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[[File:Helm.svg|thumb|150px|The package manager for Kubernetes|link=https://helm.sh/]] [https://helm.sh/ Helm] ([https://github.com/helm/helm github]) describes itself as "the package manager for Kubernetes". Alternative to [[Kustomize]], Helm is a tool for managing Charts. Charts are packages of pre-configured Kubernetes resources. Use Helm to: *Find and use popular software packaged as Helm Charts to run in Kubernetes *Share your own applications as Helm Charts *Create reproducible builds of your Kubernetes applications *Intelligently manage your Kubernetes manifest files *Manage releases of Helm packages == Examples == Assuming you already have Helm installed and you have a running Kubernetes cluster (start out with [[minikube]]), you could issue the following to "install" the MediaWiki application (chart) offered by Bitnami (as contained in the docker.io registry). The name of the application (called a "release") would be "my-release".<br /> <code>helm install my-release oci://registry-1.docker.io/bitnamicharts/mediawiki</code> This would produce output like the following: <pre> Pulled: registry-1.docker.io/bitnamicharts/mediawiki:21.0.3 Digest: sha256:43a905d16c40c05f290b6e19db684dfe2d75677f3a6c7ce1c0b3ac81897beb9c NAME: my-release LAST DEPLOYED: Thu Aug 1 18:32:54 2024 NAMESPACE: default STATUS: deployed REVISION: 1 TEST SUITE: None NOTES: CHART NAME: mediawiki CHART VERSION: 21.0.3 APP VERSION: 1.42.1 ** Please be patient while the chart is being deployed **############################################################################### ### ERROR: You did not provide an external host in your 'helm install' call ### ############################################################################### </pre> It goes on <pre> This deployment will be incomplete until you configure Mediawiki with a resolvable host. To configure Mediawiki with the URL of your service: 1. Get the Mediawiki URL by running: NOTE: It may take a few minutes for the LoadBalancer IP to be available. Watch the status with: 'kubectl get svc --namespace default -w my-release-mediawiki' export APP_HOST=$(kubectl get svc --namespace default my-release-mediawiki --template "{{ range (index .status.loadBalancer.ingress 0) }}{{ . }}{{ end }}") export APP_PASSWORD=$(kubectl get secret --namespace default my-release-mediawiki -o jsonpath="{.data.mediawiki-password}" | base64 -d) export MARIADB_ROOT_PASSWORD=$(kubectl get secret --namespace default my-release-mariadb -o jsonpath="{.data.mariadb-root-password}" | base64 -d) export MARIADB_PASSWORD=$(kubectl get secret --namespace default my-release-mariadb -o jsonpath="{.data.mariadb-password}" | base64 -d) 2. Complete your Mediawiki deployment by running: helm upgrade --namespace default my-release oci://registry-1.docker.io/bitnamicharts/mediawiki \ --set mediawikiHost=$APP_HOST,mediawikiPassword=$APP_PASSWORD,mariadb.auth.rootPassword=$MARIADB_ROOT_PASSWORD,mariadb.auth.password=$MARIADB_PASSWORD 2. Get your MediaWiki login credentials by running: echo Username: user echo Password: $(kubectl get secret --namespace default my-release-mediawiki -o jsonpath="{.data.mediawiki-password}" | base64 -d) WARNING: There are "resources" sections in the chart not set. Using "resourcesPreset" is not recommended for production. For production installations, please set the following values according to your workload needs: - resources +info https://kubernetes.io/docs/concepts/configuration/manage-resources-containers/ </pre> If you have Kubernetes Dashboard installed you would see something like this [[File:Kubernetes dashboard.png|800px|right|thumb]] [[Category:Kubernetes]] [[Category:Virtualization]] [[Category:Packages]] [[Category:Tools]]
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