Helm: Difference between revisions

Line 8:

*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]]

@@ Line 8: / Line 8: @@
 *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:
+. 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)
+. 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
+. 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]]