Changes for page Rancher 2

Last modified by Diana Strebkova on 2025/12/12 14:23

From 4.3 to 4.4 From 12.1 to 12.2

From version 4.4

edited by Diana Strebkova
on 2025/12/08 15:23

Change comment: There is no comment for this version

To version 12.1

edited by Diana Strebkova
on 2025/12/12 12:23

Change comment: There is no comment for this version

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@@ -159,7 +159,7 @@
  == Add public helm chart ==
  {{warning width="70" title="Chartmuseum Deprecation"}}
--Chartmuseum is deprecated in new Harbor versions, we are migrating all helm charts to oci-compatible repositories in Harbor! New approach to add chart repositories in rancher.
++Chartmuseum is deprecated in new Harbor versions, we are migrating all helm charts to oci-compatible repositories in Harbor with "PKEY-helm" naming convention. For internal harbor repos, use new approach to add OCI chart repositories in rancher.
  {{/warning}}
  In this section, we describe (% style="color:#172b4d" %)how to add public helm charts like the one of DevOps-as-a-Service to a cluster to allow manual deployments.
@@ -178,9 +178,6 @@
  [[image:attach:Screenshot 2023-04-25 at 13.30.33.png||data-xwiki-image-style-border="true" queryparams="effects=drop-shadow" height="127" width="1100"]]
  (% id="H" class="p1" %)
--====   ====
--
--(% id="HTarget:http28s29URL" class="p1" %)
  ==== Target: http(s) URL ====
  {{warning}}
@@ -221,11 +221,9 @@
  [[image:Screenshot 2024-07-03 at 15.13.55.png||data-xwiki-image-style-border="true" height="149" width="785"]]
--====   ====
--
  ==== Target: OCI Repository ====
--To add public oci-repository, navigate to repository create button and click it.
++To add public oci-repository, navigate to repository create button and click it. For target, use OCI Repository like shown below:
  [[image:1765207154466-828.png||height="298" width="821"]]
@@ -240,7 +240,7 @@
  |=(((
  Name
  )))|(((
--devops-as-a-service-helm
++devopsaas-jenkins-auto-agent
  )))
  |=(((
  Description
@@ -250,13 +250,17 @@
  |=(((
  Index URL
  )))|(((
--oci:[[~~/~~/registry.sdc.t-systems.net/chartrepo/devopsaas-helm/>>url:https://registry.sdc.t-systems.net/chartrepo/devopsaas/||shape="rect"]]chartname, for example:
++oci:~/~/registry.sdc.t-systems.net/devopsaas-helm/**<chartname>**, for example:
--oci:[[~~/~~/registry.sdc.t-systems.net/>>url:https://registry.sdc.t-systems.net/chartrepo/devopsaas/||shape="rect"]][[devopsaas-helm/jenkins-lib>>url:https://registry-manoni.devops.t-systems.net/harbor/projects/139/repositories/jenkins-lib]]
++oci:~/~/registry.sdc.t-systems.net/devopsaas-helm/jenkins-lib
++
++{{info}}
++Take into account, that all internal harbor repositories with helm charts have PKEY-helm naming convention, adding repo with both docker images and helm charts may not be supported in rancher.
++{{/info}}
  )))
  {{info}}
--Now all helm charts are stored in harbor folders with -helm suffix. Adding the whole project doesn't work natively anymore, so each separate chart should be added as a separate repo.
++Now all internal helm charts are stored in harbor folders with -helm suffix. Adding the whole public project doesn't work natively anymore, so each separate chart should be added as a separate repo. //**If you have a need in adding the whole project with many repositories, please contact support for finding a possible solution.**//
  {{/info}}
  === Deploy Helm charts ===
@@ -269,7 +269,6 @@
  == Add private chart repository ==
--
  === Create a robot account in Harbor ===
  To add project specific helm charts to Rancher, a Harbor robot account is needed, that is able to read helm charts and pull repositories. If you don't have such an account yet, please follow the instructions given in the [[Create Robot Account section of the Harbor documentation>>doc:Harbor.Harbor 2\.7 Robot Accounts.WebHome||anchor="create_robot_account"]] and make sure to grant at least the following permissions:
@@ -282,14 +282,25 @@
  (% class="p1" %)
  In Rancher UI, switch to the intended cluster and go to Apps/Repositories using the left side menu.
++
++
  [[image:attach:Screenshot 2023-04-25 at 13.11.48.png||data-xwiki-image-style-border="true" queryparams="effects=drop-shadow" height="400" width="209"]]
  (% class="p1" %)
  Create a new Repository by pressing the Create button.
++(% id="HTarget:http28s29URL-1" class="p1" %)
++==== [[image:attach:Screenshot 2023-04-25 at 13.30.33.png||data-xwiki-image-style-border="true" queryparams="effects=drop-shadow" height="127" width="1100"]] ====
++
++(% id="HTarget:http28s29URL-1" class="p1" %)
++==== Target: http(s) URL ====
++
++{{warning title="Chartmuseum Deprecation"}}
++Chartmuseum in Harbor is deprecated, meaning we won't be able to add internal harbor repositories to Rancher that way anymore. Instead use Target: OCI repository.
++{{/warning}}
++
  (% class="p1" %)
--[[image:attach:Screenshot 2023-04-25 at 13.30.33.png||data-xwiki-image-style-border="true" queryparams="effects=drop-shadow" height="127" width="1100"]]
--\\A name for the Repository has to be set. In the screenshot, the project name CITEST is used, which corresponds to our example from above.
++A name for the Repository has to be set. In the screenshot, the project name CITEST is used, which corresponds to our example from above.
  Choose http(s) URL to an index generated by Helm and provide the Index URL ##https:~/~/registry-<domain>.devops.t-systems.net/chartrepo/<project>/##
  (% class="p1" %)
@@ -302,7 +302,132 @@
  (% class="p1" %)
  Click Create.
++(% id="HTarget:OCIRepository-1" class="p1" %)
++==== Target: OCI Repository ====
++{{info}}
++Now all internal helm charts are stored in harbor folders with -helm suffix. Adding the whole public project doesn't work natively anymore, so each separate chart should be added as a separate repo.//** If you have a real need to add the whole project, please contact support for finding a possible solution.**//
++{{/info}}
++
++(% class="p1" %)
++Choose OCI repository in Target and for url, use  ##oci:~/~/registry-<domain>.devops.t-systems.net/<project>-helm/<chartname>##
++
++(% class="box" %)
++(((
++Replace ##<domain>## , ##<project>##  and ##<chartname> ##as necessary to match your set-up. Your charts should be stored in ##<project>-helm ##repository in Harbor, which is created by default when project is created in portal.
++)))
++
++(% class="p1" %)
++For Authentication, select "Create a HTTP Basic Auth Secret" and provide the Username and Password of the Harbor robot account from the previous section.
++
++(% class="wikigeneratedid" %)
++[[image:1765208347952-345.36.18.png||height="449" width="849"]]
++
++(% class="wikigeneratedid" %)
++Click Create.
++
++(% class="wrapped" %)
++|=(((
++Field
++)))|=(((
++Value
++)))
++|=(((
++Name
++)))|(((
++sdcloud-sdportal
++)))
++|=(((
++Description
++)))|(((
++Sdportal charts of sdcloud project
++)))
++|=(((
++Index URL
++)))|(((
++oci:~/~/registry.sdc.t-systems.net/sdcloud-helm/sdportal
++
++{{info}}
++Now we should target a chart repo directly, not the whole project. In you need to reference the whole project with a lot of repos, please contact support to find a possible solution.
++{{/info}}
++)))
++
++=== Migrating chart repositories in rancher to new OCI Repository format ===
++
++(% class="box warningmessage" %)
++(((
++ChartMuseum is being deprecated. After the migration is complete, **all harbor charts will be removed from ChartMuseum**, and **old HTTP(S)-based chart repositories will no longer work in Rancher (for internal harbor charts)**.
++)))
++
++To ensure a smooth transition, we recommend to **add an OCI-based repository alongside the existing ChartMuseum repository** during the migration phase.
++
++(% class="box" %)
++(((
++**We will make your charts available in the corresponding new `<pkey>-helm` OCI projects.**
++)))
++
++| Term | Meaning
++| **Old Repository** | The existing HTTP/HTTPS Harbor ChartMuseum repository.
++| **New Repository** | The new OCI-based Helm chart repository created for your project (e.g. `<chart-repo-name>` in `<pkey>-helm`).
++
++##__**Why This Migration Is Required:**__##
++
++* ##ChartMuseum is deprecated and will be removed.##
++* ##Applications deployed from old repos keep a reference to that repo inside their labels.##
++* ##Without updating the application to point to the new OCI repo, **Rancher will not detect new chart versions from new repository**.##
++
++## Migration Steps:##
++
++1. ##Create the New OCI Repository in Rancher##
++11. Go to **Apps → Repositories**.
++11. Add a new repository of type **OCI**.
++11. Name it similarly to your old repo name (e.g. `<chart-repo-name>-oci`). You can't name it the same.
++11. Point it to the new OCI endpoint.
++1. ##Disable the Old ChartMuseum Repository Temporarily##. ##This step ensures that Rancher resolves charts from the new OCI repo.##
++11. Go to **Apps → Repositories**.
++11. Disable the old HTTP(S)-based repository.
++11. Keep it disabled until the migration is done.
++1. ##Update Existing Applications to Use the New OCI Repo##
++##Applications deployed with the old repository still contain the old repo name in their metadata. You must upgrade them once to transition.##
++11. Go to **Apps → Installed Apps**.
++11. Open the application that was deployed using the old repo.
++11. Click **Upgrade**.
++11. In the list of available chart repositories (scroll to the bottom), select the **new OCI repository**.
++11. Choose the chart version you want to deploy (same or newer).
++11. Click **Upgrade**.
++1.  ##Re-enable the Old Repository (Optional) If you still need the old repo for other apps, re-enable it after the migration steps above.##
++
++ Note: Even if a newer chart version exists in the old repository, your migrated app **will not see it**, because it is no longer connected to that repo.
++
++-----
++
++## Reverting the Migration (If Needed)
++If you want to move an app back to the old repository:##
++
++1. Temporarily disable the new OCI repo.
++2. Enable the old ChartMuseum repo.
++3. Open the application → **Upgrade**.
++4. Select the chart from the old repo.
++5. Save.
++
++This will reconnect the app to the old repository.
++
++-----
++
++## Summary
++- Add new OCI repo → disable old repo → upgrade apps → reconnect to OCI repo.
++- After upgrade, apps no longer track versions from the old repository.
++- Old repository will stop functioning after ChartMuseum shutdown, so migration is required.##
++
++-----
++
++If you want, I can also generate:
++- a shorter version (1-pager),
++- a diagram,
++- a Rancher UI screenshot guide,
++- or a version tailored for your team’s internal wiki.
++
++
  = Automated deployments with Jenkins =
  In this section, we describe(% style="color:#172b4d" %) how to set-up **automated builds, tests and deployments** for Jenkins.

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