MicroK8s : Enable Helm32022/09/02 |
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Enable Helm3 add-on to deploy applications from Helm Charts.
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| [1] | Enable built-in Helm3 add-on on primary Node. |
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root@dlp:~# microk8s enable helm3
Infer repository core for addon helm3
Enabling Helm 3
Fetching helm version v3.8.0.
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 12.9M 100 12.9M 0 0 4497k 0 0:00:02 0:00:02 --:--:-- 4497k
Helm 3 is enabled
root@dlp:~# microk8s helm3 version
WARNING: Kubernetes configuration file is group-readable. This is insecure. Location: /var/snap/microk8s/3597/credentials/client.config
version.BuildInfo{Version:"v3.8.0", GitCommit:"d14138609b01886f544b2025f5000351c9eb092e", GitTreeState:"clean", GoVersion:"go1.17.5"}
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| [2] | Basic Usage of Helm3. |
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# search charts by words in Helm Hub root@dlp:~# microk8s helm3 search hub wordpress URL CHART VERSION APP VERSION DESCRIPTION https://artifacthub.io/packages/helm/kube-wordp... 0.1.0 1.1 this is my wordpress package https://artifacthub.io/packages/helm/bitnami/wo... 15.1.5 6.0.2 WordPress is the world's most popular blogging ... https://artifacthub.io/packages/helm/bitnami-ak... 15.0.19 6.0.1 WordPress is the world's most popular blogging ... ..... ..... # add repository root@dlp:~# microk8s helm3 repo add bitnami https://charts.bitnami.com/bitnami $ helm install my-release bitnami/<chart> # Helm 3 # display added repositories root@dlp:~# microk8s helm3 repo list NAME URL bitnami https://charts.bitnami.com/bitnami # search charts by words in repository root@dlp:~# microk8s helm3 search repo bitnami NAME CHART VERSION APP VERSION DESCRIPTION bitnami/airflow 13.1.3 2.3.4 Apache Airflow is a tool to express and execute... bitnami/apache 9.2.2 2.4.54 Apache HTTP Server is an open-source HTTP serve... bitnami/argo-cd 4.1.2 2.4.8 Argo CD is a continuous delivery tool for Kuber... bitnami/argo-workflows 2.4.2 3.3.9 Argo Workflows is meant to orchestrate Kubernet... bitnami/aspnet-core 3.5.2 6.0.8 ASP.NET Core is an open-source framework for we... ..... ..... # display description of a chart # helm show [all|chart|readme|values] [chart name] root@dlp:~# microk8s helm3 show chart bitnami/wordpress annotations: category: CMS apiVersion: v2 appVersion: 6.0.2 dependencies: - condition: memcached.enabled name: memcached repository: https://charts.bitnami.com/bitnami version: 6.x.x - condition: mariadb.enabled name: mariadb repository: https://charts.bitnami.com/bitnami version: 11.x.x - name: common repository: https://charts.bitnami.com/bitnami tags: - bitnami-common version: 2.x.x description: WordPress is the world's most popular blogging and content management platform. Powerful yet simple, everyone from students to global corporations use it to build beautiful, functional websites. home: https://github.com/bitnami/charts/tree/master/bitnami/wordpress icon: https://bitnami.com/assets/stacks/wordpress/img/wordpress-stack-220x234.png keywords: - application - blog - cms - http - php - web - wordpress maintainers: - name: Bitnami url: https://github.com/bitnami/charts name: wordpress sources: - https://github.com/bitnami/containers/tree/main/bitnami/wordpress - https://wordpress.org/ version: 15.1.5 # deploy application by specified chart # helm install [any name] [chart name] root@dlp:~# microk8s helm3 install wordpress bitnami/wordpress
NAME: wordpress
LAST DEPLOYED: Fri Sep 2 07:36:13 2022
NAMESPACE: default
STATUS: deployed
REVISION: 1
TEST SUITE: None
NOTES:
CHART NAME: wordpress
CHART VERSION: 15.1.5
APP VERSION: 6.0.2
** Please be patient while the chart is being deployed **
Your WordPress site can be accessed through the following DNS name from within your cluster:
wordpress.default.svc.cluster.local (port 80)
To access your WordPress site from outside the cluster follow the steps below:
1. Get the WordPress URL by running these commands:
NOTE: It may take a few minutes for the LoadBalancer IP to be available.
Watch the status with: 'kubectl get svc --namespace default -w wordpress'
export SERVICE_IP=$(kubectl get svc --namespace default wordpress --include "{{ range (index .status.loadBalancer.ingress 0) }}{{ . }}{{ end }}")
echo "WordPress URL: http://$SERVICE_IP/"
echo "WordPress Admin URL: http://$SERVICE_IP/admin"
2. Open a browser and access WordPress using the obtained URL.
3. Login with the following credentials below to see your blog:
echo Username: user
echo Password: $(kubectl get secret --namespace default wordpress -o jsonpath="{.data.wordpress-password}" | base64 -d)
# display deployed applications root@dlp:~# microk8s helm3 list NAME NAMESPACE REVISION UPDATED STATUS CHART APP VERSION wordpress default 1 2022-09-02 07:36:13.018733392 +0000 UTC deployed wordpress-15.1.5 6.0.2root@dlp:~# microk8s kubectl get pods NAME READY STATUS RESTARTS AGE wordpress-mariadb-0 0/1 Running 0 35s wordpress-67885bf5cb-x59f9 0/1 Running 0 35s # display status of a deployed application root@dlp:~# microk8s helm3 status wordpress NAME: wordpress LAST DEPLOYED: Fri Sep 2 07:36:13 2022 NAMESPACE: default STATUS: deployed REVISION: 1 TEST SUITE: None NOTES: CHART NAME: wordpress CHART VERSION: 15.1.5 APP VERSION: 6.0.2 ..... ..... # uninstall a deployed application root@dlp:~# microk8s helm3 uninstall wordpress release "wordpress" uninstalled |
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