I have a deployment script that is fetching rabbitmq from kubernetes-charts reports
- name: rabbitmq
version: 0.6.17
repository: https://kubernetes-charts.storage.googleapis.com/
It seems like this is not working from yesterday. Does someone which repository url I can use instead?
The official chart repository is deprecated. For the specific Helm chart, you should check https://artifacthub.io/.
In the case of rabbitmq, you can find it here. And here are the Helm commands.
$ helm repo add bitnami https://charts.bitnami.com/bitnami
$ helm install my-release bitnami/rabbitmq
Related
I'm attempting to use a Bitnami Helm chart for Postgresql to spin up a custom Docker image that I create (I take the Bitnami Postgres Docker image and pre-populate it with my data, and then build/tag it and push it to my own Docker registry).
When I attempt to start up the chart with my own image coordinates, the service spins up, but no pods are present. I'm trying to figure out why.
I've tried running helm install with the --debug option and I notice that if I run my configuration below, only 4 resources get created (client.go:128: [debug] creating 4 resource(s)), vs 5 resources if I try to spin up the default Docker image specified in the Postgres Helm chart. Presumably the missing resource is my pod. But I'm not sure why or how to fix this.
My Chart.yaml:
apiVersion: v2
name: test-db
description: A Helm chart for Kubernetes
type: application
version: "1.0-SNAPSHOT"
appVersion: "1.0-SNAPSHOT"
dependencies:
- name: postgresql
version: 11.9.13
repository: https://charts.bitnami.com/bitnami
condition: postgresql.enabled
My values.yaml:
postgresql:
enabled: true
image:
registry: myregistry.com
repository: test-db
tag: "1.0-SNAPSHOT"
pullPolicy: always
pullSecrets:
- my-reg-secret
service:
type: ClusterIP
nameOverride: test-db
I'm starting this all up by running
helm dep up
helm install mydb .
When I start up a Helm chart (helm install mychart .), is there a way to see what Helm/Kubectl is doing, beyond just passing the --debug flag? I'm trying to figure out why it's not spinning up the pod.
The issue was on this line in my values.yaml:
pullPolicy: always
The pullPolicy is case sensitive. Changing the value to Always (note capital A) fixed the issue.
I'll add that this error wasn't immediately obvious, and there was no indication in the output from running the Helm command that this was the issue.
I was able to discover the problem by looking at how the statefulset got deployed (I use k9s to navigate Kubernetes resources): it showed 0/0 for the number of pods that were deployed. Describing this statefulset, I was able to see the error in capitalization in the startup logs.
I'm writing an Ansible task to deploy GitLab in my k3s environment.
According to the doc, I need to execute this to install GitLab using Helm:
$ helm install gitlab gitlab/gitlab \
--set global.hosts.domain=DOMAIN \
--set certmanager-issuer.email=me#example.com
But the community.kubernetes.helm doesn't handle --set parameters and only call helm with the --values parameter.
So my Ansible task looks like this:
- name: Deploy GitLab
community.kubernetes.helm:
update_repo_cache: yes
release_name: gitlab
chart_ref: gitlab/gitlab
release_namespace: git
release_values:
global.hosts.domain: example.com
certmanager-issuer.email: info#example.com
But the helm chart still return the error You must provide an email to associate with your TLS certificates. Please set certmanager-issuer.email.
I've tried manually in a terminal, and it seems that the GitLab helm chart requires --set parameters and fail with --values. But community.kubernetes.helm doesn't.
What can I do?
Is there a bug on GitLab helm chart side?
it seems that the GitLab helm chart requires --set parameters and fail with --values
That is an erroneous assumption; what you are running into is that --set splits on . because otherwise providing fully-formed YAML on the command line would be painful
The correct values are using sub-objects where the . occurs:
- name: Deploy GitLab
community.kubernetes.helm:
update_repo_cache: yes
release_name: gitlab
chart_ref: gitlab/gitlab
release_namespace: git
release_values:
global:
hosts:
# https://gitlab.com/gitlab-org/charts/gitlab/-/blob/v4.4.5/values.yaml#L47
domain: example.com
# https://gitlab.com/gitlab-org/charts/gitlab/-/blob/v4.4.5/values.yaml#L592-595
certmanager-issuer:
email: info#example.com
While installing a helm chart a condition for the dependency works well as the following Chart.yaml file. But it doesn't allow to apply the condition based on the existing Kubernetes resource.
