+</syntaxhighlight> Congratulations! We have created and deployed our first Helm chart. Additionally, you can create a package:
 <syntaxhighlight lang="html4strict">$ helm package my-app</syntaxhighlight> This command creates an archive like my-app-0.1.0.tgz — now you can share your chart with others. For instance, you can upload this file to Helm repository, which we are going to do now.

@@ Line 43: / Line 43: @@
-<syntaxhighlight lang="html4strict">$ helm create my-app</syntaxhighlight>
+<syntaxhighlight lang="html4strict">$ helm create my-app</syntaxhighlight>After that Helm creates a directory with the following layout:<span style="background-color: rgb(245, 245, 245); white-space: pre-wrap;"></span>\
 <syntaxhighlight lang="html4strict">my-app/
@@ Line 57: / Line 55: @@
 │     └── service.yaml
 └── values.yaml
-directories, 7 files</syntaxhighlight>
+directories, 7 files</syntaxhighlight> It has charts directory with chart dependencies, but we don’t need it at the moment. Next comes Chart.yaml containing global variables for the chart such as version and description:
 <syntaxhighlight lang="html4strict">$ cat my-app/Chart.yaml
@@ Line 66: / Line 62: @@
 description: A Helm chart for Kubernetes
 name: my-app
-version: 0.1.0</syntaxhighlight>
+version: 0.1.0</syntaxhighlight> Then comes templates directory – there you put all the *.yaml files for Kubernetes. Helm uses Go template markup language to customize these files. Helm creates three default file types: deployment, service, and ingress. All the files in this directory are ‘skeletons’ which are filled with the variables from values.yaml when you deploy your Helm chart. File _helpers.tpl contains your custom helper functions for variable calculation. By default, helm creates an nginx deployment. Let’s customize it a bit. Add new ConfigMap to the templates directory:
-<syntaxhighlight lang="html4strict">$ cat << HELM &gt; my-app/templates/cm.yaml
+<syntaxhighlight lang="html4strict">$ cat << HELM > my-app/templates/cm.yaml
 apiVersion: v1
 data:
@@ Line 89: / Line 83: @@
 name: nginx-config
 HELM
-</syntaxhighlight>
+</syntaxhighlight> Point our nginx Deployment to that ConfigMap. Add the following lines to the deployment.yaml:
 <syntaxhighlight lang="html4strict">volumes:
@@ Line 97: / Line 89: @@
    configMap:
      name: nginx-config
-</syntaxhighlight>
+</syntaxhighlight> and:
 <syntaxhighlight lang="html4strict">volumeMounts:
@@ Line 105: / Line 95: @@
    mountPath: /etc/nginx/nginx.conf
    subPath: nginx.conf
-</syntaxhighlight>
+</syntaxhighlight> That’s it! Let’s check if we are doing the right thing: helm template my-app This will generate all templates with variables and show the output. Now that we know everything is OK, we can deploy the chart:
 <syntaxhighlight lang="html4strict">$ kubectl get svc
@@ Line 121: / Line 107: @@
   This is your helm deploy!
 ====== =================== ======
-</syntaxhighlight>
+</syntaxhighlight> Congratulations! We have created and deployed our first Helm chart.
 Additionally, you can create a package:
-<syntaxhighlight lang="html4strict">$ helm package my-app</syntaxhighlight>
+<syntaxhighlight lang="html4strict">$ helm package my-app</syntaxhighlight> This command creates an archive like my-app-0.1.0.tgz — now you can share your chart with others. For instance, you can upload this file to Helm repository, which we are going to do now.
 == '''Upload HELM Package''' ==

@@ Line 142: / Line 142: @@
 == '''Check on private helm''' ==
-'''Check the repo list'''
+Check the repo list
-'''Search on private helm'''
+[[File:Helm repo list.png|800x134px]]
 = '''Reference''' =
 *'''[https://medium.com/containerum/how-to-make-and-share-your-own-helm-package-50ae40f6c221 https://medium.com/containerum/how-to-make-and-share-your-own-helm-package-50ae40f6c221]'''

← Older revision		Revision as of 09:05, 22 October 2018
Line 139:		Line 139:

	[[File:HelmPackage.png\|388x197px\|HelmPackage.png]]		[[File:HelmPackage.png\|388x197px\|HelmPackage.png]]
		+
		+	== '''Check on private helm''' ==
		+
		+	'''Check the repo list'''
		+
		+	'''Search on private helm'''
		+
		+	= '''Reference''' =
		+
		+	*'''[https://medium.com/containerum/how-to-make-and-share-your-own-helm-package-50ae40f6c221 https://medium.com/containerum/how-to-make-and-share-your-own-helm-package-50ae40f6c221]'''

