#helmfile - August 2019 | Slack Archive

71 messages

Questions and discussion around helmfile https://github.com/roboll/helmfile and https://github.com/cloudposse/helmfiles
Archive: https://archive.sweetops.com/helmfile/

Jul 2019

August 2019

Sep 2019

agover 6 years ago

are you only able to pull .Environment.Values into a values.yaml.gotmpl?

agover 6 years ago

like something like this doesnt work

agover 6 years ago

      "<http://service.beta.kubernetes.io/aws-load-balancer-ssl-cert|service.beta.kubernetes.io/aws-load-balancer-ssl-cert>": {{  .Values.cert.arn }}

agover 6 years ago

if my values: is setup like

agover 6 years ago

    values:
    - ../../values/kube2iam/values.yaml.gotmpl
    - ../../values/kube2iam/{{ .Environment.Name }}.values.yaml

agover 6 years ago

values.yaml.gotmpl contains the .Values.cert.arn and environment.values.yaml has an entry like

agover 6 years ago(edited)

cert.arn: "fdjklfsj"

agover 6 years ago

there is no way to reference that value from another values template

agover 6 years ago

or would i need to do some {{ readFile }} magic

mumoshuover 6 years ago

@ag Hey! Yeah, you need readFile magic, or leverage sub-helmfiles like https://github.com/roboll/helmfile/issues/756#issuecomment-514013382

Helmfile values and chart(release) values are completely different things

mumoshuover 6 years ago

@ag We're discussing about setting values from a template rendered in a custom context(=.Values)

https://github.com/roboll/helmfile/issues/745#issuecomment-510737741


releases:
- name: myapp`
  chart: my-chart
  valuesFrom:
  - templateFile:
      path: values/values-file.yaml.gotmpl
      valuesFrom:
      # Instead of implicitly passing helmfile's Values to the values-file.yaml.gotmpl
      # Overrides it with `releaseName: myapp`
      - inlineTemplate:
          releaseName: `{{.Release.Name}}` #<- you'll need {{` `}} to defer rendering until the evaluation time of inlineTemplate. otherwise this fails due to that .Release.Name isn't available at loading-time of your helmfile.yaml :)

Yevhenii Demchenkoover 6 years ago(edited)

Hi guys,
I'm having troubles with installing chart via helmfile.
helfile


repositories:
- name: stable
  url: <https://kubernetes-charts.storage.googleapis.com>
- name: helm
  url: <utl>
  username: <username>
  password: <password>

helmDefaults:
  tillerNamespace: kube-system
  verify: true
  wait: true
  timeout: 600
  recreatePods: true
  force: true
  tls: false

# The desired states of Helm releases.
#
# Helmfile runs various helm commands to converge the current state in the live cluster to the desired state defined here.
releases:
  - name: consul
    namespace: default
    chart: helm/consul
    version: 0.8.1
    values:
    - charts/chart-consul/values.yaml

I'm getting an error Error: failed to download "helm/consul" (hint: running helm repo update may help)
If I try to install via helm, everything works fine.
When tracing, I found out that helm tries to download tgz.pov chart file, while in index.yaml there is only tgz one.
Any ideas?

mumoshuover 6 years ago

Interesting. How a successful helm command look like?
Can you compare it with the helm command being run by Helmfile if you run helmfile --log-level=debug?

Yevhenii Demchenkoover 6 years ago

successful via helm - https://gist.github.com/djackyn/725ac0638c33c89a3cb903d03707f43c
failure via helmfile - https://gist.github.com/djackyn/725ac0638c33c89a3cb903d03707f43c

Yevhenii Demchenkoover 6 years ago

will try to run same command as helmfile now

Yevhenii Demchenkoover 6 years ago

Okay, have the same problems. Seems like a bug in the helm, will check. Thanks for the direction

Nelson Jeppesenover 6 years ago(edited)

If I do the following:
1. deploy a chart (deployment) with helmfile
2. edit that deployment with kubectl

should a helmfile diff show a change?

