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[prometheus-blackbox-exporter] - Add extraConfigmapMounts to config-reloder helper template #4773

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Hello @desaintmartin @gianrubio @rsotnychenko @monotek
My first contribution and thanks.

What this PR does / why we need it

Adds extraConfigmapMounts to config-reloader. This will align with the blackbox exporter where extraConfigmapMounts can be supplied.

In blackbox, a user can use a custom Configmap for blackbox configurations via extraConfigmapMount option to support use cases where configMap for blackbox modules are dynamically generated by external application and would be supplied as a custom configMap managed outside the helmchart.

While we could convert all our non-sensitive configuration to a secret, however this is an anti-pattern in cases where additional process are required to validate secrets.

The blackbox-exporter supports extraConfigmapMounts, but the config-reloader has the following problem:

The reloader will watch this path - - --config-file={{ .Values.configPath | default "/config/blackbox.yaml" }}

In blackbox, a user can use a custom configmap for modules.

The config reloader cannot watch this mount.

Checklist

  • DCO signed
  • Chart Version bumped
  • Title of the PR starts with chart name (e.g. [prometheus-couchdb-exporter])

Add support for custom ConfigMap entries.
Signed-off-by: Nirmal Ramakrishnan
<[email protected]>

Signed-off-by: Nirmal kumar Ramakrishnan <[email protected]>
Set condition to create configMap using values.config (in line modules) or secret if existing configMap is set to empty.

Signed-off-by: Nirmal Ramakrishnan
<[email protected]>

Signed-off-by: Nirmal kumar Ramakrishnan <[email protected]>
Update chart version

Signed-off-by: Nirmal Ramakrishnan
<[email protected]>

Signed-off-by: Nirmal kumar Ramakrishnan <[email protected]>
Update chart version

Signed-off-by: Nirmal Ramakrishnan
<[email protected]>

Signed-off-by: Nirmal kumar Ramakrishnan <[email protected]>
New feature updating minor version. Addressing reviewers comments.

Signed-off-by: Nirmal Ramakrishnan
<[email protected]>

Signed-off-by: Nirmal kumar Ramakrishnan <[email protected]>
Fixing syntax error in the template. 

Signed-off-by: Nirmal Ramakrishnan
<[email protected]>

Signed-off-by: Nirmal kumar Ramakrishnan <[email protected]>
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nirmalkumar85 and others added 2 commits September 26, 2024 09:04
Add support for custom ConfigMap entries.
Signed-off-by: Nirmal Ramakrishnan
<[email protected]>
Signed-off-by: Nirmal kumar Ramakrishnan <[email protected]>

Co-authored-by: André Bauer <[email protected]>
Signed-off-by: Nirmal kumar Ramakrishnan <[email protected]>
@nirmalkumar85
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Apologies @monotek. I was away for extended time due to personal reasons and not able to work on this.

Add support for custom ConfigMap entries.
Signed-off-by: Nirmal Ramakrishnan
<[email protected]>

Signed-off-by: Nirmal kumar Ramakrishnan <[email protected]>
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please fix lint

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2 participants