# Chart.yaml
apiVersion: v1
name: my-chart
version: 0.3.1
appVersion: 0.4.5
description: A helm chart with dependency
dependencies:
- name: metrics-server
version: 2.5.0
repository: https://artifacts.myserver.com/v1/helm
condition: metrics-server.enabled
I did a local install of the chart (my-chart) in a namespace(default), then I try to install the same chart in another namespace(pb) I get the following error which says the resource already exists. This resource, "system:metrics-server-aggregated-reader", has been installed cluster wide as previous dependency (metrics-server). Following is the step to reproduce.
user#hostname$helm install my-chart -n default --set metrics-server.enabled=true ./my-chart
NAME: my-chart
LAST DEPLOYED: Wed Nov 25 16:22:52 2020
NAMESPACE: default
STATUS: deployed
REVISION: 1
NOTES:
My Cluster
user#hostname$helm install my-chart -n pb --set metrics-server.enabled=true ./my-chart
Error: rendered manifests contain a resource that already exists. Unable to continue with install: ClusterRole "system:metrics-server-aggregated-reader" in namespace "" exists and cannot be imported into the current release: invalid ownership metadata; annotation validation error: key "meta.helm.sh/release-namespace" must equal "pb": current value is "default"
There is a way to modify the template inside the metrics-server chart to conditionally generate the manifest files as described in Helm Conditional Templates. In order to do this I have to modify and maintain the metrics-server chart in internal artifact which will restrict me using the most recent charts.
I am looking for an approach to query the existing Kubernetes resource, "system:metrics-server-aggregated-reader", and only install the dependency chart if such resource do not exists.
The syntax for adding a dependency to a helm 3 chart looks like this (inside of chart.yaml).
How can you specify a release name if you need multiple instances of a dependency?
apiVersion: v2
name: shared
description: Ingress Controller and Certificate Manager
type: application
version: 0.1.1
appVersion: 0.1.0
dependencies:
- name: cert-manager
version: ~0.13
repository: https://charts.jetstack.io
In the CLI it's just helm upgrade -i RELEASE_NAME CHART_NAME -n NAMESPACE
But inside of Chart.yaml the option to specify a release seems to be missing.
The next question I have is if there's a weird way to do it, how would you write the values for each instance in the values.yaml file?
After 5 more minutes of searching I found that there's an alias field that can be added, like so:
dependencies:
- name: cert-manager
alias: first-one
version: ~0.13
repository: https://charts.jetstack.io
- name: cert-manager
alias: second-one
version: ~0.13
repository: https://charts.jetstack.io
And in the values.yaml file
first-one:
# values go here
second-one:
# values go here
Reference https://helm.sh/docs/topics/charts/#the-chartyaml-file
Using cert-manager is just an example, I can't think of a use-case that would need two instances of that particular chart. I'm hoping to use it for brigade projects
When you install a chart with a child chart that doesn't specify a namespace, Helm will use the one specified on command line via --namespace. Is it possible to override this flag for a specific child chart?
For example if I have chart A which depends on chart B and I specify --namespace foo, I want to be able to customize the resources of chart B to be installed into some other namespace bar instead of foo.
Update 2:
Helm 3 added support for multi namespaces https://github.com/helm/helm/issues/2060
Update 1:
If a resource template specifies a metadata.namespace, then it will be installed in that namespace. For example, if I have a pod with metadata.namespace: x and I run helm install mychart --namespace y, that pod will be installed in x. I guess you could use regular helm templates with the namespace to parameterize it.
Original answer:
We do not plan on fully supporting multi-namespaced releases until Helm 3.0
https://github.com/kubernetes/helm/issues/2060#issuecomment-306847365
As a workaround, you install for each namespace individually using --skip-dependencies or with dependency conditions
If you already have different charts then you can use helmfile to achieve this.
Step 1:
create the following folder.
my-awesome-infrastructure/
helm
helmfile
helmfile.yaml
Where helm and helmfile are the binary executables.
Step 2: install the helm diff plugin which is needed used helmfile.
helm plugin install https://github.com/databus23/helm-diff
Step 3: declare your charts in the helmfile.yaml.
helmBinary: ./helm
repositories:
- name: ingress-nginx
url: https://kubernetes.github.io/ingress-nginx
- name: bitnami
url: https://charts.bitnami.com/bitnami
releases:
- name: nginx-ingress
namespace: nginx-ingress
createNamespace: true
chart: ingress-nginx/ingress-nginx
version: ~4.1.0
- name: jupyterhub
namespace: jupyterhub
createNamespace: true
chart: bitnami/jupyterhub
version: ~1.1.12
- name: metrics-server
namespace: metrics-server
createNamespace: true
chart: bitnami/metrics-server
version: ~5.11.9
Step 4: run helmfile to deploy all charts.
./helmfile apply
In the above example, you are deploying three separate charts to three separate namespaces.
Under the covers, helmfile will run helm install separately and create separate releases.