Nelson Jeppesenover 6 years ago(edited)

Because when I run helmfile diff with a manual edited deployment, it shows no changes. This is with helmfile 0.80.2 and tested with helm 2.13.1, 2.14.1 and 2.14.3

Erik Osterman (Cloud Posse)over 6 years ago

yes, it should, however helmfile just calls out to helm-diff https://github.com/databus23/helm-diff

mumoshuover 6 years ago

as far as i understand, helm diff doesn't show diff for actual k8s resources

mumoshuover 6 years ago

helm persists the desired state of k8s manifests per each helm release in a release configmap/secret in tiller namespace

mumoshuover 6 years ago

helm-diff shows diffs from that, not from the current state of your cluster

Erik Osterman (Cloud Posse)over 6 years ago

aha, wow, didn't know that.

mumoshuover 6 years ago

so the downside of helm-diff is that you cant use it to detect "skews" due to manual changes

mumoshuover 6 years ago

fyi: https://github.com/databus23/helm-diff/blob/28e683213d7c98a16a098dd21bc51f60a25f714b/cmd/release.go#L94-L99

mumoshuover 6 years ago

i wonder if kubectl diff is useful in that case though 🤔

maybe it can be used like this:


helm get $YOUR_RELEASE_NAME --template {{.Release.Manifest}} | kubectl diff -f -

Jeremy G (Cloud Posse)over 6 years ago

Yes, I recently encountered this behavior. helm diff diffs the new desired state against the old desired state. It is blind to manual changes in the state. I didn't even know kubectl diff existed.

Nelson Jeppesenover 6 years ago

Thank ya'll, that's very helpful. I was not aware of kubectl diff either.

Nelson Jeppesenover 6 years ago

Guess I need to keep some hands out of the kubectl pot in the future 🙂

Nelson Jeppesenover 6 years ago

darn, can't use kubectl diff with k8s 1.11 it seems

Shikhar Goelover 6 years ago

Hi....Is ordering possible in helmfile for single helmfile.yaml....say i have 10 helm charts in a single helmfile and i want to run run them in the order they are defined is it possible?

Shikhar Goelover 6 years ago

Without labels it is working with --concurrency=1 but with labels it is not

agover 6 years ago

use helmfiles:

agover 6 years ago

is how im doing it

Shikhar Goelover 6 years ago

what you are specifying in helmfile

Shikhar Goelover 6 years ago

can you give example

agover 6 years ago

helmfiles:
- path: releases/external-dns/helmfile.yaml.gotmpl
  values:
  - versions.yaml
- path: releases/prometheus-operator/helmfile.yaml.gotmpl
  values:
  - versions.yaml
- path: releases/prometheus-pushgateway/helmfile.yaml.gotmpl
  values:
  - versions.yaml

agover 6 years ago

will deploy them in that order

Shikhar Goelover 6 years ago

but i want to use only one helmfile i dont want to use multiple helmfiles....ok if this i do is it possible to have helmfile specific to envvironment

Shikhar Goelover 6 years ago

like i have three environments i want each corresponding helmfile for them

agover 6 years ago

not sure with a single helmfile

Shikhar Goelover 6 years ago

i want that the helmfile with --environment set should work

Shikhar Goelover 6 years ago

can i have helmfile per environment

Shikhar Goelover 6 years ago

Thanks....Hi is it possible to read the values in gotmpl file from the configmap in k8s?

Travis Grothover 6 years ago

@mumoshu so i have https://github.com/roboll/helmfile/pull/790 open but looking at the environmentSecrets, i'm thinking a package scoped cache might be better so that exec contexts don't need to be threaded everywhere

Travis Grothover 6 years ago

LMK thoughts on that approach. i think its an easy evolution of that patch.

Nelson Jeppesenover 6 years ago

When running helmfile deps, how to scope it to a single release?

Nelson Jeppesenover 6 years ago(edited)

I tried helmfile --selector name=my-app-1 deps, but that removes everything except my-app-1 from helmfile.lock

Erik Forsbergover 6 years ago

I have a chart, namely prometheus-msteams that reads in a file via Files.Get. I'd like to override the contents of that file, i.e what's in card.tmp. Is there some way of doing so when installing the chart via helmfile?

I can of course modify the chart so that it has the option to specify what configmap to use, but if I don't have to because helmfile already can do this for me, I will be eternally happy 🙂

https://github.com/bzon/prometheus-msteams/tree/master/chart/prometheus-msteams

Travis Grothover 6 years ago

@mumoshu do you know when you're anticipating a new helmfile release?

Shiva Gopalover 6 years ago

#helmfile I am thinking of the following structure


*modules*   readme.md sites

./modules:
postgresql prometheus

./modules/postgresql:
postgresql.yaml

./modules/prometheus:
prometheus.yaml

./sites:
minikube

./sites/minikube/local:
helmfile.yaml          postgresql_values.yaml prometheus_values.yaml
./sites/infra/dev:
helmfile.yaml
./sites/infra/staging:

Where the sites folder would have the components that needs to be installed in an environment, and the modules holding the common modules. I saw the helmfiles.d/ and values/ separation, here it would give us better view on what is going on per site. What are the problems with the above structure? Since nothing much has been actually done, it would be very easy to change at this point. Thanks 🙏

Erik Osterman (Cloud Posse)over 6 years ago

@Shiva Gopal I don't see any use of "environments"

Erik Osterman (Cloud Posse)over 6 years ago

just want to make sure that's on your radar

Shiva Gopalover 6 years ago

@Erik Osterman (Cloud Posse) - the structure is ./sites/customer/{env,namespace} - At least that's the idea

Shiva Gopalover 6 years ago

#helmfile - I want to run https://github.com/helm/charts/tree/master/stable/grafana repeatedly, with the adminPassword set in values.yaml file

I have tried different combinations, the secret is getting generated each time. What am I doing wrong? Thanks @mumoshu

Andrew Nazarovover 6 years ago

It’s too bad we cannot see the full history here. I wanted to recall something by checking out old messages, but got hit by this limitation.

nutellinoitover 6 years ago

@Andrew Nazarov you can use https://archive.sweetops.com/helmfile/

Erik Osterman (Cloud Posse)over 6 years ago

https://medium.com/faun/why-i-no-longer-use-terraform-for-templating-kubernetes-9aef37741447

Erik Osterman (Cloud Posse)over 6 years ago

by our very own @stobiewankenobi

sung kangover 6 years ago

Hey ya’ll, I feel like I’m misunderstanding something about environments feature in helmfile and was hoping someone could point me in the right direction. Trying to do this but my environment values aren’t getting passed down to my sub helmfiles


environments:
   beta:
    values:
      - externaldns:
          installed: false
        namespaces:
          installed: false

helmfiles:
  - path: releases/external-dns
    values:
     - installed: {{ Environment.Values.externaldns.installed }}
  - path: releases/namespaces
    values:
     - installed: {{ Environments.Values.namespaces.installed }}

sung kangover 6 years ago

Am I missing something here entirely?

sung kangover 6 years ago

I know environments aren’t shared down to sub-helmfiles but I’d thought I could expose them through the state this way

devoperandiover 6 years ago

Hello, anyone around to answer a question?

Shiva Gopalover 6 years ago(edited)

@Erik Osterman (Cloud Posse) / @mumoshu / others with terraform experience. Has anyone studied the pros/cons of using terraform helm provider vs helmfile? I am obviously biased towards helmfile (don't have much experience with the tf helm provider though) and would like to present any known items of one vs the other. Thanks

Erik Osterman (Cloud Posse)over 6 years ago

(I jumping on a call but will get back to you today)

Shiva Gopalover 6 years ago

Thanks @Erik Osterman (Cloud Posse)

Shiva Gopalover 6 years ago

@devoperandi - welcome , loved your blog and still using git2consul 🙂

devoperandiover 6 years ago

@Shiva Gopal Thanks man. I have utterly failed to blog over the last year. Need to get back to it.

Daniel Johanssonover 6 years ago

Hi, I have a set of helmfiles in helmfiles.d and a values.gotmpl created by other people. I get an error complaining about .Values.clusterRegion not being set, even though it looks to me that it should be set. Is there a way to render the .gotmpl-file to see that that is ok and/or see what helmfile thinks should be in the .Values variable ?

Daniel Johanssonover 6 years ago

I've tried with: helmfile --log-level debug template
and also adding a dummy parameter with {{ .Values | toYaml }}
But nothing showed presumed contents of the .gotmpl

Robertover 6 years ago

@Robert has joined the channel

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