@@ Line 134: / Line 134: @@
 Upload the tgz file at Upload/helm-private page.
-[[File:Upload Helm package.png|640x286px]]
+[[File:Upload Helm package.png|640x286px|Upload Helm package.png]]
-'''The upload package is shown below.'''
+The upload package is shown below.
-[[File:HelmPackage.png|388x197px]]
+[[File:HelmPackage.png|388x197px|HelmPackage.png]]

← Older revision		Revision as of 08:57, 22 October 2018
Line 132:		Line 132:
	== '''Upload HELM Package''' ==		== '''Upload HELM Package''' ==

−	~~'''~~Upload the tgz file at Upload/helm-private page.'''	+	Upload the tgz file at Upload/helm-private page.
		+
		+	[[File:Upload Helm package.png\|640x286px]]
		+
		+	'''The upload package is shown below.'''
		+
		+	[[File:HelmPackage.png\|388x197px]]

← Older revision		Revision as of 08:44, 22 October 2018
Line 32:		Line 32:


−	<syntaxhighlight lang="~~cmd~~">$ helm repo add nexusrepo http://localhost:8081/repository/helm-proxy/</syntaxhighlight>Replace nexusrepo with what you'd like the repo to be called, and the url with what the full url to your proxy repository is. From that point you can install helm charts using a command similar to the following:	+	<syntaxhighlight lang="html4strict">$ helm repo add nexusrepo http://localhost:8081/repository/helm-proxy/</syntaxhighlight>Replace nexusrepo with what you'd like the repo to be called, and the url with what the full url to your proxy repository is. From that point you can install helm charts using a command similar to the following:
		+
		+	<syntaxhighlight lang="html4strict">$ helm install nexusrepo/mongodb</syntaxhighlight> If everything went smoothly, the command above will install the latest version of mongodb.

−	~~<syntaxhighlight lang="cmd">$ helm install nexusrepo/mongodb</syntaxhighlight> If everything went smoothly, the command above will install the latest version of mongodb.~~
	== '''Create a package''' ==		== '''Create a package''' ==

@@ Line 40: / Line 40: @@
 To start working on a chart, Helm uses a simple command create:
-<syntaxhighlight lang="html4strict">$ helm create my-app</syntaxhighlight>After that Helm creates a directory with the following layout:<syntaxhighlight lang="html4strict">
+<syntaxhighlight lang="html4strict">$ helm create my-app</syntaxhighlight>After that Helm creates a directory with the following layout:<span style="background-color: rgb(245, 245, 245); white-space: pre-wrap;"></span><syntaxhighlight lang="html4strict">my-app/
 ├── charts
 ├── Chart.yaml
@@ Line 58: / Line 57: @@
 description: A Helm chart for Kubernetes
 name: my-app
-version: 0.1.0</syntaxhighlight> Then comes templates directory – there you put all the *.yaml files for Kubernetes. Helm uses Go template markup language to customize these files. Helm creates three default file types: deployment, service and ingress. All the files in this directory are ‘skeletons’ which are filled with the variables from values.yaml when you deploy your Helm chart. File _helpers.tpl contains your custom helper functions for variable calculation. By default helm creates an nginx deployment. Let’s customize it a bit. Add new ConfigMap to the templates directory:<syntaxhighlight lang="html4strict">$ cat &lt;< HELM &gt; my-app/templates/cm.yaml
+version: 0.1.0</syntaxhighlight> Then comes templates directory – there you put all the *.yaml files for Kubernetes. Helm uses Go template markup language to customize these files. Helm creates three default file types: deployment, service, and ingress. All the files in this directory are ‘skeletons’ which are filled with the variables from values.yaml when you deploy your Helm chart. File _helpers.tpl contains your custom helper functions for variable calculation. By default, helm creates an nginx deployment. Let’s customize it a bit. Add new ConfigMap to the templates directory:<syntaxhighlight lang="html4strict">$ cat << HELM &gt; my-app/templates/cm.yaml
 apiVersion: v1
 data:
 nginx.conf: |
    events {
-     worker_connections &nbsp;1024;
+     worker_connections 1024;
+   }
    http {
@@ Line 85: / Line 84: @@
    mountPath: /etc/nginx/nginx.conf
    subPath: nginx.conf
-</syntaxhighlight> That’s it! Let’s check if we are doing the right thing:
+</syntaxhighlight> That’s it! Let’s check if we are doing the right thing: helm template my-app
 This will generate all templates with variables and show the output. Now that we know everything is OK, we can deploy the chart: