#helmfile (2022-03)
Questions and discussion around helmfile https://github.com/roboll/helmfile and https://github.com/cloudposse/helmfiles
Archive: https://archive.sweetops.com/helmfile/
2022-03-09
I am really wrestling with helmfile in application. I think i understand what I can do but the values are killing me.
Using Redis chart as an example:
I have a hemlfile.yaml
bases:
- ../common.yml
- environments.yml
---
repositories:
- name: bitnami
url: <https://charts.bitnami.com/bitnami>
releases:
- name: redis
chart: bitnami/redis
force: true
installed: {{ env "REDIS_INSTALLED" | default .Values.installed }}
version: 16.4.5
labels:
managed: true
values:
- values.gotmpl
My environments.yml looks like (truncated):
environments:
default:
values:
- ../globals.gotmpl
- defaults.yml
develop:
values:
- ../globals.gotmpl
- defaults.yml
And my defaults.yml looks like (i have a production one as well):
installed: true
architecture: standalone
master:
persistence:
enabled: false
replica:
persistence:
enabled: false
replicaCount: 0
My issues are:
- It seems I have to “replicate” the properties inside the
values.gotmplwhen I would of expected them to be inherited fromglobals.yml - Just within the Redis chart itself I seem to have to do # 1 as well - even if i get rid of the
values.gotmplI would of expected it to use one of the environment files Myvalues.gotmpllooks like this: ``` architecture: {{ .Values.architecture }}
master: persistence: enabled: {{ .Values.master.persistence.enabled }}
replica: persistence: enabled: {{ .Values.replica.persistence.enabled }} replicaCount: {{ .Values.replica.replicaCount }} ``` And all it is doing is repeating the values from the environment files.
The reason I am asking here is because it seems like you are heavy users of Helmfile and honestly the only real resource I seem to be able to locate.
2022-03-14
Does anyone know how to ensure a release is not installed when a flag is set? condition: mychart.disabled ?
use installed: instead of condition:
Thanks. Not sure how to do that based on a condition though. Combine them?
no, just try installed: mychart.installed
AFAIR there is some issue with variables there, but I use installed: true to install a release and installed: false to remove this release with helmfile sync
2022-03-15
2022-03-21
Hello! In my helmfile.yaml I have this:
values:
- .env.yaml
in order to source all top level {{ .Values }}. Can I somehow make this conditional and check first if the values are defined from –values (or environment variables) and then fall back to this?
2022-03-23
Hello. I have a question about the tpl function. Is it possible to have locally defined variables be used within a templated textfile?
# alerting.yaml.gotmpl
{{- $deadMansSwitchEndpoint := printf "myString" }}
receivers:
{{ tpl ( readFile "../prom-rules/alertmanager/alertmanager-receivers.yaml") . }}
Where
# ../prom-rules/alertmanager/alertmanager-receivers.yaml
- name: deadmanswitch
webhook_configs:
- url: {{ $deadMansSwitchEndpoint }}
send_resolved: false
helmfile --file alerting.yaml template
failed to render values files "alerting.yaml.gotmpl": failed to render [alerting.yaml.gotmpl], because of template: stringTemplate:70:3: executing "stringTemplate" at <tpl (readFile "../prom-rules/alertmanager/alertmanager-receivers.yaml") .>: error calling tpl: template: stringTemplate:4: undefined variable "$deadMansSwitchEndpoint"
The only example I see in the docs does not use the $variable syntax. And even then this example is for base helm, and not helmfile.
https://helm.sh/docs/howto/charts_tips_and_tricks/
I don’t think you can use a variable defined outside the file like that, but I’m using tpl to render a template that uses variables set inside the template file.
Huh, you’re right. Defining the variable inside of the templated file works.
That’s pretty surprising to me, but I’ll take it.
2022-03-30
This project is so big now - wouldn’t be surpised if GitHub uses it even